comparison src/fftw-3.3.8/m4/ax_gcc_version.m4 @ 167:bd3cc4d1df30

Add FFTW 3.3.8 source, and a Linux build

+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 <[e-mail]> 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
+])
+