From 7f0d29bc6b722a44191aaa06daa01c983e82c66e Mon Sep 17 00:00:00 2001
From: knarf <knarf@17b73243-c579-4c4c-a9d2-2d5706c11dac>
Date: Tue, 23 Nov 2010 19:28:02 +0000
Subject: support __unused__ where known. This let's e.g. gcc know that
 especially the Cactus variables might be unused and should not be reported as
 such. This closes ET ticket #1

git-svn-id: http://svn.cactuscode.org/flesh/trunk@4651 17b73243-c579-4c4c-a9d2-2d5706c11dac
---
 lib/make/configure    | 625 +++++++++++++++++++++++++++++---------------------
 lib/make/configure.in |  10 +-
 2 files changed, 363 insertions(+), 272 deletions(-)

(limited to 'lib/make')

diff --git a/lib/make/configure b/lib/make/configure
index 5b71c519..98ebdd51 100755
--- a/lib/make/configure
+++ b/lib/make/configure
@@ -1937,15 +1937,16 @@ else
 #line 1938 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-int main()
+#include <sys/types.h>
+main()
 {
   FILE *f=fopen("conftestval", "w");
-  if (!f) return(1);
+  if (!f) exit(1);
   fprintf(f, "%d\n", sizeof(long long));
-  return(0);
+  exit(0);
 }
 EOF
-if { (eval echo configure:1949: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1950: \"$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
@@ -1970,7 +1971,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_LONG_INT" ; then
 fi
 
 echo $ac_n "checking size of long int""... $ac_c" 1>&6
-echo "configure:1974: checking size of long int" >&5
+echo "configure:1975: checking size of long int" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long_int'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1978,18 +1979,19 @@ else
   ac_cv_sizeof_long_int=$SIZEOF_LONG_INT
 else
   cat > conftest.$ac_ext <<EOF
-#line 1982 "configure"
+#line 1983 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-int main()
+#include <sys/types.h>
+main()
 {
   FILE *f=fopen("conftestval", "w");
-  if (!f) return(1);
+  if (!f) exit(1);
   fprintf(f, "%d\n", sizeof(long int));
-  return(0);
+  exit(0);
 }
 EOF
-if { (eval echo configure:1993: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1995: \"$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
@@ -2014,7 +2016,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_INT" ; then
 fi
 
 echo $ac_n "checking size of int""... $ac_c" 1>&6
-echo "configure:2018: checking size of int" >&5
+echo "configure:2020: checking size of int" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_int'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2022,18 +2024,19 @@ else
   ac_cv_sizeof_int=$SIZEOF_INT
 else
   cat > conftest.$ac_ext <<EOF
-#line 2026 "configure"
+#line 2028 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-int main()
+#include <sys/types.h>
+main()
 {
   FILE *f=fopen("conftestval", "w");
-  if (!f) return(1);
+  if (!f) exit(1);
   fprintf(f, "%d\n", sizeof(int));
-  return(0);
+  exit(0);
 }
 EOF
-if { (eval echo configure:2037: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2040: \"$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
@@ -2058,7 +2061,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_SHORT_INT" ; then
 fi
 
 echo $ac_n "checking size of short int""... $ac_c" 1>&6
-echo "configure:2062: checking size of short int" >&5
+echo "configure:2065: checking size of short int" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_short_int'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2066,18 +2069,19 @@ else
   ac_cv_sizeof_short_int=$SIZEOF_SHORT_INT
 else
   cat > conftest.$ac_ext <<EOF
-#line 2070 "configure"
+#line 2073 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-int main()
+#include <sys/types.h>
+main()
 {
   FILE *f=fopen("conftestval", "w");
-  if (!f) return(1);
+  if (!f) exit(1);
   fprintf(f, "%d\n", sizeof(short int));
-  return(0);
+  exit(0);
 }
 EOF
-if { (eval echo configure:2081: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2085: \"$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
@@ -2104,7 +2108,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_LONG_DOUBLE" ; then
 fi
 
 echo $ac_n "checking size of long double""... $ac_c" 1>&6
-echo "configure:2108: checking size of long double" >&5
+echo "configure:2112: checking size of long double" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2112,18 +2116,19 @@ else
   ac_cv_sizeof_long_double=$SIZEOF_LONG_DOUBLE
 else
   cat > conftest.$ac_ext <<EOF
-#line 2116 "configure"
+#line 2120 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-int main()
+#include <sys/types.h>
+main()
 {
   FILE *f=fopen("conftestval", "w");
-  if (!f) return(1);
+  if (!f) exit(1);
   fprintf(f, "%d\n", sizeof(long double));
-  return(0);
+  exit(0);
 }
 EOF
-if { (eval echo configure:2127: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2132: \"$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
@@ -2148,7 +2153,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_DOUBLE" ; then
 fi
 
 echo $ac_n "checking size of double""... $ac_c" 1>&6
-echo "configure:2152: checking size of double" >&5
+echo "configure:2157: checking size of double" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2156,18 +2161,19 @@ else
   ac_cv_sizeof_double=$SIZEOF_DOUBLE
 else
   cat > conftest.$ac_ext <<EOF
-#line 2160 "configure"
+#line 2165 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-int main()
+#include <sys/types.h>
+main()
 {
   FILE *f=fopen("conftestval", "w");
-  if (!f) return(1);
+  if (!f) exit(1);
   fprintf(f, "%d\n", sizeof(double));
-  return(0);
+  exit(0);
 }
 EOF
-if { (eval echo configure:2171: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2177: \"$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
@@ -2193,7 +2199,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_FLOAT" ; then
 fi
 
 echo $ac_n "checking size of float""... $ac_c" 1>&6
-echo "configure:2197: checking size of float" >&5
+echo "configure:2203: checking size of float" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_float'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2201,18 +2207,19 @@ else
   ac_cv_sizeof_float=$SIZEOF_FLOAT
 else
   cat > conftest.$ac_ext <<EOF
-#line 2205 "configure"
+#line 2211 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-int main()
+#include <sys/types.h>
+main()
 {
   FILE *f=fopen("conftestval", "w");
-  if (!f) return(1);
+  if (!f) exit(1);
   fprintf(f, "%d\n", sizeof(float));
-  return(0);
+  exit(0);
 }
 EOF
-if { (eval echo configure:2216: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2223: \"$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
@@ -2239,7 +2246,7 @@ if test "x$cross_compiling" = 'xyes' -a -z "$SIZEOF_POINTER" ; then
 fi
 
 echo $ac_n "checking size of char *""... $ac_c" 1>&6
-echo "configure:2243: checking size of char *" >&5
+echo "configure:2250: checking size of char *" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_char_p'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2247,18 +2254,19 @@ else
   ac_cv_sizeof_char_p=$SIZEOF_POINTER
 else
   cat > conftest.$ac_ext <<EOF
-#line 2251 "configure"
+#line 2258 "configure"
 #include "confdefs.h"
 #include <stdio.h>
-int main()
+#include <sys/types.h>
+main()
 {
   FILE *f=fopen("conftestval", "w");
-  if (!f) return(1);
+  if (!f) exit(1);
   fprintf(f, "%d\n", sizeof(char *));
-  return(0);
+  exit(0);
 }
 EOF
-if { (eval echo configure:2262: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2270: \"$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
@@ -2293,7 +2301,7 @@ EOF
 
 else
   echo $ac_n "checking for the null device""... $ac_c" 1>&6
-echo "configure:2297: checking for the null device" >&5
+echo "configure:2305: checking for the null device" >&5
 if eval "test \"`echo '$''{'cctk_cv_nulldevice'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2356,12 +2364,12 @@ ac_link='${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:2360: checking for $ac_func" >&5
+echo "configure:2368: 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 2365 "configure"
+#line 2373 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2384,7 +2392,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2388: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2396: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2406,7 +2414,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for gethostbyname in library nsl""... $ac_c" 1>&6
-echo "configure:2410: checking for gethostbyname in library nsl" >&5
+echo "configure:2418: checking for gethostbyname in library nsl" >&5
 ac_lib_var=`echo nsl'_'gethostbyname | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2415,7 +2423,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="nsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2419 "configure"
+#line 2427 "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
@@ -2426,7 +2434,7 @@ int main() {
 gethostbyname()
 ; return 0; }
 EOF
-if { (eval echo configure:2430: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2438: \"$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
@@ -2457,12 +2465,12 @@ done
 
 # Check if we have mode_t available
 echo $ac_n "checking whether mode_t is defined""... $ac_c" 1>&6
-echo "configure:2461: checking whether mode_t is defined" >&5
+echo "configure:2469: checking whether mode_t is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2466 "configure"
+#line 2474 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -2472,7 +2480,7 @@ int main() {
 mode_t foo; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:2476: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2484: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have_mode_t=yes"
 else
@@ -2498,12 +2506,12 @@ fi
 
 
 echo $ac_n "checking for availability of gettimeofday timing""... $ac_c" 1>&6
-echo "configure:2502: checking for availability of gettimeofday timing" >&5
+echo "configure:2510: checking for availability of gettimeofday timing" >&5
 if eval "test \"`echo '$''{'cctk_cv_time_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2507 "configure"
+#line 2515 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -2511,7 +2519,7 @@ gettimeofday(0, 0);
  return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2515: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2523: \"$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
@@ -2533,12 +2541,12 @@ else
 fi
 if eval "test \"`echo '$cctk_cv_time_gettimeofday'`\" = yes"; then
 echo $ac_n "checking if gettimeofday needs timezone""... $ac_c" 1>&6
-echo "configure:2537: checking if gettimeofday needs timezone" >&5
+echo "configure:2545: checking if gettimeofday needs timezone" >&5
 if eval "test \"`echo '$''{'cctk_cv_time_gettimeofday_timezone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2542 "configure"
+#line 2550 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <sys/time.h>
@@ -2551,7 +2559,7 @@ struct timeval tp;
  return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2555: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2563: \"$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
@@ -2574,12 +2582,12 @@ fi
 fi
 
 echo $ac_n "checking for availability of getrusage timing""... $ac_c" 1>&6
-echo "configure:2578: checking for availability of getrusage timing" >&5
+echo "configure:2586: checking for availability of getrusage timing" >&5
 if eval "test \"`echo '$''{'cctk_cv_time_getrusage'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2583 "configure"
+#line 2591 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <sys/time.h>
@@ -2592,7 +2600,7 @@ struct rusage ru;
  return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2596: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2604: \"$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
@@ -2614,12 +2622,12 @@ else
 fi
 
 echo $ac_n "checking for availability of _ftime timing""... $ac_c" 1>&6
-echo "configure:2618: checking for availability of _ftime timing" >&5
+echo "configure:2626: checking for availability of _ftime timing" >&5
 if eval "test \"`echo '$''{'cctk_cv_time_ftime'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2623 "configure"
+#line 2631 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <time.h>
@@ -2632,7 +2640,7 @@ int main() {
   return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2636: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2644: \"$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
@@ -2659,12 +2667,12 @@ 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:2663: checking for $cctk_hdr" >&5
+echo "configure:2671: 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 2668 "configure"
+#line 2676 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -2672,7 +2680,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:2676: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2684: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -2699,12 +2707,12 @@ 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:2703: checking for $cctk_hdr" >&5
+echo "configure:2711: 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 2708 "configure"
+#line 2716 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -2712,7 +2720,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:2716: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2724: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -2739,12 +2747,12 @@ 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:2743: checking for $cctk_hdr" >&5
+echo "configure:2751: 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 2748 "configure"
+#line 2756 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -2752,7 +2760,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:2756: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2764: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -2779,12 +2787,12 @@ 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:2783: checking for $cctk_hdr" >&5
+echo "configure:2791: 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 2788 "configure"
+#line 2796 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -2792,7 +2800,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:2796: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2804: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -2819,12 +2827,12 @@ 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:2823: checking for $cctk_hdr" >&5
+echo "configure:2831: 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 2828 "configure"
+#line 2836 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -2832,7 +2840,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:2836: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2844: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -2859,12 +2867,12 @@ 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:2863: checking for $cctk_hdr" >&5
+echo "configure:2871: 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 2868 "configure"
+#line 2876 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -2872,7 +2880,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:2876: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2884: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -2899,12 +2907,12 @@ 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:2903: checking for $cctk_hdr" >&5
+echo "configure:2911: 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 2908 "configure"
+#line 2916 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -2912,7 +2920,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:2916: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2924: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -2939,12 +2947,12 @@ 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:2943: checking for $cctk_hdr" >&5
+echo "configure:2951: 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 2948 "configure"
+#line 2956 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -2952,7 +2960,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:2956: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2964: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -2979,12 +2987,12 @@ 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:2983: checking for $cctk_hdr" >&5
+echo "configure:2991: 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 2988 "configure"
+#line 2996 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -2992,7 +3000,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:2996: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3004: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3019,12 +3027,12 @@ 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:3023: checking for $cctk_hdr" >&5
+echo "configure:3031: 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 3028 "configure"
+#line 3036 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3032,7 +3040,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3036: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3044: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3059,12 +3067,12 @@ 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:3063: checking for $cctk_hdr" >&5
+echo "configure:3071: 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 3068 "configure"
+#line 3076 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3072,7 +3080,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3076: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3084: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3099,12 +3107,12 @@ 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:3103: checking for $cctk_hdr" >&5
+echo "configure:3111: 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 3108 "configure"
+#line 3116 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3112,7 +3120,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3116: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3124: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3139,12 +3147,12 @@ 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:3143: checking for $cctk_hdr" >&5
+echo "configure:3151: 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 3148 "configure"
+#line 3156 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3152,7 +3160,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3156: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3164: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3176,12 +3184,12 @@ fi
 done
 
 echo $ac_n "checking for regex.h""... $ac_c" 1>&6
-echo "configure:3180: checking for regex.h" >&5
+echo "configure:3188: checking for regex.h" >&5
 if eval "test \"`echo '$''{'cctk_cv_header_regex_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3185 "configure"
+#line 3193 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <regex.h>
@@ -3189,7 +3197,7 @@ int main() {
 return 0;
 ; return 0; }
 EOF
-if { (eval echo configure:3193: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3201: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_regex_h=yes"
 else
@@ -3214,12 +3222,12 @@ for cctk_hdr in sys/filio.h
 do
 cctk_safe=`echo "$cctk_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $cctk_hdr""... $ac_c" 1>&6
-echo "configure:3218: checking for $cctk_hdr" >&5
+echo "configure:3226: 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 3223 "configure"
+#line 3231 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3229,7 +3237,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3233: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3241: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3256,12 +3264,12 @@ 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:3260: checking for $cctk_hdr" >&5
+echo "configure:3268: 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 3265 "configure"
+#line 3273 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3271,7 +3279,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3275: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3283: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3298,12 +3306,12 @@ 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:3302: checking for $cctk_hdr" >&5
+echo "configure:3310: 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 3307 "configure"
+#line 3315 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3313,7 +3321,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3317: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3325: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3340,12 +3348,12 @@ 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:3344: checking for $cctk_hdr" >&5
+echo "configure:3352: 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 3349 "configure"
+#line 3357 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3355,7 +3363,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3359: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3367: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3382,12 +3390,12 @@ 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:3386: checking for $cctk_hdr" >&5
+echo "configure:3394: 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 3391 "configure"
+#line 3399 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3397,7 +3405,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3401: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3409: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3424,12 +3432,12 @@ 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:3428: checking for $cctk_hdr" >&5
+echo "configure:3436: 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 3433 "configure"
+#line 3441 "configure"
 #include "confdefs.h"
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -3439,7 +3447,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3443: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3451: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3466,12 +3474,12 @@ 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:3470: checking for $cctk_hdr" >&5
+echo "configure:3478: 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 3475 "configure"
+#line 3483 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3479,7 +3487,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3483: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3491: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3506,12 +3514,12 @@ 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:3510: checking for $cctk_hdr" >&5
+echo "configure:3518: 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 3515 "configure"
+#line 3523 "configure"
 #include "confdefs.h"
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
@@ -3521,7 +3529,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3525: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3533: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3548,12 +3556,12 @@ 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:3552: checking for $cctk_hdr" >&5
+echo "configure:3560: 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 3557 "configure"
+#line 3565 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3561,7 +3569,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3565: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3573: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3588,12 +3596,12 @@ 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:3592: checking for $cctk_hdr" >&5
+echo "configure:3600: 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 3597 "configure"
+#line 3605 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -3601,7 +3609,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:3605: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3613: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -3626,12 +3634,12 @@ done
 
 
 echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:3630: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:3638: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3635 "configure"
+#line 3643 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -3640,7 +3648,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:3644: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3652: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -3665,12 +3673,12 @@ fi
 
 # Check if we have socklen_t available
 echo $ac_n "checking whether socklen_t is defined""... $ac_c" 1>&6
-echo "configure:3669: checking whether socklen_t is defined" >&5
+echo "configure:3677: checking whether socklen_t is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_socklen_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3674 "configure"
+#line 3682 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -3690,7 +3698,7 @@ int main() {
 socklen_t foo; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:3694: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3702: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have_socklen_t=yes"
 else
@@ -3715,12 +3723,12 @@ fi
 
 # Check if someone has defined SOCKET
 echo $ac_n "checking whether SOCKET is defined""... $ac_c" 1>&6
-echo "configure:3719: checking whether SOCKET is defined" >&5
+echo "configure:3727: checking whether SOCKET is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_SOCKET'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3724 "configure"
+#line 3732 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -3740,7 +3748,7 @@ int main() {
 SOCKET foo; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:3744: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3752: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have_SOCKET=yes"
 else
@@ -3766,12 +3774,12 @@ fi
 # Check for timing functions
 
 echo $ac_n "checking for hrtime_t""... $ac_c" 1>&6
-echo "configure:3770: checking for hrtime_t" >&5
+echo "configure:3778: checking for hrtime_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_hrtime_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3775 "configure"
+#line 3783 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3802,12 +3810,12 @@ 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:3806: checking for $ac_func" >&5
+echo "configure:3814: 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 3811 "configure"
+#line 3819 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3830,7 +3838,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3834: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3842: \"$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
@@ -3856,10 +3864,10 @@ done
 
 
 echo $ac_n "checking for _rtc intrinsic""... $ac_c" 1>&6
-echo "configure:3860: checking for _rtc intrinsic" >&5
+echo "configure:3868: checking for _rtc intrinsic" >&5
 rtc_ok=yes
 cat > conftest.$ac_ext <<EOF
-#line 3863 "configure"
+#line 3871 "configure"
 #include "confdefs.h"
 #ifdef HAVE_INTRINSICS_H
 #include <intrinsics.h>
@@ -3868,7 +3876,7 @@ int main() {
 _rtc()
 ; return 0; }
 EOF
-if { (eval echo configure:3872: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3880: \"$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
@@ -3889,12 +3897,12 @@ 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:3893: checking for $ac_func" >&5
+echo "configure:3901: 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 3898 "configure"
+#line 3906 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3917,7 +3925,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3921: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3929: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3946,12 +3954,12 @@ ac_link='${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:3950: checking for $ac_func" >&5
+echo "configure:3958: 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 3955 "configure"
+#line 3963 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3974,7 +3982,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3978: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3986: \"$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
@@ -4002,12 +4010,12 @@ done
 
 # Check if M_MMAP_THRESHOLD is defined
 echo $ac_n "checking whether M_MMAP_THRESHOLD is defined""... $ac_c" 1>&6
-echo "configure:4006: checking whether M_MMAP_THRESHOLD is defined" >&5
+echo "configure:4014: checking whether M_MMAP_THRESHOLD is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_M_MMAP_THRESHOLD'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4011 "configure"
+#line 4019 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #ifdef HAVE_MALLOC_H
@@ -4017,7 +4025,7 @@ int main() {
 int x=M_MMAP_THRESHOLD; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:4021: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4029: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have_M_MMAP_THRESHOLD=yes"
 else
@@ -4043,19 +4051,19 @@ fi
 
 # Check if we have __int64
 echo $ac_n "checking if __int64 is defined""... $ac_c" 1>&6
-echo "configure:4047: checking if __int64 is defined" >&5
+echo "configure:4055: checking if __int64 is defined" >&5
 if eval "test \"`echo '$''{'cctk_cv_have___int64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4052 "configure"
+#line 4060 "configure"
 #include "confdefs.h"
 
 int main() {
 __int64 foo; return 0
 ; return 0; }
 EOF
-if { (eval echo configure:4059: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4067: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_have___int64=yes"
 else
@@ -4090,12 +4098,12 @@ cross_compiling=$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:4094: checking for $cctk_hdr" >&5
+echo "configure:4102: 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 4099 "configure"
+#line 4107 "configure"
 #include "confdefs.h"
  
 #include <$cctk_hdr>
@@ -4103,7 +4111,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:4107: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4115: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "cctk_cv_header_$cctk_safe=yes"
 else
@@ -4142,12 +4150,12 @@ 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:4146: checking for $ac_func" >&5
+echo "configure:4154: 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 4151 "configure"
+#line 4159 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4170,7 +4178,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4174: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4182: \"$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
@@ -4213,12 +4221,12 @@ else
 fi
 
 echo $ac_n "checking for working const""... $ac_c" 1>&6
-echo "configure:4217: checking for working const" >&5
+echo "configure:4225: checking for working const" >&5
 if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4222 "configure"
+#line 4230 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4267,7 +4275,7 @@ ccp = (char const *const *) p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:4271: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4279: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_const=yes
 else
@@ -4289,14 +4297,14 @@ fi
 
 #AC_C_INLINE
 echo $ac_n "checking for C inline""... $ac_c" 1>&6
-echo "configure:4293: checking for C inline" >&5
+echo "configure:4301: checking for C inline" >&5
 if eval "test \"`echo '$''{'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 4300 "configure"
+#line 4308 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4304,14 +4312,14 @@ foo();
 ; return 0; }
 EOF
 cat > conftest2.$ac_ext <<EOF
-#line 4308 "configure"
+#line 4316 "configure"
 #include "confdefs.h"
 
 int main2() {
 ;} $ac_kw foo() {
 ; return 0; }
 EOF
-if { (eval echo configure:4315: \"$ac_link conftest2.$ac_ext\") 1>&5; (eval $ac_link conftest2.$ac_ext) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4323: \"$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
@@ -4341,14 +4349,14 @@ EOF
 esac
 
 echo $ac_n "checking for C static inline""... $ac_c" 1>&6
-echo "configure:4345: checking for C static inline" >&5
+echo "configure:4353: checking for C static inline" >&5
 if eval "test \"`echo '$''{'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 4352 "configure"
+#line 4360 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4356,14 +4364,14 @@ int main() {
 ; return 0; }
 EOF
 cat > conftest2.$ac_ext <<EOF
-#line 4360 "configure"
+#line 4368 "configure"
 #include "confdefs.h"
 
 int main2() {
 ;} $ac_kw ifoo(){} foo2(){ifoo();
 ; return 0; }
 EOF
-if { (eval echo configure:4367: \"$ac_link conftest2.$ac_ext\") 1>&5; (eval $ac_link conftest2.$ac_ext) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4375: \"$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
@@ -4389,14 +4397,14 @@ esac
 
 
 echo $ac_n "checking for C restrict""... $ac_c" 1>&6
-echo "configure:4393: checking for C restrict" >&5
+echo "configure:4401: checking for C restrict" >&5
 if eval "test \"`echo '$''{'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 4400 "configure"
+#line 4408 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4408,7 +4416,7 @@ void func (void * arr[$ac_kw]);
 
 ; return 0; }
 EOF
-if { (eval echo configure:4412: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4420: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_c_restrict=$ac_kw; break
 else
@@ -4438,7 +4446,7 @@ EOF
 esac
 
 echo $ac_n "checking for C++ restrict""... $ac_c" 1>&6
-echo "configure:4442: checking for C++ restrict" >&5
+echo "configure:4450: checking for C++ restrict" >&5
 if eval "test \"`echo '$''{'cctk_cv_cxx_restrict'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4453,7 +4461,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
 for ac_kw in restrict __restrict__ __restrict; do
   cat > conftest.$ac_ext <<EOF
-#line 4457 "configure"
+#line 4465 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4464,7 +4472,7 @@ struct tux { char * $ac_kw arr[3]; };
 
 ; return 0; }
 EOF
-if { (eval echo configure:4468: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4476: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_cxx_restrict=$ac_kw; break
 else
@@ -4502,20 +4510,20 @@ esac
 
 
 echo $ac_n "checking for C bool""... $ac_c" 1>&6
-echo "configure:4506: checking for C bool" >&5
+echo "configure:4514: checking for C bool" >&5
 if eval "test \"`echo '$''{'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 4512 "configure"
+#line 4520 "configure"
 #include "confdefs.h"
 
 int main() {
 bool foo;
 ; return 0; }
 EOF
-if { (eval echo configure:4519: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4527: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c_bool=yes
 else
@@ -4537,7 +4545,7 @@ EOF
 fi
 
 echo $ac_n "checking for CXX bool""... $ac_c" 1>&6
-echo "configure:4541: checking for CXX bool" >&5
+echo "configure:4549: checking for CXX bool" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_cxx_bool'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4551,14 +4559,14 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 4555 "configure"
+#line 4563 "configure"
 #include "confdefs.h"
 
 int main() {
 bool foo;
 ; return 0; }
 EOF
-if { (eval echo configure:4562: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4570: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_cxx_bool=yes
 else
@@ -4588,20 +4596,20 @@ fi
 
 
 echo $ac_n "checking for C _Pragma""... $ac_c" 1>&6
-echo "configure:4592: checking for C _Pragma" >&5
+echo "configure:4600: checking for C _Pragma" >&5
 if eval "test \"`echo '$''{'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 4598 "configure"
+#line 4606 "configure"
 #include "confdefs.h"
 
 int main() {
 int x; _Pragma ("omp barrier") x=0;
 ; return 0; }
 EOF
-if { (eval echo configure:4605: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4613: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_c__Pragma=yes
 else
@@ -4636,11 +4644,94 @@ fi
 #CCTK_C_ATTRIBUTE_PURE
 #CCTK_CXX_ATTRIBUTE_PURE
 #CCTK_CXX_MEMBER_ATTRIBUTE_PURE
-#
-## Find out whether the C compiler supports __attribute__((unused))
-#CCTK_C_ATTRIBUTE_UNUSED
-#CCTK_CXX_ATTRIBUTE_UNUSED
-#
+
+# Find out whether the C compiler supports __attribute__((unused))
+echo $ac_n "checking for C __attribute__((__unused__))""... $ac_c" 1>&6
+echo "configure:4651: checking for C __attribute__((__unused__))" >&5
+if eval "test \"`echo '$''{'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 4657 "configure"
+#include "confdefs.h"
+
+int main() {
+double * foo __attribute__((__unused__));
+; return 0; }
+EOF
+if { (eval echo configure:4664: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  cctk_cv_have_c_attribute_unused=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  cctk_cv_have_c_attribute_unused=no
+fi
+rm -f conftest*
+
+fi
+
+echo "$ac_t""$cctk_cv_have_c_attribute_unused" 1>&6
+if test "$cctk_cv_have_c_attribute_unused" = "yes" ; then
+   cat >> confdefs.h <<\EOF
+#define HAVE_CCTK_C_ATTRIBUTE_UNUSED 1
+EOF
+
+fi
+
+echo $ac_n "checking for CXX __attribute__((__unused__))""... $ac_c" 1>&6
+echo "configure:4686: checking for CXX __attribute__((__unused__))" >&5
+if eval "test \"`echo '$''{'cctk_cv_have_cxx_attribute_unused'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cctk_cv_have_cxx_attribute_unused=no
+
+ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$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.$ac_ext <<EOF
+#line 4700 "configure"
+#include "confdefs.h"
+
+int main() {
+double * foo __attribute__((__unused__));
+; return 0; }
+EOF
+if { (eval echo configure:4707: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  cctk_cv_have_cxx_attribute_unused=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  cctk_cv_have_cxx_attribute_unused=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_unused" 1>&6
+if test "$cctk_cv_have_cxx_attribute_unused" = "yes" ; then
+   cat >> confdefs.h <<\EOF
+#define HAVE_CCTK_CXX_ATTRIBUTE_UNUSED 1
+EOF
+
+fi
+
+
 ## Find out whether the C compiler supports __attribute__((cold))
 #CCTK_C_ATTRIBUTE_COLD
 #CCTK_CXX_ATTRIBUTE_COLD
@@ -4649,7 +4740,7 @@ fi
 #CCTK_C_ATTRIBUTE_HOT
 #CCTK_CXX_ATTRIBUTE_HOT
 echo $ac_n "checking for Fortran REAL*4""... $ac_c" 1>&6
-echo "configure:4653: checking for Fortran REAL*4" >&5
+echo "configure:4744: checking for Fortran REAL*4" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_real4'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4665,7 +4756,7 @@ cat > conftest.$ac_ext <<EOF
       REAL*4 a
       end
 EOF
-if { (eval echo configure:4669: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4760: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_real4=yes
 else
@@ -4694,7 +4785,7 @@ EOF
 fi
 
 echo $ac_n "checking for Fortran REAL*8""... $ac_c" 1>&6
-echo "configure:4698: checking for Fortran REAL*8" >&5
+echo "configure:4789: checking for Fortran REAL*8" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_real8'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4710,7 +4801,7 @@ cat > conftest.$ac_ext <<EOF
       REAL*8 a
       end
 EOF
-if { (eval echo configure:4714: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4805: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_real8=yes
 else
@@ -4739,7 +4830,7 @@ EOF
 fi
 
 echo $ac_n "checking for Fortran REAL*16""... $ac_c" 1>&6
-echo "configure:4743: checking for Fortran REAL*16" >&5
+echo "configure:4834: checking for Fortran REAL*16" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_real16'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4755,7 +4846,7 @@ cat > conftest.$ac_ext <<EOF
       REAL*16 a
       end
 EOF
-if { (eval echo configure:4759: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4850: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_real16=yes
 else
@@ -4785,7 +4876,7 @@ fi
 
 
 echo $ac_n "checking for Fortran COMPLEX*8""... $ac_c" 1>&6
-echo "configure:4789: checking for Fortran COMPLEX*8" >&5
+echo "configure:4880: checking for Fortran COMPLEX*8" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_complex8'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4801,7 +4892,7 @@ cat > conftest.$ac_ext <<EOF
       COMPLEX*8 a
       end
 EOF
-if { (eval echo configure:4805: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4896: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_complex8=yes
 else
@@ -4830,7 +4921,7 @@ EOF
 fi
 
 echo $ac_n "checking for Fortran COMPLEX*16""... $ac_c" 1>&6
-echo "configure:4834: checking for Fortran COMPLEX*16" >&5
+echo "configure:4925: checking for Fortran COMPLEX*16" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_complex16'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4846,7 +4937,7 @@ cat > conftest.$ac_ext <<EOF
       COMPLEX*16 a
       end
 EOF
-if { (eval echo configure:4850: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4941: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_complex16=yes
 else
@@ -4875,7 +4966,7 @@ EOF
 fi
 
 echo $ac_n "checking for Fortran COMPLEX*32""... $ac_c" 1>&6
-echo "configure:4879: checking for Fortran COMPLEX*32" >&5
+echo "configure:4970: checking for Fortran COMPLEX*32" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_fortran_complex32'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4891,7 +4982,7 @@ cat > conftest.$ac_ext <<EOF
       COMPLEX*32 a
       end
 EOF
-if { (eval echo configure:4895: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4986: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cctk_cv_have_fortran_complex32=yes
 else
@@ -4922,12 +5013,12 @@ fi
 
 ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext `CCTK_Wrap "$LIBDIR_PREFIX" "$LIBDIR_SUFFIX" "$LIBDIRS"` `CCTK_Wrap "$LIBLINK_PREFIX" "$LIBLINK_SUFFIX" "$LIBS"` >&5'
 echo $ac_n "checking for crypt""... $ac_c" 1>&6
-echo "configure:4926: checking for crypt" >&5
+echo "configure:5017: checking for crypt" >&5
 if eval "test \"`echo '$''{'ac_cv_func_crypt'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4931 "configure"
+#line 5022 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char crypt(); below.  */
@@ -4950,7 +5041,7 @@ crypt();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4954: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5045: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_crypt=yes"
 else
@@ -4968,7 +5059,7 @@ if eval "test \"`echo '$ac_cv_func_'crypt`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for crypt in library crypt""... $ac_c" 1>&6
-echo "configure:4972: checking for crypt in library crypt" >&5
+echo "configure:5063: checking for crypt in library crypt" >&5
 ac_lib_var=`echo crypt'_'crypt | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4977,7 +5068,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="crypt  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4981 "configure"
+#line 5072 "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
@@ -4988,7 +5079,7 @@ int main() {
 crypt()
 ; return 0; }
 EOF
-if { (eval echo configure:4992: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5083: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5029,12 +5120,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in finite
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:5033: checking for $ac_func" >&5
+echo "configure:5124: 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 5038 "configure"
+#line 5129 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -5057,7 +5148,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5061: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5152: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -5079,7 +5170,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for finite in library m""... $ac_c" 1>&6
-echo "configure:5083: checking for finite in library m" >&5
+echo "configure:5174: checking for finite in library m" >&5
 ac_lib_var=`echo m'_'finite | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5088,7 +5179,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5092 "configure"
+#line 5183 "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
@@ -5099,7 +5190,7 @@ int main() {
 finite()
 ; return 0; }
 EOF
-if { (eval echo configure:5103: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5194: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5141,12 +5232,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in isnan
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:5145: checking for $ac_func" >&5
+echo "configure:5236: 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 5150 "configure"
+#line 5241 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -5169,7 +5260,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5173: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5264: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -5191,7 +5282,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for isnan in library m""... $ac_c" 1>&6
-echo "configure:5195: checking for isnan in library m" >&5
+echo "configure:5286: checking for isnan in library m" >&5
 ac_lib_var=`echo m'_'isnan | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5200,7 +5291,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5204 "configure"
+#line 5295 "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
@@ -5211,7 +5302,7 @@ int main() {
 isnan()
 ; return 0; }
 EOF
-if { (eval echo configure:5215: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5306: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5253,12 +5344,12 @@ ac_link='${CC-cc} -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_
 for ac_func in isinf
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:5257: checking for $ac_func" >&5
+echo "configure:5348: 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 5262 "configure"
+#line 5353 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -5281,7 +5372,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5285: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5376: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -5303,7 +5394,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for isinf in library m""... $ac_c" 1>&6
-echo "configure:5307: checking for isinf in library m" >&5
+echo "configure:5398: checking for isinf in library m" >&5
 ac_lib_var=`echo m'_'isinf | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5312,7 +5403,7 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="m  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5316 "configure"
+#line 5407 "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
@@ -5323,7 +5414,7 @@ int main() {
 isinf()
 ; return 0; }
 EOF
-if { (eval echo configure:5327: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5418: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5365,12 +5456,12 @@ ac_link='${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:5369: checking for $ac_func" >&5
+echo "configure:5460: 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 5374 "configure"
+#line 5465 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -5393,7 +5484,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5397: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5488: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -5415,7 +5506,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for mkstemp in library c""... $ac_c" 1>&6
-echo "configure:5419: checking for mkstemp in library c" >&5
+echo "configure:5510: checking for mkstemp in library c" >&5
 ac_lib_var=`echo c'_'mkstemp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5424,18 +5515,18 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="c  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5428 "configure"
+#line 5519 "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 MsafWo;
+char fRQzfT;
 
 int main() {
-oGzJcf
+pSqC0Q
 ; return 0; }
 EOF
-if { (eval echo configure:5439: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5530: \"$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
@@ -5474,19 +5565,19 @@ done
 
 
 echo $ac_n "checking for va_copy""... $ac_c" 1>&6
-echo "configure:5478: checking for va_copy" >&5
+echo "configure:5569: checking for va_copy" >&5
 if eval "test \"`echo '$''{'cctk_cv_have_va_copy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5483 "configure"
+#line 5574 "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:5490: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5581: \"$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
@@ -5525,7 +5616,7 @@ if test "$PTHREADS_MODE" = 'yes'; then
   if test -z "$PTHREAD_LIBS"; then
     PTHREAD_LIBS=
     echo $ac_n "checking for main in library c_r""... $ac_c" 1>&6
-echo "configure:5529: checking for main in library c_r" >&5
+echo "configure:5620: checking for main in library c_r" >&5
 ac_lib_var=`echo c_r'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5534,14 +5625,14 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="c_r  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5538 "configure"
+#line 5629 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:5545: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5636: \"$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
@@ -5562,7 +5653,7 @@ else
 fi
 
     echo $ac_n "checking for main in library pthread""... $ac_c" 1>&6
-echo "configure:5566: checking for main in library pthread" >&5
+echo "configure:5657: checking for main in library pthread" >&5
 ac_lib_var=`echo pthread'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5571,14 +5662,14 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="pthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5575 "configure"
+#line 5666 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:5582: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5673: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5597,7 +5688,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for main in library pthreads""... $ac_c" 1>&6
-echo "configure:5601: checking for main in library pthreads" >&5
+echo "configure:5692: checking for main in library pthreads" >&5
 ac_lib_var=`echo pthreads'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5606,14 +5697,14 @@ else
 ac_save_LIBS="$LIBS"
 LIBS="pthreads  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5610 "configure"
+#line 5701 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:5617: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5708: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6080,7 +6171,7 @@ if test "x$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:6084: checking for X" >&5
+echo "configure:6175: checking for X" >&5
 
 # Check whether --with-x or --without-x was given.
 if test "${with_x+set}" = set; then
@@ -6142,12 +6233,12 @@ if test "$ac_x_includes" = NO; then
 
   # First, try using that file with no special directory specified.
 cat > conftest.$ac_ext <<EOF
-#line 6146 "configure"
+#line 6237 "configure"
 #include "confdefs.h"
 #include <$x_direct_test_include>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6151: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6242: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -6216,14 +6307,14 @@ if test "$ac_x_libraries" = NO; then
   ac_save_LIBS="$LIBS"
   LIBS="-l$x_direct_test_library $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6220 "configure"
+#line 6311 "configure"
 #include "confdefs.h"
 
 int main() {
 ${x_direct_test_function}()
 ; return 0; }
 EOF
-if { (eval echo configure:6227: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6318: \"$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 8b1f4cce..4152e7b6 100644
--- a/lib/make/configure.in
+++ b/lib/make/configure.in
@@ -781,11 +781,11 @@ CCTK_C__PRAGMA
 #CCTK_C_ATTRIBUTE_PURE
 #CCTK_CXX_ATTRIBUTE_PURE
 #CCTK_CXX_MEMBER_ATTRIBUTE_PURE
-#
-## Find out whether the C compiler supports __attribute__((unused))
-#CCTK_C_ATTRIBUTE_UNUSED
-#CCTK_CXX_ATTRIBUTE_UNUSED
-#
+
+# Find out whether the C compiler supports __attribute__((unused))
+CCTK_C_ATTRIBUTE_UNUSED
+CCTK_CXX_ATTRIBUTE_UNUSED
+
 ## Find out whether the C compiler supports __attribute__((cold))
 #CCTK_C_ATTRIBUTE_COLD
 #CCTK_CXX_ATTRIBUTE_COLD
-- 
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