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Introduce and use config/gcc-version.m4.

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This commit is contained in:
Richard Sandiford
2004-12-02 11:09:36 +00:00
parent f77390bbdb
commit afdaeaab51
5 changed files with 138 additions and 99 deletions
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4
config/ChangeLog
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@ -1,3 +1,7 @@
2004-12-02 Richard Sandiford <rsandifo@redhat.com>
* gcc-version.m4: New file.
2004-09-24 Zack Weinberg <zack@codesourcery.com>
* warnings.m4: New file.

28
config/gcc-version.m4 Normal file
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@ -0,0 +1,28 @@
dnl Usage: TL_AC_GCC_VERSION(TOPSRCDIR)
dnl
dnl Set up the variables:
dnl
dnl gcc_version_trigger: pathname of gcc's version.c, if available
dnl gcc_version_full: full gcc version string
dnl gcc_version: the first "word" in $gcc_version_full
dnl
dnl TOPSRCDIR is the top-level source directory.
AC_DEFUN([TL_AC_GCC_VERSION],
[
changequote(,)dnl
if test "${with_gcc_version_trigger+set}" = set; then
gcc_version_trigger=$with_gcc_version_trigger
else
gcc_version_trigger=$1/gcc/version.c
fi
if test -f "${gcc_version_trigger}"; then
gcc_version_full=`grep version_string "${gcc_version_trigger}" | sed -e 's/.*"\([^"]*\)".*/\1/'`
else
gcc_version_full=`$CC -v 2>&1 | sed -n 's/^gcc version //p'`
fi
gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
changequote([,])dnl
AC_SUBST(gcc_version_trigger)
AC_SUBST(gcc_version_full)
AC_SUBST(gcc_version)
])dnl