Implement CCTK_Error and friends

git-svn-id: http://svn.cactuscode.org/flesh/trunk@4962 17b73243-c579-4c4c-a9d2-2d5706c11dac

5 files changed, 819 insertions, 411 deletions

diff --git a/lib/make/aclocal.m4 b/lib/make/aclocal.m4
index e8a88bc5..d6e07503 100644
--- a/lib/make/aclocal.m4
+++ b/lib/make/aclocal.m4
@@ -1011,6 +1011,56 @@ fi
 
 
 
+AC_DEFUN(CCTK_C_ATTRIBUTE_FORMAT,
+[AC_CACHE_CHECK([for C __attribute__((__format__(printf(1, 2))))], cctk_cv_have_c_attribute_format,
+[cctk_cv_have_c_attribute_format=no
+AC_TRY_COMPILE(void xyzzy(const char*, ...) __attribute__((__format__(printf(1, 2))));, xyzzy("%d",42);, cctk_cv_have_c_attribute_format=yes, cctk_cv_have_c_attribute_format=no)
+])
+if test "$cctk_cv_have_c_attribute_format" = "yes" ; then
+   AC_DEFINE(HAVE_CCTK_C_ATTRIBUTE_FORMAT)
+fi
+])
+
+AC_DEFUN(CCTK_CXX_ATTRIBUTE_FORMAT,
+[AC_CACHE_CHECK([for CXX __attribute__((__format__))], cctk_cv_have_cxx_attribute_format,
+[cctk_cv_have_cxx_attribute_format=no
+AC_LANG_SAVE
+AC_LANG_CPLUSPLUS
+AC_TRY_COMPILE(void xyzzy(const char*, ...) __attribute__((__format__(printf(1, 2))));, xyzzy("%d",42);, cctk_cv_have_cxx_attribute_format=yes, cctk_cv_have_cxx_attribute_format=no)
+AC_LANG_RESTORE
+])
+if test "$cctk_cv_have_cxx_attribute_format" = "yes" ; then
+   AC_DEFINE(HAVE_CCTK_CXX_ATTRIBUTE_FORMAT)
+fi
+])
+
+
+
+AC_DEFUN(CCTK_C_ATTRIBUTE_NORETURN,
+[AC_CACHE_CHECK([for C __attribute__((__noreturn__))], cctk_cv_have_c_attribute_noreturn,
+[cctk_cv_have_c_attribute_noreturn=no
+AC_TRY_COMPILE(void xyzzy(void) __attribute__((__noreturn__));, xyzzy(), cctk_cv_have_c_attribute_noreturn=yes, cctk_cv_have_c_attribute_noreturn=no)
+])
+if test "$cctk_cv_have_c_attribute_noreturn" = "yes" ; then
+   AC_DEFINE(HAVE_CCTK_C_ATTRIBUTE_NORETURN)
+fi
+])
+
+AC_DEFUN(CCTK_CXX_ATTRIBUTE_NORETURN,
+[AC_CACHE_CHECK([for CXX __attribute__((__noreturn__))], cctk_cv_have_cxx_attribute_noreturn,
+[cctk_cv_have_cxx_attribute_noreturn=no
+AC_LANG_SAVE
+AC_LANG_CPLUSPLUS
+AC_TRY_COMPILE(void xyzzy(void) __attribute__((__noreturn__));, xyzzy(), cctk_cv_have_cxx_attribute_noreturn=yes, cctk_cv_have_cxx_attribute_noreturn=no)
+AC_LANG_RESTORE
+])
+if test "$cctk_cv_have_cxx_attribute_noreturn" = "yes" ; then
+   AC_DEFINE(HAVE_CCTK_CXX_ATTRIBUTE_NORETURN)
+fi
+])
+
+
+
 AC_DEFUN(CCTK_C_BUILTIN_EXPECT,
 [AC_CACHE_CHECK([for C __builtin_expect], cctk_cv_have_c_builtin_expect,
 [cctk_cv_have_c_builtin_expect=no
@@ -1036,6 +1086,31 @@ fi
 
 
 
+AC_DEFUN(CCTK_C_BUILTIN_UNREACHABLE,
+[AC_CACHE_CHECK([for C __builtin_unreachable], cctk_cv_have_c_builtin_unreachable,
+[cctk_cv_have_c_builtin_unreachable=no
+AC_TRY_COMPILE(, __builtin_unreachable();, cctk_cv_have_c_builtin_unreachable=yes, cctk_cv_have_c_builtin_unreachable=no)
+])
+if test "$cctk_cv_have_c_builtin_unreachable" = "yes" ; then
+   AC_DEFINE(HAVE_CCTK_C_BUILTIN_UNREACHABLE)
+fi
+])
+
+AC_DEFUN(CCTK_CXX_BUILTIN_UNREACHABLE,
+[AC_CACHE_CHECK([for CXX __builtin_unreachable], cctk_cv_have_cxx_builtin_unreachable,
+[cctk_cv_have_cxx_builtin_unreachable=no
+AC_LANG_SAVE
+AC_LANG_CPLUSPLUS
+AC_TRY_LINK(, __builtin_unreachable();, cctk_cv_have_cxx_builtin_unreachable=yes, cctk_cv_have_cxx_builtin_unreachable=no)
+AC_LANG_RESTORE
+])
+if test "$cctk_cv_have_cxx_builtin_unreachable" = "yes" ; then
+   AC_DEFINE(HAVE_CCTK_CXX_BUILTIN_UNREACHABLE)
+fi
+])
+
+
+
 dnl Check for a function that may be provided by cmath or math.h
 AC_DEFUN(CCTK_CHECK_CXX_STDMATHFUNC,
 [cctk_func=`echo $1 | sed 'y%./+-%__p_%'`
diff --git a/lib/make/cctk_Config.h.in b/lib/make/cctk_Config.h.in
index 44af266c..99c7eff4 100644
--- a/lib/make/cctk_Config.h.in
+++ b/lib/make/cctk_Config.h.in
@@ -341,6 +341,22 @@ typedef enum {false, true} bool;
 #  define CCTK_ATTRIBUTE_HOT
 #endif
 
+/* Whether __attribute__((format(...))) exists. */
+#undef HAVE_CCTK_CXX_ATTRIBUTE_FORMAT
+#ifdef HAVE_CCTK_CXX_ATTRIBUTE_FORMAT
+#  define CCTK_ATTRIBUTE_FORMAT(archetype, format, firstarg) __attribute__((__format__(archetype, format, firstarg)))
+#else
+#  define CCTK_ATTRIBUTE_FORMAT(archetype, format, firstarg)
+#endif
+
+/* Whether __attribute__((noreturn)) exists. */
+#undef HAVE_CCTK_CXX_ATTRIBUTE_NORETURN
+#ifdef HAVE_CCTK_CXX_ATTRIBUTE_NORETURN
+#  define CCTK_ATTRIBUTE_NORETURN __attribute__((__noreturn__))
+#else
+#  define CCTK_ATTRIBUTE_NORETURN
+#endif
+
 /* Whether __builtin_expect exists. */
 #undef HAVE_CCTK_C_BUILTIN_EXPECT
 #ifdef HAVE_CCTK_C_BUILTIN_EXPECT
@@ -349,6 +365,14 @@ typedef enum {false, true} bool;
 #  define CCTK_BUILTIN_EXPECT(x,y) (x)
 #endif
 
+/* Whether __builtin_unreachable exists. */
+#undef HAVE_CCTK_C_BUILTIN_UNREACHABLE
+#ifdef HAVE_CCTK_C_BUILTIN_UNREACHABLE
+#  define CCTK_BUILTIN_UNREACHABLE() __builtin_unreachable()
+#else
+#  define CCTK_BUILTIN_UNREACHABLE() ((void)0)
+#endif
+
 /* OpenMP collapse clause */
 #if (defined CCTK_DISABLE_OMP_COLLAPSE ||                               \
      (defined __IBMC__ && defined _ARCH_450D) ||                        \
@@ -526,6 +550,22 @@ typedef enum {false, true} bool;
 #  define CCTK_ATTRIBUTE_HOT
 #endif
 
+/* Whether __attribute__((format(...))) exists. */
+#undef HAVE_CCTK_CXX_ATTRIBUTE_FORMAT
+#ifdef HAVE_CCTK_CXX_ATTRIBUTE_FORMAT
+#  define CCTK_ATTRIBUTE_FORMAT(archetype, format, firstarg) __attribute__((__format__(archetype, format, firstarg)))
+#else
+#  define CCTK_ATTRIBUTE_FORMAT(archetype, format, firstarg)
+#endif
+
+/* Whether __attribute__((noreturn)) exists. */
+#undef HAVE_CCTK_CXX_ATTRIBUTE_NORETURN
+#ifdef HAVE_CCTK_CXX_ATTRIBUTE_NORETURN
+#  define CCTK_ATTRIBUTE_NORETURN __attribute__((__noreturn__))
+#else
+#  define CCTK_ATTRIBUTE_NORETURN
+#endif
+
 /* Whether __builtin_expect exists. */
 #undef HAVE_CCTK_CXX_BUILTIN_EXPECT
 #ifdef HAVE_CCTK_CXX_BUILTIN_EXPECT
@@ -534,6 +574,14 @@ typedef enum {false, true} bool;
 #  define CCTK_BUILTIN_EXPECT(x,y) (x)
 #endif
 
+/* Whether __builtin_unreachable exists. */
+#undef HAVE_CCTK_CXX_BUILTIN_UNREACHABLE
+#ifdef HAVE_CCTK_CXX_BUILTIN_UNREACHABLE
+#  define CCTK_BUILTIN_UNREACHABLE() __builtin_unreachable()
+#else
+#  define CCTK_BUILTIN_UNREACHABLE() ((void)0)
+#endif
+
 /* Some C++ compilers recognise the restrict keyword */
 #undef HAVE_CCTK_CXX_RESTRICT
 #undef CCTK_CXX_RESTRICT
diff --git a/lib/make/configure b/lib/make/configure
index 7c1afb36..86591265 100755
--- a/lib/make/configure
+++ b/lib/make/configure
@@ -162,6 +162,24 @@
 
 
 
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 # Guess values for system-dependent variables and create Makefiles.
 # Generated automatically using autoconf version 2.13 
 # Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
@@ -834,7 +852,7 @@ else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:838: checking host system type" >&5
+echo "configure:856: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
@@ -880,7 +898,7 @@ if test -n "$LIBS" ; then
 fi
 
 echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6
-echo "configure:884: checking whether ${MAKE-make} sets \${MAKE}" >&5
+echo "configure:902: checking whether ${MAKE-make} sets \${MAKE}" >&5
 set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -913,7 +931,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:917: checking for $ac_word" >&5
+echo "configure:935: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -945,7 +963,7 @@ done
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:949: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:967: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -957,12 +975,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 rm -fr conftest*
 cat > conftest.$ac_ext << EOF
 
-#line 961 "configure"
+#line 979 "configure"
 #include "confdefs.h"
 
 main(){return(0);} int PilotMain(){return(0);}
 EOF
-if { (eval echo configure:966: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:984: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>&5; then
@@ -991,7 +1009,7 @@ fi
 CROSS_COMPILE=`echo $CROSS_COMPILE | tr '[:upper:]' '[:lower:]'`
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:995: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1013: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 if test $ac_cv_prog_cc_cross = yes -a "x$CROSS_COMPILE" != xyes; then
   { echo "configure: error: Could not run executable generated by C compiler (see configs/<configname>/config-data/config.log for details). If this is a cross configuration please set CROSS_COMPILE=yes." 1>&2; exit 1; }
@@ -999,7 +1017,7 @@ fi
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:1003: checking whether we are using GNU C" >&5
+echo "configure:1021: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1008,7 +1026,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1012: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1030: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -1024,7 +1042,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1028: checking for $ac_word" >&5
+echo "configure:1046: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CXX'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1056,7 +1074,7 @@ done
   fi
 
   echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1060: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
+echo "configure:1078: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1068,12 +1086,12 @@ cross_compiling=$ac_cv_prog_cxx_cross
 rm -fr conftest*
 cat > conftest.$ac_ext << EOF
 
-#line 1072 "configure"
+#line 1090 "configure"
 #include "confdefs.h"
 
 int main(){return(0);} extern "C" int PilotMain(){return(0);}
 EOF
-if { (eval echo configure:1077: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1095: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cxx_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>&5; then
@@ -1099,7 +1117,7 @@ if test $ac_cv_prog_cxx_works = no; then
   { echo "configure: error: installation or configuration problem: C++ compiler cannot create executables (see configs/<configname>/config-data/config.log for details)." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1103: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1121: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cxx_cross" 1>&6
 if test $ac_cv_prog_cxx_cross = yes -a "x$CROSS_COMPILE" != xyes; then
   { echo "configure: error: Could not run executable generated by C++ compiler (see configs/<configname>/config-data/config.log for details). If this is a cross configuration please set CROSS_COMPILE=yes." 1>&2; exit 1; }
@@ -1107,7 +1125,7 @@ fi
 cross_compiling=$ac_cv_prog_cxx_cross
 
   echo $ac_n "checking whether we are using GNU C++""... $ac_c" 1>&6
-echo "configure:1111: checking whether we are using GNU C++" >&5
+echo "configure:1129: checking whether we are using GNU C++" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gxx'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1116,7 +1134,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1120: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1138: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gxx=yes
 else
   ac_cv_prog_gxx=no
@@ -1132,7 +1150,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1136: checking for $ac_word" >&5
+echo "configure:1154: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CUCC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1167,7 +1185,7 @@ if test -z "$RANLIB" ; then
   # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1171: checking for $ac_word" >&5
+echo "configure:1189: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1203,7 +1221,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1207: checking for $ac_word" >&5
+echo "configure:1225: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_CPP'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1249,7 +1267,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1253: checking for $ac_word" >&5
+echo "configure:1271: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_FPP'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1293,7 +1311,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1297: checking for $ac_word" >&5
+echo "configure:1315: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_PERL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1330,7 +1348,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1334: checking for $ac_word" >&5
+echo "configure:1352: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_TAR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1367,7 +1385,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1371: checking for $ac_word" >&5
+echo "configure:1389: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_GZIP_CMD'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1404,7 +1422,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1408: checking for $ac_word" >&5
+echo "configure:1426: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_PATCH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1441,7 +1459,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1445: checking for $ac_word" >&5
+echo "configure:1463: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_GIT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1478,7 +1496,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1482: checking for $ac_word" >&5
+echo "configure:1500: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_F90'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1515,7 +1533,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1519: checking for $ac_word" >&5
+echo "configure:1537: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_F77'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1552,7 +1570,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1556: checking for $ac_word" >&5
+echo "configure:1574: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1589,7 +1607,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1593: checking for $ac_word" >&5
+echo "configure:1611: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_MKDIR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1628,7 +1646,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1632: checking for $ac_word" >&5
+echo "configure:1650: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_SHELL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1925,7 +1943,7 @@ unset LDFLAGS
 
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1929: checking how to run the C preprocessor" >&5
+echo "configure:1947: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -1940,13 +1958,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1944 "configure"
+#line 1962 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1950: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1968: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1957,13 +1975,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1961 "configure"
+#line 1979 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1967: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1985: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1974,13 +1992,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 1978 "configure"
+#line 1996 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1984: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2002: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -2005,12 +2023,12 @@ fi
 echo "$ac_t""$CPP" 1>&6
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:2009: checking for ANSI C header files" >&5
+echo "configure:2027: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2014 "configure"
+#line 2032 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -2018,7 +2036,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2022: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2040: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2035,7 +2053,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 2039 "configure"
+#line 2057 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -2053,7 +2071,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 2057 "configure"
+#line 2075 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -2074,7 +2092,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 2078 "configure"
+#line 2096 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -2085,7 +2103,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:2089: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2107: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -2111,13 +2129,13 @@ fi
 
 
 echo $ac_n "checking for C99 features""... $ac_c" 1>&6
-echo "configure:2115: checking for C99 features" >&5
+echo "configure:2133: checking for C99 features" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c99'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c99=no
 cat > conftest.$ac_ext <<EOF
-#line 2121 "configure"
+#line 2139 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -2128,7 +2146,7 @@ int x;
 
 ; return 0; }
 EOF
-if { (eval echo configure:2132: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2150: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c99=yes
 else
@@ -2157,14 +2175,14 @@ fi
 
 if test "x$cross_compiling" = 'xno' ; then
   echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
-echo "configure:2161: checking whether byte ordering is bigendian" >&5
+echo "configure:2179: checking whether byte ordering is bigendian" >&5
 if eval "test \"`echo '$''{'ac_cv_c_bigendian'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_bigendian=unknown
 # See if sys/param.h defines the BYTE_ORDER macro.
 cat > conftest.$ac_ext <<EOF
-#line 2168 "configure"
+#line 2186 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -2175,11 +2193,11 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:2179: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2197: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   # It does; now see whether it defined to BIG_ENDIAN or not.
 cat > conftest.$ac_ext <<EOF
-#line 2183 "configure"
+#line 2201 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -2190,7 +2208,7 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:2194: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2212: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_bigendian=yes
 else
@@ -2210,7 +2228,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 2214 "configure"
+#line 2232 "configure"
 #include "confdefs.h"
 main () {
   /* Are we little or big endian?  From Harbison&Steele.  */
@@ -2223,7 +2241,7 @@ main () {
   exit (u.c[sizeof (long) - 1] == 1);
 }
 EOF
-if { (eval echo configure:2227: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2245: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_bigendian=no
 else
@@ -2266,7 +2284,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_LONG_LONG" ; then
 fi
 
 echo $ac_n "checking size of long long""... $ac_c" 1>&6
-echo "configure:2270: checking size of long long" >&5
+echo "configure:2288: checking size of long long" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2274,10 +2292,9 @@ else
   ac_cv_sizeof_long_long=$SIZEOF_LONG_LONG
 else
   cat > conftest.$ac_ext <<EOF
-#line 2278 "configure"
+#line 2296 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-#include <sys/types.h>
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -2286,7 +2303,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:2290: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2307: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_long_long=`cat conftestval`
 else
@@ -2311,7 +2328,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_LONG_INT" ; then
 fi
 
 echo $ac_n "checking size of long int""... $ac_c" 1>&6
-echo "configure:2315: checking size of long int" >&5
+echo "configure:2332: checking size of long int" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long_int'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2319,10 +2336,9 @@ else
   ac_cv_sizeof_long_int=$SIZEOF_LONG_INT
 else
   cat > conftest.$ac_ext <<EOF
-#line 2323 "configure"
+#line 2340 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-#include <sys/types.h>
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -2331,7 +2347,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:2335: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2351: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_long_int=`cat conftestval`
 else
@@ -2356,7 +2372,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_INT" ; then
 fi
 
 echo $ac_n "checking size of int""... $ac_c" 1>&6
-echo "configure:2360: checking size of int" >&5
+echo "configure:2376: checking size of int" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_int'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2364,10 +2380,9 @@ else
   ac_cv_sizeof_int=$SIZEOF_INT
 else
   cat > conftest.$ac_ext <<EOF
-#line 2368 "configure"
+#line 2384 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-#include <sys/types.h>
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -2376,7 +2391,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:2380: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2395: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_int=`cat conftestval`
 else
@@ -2401,7 +2416,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_SHORT_INT" ; then
 fi
 
 echo $ac_n "checking size of short int""... $ac_c" 1>&6
-echo "configure:2405: checking size of short int" >&5
+echo "configure:2420: checking size of short int" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_short_int'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2409,10 +2424,9 @@ else
   ac_cv_sizeof_short_int=$SIZEOF_SHORT_INT
 else
   cat > conftest.$ac_ext <<EOF
-#line 2413 "configure"
+#line 2428 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-#include <sys/types.h>
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -2421,7 +2435,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:2425: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2439: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_short_int=`cat conftestval`
 else
@@ -2448,7 +2462,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_LONG_DOUBLE" ; then
 fi
 
 echo $ac_n "checking size of long double""... $ac_c" 1>&6
-echo "configure:2452: checking size of long double" >&5
+echo "configure:2466: checking size of long double" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2456,10 +2470,9 @@ else
   ac_cv_sizeof_long_double=$SIZEOF_LONG_DOUBLE
 else
   cat > conftest.$ac_ext <<EOF
-#line 2460 "configure"
+#line 2474 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-#include <sys/types.h>
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -2468,7 +2481,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:2472: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2485: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_long_double=`cat conftestval`
 else
@@ -2493,7 +2506,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_DOUBLE" ; then
 fi
 
 echo $ac_n "checking size of double""... $ac_c" 1>&6
-echo "configure:2497: checking size of double" >&5
+echo "configure:2510: checking size of double" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2501,10 +2514,9 @@ else
   ac_cv_sizeof_double=$SIZEOF_DOUBLE
 else
   cat > conftest.$ac_ext <<EOF
-#line 2505 "configure"
+#line 2518 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-#include <sys/types.h>
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -2513,7 +2525,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:2517: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2529: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_double=`cat conftestval`
 else
@@ -2539,7 +2551,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_FLOAT" ; then
 fi
 
 echo $ac_n "checking size of float""... $ac_c" 1>&6
-echo "configure:2543: checking size of float" >&5
+echo "configure:2555: checking size of float" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_float'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2547,10 +2559,9 @@ else
   ac_cv_sizeof_float=$SIZEOF_FLOAT
 else
   cat > conftest.$ac_ext <<EOF
-#line 2551 "configure"
+#line 2563 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-#include <sys/types.h>
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -2559,7 +2570,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:2563: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2574: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_float=`cat conftestval`
 else
@@ -2586,7 +2597,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_POINTER" ; then
 fi
 
 echo $ac_n "checking size of char *""... $ac_c" 1>&6
-echo "configure:2590: checking size of char *" >&5
+echo "configure:2601: checking size of char *" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_char_p'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2594,10 +2605,9 @@ else
   ac_cv_sizeof_char_p=$SIZEOF_POINTER
 else
   cat > conftest.$ac_ext <<EOF
-#line 2598 "configure"
+#line 2609 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-#include <sys/types.h>
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -2606,7 +2616,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:2610: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2620: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_char_p=`cat conftestval`
 else
@@ -2641,7 +2651,7 @@ EOF
 
 else
   echo $ac_n "checking for the null device""... $ac_c" 1>&6
-echo "configure:2645: checking for the null device" >&5
+echo "configure:2655: checking for the null device" >&5
 if eval "test \"`echo '$''{'cctk_cv_nulldevice'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2706,12 +2716,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in gethostbyname
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2710: checking for $ac_func" >&5
+echo "configure:2720: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2715 "configure"
+#line 2725 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2734,7 +2744,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2738: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2748: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2756,7 +2766,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for gethostbyname in library nsl""... $ac_c" 1>&6
-echo "configure:2760: checking for gethostbyname in library nsl" >&5
+echo "configure:2770: checking for gethostbyname in library nsl" >&5
 ac_lib_var=`echo nsl'_'gethostbyname | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2765,7 +2775,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="nsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2769 "configure"
+#line 2779 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2776,7 +2786,7 @@ int main() {
 gethostbyname()
 ; return 0; }
 EOF
-if { (eval echo configure:2780: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2790: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2807,12 +2817,12 @@ done
 
 # Check if we have mode_t available
 echo $ac_n "checking whether mode_t is defined""... $ac_c" 1>&6
-echo "configure:2811: checking whether mode_t is defined" >&5
+echo "configure:2821: checking whether mode_t is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2816 "configure"
+#line 2826 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -2822,7 +2832,7 @@ int main() {
 mode_t foo; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:2826: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2836: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have_mode_t=yes"
 else
@@ -2848,12 +2858,12 @@ fi
 
 
 echo $ac_n "checking for availability of gettimeofday timing""... $ac_c" 1>&6
-echo "configure:2852: checking for availability of gettimeofday timing" >&5
+echo "configure:2862: checking for availability of gettimeofday timing" >&5
 if eval "test \"`echo '$''{'cctk_cv_time_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2857 "configure"
+#line 2867 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -2861,7 +2871,7 @@ gettimeofday(0, 0);
  return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2865: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2875: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "cctk_cv_time_gettimeofday=yes"
 else
@@ -2883,12 +2893,12 @@ else
 fi
 if eval "test \"`echo '$cctk_cv_time_gettimeofday'`\" = yes"; then
 echo $ac_n "checking if gettimeofday needs timezone""... $ac_c" 1>&6
-echo "configure:2887: checking if gettimeofday needs timezone" >&5
+echo "configure:2897: checking if gettimeofday needs timezone" >&5
 if eval "test \"`echo '$''{'cctk_cv_time_gettimeofday_timezone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2892 "configure"
+#line 2902 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <sys/time.h>
@@ -2901,7 +2911,7 @@ struct timeval tp;
  return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2905: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2915: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "cctk_cv_time_gettimeofday_timezone=yes"
 else
@@ -2924,12 +2934,12 @@ fi
 fi
 
 echo $ac_n "checking for availability of getrusage timing""... $ac_c" 1>&6
-echo "configure:2928: checking for availability of getrusage timing" >&5
+echo "configure:2938: checking for availability of getrusage timing" >&5
 if eval "test \"`echo '$''{'cctk_cv_time_getrusage'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2933 "configure"
+#line 2943 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <sys/time.h>
@@ -2942,7 +2952,7 @@ struct rusage ru;
  return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2946: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2956: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "cctk_cv_time_getrusage=yes"
 else
@@ -2964,12 +2974,12 @@ else
 fi
 
 echo $ac_n "checking for availability of _ftime timing""... $ac_c" 1>&6
-echo "configure:2968: checking for availability of _ftime timing" >&5
+echo "configure:2978: checking for availability of _ftime timing" >&5
 if eval "test \"`echo '$''{'cctk_cv_time_ftime'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2973 "configure"
+#line 2983 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <time.h>
@@ -2982,7 +2992,7 @@ int main() {
   return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2986: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2996: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "cctk_cv_time_ftime=yes"
 else
@@ -3009,12 +3019,12 @@ for cctk_hdr in time.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3013: checking for $cctk_hdr" >&5
+echo "configure:3023: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3018 "configure"
+#line 3028 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3022,7 +3032,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3026: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3036: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3049,12 +3059,12 @@ for cctk_hdr in sys/time.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3053: checking for $cctk_hdr" >&5
+echo "configure:3063: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3058 "configure"
+#line 3068 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3062,7 +3072,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3066: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3076: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3089,12 +3099,12 @@ for cctk_hdr in sys/types.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3093: checking for $cctk_hdr" >&5
+echo "configure:3103: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3098 "configure"
+#line 3108 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3102,7 +3112,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3106: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3116: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3129,12 +3139,12 @@ for cctk_hdr in unistd.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3133: checking for $cctk_hdr" >&5
+echo "configure:3143: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3138 "configure"
+#line 3148 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3142,7 +3152,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3146: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3156: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3169,12 +3179,12 @@ for cctk_hdr in string.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3173: checking for $cctk_hdr" >&5
+echo "configure:3183: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3178 "configure"
+#line 3188 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3182,7 +3192,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3186: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3196: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3209,12 +3219,12 @@ for cctk_hdr in assert.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3213: checking for $cctk_hdr" >&5
+echo "configure:3223: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3218 "configure"
+#line 3228 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3222,7 +3232,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3226: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3236: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3249,12 +3259,12 @@ for cctk_hdr in tgmath.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3253: checking for $cctk_hdr" >&5
+echo "configure:3263: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3258 "configure"
+#line 3268 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3262,7 +3272,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3266: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3276: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3289,12 +3299,12 @@ for cctk_hdr in sys/stat.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3293: checking for $cctk_hdr" >&5
+echo "configure:3303: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3298 "configure"
+#line 3308 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3302,7 +3312,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3306: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3316: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3329,12 +3339,12 @@ for cctk_hdr in getopt.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3333: checking for $cctk_hdr" >&5
+echo "configure:3343: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3338 "configure"
+#line 3348 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3342,7 +3352,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3346: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3356: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3369,12 +3379,12 @@ for cctk_hdr in dirent.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3373: checking for $cctk_hdr" >&5
+echo "configure:3383: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3378 "configure"
+#line 3388 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3382,7 +3392,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3386: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3396: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3409,12 +3419,12 @@ for cctk_hdr in c_asm.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3413: checking for $cctk_hdr" >&5
+echo "configure:3423: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3418 "configure"
+#line 3428 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3422,7 +3432,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3426: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3436: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3449,12 +3459,12 @@ for cctk_hdr in intrinsics.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3453: checking for $cctk_hdr" >&5
+echo "configure:3463: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3458 "configure"
+#line 3468 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3462,7 +3472,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3466: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3476: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3489,12 +3499,12 @@ for cctk_hdr in mach/mach_time.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3493: checking for $cctk_hdr" >&5
+echo "configure:3503: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3498 "configure"
+#line 3508 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3502,7 +3512,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3506: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3516: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3526,12 +3536,12 @@ fi
 done
 
 echo $ac_n "checking for regex.h""... $ac_c" 1>&6
-echo "configure:3530: checking for regex.h" >&5
+echo "configure:3540: checking for regex.h" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_regex_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3535 "configure"
+#line 3545 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <regex.h>
@@ -3539,7 +3549,7 @@ int main() {
 return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:3543: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3553: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_regex_h=yes"
 else
@@ -3564,12 +3574,12 @@ for cctk_hdr in sys/filio.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3568: checking for $cctk_hdr" >&5
+echo "configure:3578: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3573 "configure"
+#line 3583 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3579,7 +3589,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3583: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3593: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3606,12 +3616,12 @@ for cctk_hdr in sys/ioctl.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3610: checking for $cctk_hdr" >&5
+echo "configure:3620: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3615 "configure"
+#line 3625 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3621,7 +3631,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3625: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3635: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3648,12 +3658,12 @@ for cctk_hdr in sys/socket.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3652: checking for $cctk_hdr" >&5
+echo "configure:3662: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3657 "configure"
+#line 3667 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3663,7 +3673,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3667: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3677: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3690,12 +3700,12 @@ for cctk_hdr in netinet/in.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3694: checking for $cctk_hdr" >&5
+echo "configure:3704: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3699 "configure"
+#line 3709 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3705,7 +3715,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3709: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3719: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3732,12 +3742,12 @@ for cctk_hdr in netdb.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3736: checking for $cctk_hdr" >&5
+echo "configure:3746: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3741 "configure"
+#line 3751 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3747,7 +3757,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3751: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3761: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3774,12 +3784,12 @@ for cctk_hdr in arpa/inet.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3778: checking for $cctk_hdr" >&5
+echo "configure:3788: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3783 "configure"
+#line 3793 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3789,7 +3799,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3793: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3803: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3816,12 +3826,12 @@ for cctk_hdr in winsock2.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3820: checking for $cctk_hdr" >&5
+echo "configure:3830: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3825 "configure"
+#line 3835 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3829,7 +3839,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3833: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3843: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3856,12 +3866,12 @@ for cctk_hdr in crypt.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3860: checking for $cctk_hdr" >&5
+echo "configure:3870: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3865 "configure"
+#line 3875 "configure"
 #include "confdefs.h"
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
@@ -3871,7 +3881,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3875: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3885: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3898,12 +3908,12 @@ for cctk_hdr in signal.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3902: checking for $cctk_hdr" >&5
+echo "configure:3912: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3907 "configure"
+#line 3917 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3911,7 +3921,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3915: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3925: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3938,12 +3948,12 @@ for cctk_hdr in malloc.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3942: checking for $cctk_hdr" >&5
+echo "configure:3952: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3947 "configure"
+#line 3957 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3951,7 +3961,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3955: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3965: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3978,12 +3988,12 @@ for cctk_hdr in sched.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3982: checking for $cctk_hdr" >&5
+echo "configure:3992: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3987 "configure"
+#line 3997 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3991,7 +4001,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3995: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4005: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -4018,12 +4028,12 @@ for cctk_hdr in execinfo.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:4022: checking for $cctk_hdr" >&5
+echo "configure:4032: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4027 "configure"
+#line 4037 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -4031,7 +4041,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:4035: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4045: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -4056,12 +4066,12 @@ done
 
 
 echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:4060: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:4070: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4065 "configure"
+#line 4075 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -4070,7 +4080,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:4074: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4084: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -4095,12 +4105,12 @@ fi
 
 # Check if we have socklen_t available
 echo $ac_n "checking whether socklen_t is defined""... $ac_c" 1>&6
-echo "configure:4099: checking whether socklen_t is defined" >&5
+echo "configure:4109: checking whether socklen_t is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_socklen_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4104 "configure"
+#line 4114 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -4120,7 +4130,7 @@ int main() {
 socklen_t foo; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:4124: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4134: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have_socklen_t=yes"
 else
@@ -4145,12 +4155,12 @@ fi
 
 # Check if someone has defined SOCKET
 echo $ac_n "checking whether SOCKET is defined""... $ac_c" 1>&6
-echo "configure:4149: checking whether SOCKET is defined" >&5
+echo "configure:4159: checking whether SOCKET is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_SOCKET'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4154 "configure"
+#line 4164 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -4170,7 +4180,7 @@ int main() {
 SOCKET foo; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:4174: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4184: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have_SOCKET=yes"
 else
@@ -4196,12 +4206,12 @@ fi
 # Check for timing functions
 
 echo $ac_n "checking for hrtime_t""... $ac_c" 1>&6
-echo "configure:4200: checking for hrtime_t" >&5
+echo "configure:4210: checking for hrtime_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_hrtime_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4205 "configure"
+#line 4215 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -4232,12 +4242,12 @@ fi
 for ac_func in gethrtime read_real_time time_base_to_time clock_gettime mach_absolute_time
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4236: checking for $ac_func" >&5
+echo "configure:4246: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4241 "configure"
+#line 4251 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4260,7 +4270,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4264: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4274: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4286,10 +4296,10 @@ done
 
 
 echo $ac_n "checking for _rtc intrinsic""... $ac_c" 1>&6
-echo "configure:4290: checking for _rtc intrinsic" >&5
+echo "configure:4300: checking for _rtc intrinsic" >&5
 rtc_ok=yes
 cat > conftest.$ac_ext <<EOF
-#line 4293 "configure"
+#line 4303 "configure"
 #include "confdefs.h"
 #ifdef HAVE_INTRINSICS_H
 #include <intrinsics.h>
@@ -4298,7 +4308,7 @@ int main() {
 _rtc()
 ; return 0; }
 EOF
-if { (eval echo configure:4302: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4312: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define HAVE__RTC 1
@@ -4319,12 +4329,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in mallinfo
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4323: checking for $ac_func" >&5
+echo "configure:4333: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4328 "configure"
+#line 4338 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4347,7 +4357,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4351: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4361: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4376,12 +4386,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in mallopt
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4380: checking for $ac_func" >&5
+echo "configure:4390: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4385 "configure"
+#line 4395 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4404,7 +4414,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4408: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4418: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4432,12 +4442,12 @@ done
 
 # Check if M_MMAP_THRESHOLD is defined
 echo $ac_n "checking whether M_MMAP_THRESHOLD is defined""... $ac_c" 1>&6
-echo "configure:4436: checking whether M_MMAP_THRESHOLD is defined" >&5
+echo "configure:4446: checking whether M_MMAP_THRESHOLD is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_M_MMAP_THRESHOLD'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4441 "configure"
+#line 4451 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #ifdef HAVE_MALLOC_H
@@ -4447,7 +4457,7 @@ int main() {
 int x=M_MMAP_THRESHOLD; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:4451: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4461: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have_M_MMAP_THRESHOLD=yes"
 else
@@ -4474,12 +4484,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in sched_getaffinity
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4478: checking for $ac_func" >&5
+echo "configure:4488: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4483 "configure"
+#line 4493 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4502,7 +4512,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4506: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4516: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4531,12 +4541,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in getpid
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4535: checking for $ac_func" >&5
+echo "configure:4545: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4540 "configure"
+#line 4550 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4559,7 +4569,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4563: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4573: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4588,19 +4598,19 @@ done
 
 # Check if we have __int64
 echo $ac_n "checking if __int64 is defined""... $ac_c" 1>&6
-echo "configure:4592: checking if __int64 is defined" >&5
+echo "configure:4602: checking if __int64 is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have___int64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4597 "configure"
+#line 4607 "configure"
 #include "confdefs.h"
 
 int main() {
 __int64 foo; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:4604: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4614: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have___int64=yes"
 else
@@ -4635,12 +4645,12 @@ cross_compiling=$ac_cv_prog_cxx_cross
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:4639: checking for $cctk_hdr" >&5
+echo "configure:4649: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4644 "configure"
+#line 4654 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -4648,7 +4658,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:4652: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4662: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -4687,12 +4697,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in getopt_long_only
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4691: checking for $ac_func" >&5
+echo "configure:4701: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4696 "configure"
+#line 4706 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4715,7 +4725,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4719: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4729: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4758,20 +4768,20 @@ else
 fi
 
 echo $ac_n "checking for C bool""... $ac_c" 1>&6
-echo "configure:4762: checking for C bool" >&5
+echo "configure:4772: checking for C bool" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c_bool'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c_bool=no
 cat > conftest.$ac_ext <<EOF
-#line 4768 "configure"
+#line 4778 "configure"
 #include "confdefs.h"
 
 int main() {
 bool foo;
 ; return 0; }
 EOF
-if { (eval echo configure:4775: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4785: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c_bool=yes
 else
@@ -4793,7 +4803,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX bool""... $ac_c" 1>&6
-echo "configure:4797: checking for CXX bool" >&5
+echo "configure:4807: checking for CXX bool" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_bool'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4807,14 +4817,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 4811 "configure"
+#line 4821 "configure"
 #include "confdefs.h"
 
 int main() {
 bool foo;
 ; return 0; }
 EOF
-if { (eval echo configure:4818: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4828: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_bool=yes
 else
@@ -4844,12 +4854,12 @@ fi
 
 
 echo $ac_n "checking for working const""... $ac_c" 1>&6
-echo "configure:4848: checking for working const" >&5
+echo "configure:4858: checking for working const" >&5
 if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4853 "configure"
+#line 4863 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4898,7 +4908,7 @@ ccp = (char const *const *) p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:4902: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4912: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_const=yes
 else
@@ -4920,14 +4930,14 @@ fi
 
 #AC_C_INLINE
 echo $ac_n "checking for C inline""... $ac_c" 1>&6
-echo "configure:4924: checking for C inline" >&5
+echo "configure:4934: checking for C inline" >&5
 if eval "test \"`echo '$''{'cctk_cv_c_inline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_c_inline=no
 for ac_kw in inline __inline__ __inline '__inline__ __attribute__((__gnu_inline__))'; do
   cat > conftest.$ac_ext <<EOF
-#line 4931 "configure"
+#line 4941 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4935,14 +4945,14 @@ foo();
 ; return 0; }
 EOF
 cat > conftest2.$ac_ext <<EOF
-#line 4939 "configure"
+#line 4949 "configure"
 #include "confdefs.h"
 
 int main2() {
 ;} $ac_kw foo() {
 ; return 0; }
 EOF
-if { (eval echo configure:4946: \"$ac_link conftest2.$ac_ext\") 1>&5; (eval $ac_link conftest2.$ac_ext) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4956: \"$ac_link conftest2.$ac_ext\") 1>&5; (eval $ac_link conftest2.$ac_ext) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   cctk_cv_c_inline=$ac_kw; break
 else
@@ -4976,14 +4986,14 @@ EOF
 esac
 
 echo $ac_n "checking for C static inline""... $ac_c" 1>&6
-echo "configure:4980: checking for C static inline" >&5
+echo "configure:4990: checking for C static inline" >&5
 if eval "test \"`echo '$''{'cctk_cv_c_static_inline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_c_static_inline=no
 for ac_kw in 'static inline' 'static __inline__' 'static __inline' 'static __inline__ __attribute__((__gnu_inline__))'; do
   cat > conftest.$ac_ext <<EOF
-#line 4987 "configure"
+#line 4997 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4991,14 +5001,14 @@ int main() {
 ; return 0; }
 EOF
 cat > conftest2.$ac_ext <<EOF
-#line 4995 "configure"
+#line 5005 "configure"
 #include "confdefs.h"
 
 int main2() {
 ;} $ac_kw ifoo(){} foo2(){ifoo();
 ; return 0; }
 EOF
-if { (eval echo configure:5002: \"$ac_link conftest2.$ac_ext\") 1>&5; (eval $ac_link conftest2.$ac_ext) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5012: \"$ac_link conftest2.$ac_ext\") 1>&5; (eval $ac_link conftest2.$ac_ext) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   cctk_cv_c_static_inline=$ac_kw; break
 else
@@ -5024,14 +5034,14 @@ esac
 
 
 echo $ac_n "checking for C restrict""... $ac_c" 1>&6
-echo "configure:5028: checking for C restrict" >&5
+echo "configure:5038: checking for C restrict" >&5
 if eval "test \"`echo '$''{'cctk_cv_c_restrict'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_c_restrict=no
 for ac_kw in restrict __restrict__ __restrict; do
   cat > conftest.$ac_ext <<EOF
-#line 5035 "configure"
+#line 5045 "configure"
 #include "confdefs.h"
 
 double * $ac_kw p1;
@@ -5056,7 +5066,7 @@ double * $ac_kw v2[3];
 
 ; return 0; }
 EOF
-if { (eval echo configure:5060: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5070: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_c_restrict=$ac_kw; break
 else
@@ -5086,7 +5096,7 @@ EOF
 esac
 
 echo $ac_n "checking for C++ restrict""... $ac_c" 1>&6
-echo "configure:5090: checking for C++ restrict" >&5
+echo "configure:5100: checking for C++ restrict" >&5
 if eval "test \"`echo '$''{'cctk_cv_cxx_restrict'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5101,7 +5111,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
 for ac_kw in restrict __restrict__ __restrict; do
   cat > conftest.$ac_ext <<EOF
-#line 5105 "configure"
+#line 5115 "configure"
 #include "confdefs.h"
 
 double * $ac_kw p1;
@@ -5126,7 +5136,7 @@ double * $ac_kw v2[3];
 
 ; return 0; }
 EOF
-if { (eval echo configure:5130: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5140: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_cxx_restrict=$ac_kw; break
 else
@@ -5167,7 +5177,7 @@ cctk_func=`echo copysign | sed 'y%./+-%__p_%'`
  cctk_tr_func=`echo $cctk_func |
    sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
 echo $ac_n "checking for C++ copysign""... $ac_c" 1>&6
-echo "configure:5171: checking for C++ copysign" >&5
+echo "configure:5181: checking for C++ copysign" >&5
 if eval "test \"`echo '$''{'cctk_cv_cxx_$cctk_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5187,7 +5197,7 @@ for ac_nargs in 1 2; do
     2) ac_args='(1.0, 1.0)'; ac_argsf='(1.0f, 1.0f)' ;;
   esac
   cat > conftest.$ac_ext <<EOF
-#line 5191 "configure"
+#line 5201 "configure"
 #include "confdefs.h"
 
 /* See note in cctk_Math.h regarding these include statements */
@@ -5208,7 +5218,7 @@ using namespace std;
 
 ; return 0; }
 EOF
-if { (eval echo configure:5212: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5222: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_cxx_func="$ac_func"; break 2
 else
@@ -5246,7 +5256,7 @@ cctk_func=`echo fpclassify | sed 'y%./+-%__p_%'`
  cctk_tr_func=`echo $cctk_func |
    sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
 echo $ac_n "checking for C++ fpclassify""... $ac_c" 1>&6
-echo "configure:5250: checking for C++ fpclassify" >&5
+echo "configure:5260: checking for C++ fpclassify" >&5
 if eval "test \"`echo '$''{'cctk_cv_cxx_$cctk_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5266,7 +5276,7 @@ for ac_nargs in 1 2; do
     2) ac_args='(1.0, 1.0)'; ac_argsf='(1.0f, 1.0f)' ;;
   esac
   cat > conftest.$ac_ext <<EOF
-#line 5270 "configure"
+#line 5280 "configure"
 #include "confdefs.h"
 
 /* See note in cctk_Math.h regarding these include statements */
@@ -5287,7 +5297,7 @@ using namespace std;
 
 ; return 0; }
 EOF
-if { (eval echo configure:5291: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5301: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_cxx_func="$ac_func"; break 2
 else
@@ -5325,7 +5335,7 @@ cctk_func=`echo isfinite | sed 'y%./+-%__p_%'`
  cctk_tr_func=`echo $cctk_func |
    sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
 echo $ac_n "checking for C++ isfinite""... $ac_c" 1>&6
-echo "configure:5329: checking for C++ isfinite" >&5
+echo "configure:5339: checking for C++ isfinite" >&5
 if eval "test \"`echo '$''{'cctk_cv_cxx_$cctk_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5345,7 +5355,7 @@ for ac_nargs in 1 2; do
     2) ac_args='(1.0, 1.0)'; ac_argsf='(1.0f, 1.0f)' ;;
   esac
   cat > conftest.$ac_ext <<EOF
-#line 5349 "configure"
+#line 5359 "configure"
 #include "confdefs.h"
 
 /* See note in cctk_Math.h regarding these include statements */
@@ -5366,7 +5376,7 @@ using namespace std;
 
 ; return 0; }
 EOF
-if { (eval echo configure:5370: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5380: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_cxx_func="$ac_func"; break 2
 else
@@ -5404,7 +5414,7 @@ cctk_func=`echo isinf | sed 'y%./+-%__p_%'`
  cctk_tr_func=`echo $cctk_func |
    sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
 echo $ac_n "checking for C++ isinf""... $ac_c" 1>&6
-echo "configure:5408: checking for C++ isinf" >&5
+echo "configure:5418: checking for C++ isinf" >&5
 if eval "test \"`echo '$''{'cctk_cv_cxx_$cctk_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5424,7 +5434,7 @@ for ac_nargs in 1 2; do
     2) ac_args='(1.0, 1.0)'; ac_argsf='(1.0f, 1.0f)' ;;
   esac
   cat > conftest.$ac_ext <<EOF
-#line 5428 "configure"
+#line 5438 "configure"
 #include "confdefs.h"
 
 /* See note in cctk_Math.h regarding these include statements */
@@ -5445,7 +5455,7 @@ using namespace std;
 
 ; return 0; }
 EOF
-if { (eval echo configure:5449: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5459: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_cxx_func="$ac_func"; break 2
 else
@@ -5483,7 +5493,7 @@ cctk_func=`echo isnan | sed 'y%./+-%__p_%'`
  cctk_tr_func=`echo $cctk_func |
    sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
 echo $ac_n "checking for C++ isnan""... $ac_c" 1>&6
-echo "configure:5487: checking for C++ isnan" >&5
+echo "configure:5497: checking for C++ isnan" >&5
 if eval "test \"`echo '$''{'cctk_cv_cxx_$cctk_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5503,7 +5513,7 @@ for ac_nargs in 1 2; do
     2) ac_args='(1.0, 1.0)'; ac_argsf='(1.0f, 1.0f)' ;;
   esac
   cat > conftest.$ac_ext <<EOF
-#line 5507 "configure"
+#line 5517 "configure"
 #include "confdefs.h"
 
 /* See note in cctk_Math.h regarding these include statements */
@@ -5524,7 +5534,7 @@ using namespace std;
 
 ; return 0; }
 EOF
-if { (eval echo configure:5528: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5538: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_cxx_func="$ac_func"; break 2
 else
@@ -5562,7 +5572,7 @@ cctk_func=`echo isnormal | sed 'y%./+-%__p_%'`
  cctk_tr_func=`echo $cctk_func |
    sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
 echo $ac_n "checking for C++ isnormal""... $ac_c" 1>&6
-echo "configure:5566: checking for C++ isnormal" >&5
+echo "configure:5576: checking for C++ isnormal" >&5
 if eval "test \"`echo '$''{'cctk_cv_cxx_$cctk_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5582,7 +5592,7 @@ for ac_nargs in 1 2; do
     2) ac_args='(1.0, 1.0)'; ac_argsf='(1.0f, 1.0f)' ;;
   esac
   cat > conftest.$ac_ext <<EOF
-#line 5586 "configure"
+#line 5596 "configure"
 #include "confdefs.h"
 
 /* See note in cctk_Math.h regarding these include statements */
@@ -5603,7 +5613,7 @@ using namespace std;
 
 ; return 0; }
 EOF
-if { (eval echo configure:5607: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5617: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_cxx_func="$ac_func"; break 2
 else
@@ -5641,7 +5651,7 @@ cctk_func=`echo signbit | sed 'y%./+-%__p_%'`
  cctk_tr_func=`echo $cctk_func |
    sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
 echo $ac_n "checking for C++ signbit""... $ac_c" 1>&6
-echo "configure:5645: checking for C++ signbit" >&5
+echo "configure:5655: checking for C++ signbit" >&5
 if eval "test \"`echo '$''{'cctk_cv_cxx_$cctk_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5661,7 +5671,7 @@ for ac_nargs in 1 2; do
     2) ac_args='(1.0, 1.0)'; ac_argsf='(1.0f, 1.0f)' ;;
   esac
   cat > conftest.$ac_ext <<EOF
-#line 5665 "configure"
+#line 5675 "configure"
 #include "confdefs.h"
 
 /* See note in cctk_Math.h regarding these include statements */
@@ -5682,7 +5692,7 @@ using namespace std;
 
 ; return 0; }
 EOF
-if { (eval echo configure:5686: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5696: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_cxx_func="$ac_func"; break 2
 else
@@ -5718,13 +5728,13 @@ esac
 
 
 echo $ac_n "checking for C _Pragma""... $ac_c" 1>&6
-echo "configure:5722: checking for C _Pragma" >&5
+echo "configure:5732: checking for C _Pragma" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c__Pragma'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c__Pragma=no
 cat > conftest.$ac_ext <<EOF
-#line 5728 "configure"
+#line 5738 "configure"
 #include "confdefs.h"
 
 #define LOOP(i) _Pragma("omp for") for (int i=0; i<10; ++i)
@@ -5739,7 +5749,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:5743: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5753: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c__Pragma=yes
 else
@@ -5777,20 +5787,20 @@ fi
 
 # Find out whether the C compiler supports __attribute__((noinline))
 echo $ac_n "checking for C function __attribute__((__noinline__))""... $ac_c" 1>&6
-echo "configure:5781: checking for C function __attribute__((__noinline__))" >&5
+echo "configure:5791: checking for C function __attribute__((__noinline__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c_attribute_noinline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c_attribute_noinline=no
 cat > conftest.$ac_ext <<EOF
-#line 5787 "configure"
+#line 5797 "configure"
 #include "confdefs.h"
 
 int main() {
 double foo (double) __attribute__((__noinline__));
 ; return 0; }
 EOF
-if { (eval echo configure:5794: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5804: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c_attribute_noinline=yes
 else
@@ -5812,7 +5822,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX function __attribute__((__noinline__))""... $ac_c" 1>&6
-echo "configure:5816: checking for CXX function __attribute__((__noinline__))" >&5
+echo "configure:5826: checking for CXX function __attribute__((__noinline__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_attribute_noinline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5826,14 +5836,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 5830 "configure"
+#line 5840 "configure"
 #include "confdefs.h"
 
 int main() {
 double foo (double) __attribute__((__noinline__));
 ; return 0; }
 EOF
-if { (eval echo configure:5837: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5847: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_attribute_noinline=yes
 else
@@ -5862,7 +5872,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX member function __attribute__((__noinline__))""... $ac_c" 1>&6
-echo "configure:5866: checking for CXX member function __attribute__((__noinline__))" >&5
+echo "configure:5876: checking for CXX member function __attribute__((__noinline__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_member_attribute_noinline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5876,14 +5886,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 5880 "configure"
+#line 5890 "configure"
 #include "confdefs.h"
 
 int main() {
 struct bar { double foo (double) __attribute__((__noinline__)); };
 ; return 0; }
 EOF
-if { (eval echo configure:5887: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5897: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_member_attribute_noinline=yes
 else
@@ -5914,20 +5924,20 @@ fi
 
 # Find out whether the C compiler supports __attribute__((always_inline))
 echo $ac_n "checking for C function __attribute__((__always_inline__))""... $ac_c" 1>&6
-echo "configure:5918: checking for C function __attribute__((__always_inline__))" >&5
+echo "configure:5928: checking for C function __attribute__((__always_inline__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c_attribute_always_inline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c_attribute_always_inline=no
 cat > conftest.$ac_ext <<EOF
-#line 5924 "configure"
+#line 5934 "configure"
 #include "confdefs.h"
 
 int main() {
 double foo (double) __attribute__((__always_inline__));
 ; return 0; }
 EOF
-if { (eval echo configure:5931: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5941: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c_attribute_always_inline=yes
 else
@@ -5949,7 +5959,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX function __attribute__((__always_inline__))""... $ac_c" 1>&6
-echo "configure:5953: checking for CXX function __attribute__((__always_inline__))" >&5
+echo "configure:5963: checking for CXX function __attribute__((__always_inline__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_attribute_always_inline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5963,14 +5973,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 5967 "configure"
+#line 5977 "configure"
 #include "confdefs.h"
 
 int main() {
 double foo (double) __attribute__((__always_inline__));
 ; return 0; }
 EOF
-if { (eval echo configure:5974: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5984: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_attribute_always_inline=yes
 else
@@ -5999,7 +6009,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX member function __attribute__((__always_inline__))""... $ac_c" 1>&6
-echo "configure:6003: checking for CXX member function __attribute__((__always_inline__))" >&5
+echo "configure:6013: checking for CXX member function __attribute__((__always_inline__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_member_attribute_always_inline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6013,14 +6023,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 6017 "configure"
+#line 6027 "configure"
 #include "confdefs.h"
 
 int main() {
 struct bar { double foo (double) __attribute__((__always_inline__)); };
 ; return 0; }
 EOF
-if { (eval echo configure:6024: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6034: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_member_attribute_always_inline=yes
 else
@@ -6051,20 +6061,20 @@ fi
 
 # Find out whether the C compiler supports __attribute__((unused))
 echo $ac_n "checking for C __attribute__((__unused__))""... $ac_c" 1>&6
-echo "configure:6055: checking for C __attribute__((__unused__))" >&5
+echo "configure:6065: checking for C __attribute__((__unused__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c_attribute_unused'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c_attribute_unused=no
 cat > conftest.$ac_ext <<EOF
-#line 6061 "configure"
+#line 6071 "configure"
 #include "confdefs.h"
 
 int main() {
 double * foo __attribute__((__unused__));
 ; return 0; }
 EOF
-if { (eval echo configure:6068: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6078: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c_attribute_unused=yes
 else
@@ -6086,7 +6096,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX __attribute__((__unused__))""... $ac_c" 1>&6
-echo "configure:6090: checking for CXX __attribute__((__unused__))" >&5
+echo "configure:6100: checking for CXX __attribute__((__unused__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_attribute_unused'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6100,14 +6110,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 6104 "configure"
+#line 6114 "configure"
 #include "confdefs.h"
 
 int main() {
 double * foo __attribute__((__unused__));
 ; return 0; }
 EOF
-if { (eval echo configure:6111: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6121: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_attribute_unused=yes
 else
@@ -6138,20 +6148,20 @@ fi
 
 # Find out whether the C compiler supports __attribute__((aligned(...)))
 echo $ac_n "checking for C __attribute__((__aligned__(...)))""... $ac_c" 1>&6
-echo "configure:6142: checking for C __attribute__((__aligned__(...)))" >&5
+echo "configure:6152: checking for C __attribute__((__aligned__(...)))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c_attribute_aligned'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c_attribute_aligned=no
 cat > conftest.$ac_ext <<EOF
-#line 6148 "configure"
+#line 6158 "configure"
 #include "confdefs.h"
 
 int main() {
 double * foo __attribute__((__aligned__(16)));
 ; return 0; }
 EOF
-if { (eval echo configure:6155: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6165: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c_attribute_aligned=yes
 else
@@ -6173,7 +6183,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX __attribute__((__aligned__(...)))""... $ac_c" 1>&6
-echo "configure:6177: checking for CXX __attribute__((__aligned__(...)))" >&5
+echo "configure:6187: checking for CXX __attribute__((__aligned__(...)))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_attribute_aligned'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6187,14 +6197,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 6191 "configure"
+#line 6201 "configure"
 #include "confdefs.h"
 
 int main() {
 double * foo __attribute__((__aligned__(16)));
 ; return 0; }
 EOF
-if { (eval echo configure:6198: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6208: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_attribute_aligned=yes
 else
@@ -6225,20 +6235,20 @@ fi
 
 # Find out whether the C compiler supports __attribute__((cold))
 echo $ac_n "checking for C __attribute__((__cold__))""... $ac_c" 1>&6
-echo "configure:6229: checking for C __attribute__((__cold__))" >&5
+echo "configure:6239: checking for C __attribute__((__cold__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c_attribute_cold'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c_attribute_cold=no
 cat > conftest.$ac_ext <<EOF
-#line 6235 "configure"
+#line 6245 "configure"
 #include "confdefs.h"
 
 int main() {
 double * foo __attribute__((__cold__));
 ; return 0; }
 EOF
-if { (eval echo configure:6242: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6252: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c_attribute_cold=yes
 else
@@ -6260,7 +6270,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX __attribute__((__cold__))""... $ac_c" 1>&6
-echo "configure:6264: checking for CXX __attribute__((__cold__))" >&5
+echo "configure:6274: checking for CXX __attribute__((__cold__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_attribute_cold'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6274,14 +6284,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 6278 "configure"
+#line 6288 "configure"
 #include "confdefs.h"
 
 int main() {
 double * foo __attribute__((__cold__));
 ; return 0; }
 EOF
-if { (eval echo configure:6285: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6295: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_attribute_cold=yes
 else
@@ -6312,20 +6322,20 @@ fi
 
 # Find out whether the C compiler supports __attribute__((hot))
 echo $ac_n "checking for C __attribute__((__hot__))""... $ac_c" 1>&6
-echo "configure:6316: checking for C __attribute__((__hot__))" >&5
+echo "configure:6326: checking for C __attribute__((__hot__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c_attribute_hot'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c_attribute_hot=no
 cat > conftest.$ac_ext <<EOF
-#line 6322 "configure"
+#line 6332 "configure"
 #include "confdefs.h"
 
 int main() {
 double * foo __attribute__((__hot__));
 ; return 0; }
 EOF
-if { (eval echo configure:6329: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6339: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c_attribute_hot=yes
 else
@@ -6347,7 +6357,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX __attribute__((__hot__))""... $ac_c" 1>&6
-echo "configure:6351: checking for CXX __attribute__((__hot__))" >&5
+echo "configure:6361: checking for CXX __attribute__((__hot__))" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_attribute_hot'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6361,14 +6371,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 6365 "configure"
+#line 6375 "configure"
 #include "confdefs.h"
 
 int main() {
 double * foo __attribute__((__hot__));
 ; return 0; }
 EOF
-if { (eval echo configure:6372: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6382: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_attribute_hot=yes
 else
@@ -6397,22 +6407,196 @@ EOF
 fi
 
 
+# Find out whether the C compiler supports __attribute__((format(...)))
+echo $ac_n "checking for C __attribute__((__format__(printf(1, 2))))""... $ac_c" 1>&6
+echo "configure:6413: checking for C __attribute__((__format__(printf(1, 2))))" >&5
+if eval "test \"`echo '$''{'cctk_cv_have_c_attribute_format'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cctk_cv_have_c_attribute_format=no
+cat > conftest.$ac_ext <<EOF
+#line 6419 "configure"
+#include "confdefs.h"
+void xyzzy(const char*, ...) __attribute__((__format__(printf(1, 2))));
+int main() {
+xyzzy("%d",42);
+; return 0; }
+EOF
+if { (eval echo configure:6426: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  cctk_cv_have_c_attribute_format=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  cctk_cv_have_c_attribute_format=no
+fi
+rm -f conftest*
+
+fi
+
+echo "$ac_t""$cctk_cv_have_c_attribute_format" 1>&6
+if test "$cctk_cv_have_c_attribute_format" = "yes" ; then
+   cat >> confdefs.h <<\EOF
+#define HAVE_CCTK_C_ATTRIBUTE_FORMAT 1
+EOF
+
+fi
+
+echo $ac_n "checking for CXX __attribute__((__format__))""... $ac_c" 1>&6
+echo "configure:6448: checking for CXX __attribute__((__format__))" >&5
+if eval "test \"`echo '$''{'cctk_cv_have_cxx_attribute_format'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cctk_cv_have_cxx_attribute_format=no
+
+ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+
+cat > conftest.$ac_ext <<EOF
+#line 6462 "configure"
+#include "confdefs.h"
+void xyzzy(const char*, ...) __attribute__((__format__(printf(1, 2))));
+int main() {
+xyzzy("%d",42);
+; return 0; }
+EOF
+if { (eval echo configure:6469: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  cctk_cv_have_cxx_attribute_format=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  cctk_cv_have_cxx_attribute_format=no
+fi
+rm -f conftest*
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+
+fi
+
+echo "$ac_t""$cctk_cv_have_cxx_attribute_format" 1>&6
+if test "$cctk_cv_have_cxx_attribute_format" = "yes" ; then
+   cat >> confdefs.h <<\EOF
+#define HAVE_CCTK_CXX_ATTRIBUTE_FORMAT 1
+EOF
+
+fi
+
+
+# Find out whether the C compiler supports __attribute__((noreturn))
+echo $ac_n "checking for C __attribute__((__noreturn__))""... $ac_c" 1>&6
+echo "configure:6500: checking for C __attribute__((__noreturn__))" >&5
+if eval "test \"`echo '$''{'cctk_cv_have_c_attribute_noreturn'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cctk_cv_have_c_attribute_noreturn=no
+cat > conftest.$ac_ext <<EOF
+#line 6506 "configure"
+#include "confdefs.h"
+void xyzzy(void) __attribute__((__noreturn__));
+int main() {
+xyzzy()
+; return 0; }
+EOF
+if { (eval echo configure:6513: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  cctk_cv_have_c_attribute_noreturn=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  cctk_cv_have_c_attribute_noreturn=no
+fi
+rm -f conftest*
+
+fi
+
+echo "$ac_t""$cctk_cv_have_c_attribute_noreturn" 1>&6
+if test "$cctk_cv_have_c_attribute_noreturn" = "yes" ; then
+   cat >> confdefs.h <<\EOF
+#define HAVE_CCTK_C_ATTRIBUTE_NORETURN 1
+EOF
+
+fi
+
+echo $ac_n "checking for CXX __attribute__((__noreturn__))""... $ac_c" 1>&6
+echo "configure:6535: checking for CXX __attribute__((__noreturn__))" >&5
+if eval "test \"`echo '$''{'cctk_cv_have_cxx_attribute_noreturn'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cctk_cv_have_cxx_attribute_noreturn=no
+
+ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+
+cat > conftest.$ac_ext <<EOF
+#line 6549 "configure"
+#include "confdefs.h"
+void xyzzy(void) __attribute__((__noreturn__));
+int main() {
+xyzzy()
+; return 0; }
+EOF
+if { (eval echo configure:6556: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  cctk_cv_have_cxx_attribute_noreturn=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  cctk_cv_have_cxx_attribute_noreturn=no
+fi
+rm -f conftest*
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+
+fi
+
+echo "$ac_t""$cctk_cv_have_cxx_attribute_noreturn" 1>&6
+if test "$cctk_cv_have_cxx_attribute_noreturn" = "yes" ; then
+   cat >> confdefs.h <<\EOF
+#define HAVE_CCTK_CXX_ATTRIBUTE_NORETURN 1
+EOF
+
+fi
+
+
 # Find out whether the C compiler supports __builtin_expect
 echo $ac_n "checking for C __builtin_expect""... $ac_c" 1>&6
-echo "configure:6403: checking for C __builtin_expect" >&5
+echo "configure:6587: checking for C __builtin_expect" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_c_builtin_expect'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cctk_cv_have_c_builtin_expect=no
 cat > conftest.$ac_ext <<EOF
-#line 6409 "configure"
+#line 6593 "configure"
 #include "confdefs.h"
 
 int main() {
 __builtin_expect(0,0);
 ; return 0; }
 EOF
-if { (eval echo configure:6416: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6600: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c_builtin_expect=yes
 else
@@ -6434,7 +6618,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX __builtin_expect""... $ac_c" 1>&6
-echo "configure:6438: checking for CXX __builtin_expect" >&5
+echo "configure:6622: checking for CXX __builtin_expect" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_builtin_expect'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6448,14 +6632,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 6452 "configure"
+#line 6636 "configure"
 #include "confdefs.h"
 
 int main() {
 __builtin_expect(0,0);
 ; return 0; }
 EOF
-if { (eval echo configure:6459: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6643: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   cctk_cv_have_cxx_builtin_expect=yes
 else
@@ -6484,13 +6668,100 @@ EOF
 fi
 
 
+# Find out whether the C compiler supports __builtin_unreachable
+echo $ac_n "checking for C __builtin_unreachable""... $ac_c" 1>&6
+echo "configure:6674: checking for C __builtin_unreachable" >&5
+if eval "test \"`echo '$''{'cctk_cv_have_c_builtin_unreachable'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cctk_cv_have_c_builtin_unreachable=no
+cat > conftest.$ac_ext <<EOF
+#line 6680 "configure"
+#include "confdefs.h"
+
+int main() {
+__builtin_unreachable();
+; return 0; }
+EOF
+if { (eval echo configure:6687: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  cctk_cv_have_c_builtin_unreachable=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  cctk_cv_have_c_builtin_unreachable=no
+fi
+rm -f conftest*
+
+fi
+
+echo "$ac_t""$cctk_cv_have_c_builtin_unreachable" 1>&6
+if test "$cctk_cv_have_c_builtin_unreachable" = "yes" ; then
+   cat >> confdefs.h <<\EOF
+#define HAVE_CCTK_C_BUILTIN_UNREACHABLE 1
+EOF
+
+fi
+
+echo $ac_n "checking for CXX __builtin_unreachable""... $ac_c" 1>&6
+echo "configure:6709: checking for CXX __builtin_unreachable" >&5
+if eval "test \"`echo '$''{'cctk_cv_have_cxx_builtin_unreachable'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cctk_cv_have_cxx_builtin_unreachable=no
+
+ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+
+cat > conftest.$ac_ext <<EOF
+#line 6723 "configure"
+#include "confdefs.h"
+
+int main() {
+__builtin_unreachable();
+; return 0; }
+EOF
+if { (eval echo configure:6730: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  cctk_cv_have_cxx_builtin_unreachable=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  cctk_cv_have_cxx_builtin_unreachable=no
+fi
+rm -f conftest*
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+
+fi
+
+echo "$ac_t""$cctk_cv_have_cxx_builtin_unreachable" 1>&6
+if test "$cctk_cv_have_cxx_builtin_unreachable" = "yes" ; then
+   cat >> confdefs.h <<\EOF
+#define HAVE_CCTK_CXX_BUILTIN_UNREACHABLE 1
+EOF
+
+fi
+
+
 if test "x$REAL16_KIND" = 'x'; then
   REAL16_KIND=16
 fi
 COMPLEX32_KIND=$(( $REAL16_KIND * 2 ))
 
 echo $ac_n "checking for Fortran REAL*4""... $ac_c" 1>&6
-echo "configure:6494: checking for Fortran REAL*4" >&5
+echo "configure:6765: checking for Fortran REAL*4" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_real4'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6507,7 +6778,7 @@ cat > conftest.$ac_ext <<EOF
       REAL*4 a
       end
 EOF
-if { (eval echo configure:6511: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6782: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_real4=yes
 else
@@ -6536,7 +6807,7 @@ EOF
 fi
 
 echo $ac_n "checking for Fortran REAL*8""... $ac_c" 1>&6
-echo "configure:6540: checking for Fortran REAL*8" >&5
+echo "configure:6811: checking for Fortran REAL*8" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_real8'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6553,7 +6824,7 @@ cat > conftest.$ac_ext <<EOF
       REAL*8 a
       end
 EOF
-if { (eval echo configure:6557: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6828: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_real8=yes
 else
@@ -6582,7 +6853,7 @@ EOF
 fi
 
 echo $ac_n "checking for Fortran REAL*16""... $ac_c" 1>&6
-echo "configure:6586: checking for Fortran REAL*16" >&5
+echo "configure:6857: checking for Fortran REAL*16" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_real16'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6599,7 +6870,7 @@ cat > conftest.$ac_ext <<EOF
       REAL*$REAL16_KIND a
       end
 EOF
-if { (eval echo configure:6603: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6874: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_real16=yes
 else
@@ -6629,7 +6900,7 @@ fi
 
 
 echo $ac_n "checking for Fortran COMPLEX*8""... $ac_c" 1>&6
-echo "configure:6633: checking for Fortran COMPLEX*8" >&5
+echo "configure:6904: checking for Fortran COMPLEX*8" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_complex8'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6646,7 +6917,7 @@ cat > conftest.$ac_ext <<EOF
       COMPLEX*8 a
       end
 EOF
-if { (eval echo configure:6650: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6921: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_complex8=yes
 else
@@ -6675,7 +6946,7 @@ EOF
 fi
 
 echo $ac_n "checking for Fortran COMPLEX*16""... $ac_c" 1>&6
-echo "configure:6679: checking for Fortran COMPLEX*16" >&5
+echo "configure:6950: checking for Fortran COMPLEX*16" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_complex16'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6692,7 +6963,7 @@ cat > conftest.$ac_ext <<EOF
       COMPLEX*16 a
       end
 EOF
-if { (eval echo configure:6696: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6967: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_complex16=yes
 else
@@ -6721,7 +6992,7 @@ EOF
 fi
 
 echo $ac_n "checking for Fortran COMPLEX*32""... $ac_c" 1>&6
-echo "configure:6725: checking for Fortran COMPLEX*32" >&5
+echo "configure:6996: checking for Fortran COMPLEX*32" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_complex32'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6738,7 +7009,7 @@ cat > conftest.$ac_ext <<EOF
       COMPLEX*$COMPLEX32_KIND a
       end
 EOF
-if { (eval echo configure:6742: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7013: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_complex32=yes
 else
@@ -6785,12 +7056,12 @@ for cctk_hdr in cxxabi.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:6789: checking for $cctk_hdr" >&5
+echo "configure:7060: checking for $cctk_hdr" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_$cctk_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6794 "configure"
+#line 7065 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -6798,7 +7069,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:6802: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7073: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -6822,19 +7093,19 @@ fi
 done
 
 echo $ac_n "checking for __cxa_demangle""... $ac_c" 1>&6
-echo "configure:6826: checking for __cxa_demangle" >&5
+echo "configure:7097: checking for __cxa_demangle" >&5
 if eval "test \"`echo '$''{'cctk_cv_have___cxa_demangle'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6831 "configure"
+#line 7102 "configure"
 #include "confdefs.h"
 #include <cxxabi.h>
 int main() {
 abi::__cxa_demangle(0,0,0,0)
 ; return 0; }
 EOF
-if { (eval echo configure:6838: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7109: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have___cxa_demangle=yes"
 else
@@ -6866,12 +7137,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 ac_member_var=`echo Dl_info'_'dli_sname | sed 'y% %_%'`
 echo $ac_n "checking for Dl_info.dli_sname""... $ac_c" 1>&6
-echo "configure:6870: checking for Dl_info.dli_sname" >&5
+echo "configure:7141: checking for Dl_info.dli_sname" >&5
 if eval "test \"`echo '$''{'ac_cv_member_$ac_member_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6875 "configure"
+#line 7146 "configure"
 #include "confdefs.h"
 #define _GNU_SOURCE 1
    #include <dlfcn.h> 
@@ -6881,7 +7152,7 @@ if (ac_aggr.dli_sname)
 return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:6885: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7156: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_member_$ac_member_var=yes"
 else
@@ -6893,7 +7164,7 @@ fi
 rm -f conftest*
 if eval "test \"`echo '$''{'ac_cv_member_$ac_member_var'}'`\" = no"; then
 cat > conftest.$ac_ext <<EOF
-#line 6897 "configure"
+#line 7168 "configure"
 #include "confdefs.h"
 #define _GNU_SOURCE 1
    #include <dlfcn.h> 
@@ -6903,7 +7174,7 @@ if (sizeof ac_aggr.dli_sname)
 return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:6907: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7178: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_member_$ac_member_var=yes"
 else
@@ -6921,12 +7192,12 @@ if eval "test \"`echo '$ac_cv_member_'$ac_member_var`\" = yes"; then
 for ac_func in dladdr
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:6925: checking for $ac_func" >&5
+echo "configure:7196: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6930 "configure"
+#line 7201 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -6949,7 +7220,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6953: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7224: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -6971,7 +7242,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for dladdr in library dl""... $ac_c" 1>&6
-echo "configure:6975: checking for dladdr in library dl" >&5
+echo "configure:7246: checking for dladdr in library dl" >&5
 ac_lib_var=`echo dl'_'dladdr | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6980,7 +7251,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="dl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6984 "configure"
+#line 7255 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6991,7 +7262,7 @@ int main() {
 dladdr()
 ; return 0; }
 EOF
-if { (eval echo configure:6995: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7266: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7039,12 +7310,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in backtrace
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:7043: checking for $ac_func" >&5
+echo "configure:7314: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7048 "configure"
+#line 7319 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -7067,7 +7338,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7071: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7342: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -7097,12 +7368,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in backtrace_symbols
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:7101: checking for $ac_func" >&5
+echo "configure:7372: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7106 "configure"
+#line 7377 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -7125,7 +7396,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7129: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7400: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -7155,12 +7426,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in crypt
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:7159: checking for $ac_func" >&5
+echo "configure:7430: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7164 "configure"
+#line 7435 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -7183,7 +7454,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7187: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7458: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -7205,7 +7476,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for crypt in library crypt""... $ac_c" 1>&6
-echo "configure:7209: checking for crypt in library crypt" >&5
+echo "configure:7480: checking for crypt in library crypt" >&5
 ac_lib_var=`echo crypt'_'crypt | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7214,7 +7485,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="crypt  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7218 "configure"
+#line 7489 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7225,7 +7496,7 @@ int main() {
 crypt()
 ; return 0; }
 EOF
-if { (eval echo configure:7229: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7500: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7265,7 +7536,7 @@ done
 
 
 echo $ac_n "checking for finite in header math.h and library m""... $ac_c" 1>&6
-echo "configure:7269: checking for finite in header math.h and library m" >&5
+echo "configure:7540: checking for finite in header math.h and library m" >&5
 ac_lib_var=`echo math.h'_'m'_'finite | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7274,7 +7545,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7278 "configure"
+#line 7549 "configure"
 #include "confdefs.h"
 #include <math.h>
 
@@ -7282,7 +7553,7 @@ int main() {
 finite (1.0)
 ; return 0; }
 EOF
-if { (eval echo configure:7286: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7557: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7323,7 +7594,7 @@ fi
 
 
 echo $ac_n "checking for copysign in header math.h and library m""... $ac_c" 1>&6
-echo "configure:7327: checking for copysign in header math.h and library m" >&5
+echo "configure:7598: checking for copysign in header math.h and library m" >&5
 ac_lib_var=`echo math.h'_'m'_'copysign | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7332,7 +7603,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7336 "configure"
+#line 7607 "configure"
 #include "confdefs.h"
 #include <math.h>
 
@@ -7340,7 +7611,7 @@ int main() {
 copysign (1.0, 1.0)
 ; return 0; }
 EOF
-if { (eval echo configure:7344: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7615: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7381,7 +7652,7 @@ fi
 
 
 echo $ac_n "checking for fpclassify in header math.h and library m""... $ac_c" 1>&6
-echo "configure:7385: checking for fpclassify in header math.h and library m" >&5
+echo "configure:7656: checking for fpclassify in header math.h and library m" >&5
 ac_lib_var=`echo math.h'_'m'_'fpclassify | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7390,7 +7661,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7394 "configure"
+#line 7665 "configure"
 #include "confdefs.h"
 #include <math.h>
 
@@ -7398,7 +7669,7 @@ int main() {
 fpclassify (1.0)
 ; return 0; }
 EOF
-if { (eval echo configure:7402: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7673: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7439,7 +7710,7 @@ fi
 
 
 echo $ac_n "checking for isfinite in header math.h and library m""... $ac_c" 1>&6
-echo "configure:7443: checking for isfinite in header math.h and library m" >&5
+echo "configure:7714: checking for isfinite in header math.h and library m" >&5
 ac_lib_var=`echo math.h'_'m'_'isfinite | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7448,7 +7719,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7452 "configure"
+#line 7723 "configure"
 #include "confdefs.h"
 #include <math.h>
 
@@ -7456,7 +7727,7 @@ int main() {
 isfinite (1.0)
 ; return 0; }
 EOF
-if { (eval echo configure:7460: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7731: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7497,7 +7768,7 @@ fi
 
 
 echo $ac_n "checking for isinf in header math.h and library m""... $ac_c" 1>&6
-echo "configure:7501: checking for isinf in header math.h and library m" >&5
+echo "configure:7772: checking for isinf in header math.h and library m" >&5
 ac_lib_var=`echo math.h'_'m'_'isinf | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7506,7 +7777,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7510 "configure"
+#line 7781 "configure"
 #include "confdefs.h"
 #include <math.h>
 
@@ -7514,7 +7785,7 @@ int main() {
 isinf (1.0)
 ; return 0; }
 EOF
-if { (eval echo configure:7518: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7789: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7555,7 +7826,7 @@ fi
 
 
 echo $ac_n "checking for isnan in header math.h and library m""... $ac_c" 1>&6
-echo "configure:7559: checking for isnan in header math.h and library m" >&5
+echo "configure:7830: checking for isnan in header math.h and library m" >&5
 ac_lib_var=`echo math.h'_'m'_'isnan | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7564,7 +7835,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7568 "configure"
+#line 7839 "configure"
 #include "confdefs.h"
 #include <math.h>
 
@@ -7572,7 +7843,7 @@ int main() {
 isnan (1.0)
 ; return 0; }
 EOF
-if { (eval echo configure:7576: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7847: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7613,7 +7884,7 @@ fi
 
 
 echo $ac_n "checking for isnormal in header math.h and library m""... $ac_c" 1>&6
-echo "configure:7617: checking for isnormal in header math.h and library m" >&5
+echo "configure:7888: checking for isnormal in header math.h and library m" >&5
 ac_lib_var=`echo math.h'_'m'_'isnormal | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7622,7 +7893,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7626 "configure"
+#line 7897 "configure"
 #include "confdefs.h"
 #include <math.h>
 
@@ -7630,7 +7901,7 @@ int main() {
 isnormal (1.0)
 ; return 0; }
 EOF
-if { (eval echo configure:7634: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7905: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7671,7 +7942,7 @@ fi
 
 
 echo $ac_n "checking for signbit in header math.h and library m""... $ac_c" 1>&6
-echo "configure:7675: checking for signbit in header math.h and library m" >&5
+echo "configure:7946: checking for signbit in header math.h and library m" >&5
 ac_lib_var=`echo math.h'_'m'_'signbit | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7680,7 +7951,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7684 "configure"
+#line 7955 "configure"
 #include "confdefs.h"
 #include <math.h>
 
@@ -7688,7 +7959,7 @@ int main() {
 signbit (1.0)
 ; return 0; }
 EOF
-if { (eval echo configure:7692: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7963: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7733,12 +8004,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in mkstemp
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:7737: checking for $ac_func" >&5
+echo "configure:8008: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7742 "configure"
+#line 8013 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -7761,7 +8032,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7765: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8036: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -7783,7 +8054,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for mkstemp in library c""... $ac_c" 1>&6
-echo "configure:7787: checking for mkstemp in library c" >&5
+echo "configure:8058: checking for mkstemp in library c" >&5
 ac_lib_var=`echo c'_'mkstemp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7792,18 +8063,18 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="c  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7796 "configure"
+#line 8067 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
-char UoapGb;
+char q6anjt;
 
 int main() {
 mkstemp()
 ; return 0; }
 EOF
-if { (eval echo configure:7807: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8078: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7843,19 +8114,19 @@ done
 
 
 echo $ac_n "checking for va_copy""... $ac_c" 1>&6
-echo "configure:7847: checking for va_copy" >&5
+echo "configure:8118: checking for va_copy" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_va_copy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7852 "configure"
+#line 8123 "configure"
 #include "confdefs.h"
 #include <stdarg.h>
 int main() {
 va_list src, dest; va_copy(dest, src); return 0
 ; return 0; }
 EOF
-if { (eval echo configure:7859: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8130: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "cctk_cv_have_va_copy=yes"
 else
@@ -7894,7 +8165,7 @@ if test "$PTHREADS_MODE" = 'yes'; then
   if test -z "$PTHREAD_LIBS"; then
     PTHREAD_LIBS=
     echo $ac_n "checking for main in library c_r""... $ac_c" 1>&6
-echo "configure:7898: checking for main in library c_r" >&5
+echo "configure:8169: checking for main in library c_r" >&5
 ac_lib_var=`echo c_r'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7903,14 +8174,14 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="c_r  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7907 "configure"
+#line 8178 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:7914: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8185: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7931,7 +8202,7 @@ else
 fi
 
     echo $ac_n "checking for main in library pthread""... $ac_c" 1>&6
-echo "configure:7935: checking for main in library pthread" >&5
+echo "configure:8206: checking for main in library pthread" >&5
 ac_lib_var=`echo pthread'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7940,14 +8211,14 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="pthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7944 "configure"
+#line 8215 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:7951: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8222: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7966,7 +8237,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for main in library pthreads""... $ac_c" 1>&6
-echo "configure:7970: checking for main in library pthreads" >&5
+echo "configure:8241: checking for main in library pthreads" >&5
 ac_lib_var=`echo pthreads'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7975,14 +8246,14 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="pthreads  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7979 "configure"
+#line 8250 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:7986: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8257: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -8492,7 +8763,7 @@ if test "x$CCTK_NEED_X" = 'xyes' ; then
 # Uses ac_ vars as temps to allow command line to override cache and checks.
 # --without-x overrides everything else, but does not touch the cache.
 echo $ac_n "checking for X""... $ac_c" 1>&6
-echo "configure:8496: checking for X" >&5
+echo "configure:8767: checking for X" >&5
 
 # Check whether --with-x or --without-x was given.
 if test "${with_x+set}" = set; then
@@ -8554,12 +8825,12 @@ if test "$ac_x_includes" = NO; then
 
   # First, try using that file with no special directory specified.
 cat > conftest.$ac_ext <<EOF
-#line 8558 "configure"
+#line 8829 "configure"
 #include "confdefs.h"
 #include <$x_direct_test_include>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:8563: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:8834: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -8628,14 +8899,14 @@ if test "$ac_x_libraries" = NO; then
   ac_save_LIBS="$LIBS"
   LIBS="-l$x_direct_test_library $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 8632 "configure"
+#line 8903 "configure"
 #include "confdefs.h"
 
 int main() {
 ${x_direct_test_function}()
 ; return 0; }
 EOF
-if { (eval echo configure:8639: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8910: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   LIBS="$ac_save_LIBS"
 # We can link X programs with no special library path.
diff --git a/lib/make/configure.in b/lib/make/configure.in
index dbbf846b..8ec1f5a2 100644
--- a/lib/make/configure.in
+++ b/lib/make/configure.in
@@ -908,10 +908,22 @@ CCTK_CXX_ATTRIBUTE_COLD
 CCTK_C_ATTRIBUTE_HOT
 CCTK_CXX_ATTRIBUTE_HOT
 
+# Find out whether the C compiler supports __attribute__((format(...)))
+CCTK_C_ATTRIBUTE_FORMAT
+CCTK_CXX_ATTRIBUTE_FORMAT
+
+# Find out whether the C compiler supports __attribute__((noreturn))
+CCTK_C_ATTRIBUTE_NORETURN
+CCTK_CXX_ATTRIBUTE_NORETURN
+
 # Find out whether the C compiler supports __builtin_expect
 CCTK_C_BUILTIN_EXPECT
 CCTK_CXX_BUILTIN_EXPECT
 
+# Find out whether the C compiler supports __builtin_unreachable
+CCTK_C_BUILTIN_UNREACHABLE
+CCTK_CXX_BUILTIN_UNREACHABLE
+
 if test "x$REAL16_KIND" = 'x'; then
   REAL16_KIND=16
 fi
diff --git a/lib/make/force-reconfigure b/lib/make/force-reconfigure
index 7d356d98..b9c41708 100644
--- a/lib/make/force-reconfigure
+++ b/lib/make/force-reconfigure
@@ -36,3 +36,5 @@
 22 Oct 2012: Check availability of isnan etc. in C++
 15 Jan 2013: Add CCTK_ATTRIBUTE_ALWAYS_INLINE
 15 Nov 2013: Introduce CCTK_REAL16_KIND
+25 Feb 2013: Auto-detect attribute((format)), attribute((noreturn)), and
+	     __builtin_unreachable()