diff options
| author | Dan McGee <dan@archlinux.org> | 2007-10-31 22:19:03 -0500 |
|---|---|---|
| committer | Dan McGee <dan@archlinux.org> | 2007-11-04 10:42:07 -0600 |
| commit | c26fe63ee5d84492bcfb36664af8a90619e6ded5 (patch) | |
| tree | 591814b7bf5a0cc483f56968797e0c64556a81e7 | |
| parent | 8feccaed7861010caefa4f7b9824a612a78e3043 (diff) | |
Add some more autoconf macros to filter our CFLAGS usage
Hopefully these new autoconf macros, with a little magic, will allow us to
compile with any compiler and still choose the options we have available
to us.
Tested locally with gcc 4.2.2 and gcc 3.4.6; the latter doesn't support two
of the items we previously had hardcoded in our CFLAGS.
Signed-off-by: Dan McGee <dan@archlinux.org>
| -rw-r--r-- | acinclude.m4 | 41 | ||||
| -rw-r--r-- | configure.ac | 5 | ||||
| -rw-r--r-- | lib/libalpm/Makefile.am | 9 |
3 files changed, 54 insertions, 1 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 +]) + diff --git a/configure.ac b/configure.ac index d93cea84..823d4691 100644 --- a/configure.ac +++ b/configure.ac @@ -162,6 +162,11 @@ AC_CHECK_FUNCS([realpath regcomp strcasecmp strdup strerror strnlen \ # Enable large file support if available AC_SYS_LARGEFILE +# Check if we can use symbol visibility support in GCC +GCC_VISIBILITY_CC +# Check if we have -fgnu89-inline flag +GCC_GNU89_INLINE_CC + # Host-dependant flags case "${host}" in *-*-cygwin*) diff --git a/lib/libalpm/Makefile.am b/lib/libalpm/Makefile.am index e42a0bd0..b84dcc33 100644 --- a/lib/libalpm/Makefile.am +++ b/lib/libalpm/Makefile.am @@ -7,7 +7,14 @@ include_HEADERS = alpm_list.h alpm.h DEFS = -DLOCALEDIR=\"@localedir@\" @DEFS@ -AM_CFLAGS = -fvisibility=internal -pedantic -D_GNU_SOURCE -fgnu89-inline +AM_CFLAGS = -pedantic -D_GNU_SOURCE + +if ENABLE_VISIBILITY_CC +AM_CFLAGS += -fvisibility=internal +endif +if ENABLE_GNU89_INLINE_CC +AM_CFLAGS += -fgnu89-inline +endif libalpm_la_SOURCES = \ add.h add.c \ |