Mercurial > hg > sv-dependency-builds
view src/fftw-3.3.3/m4/ax_gcc_version.m4 @ 169:223a55898ab9 tip default
Add null config files
| author | Chris Cannam <cannam@all-day-breakfast.com> |
|---|---|
| date | Mon, 02 Mar 2020 14:03:47 +0000 |
| parents | 89f5e221ed7b |
| children |
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dnl @synopsis AX_GCC_VERSION(MAJOR, MINOR, PATCHLEVEL, [ACTION-SUCCESS], [ACTION-FAILURE]) dnl @summary check wither gcc is at least version MAJOR.MINOR.PATCHLEVEL dnl @category InstalledPackages dnl dnl Check whether we are using gcc and, if so, whether its version dnl is at least MAJOR.MINOR.PATCHLEVEL 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_GCC_VERSION], [ AC_REQUIRE([AC_PROG_CC]) AC_CACHE_CHECK(whether we are using gcc $1.$2.$3 or later, ax_cv_gcc_$1_$2_$3, [ ax_cv_gcc_$1_$2_$3=no if test "$GCC" = "yes"; then dnl The semicolon after "yes" below is to pacify NeXT's syntax-checking cpp. AC_EGREP_CPP(yes, [ #ifdef __GNUC__ # if (__GNUC__ > $1) || (__GNUC__ == $1 && __GNUC_MINOR__ > $2) \ || (__GNUC__ == $1 && __GNUC_MINOR__ == $2 && __GNUC_PATCHLEVEL__ >= $3) yes; # endif #endif ], [ax_cv_gcc_$1_$2_$3=yes]) fi ]) if test "$ax_cv_gcc_$1_$2_$3" = yes; then m4_default([$4], :) else m4_default([$5], :) fi ])