svn commit: samba r12836 - in branches/SAMBA_4_0/source: . build/m4
metze at samba.org
metze at samba.org
Wed Jan 11 00:56:50 GMT 2006
Author: metze
Date: 2006-01-11 00:56:49 +0000 (Wed, 11 Jan 2006)
New Revision: 12836
WebSVN: http://websvn.samba.org/cgi-bin/viewcvs.cgi?view=rev&root=samba&rev=12836
Log:
use: -fvisibility=hidden -D_PUBLIC_="__attribute__((visibility(\"default\")))"
if the compiler supports it, this will cause that modules can only access
public functions (gcc 4 supports this)
metze
Modified:
branches/SAMBA_4_0/source/build/m4/check_cc.m4
branches/SAMBA_4_0/source/configure.in
Changeset:
Modified: branches/SAMBA_4_0/source/build/m4/check_cc.m4
===================================================================
--- branches/SAMBA_4_0/source/build/m4/check_cc.m4 2006-01-10 22:22:55 UTC (rev 12835)
+++ branches/SAMBA_4_0/source/build/m4/check_cc.m4 2006-01-11 00:56:49 UTC (rev 12836)
@@ -117,6 +117,25 @@
AC_MSG_WARN([cannot run when cross-compiling]))
#
+# Check if the compiler support ELF visibility for symbols
+#
+if test x"$GCC" = x"yes" ; then
+ AX_CFLAGS_GCC_OPTION([-fvisibility=hidden], VISIBILITY_CFLAGS)
+fi
+if test -n "$VISIBILITY_CFLAGS"; then
+ OLD_CFLAGS="${CFLAGS}"
+ CFLAGS="${CFLAGS} ${VISIBILITY_CFLAGS} -D_PUBLIC_=__attribute__((visibility(\"default\")))"
+ VISIBILITY_CFLAGS="${VISIBILITY_CFLAGS} -D_PUBLIC_=\"__attribute__((visibility(\\\"default\\\")))\""
+ AC_MSG_CHECKING([that the C compiler can use the VISIBILITY_CFLAGS])
+ AC_TRY_RUN([
+ _PUBLIC_ void vis_foo1(void) {}
+ __attribute__((visibility("default"))) void vis_foo2(void) {}
+ #include "${srcdir-.}/build/tests/trivial.c"
+ ], AC_MSG_RESULT(yes), [AC_MSG_RESULT(no);VISIBILITY_CFLAGS=""])
+ CFLAGS="${OLD_CFLAGS}"
+fi
+
+#
# Check if the compiler can handle the options we selected by
# --enable-*developer
#
Modified: branches/SAMBA_4_0/source/configure.in
===================================================================
--- branches/SAMBA_4_0/source/configure.in 2006-01-10 22:22:55 UTC (rev 12835)
+++ branches/SAMBA_4_0/source/configure.in 2006-01-11 00:56:49 UTC (rev 12836)
@@ -53,8 +53,8 @@
fi
#################################################
-# add DEVELOPER_CFLAGS only for the real build
-CFLAGS="${CFLAGS} ${DEVELOPER_CFLAGS}"
+# add *_CFLAGS only for the real build
+CFLAGS="${CFLAGS} ${VISIBILITY_CFLAGS} ${DEVELOPER_CFLAGS}"
#################################################
# final configure stuff
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