diff options
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index 566953df..b9a77cd4 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -6623,3 +6623,44 @@ AC_DEFUN([GCC_STACK_PROTECT_CC],[ fi fi ]) + +dnl GCC_VISIBILITY_CC +dnl checks -fvisibility=internal with the C compiler, if it exists then +dnl defines ENABLE_VISIBILITY_CC in both configure script and Makefiles +AC_DEFUN([GCC_VISIBILITY_CC],[ + AC_LANG_ASSERT(C) + if test "X$CC" != "X"; then + AC_CACHE_CHECK([whether ${CC} accepts -fvisibility=internal], + visibility_cv_cc, + [visibility_old_cflags="$CFLAGS" + CFLAGS="$CFLAGS -fvisibility=internal" + AC_TRY_COMPILE(,, visibility_cv_cc=yes, visibility_cv_cc=no) + CFLAGS="$visibility_old_cflags" + ]) + if test $visibility_cv_cc = yes; then + AC_DEFINE([ENABLE_VISIBILITY_CC], 1, [Define if symbol visibility C support is enabled.]) + fi + AM_CONDITIONAL([ENABLE_VISIBILITY_CC], test "x$visibility_cv_cc" = "xyes") + fi +]) + +dnl GCC_GNU89_INLINE_CC +dnl checks -fgnu89-inline with the C compiler, if it exists then defines +dnl ENABLE_GNU89_INLINE_CC in both configure script and Makefiles +AC_DEFUN([GCC_GNU89_INLINE_CC],[ + AC_LANG_ASSERT(C) + if test "X$CC" != "X"; then + AC_CACHE_CHECK([for -fgnu89-inline], + gnu89_inline_cv_cc, + [ gnu89_inline_old_cflags="$CFLAGS" + CFLAGS="$CFLAGS -fgnu89-inline" + AC_TRY_COMPILE(,, gnu89_inline_cv_cc=yes, gnu89_inline_cv_cc=no) + CFLAGS="$gnu89_inline_old_cflags" + ]) + if test $gnu89_inline_cv_cc = yes; then + AC_DEFINE([ENABLE_GNU89_INLINE_CC], 1, [Define if gnu89 inlining semantics should be used.]) + fi + AM_CONDITIONAL([ENABLE_GNU89_INLINE_CC], test "x$gnu89_inline_cv_cc" = "xyes") + fi +]) + |