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author | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-08-03 17:31:48 +0200 |
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committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-10-11 15:15:02 +0200 |
commit | 00c179b4c9f9f9394cc6f79e5f2a68410631fd72 (patch) | |
tree | 00057636d125f3c89e2b9485c67c4283a98d91b2 /m4/gcc4_visibility.m4 |
initial version of libnftables
It adds support for table, chain and rule handling.
This also includes expression handling for each rule.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'm4/gcc4_visibility.m4')
-rw-r--r-- | m4/gcc4_visibility.m4 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/m4/gcc4_visibility.m4 b/m4/gcc4_visibility.m4 new file mode 100644 index 0000000..214d3f3 --- /dev/null +++ b/m4/gcc4_visibility.m4 @@ -0,0 +1,21 @@ + +# GCC 4.x -fvisibility=hidden + +AC_DEFUN([CHECK_GCC_FVISIBILITY], [ + AC_LANG_PUSH([C]) + saved_CFLAGS="$CFLAGS" + CFLAGS="$saved_CFLAGS -fvisibility=hidden" + AC_CACHE_CHECK([whether compiler accepts -fvisibility=hidden], + [ac_cv_fvisibility_hidden], AC_COMPILE_IFELSE( + [AC_LANG_SOURCE()], + [ac_cv_fvisibility_hidden=yes], + [ac_cv_fvisibility_hidden=no] + )) + if test "$ac_cv_fvisibility_hidden" = "yes"; then + AC_DEFINE([HAVE_VISIBILITY_HIDDEN], [1], + [True if compiler supports -fvisibility=hidden]) + AC_SUBST([GCC_FVISIBILITY_HIDDEN], [-fvisibility=hidden]) + fi + CFLAGS="$saved_CFLAGS" + AC_LANG_POP([C]) +]) |