Mercurial > hg > sv-dependency-builds
diff src/fftw-3.3.5/m4/ax_gcc_version.m4 @ 42:2cd0e3b3e1fd
Current fftw source
| author | Chris Cannam |
|---|---|
| date | Tue, 18 Oct 2016 13:40:26 +0100 |
| parents | |
| children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/fftw-3.3.5/m4/ax_gcc_version.m4 Tue Oct 18 13:40:26 2016 +0100 @@ -0,0 +1,38 @@ +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 +]) +