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| author | Jan Engelhardt <jengelh@medozas.de> | 2010-11-19 13:07:48 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2010-11-19 13:07:48 +0100 |
| commit | fe73d7d8854efda86d4d09757874c48352e6b247 (patch) | |
| tree | 64104b409f7a50ae3c434034bf3c956f8b5d88a7 /m4/visibility.m4 | |
| parent | 68dd5828052a965a7c8e84d0b8c9d4996ff3f410 (diff) | |
| download | libmnl-fe73d7d8854efda86d4d09757874c48352e6b247.tar.gz libmnl-fe73d7d8854efda86d4d09757874c48352e6b247.zip | |
build: tag function headers rather than decls as exported
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'm4/visibility.m4')
| -rw-r--r-- | m4/visibility.m4 | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/m4/visibility.m4 b/m4/visibility.m4 deleted file mode 100644 index 2ff6330..0000000 --- a/m4/visibility.m4 +++ /dev/null @@ -1,52 +0,0 @@ -# visibility.m4 serial 1 (gettext-0.15) -dnl Copyright (C) 2005 Free Software Foundation, Inc. -dnl This file is free software; the Free Software Foundation -dnl gives unlimited permission to copy and/or distribute it, -dnl with or without modifications, as long as this notice is preserved. - -dnl From Bruno Haible. - -dnl Tests whether the compiler supports the command-line option -dnl -fvisibility=hidden and the function and variable attributes -dnl __attribute__((__visibility__("hidden"))) and -dnl __attribute__((__visibility__("default"))). -dnl Does *not* test for __visibility__("protected") - which has tricky -dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on -dnl MacOS X. -dnl Does *not* test for __visibility__("internal") - which has processor -dnl dependent semantics. -dnl Does *not* test for #pragma GCC visibility push(hidden) - which is -dnl "really only recommended for legacy code". -dnl Set the variable CFLAG_VISIBILITY. -dnl Defines and sets the variable HAVE_VISIBILITY. - -AC_DEFUN([gl_VISIBILITY], -[ - AC_REQUIRE([AC_PROG_CC]) - CFLAG_VISIBILITY= - HAVE_VISIBILITY=0 - if test -n "$GCC"; then - AC_MSG_CHECKING([for simple visibility declarations]) - AC_CACHE_VAL(gl_cv_cc_visibility, [ - gl_save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -fvisibility=hidden" - AC_TRY_COMPILE( - [extern __attribute__((__visibility__("hidden"))) int hiddenvar; - extern __attribute__((__visibility__("default"))) int exportedvar; - extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void); - extern __attribute__((__visibility__("default"))) int exportedfunc (void);], - [], - gl_cv_cc_visibility=yes, - gl_cv_cc_visibility=no) - CFLAGS="$gl_save_CFLAGS"]) - AC_MSG_RESULT([$gl_cv_cc_visibility]) - if test $gl_cv_cc_visibility = yes; then - CFLAG_VISIBILITY="-fvisibility=hidden" - HAVE_VISIBILITY=1 - fi - fi - AC_SUBST([CFLAG_VISIBILITY]) - AC_SUBST([HAVE_VISIBILITY]) - AC_DEFINE_UNQUOTED([HAVE_VISIBILITY], [$HAVE_VISIBILITY], - [Define to 1 or 0, depending whether the compiler supports simple visibility declarations.]) -]) |