Mercurial > hg > sv-dependency-builds
diff src/fftw-3.3.3/m4/ax_check_compiler_flags.m4 @ 10:37bf6b4a2645
Add FFTW3
| author | Chris Cannam |
|---|---|
| date | Wed, 20 Mar 2013 15:35:50 +0000 |
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| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/fftw-3.3.3/m4/ax_check_compiler_flags.m4 Wed Mar 20 15:35:50 2013 +0000 @@ -0,0 +1,40 @@ +dnl @synopsis AX_CHECK_COMPILER_FLAGS(FLAGS, [ACTION-SUCCESS], [ACTION-FAILURE]) +dnl @summary check whether FLAGS are accepted by the compiler +dnl @category Misc +dnl +dnl Check whether the given compiler FLAGS work with the current language's +dnl compiler, or whether they give an error. (Warnings, however, are +dnl ignored.) +dnl +dnl ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on +dnl success/failure. +dnl +dnl @version 2005-05-30 +dnl @license GPLWithACException +dnl @author Steven G. Johnson <stevenj@alum.mit.edu> and Matteo Frigo. +AC_DEFUN([AX_CHECK_COMPILER_FLAGS], +[AC_PREREQ(2.59) dnl for _AC_LANG_PREFIX +AC_MSG_CHECKING([whether _AC_LANG compiler accepts $1]) +dnl Some hackery here since AC_CACHE_VAL can't handle a non-literal varname: +AS_LITERAL_IF([$1], + [AC_CACHE_VAL(AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1), [ + ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS + _AC_LANG_PREFIX[]FLAGS="$1" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], + AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=yes, + AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=no) + _AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS])], + [ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS + _AC_LANG_PREFIX[]FLAGS="$1" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], + eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=yes, + eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=no) + _AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS]) +eval ax_check_compiler_flags=$AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1) +AC_MSG_RESULT($ax_check_compiler_flags) +if test "x$ax_check_compiler_flags" = xyes; then + m4_default([$2], :) +else + m4_default([$3], :) +fi +])dnl AX_CHECK_COMPILER_FLAGS