[cmake] rework LLVM_LINK_LLVM_DYLIB option handling

[oota-llvm.git] / autoconf / m4 / visibility_inlines_hidden.m4

diff --git a/autoconf/m4/visibility_inlines_hidden.m4 b/autoconf/m4/visibility_inlines_hidden.m4
index 42ddbe9128b386688707b153e9de24ef4d2f9a01..b1cc42aa5f535a63658ca9b00363c3aebc1947a4 100644 (file)
--- a/autoconf/m4/visibility_inlines_hidden.m4
+++ b/autoconf/m4/visibility_inlines_hidden.m4
@@ -8,8 +8,10 @@ AC_DEFUN([AC_CXX_USE_VISIBILITY_INLINES_HIDDEN],
                 [llvm_cv_cxx_visibility_inlines_hidden],
 [ AC_LANG_PUSH([C++])
   oldcxxflags="$CXXFLAGS"
-  CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+  CXXFLAGS="$CXXFLAGS -O0 -fvisibility-inlines-hidden -Werror"
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+    [template <typename T> struct X { void __attribute__((noinline)) f() {} };],
+    [X<int>().f();])],
     [llvm_cv_cxx_visibility_inlines_hidden=yes],[llvm_cv_cxx_visibility_inlines_hidden=no])
   CXXFLAGS="$oldcxxflags"
   AC_LANG_POP([C++])