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dnl /*@@
dnl @file aclocal.m4
dnl @date Thu Oct 21 00:05:58 1999
dnl @author Tom Goodale
dnl @desc
dnl Local Cactus macros
dnl @enddesc
dnl @version $Header$
dnl @@*/
dnl These are copies of the standard autoconf macros, except they
dnl use AC_TRY_COMPILE rather than AC_TRY_CPP to check for headers.
dnl This gets round the problem on cygwin where the gnu cpp finds
dnl the gcc headers and not the ones for the actual compiler.
dnl CCTK_CHECK_HEADER(HEADER-FILE, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
AC_DEFUN(CCTK_CHECK_HEADER,
[dnl Do the transliteration at runtime so arg 1 can be a shell variable.
cctk_safe=`echo "$1" | sed 'y%./+-%__p_%'`
AC_MSG_CHECKING([for $1])
AC_CACHE_VAL(cctk_cv_header_$cctk_safe,
[AC_TRY_COMPILE([#include <$1>], [return 0;], eval "cctk_cv_header_$cctk_safe=yes",
eval "cctk_cv_header_$cctk_safe=no")])dnl
if eval "test \"`echo '$cctk_cv_header_'$cctk_safe`\" = yes"; then
AC_MSG_RESULT(yes)
ifelse([$2], , :, [$2])
else
AC_MSG_RESULT(no)
ifelse([$3], , , [$3
])dnl
fi
])
dnl CCTK_CHECK_HEADERS(HEADER-FILE... [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
AC_DEFUN(CCTK_CHECK_HEADERS,
[for cctk_hdr in $1
do
CCTK_CHECK_HEADER($cctk_hdr,
[changequote(, )dnl
cctk_tr_hdr=HAVE_`echo $cctk_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
changequote([, ])dnl
AC_DEFINE_UNQUOTED($cctk_tr_hdr) $2], $3)dnl
done
])
dnl CCTK_FIND_NULLDEVICE
dnl Have to do it in this rather bizarre way
dnl as cygwin emulates /dev/null
AC_DEFUN(CCTK_FIND_NULLDEVICE,
[AC_MSG_CHECKING([for the null device])
AC_CACHE_VAL(cctk_cv_nulldevice,
[
if test -d /dev ; then
eval "cctk_cv_nulldevice=/dev/null"
else
cat > NUL <<EOF
test
EOF
if `cat NUL > /dev/null 2>/dev/null` ; then
eval "cctk_cv_nulldevice=NUL"
fi
fi
])
if eval "test -n \"$cctk_cv_nulldevice\"" ; then
AC_MSG_RESULT($NULL_DEVICE)
AC_DEFINE_UNQUOTED(NULL_DEVICE, "$cctk_cv_nulldevice")
else
AC_MSG_RESULT("not found")
fi
])
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