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| author | Joseph Myers <joseph@codesourcery.com> | 2012-03-21 16:33:57 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2012-03-21 16:33:57 +0000 |
| commit | 40b601fbb774cd2be2f6cbe7155570340fc475a2 (patch) | |
| tree | 79ec38289fe7e9a56059c8c69e8b212eb218e3f0 /aclocal.m4 | |
| parent | 1a4ac776ebc9bb07287f59f63e473db531318dff (diff) | |
Use autoconf macro for testing compiler options with empty input.
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index fb546e46c1..e89993237f 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -128,6 +128,12 @@ AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest [$2], [$3]) rm -f conftest*]) +dnl Test a compiler option or options with an empty input file. +dnl LIBC_TRY_CC_OPTION([options], [action-if-true], [action-if-false]) +AC_DEFUN([LIBC_TRY_CC_OPTION], +[AS_IF([AC_TRY_COMMAND([${CC-cc} $1 -xc /dev/null -S -o /dev/null])], + [$2], [$3])]) + dnl Find and source sysdeps/*/preconfigure. dnl LIBC_PRECONFIGURE([$srcdir], [for]) AC_DEFUN([LIBC_PRECONFIGURE], [dnl |