1dnl Usage: TL_AC_GCC_VERSION(TOPSRCDIR) 2dnl 3dnl Set up the variables: 4dnl 5dnl gcc_version_trigger: pathname of gcc's version.c, if available 6dnl gcc_version_full: full gcc version string 7dnl gcc_version: the first "word" in $gcc_version_full 8dnl 9dnl TOPSRCDIR is the top-level source directory. 10AC_DEFUN([TL_AC_GCC_VERSION], 11[ 12changequote(,)dnl 13if test "${with_gcc_version_trigger+set}" = set; then 14 gcc_version_trigger=$with_gcc_version_trigger 15else 16 gcc_version_trigger=$1/gcc/version.c 17fi 18if test -f "${gcc_version_trigger}"; then 19 gcc_version_full=`grep version_string "${gcc_version_trigger}" | sed -e 's/.*"\([^"]*\)".*/\1/'` 20else 21 gcc_version_full=`$CC -v 2>&1 | sed -n 's/^gcc version //p'` 22fi 23gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'` 24changequote([,])dnl 25AC_SUBST(gcc_version_trigger) 26AC_SUBST(gcc_version_full) 27AC_SUBST(gcc_version) 28])dnl 29