config/gcc-version.m4

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