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authorLuboš Luňák <l.lunak@suse.cz>2012-03-10 15:55:51 +0100
committerLuboš Luňák <l.lunak@suse.cz>2012-03-10 16:39:23 +0100
commit305cfc116ef2e7dd8630b8353c48b04c5316492c (patch)
tree4e301a8727d58e5972ca3c065f233ff0dbb74dfc
parent91fc0f37c1e06ba2875f3f4ed1b02ac6e92aafcb (diff)
clang has broken -fvisibility-inlines-hidden
http://llvm.org/bugs/show_bug.cgi?id=11250 , comment #4
-rw-r--r--configure.in29
1 files changed, 29 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index d9f8741a76f3..33109cac11ff 100644
--- a/configure.in
+++ b/configure.in
@@ -4482,6 +4482,35 @@ istringstream strm( "test" ); return 0;
LDFLAGS=$sharedlink_ldflags_save
fi
+ if test "$HAVE_GCC_VISIBILITY_FEATURE" = "TRUE" -a "$HAVE_GCC_VISIBILITY_BROKEN" != "TRUE"; then
+ AC_MSG_CHECKING([if gcc is -fvisibility-inlines-hidden safe (Clang bug 11250)])
+ cat > conftestlib1.cc <<_ACEOF
+template<typename T> struct S1 { virtual ~S1() {} virtual void f() {} };
+struct S2: S1<int> { virtual ~S2(); };
+S2::~S2() {}
+_ACEOF
+ cat > conftestlib2.cc <<_ACEOF
+template<typename T> struct S1 { virtual ~S1() {} virtual void f() {} };
+struct S2: S1<int> { virtual ~S2(); };
+struct S3: S2 { virtual ~S3(); }; S3::~S3() {}
+_ACEOF
+ gccvisinlineshiddenok=yes
+ if ! $CXX $CXXFLAGS $CPPFLAGS -shared -fPIC -fvisibility-inlines-hidden conftestlib1.cc -o lib1.so >/dev/null 2>/dev/null; then
+ gccvisinlineshiddenok=no
+ else
+ if ! $CXX $CXXFLAGS $CPPFLAGS -shared -fPIC -fvisibility-inlines-hidden conftestlib2.cc -L. -l1 -Wl,-z,defs -o lib2.so >/dev/null 2>/dev/null ; then
+ gccvisinlineshiddenok=no
+ fi
+ fi
+
+ AC_MSG_RESULT([$gccvisinlineshiddenok])
+ if test "$gccvisinlineshiddenok" = "no"; then
+ AC_MSG_WARN([Your gcc/clang is not -fvisibility-inlines-hidden safe, disabling that.])
+ echo "Your gcc/clang is not -fvisibility-inlines-hidden safe, disabling that." >> warn
+ HAVE_GCC_VISIBILITY_BROKEN="TRUE"
+ fi
+ fi
+
if test "$HAVE_GCC_VISIBILITY_FEATURE" = "TRUE"; then
AC_MSG_CHECKING([if gcc has a visibility bug with class-level attributes (GCC bug 26905)])
cat >visibility.cxx <<_ACEOF