Attempt #2 to fix mingw crossbuild. This time with more ugly hacks!

[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 ee3d61bc82d2f26f7db6ca47f090c67d3055484e..65dd503e203fc8713eecb58739c5c928623981ae 100644 (file)
--- a/autoconf/m4/visibility_inlines_hidden.m4
+++ b/autoconf/m4/visibility_inlines_hidden.m4
@@ -8,9 +8,9 @@ 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"
+  CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden -Werror"
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
-    [template <typename T> struct X { inline void f() {} };],
+    [template <typename T> struct X { void __attribute__((noinline)) f() {} };],
     [X<int>().f();])],
     [llvm_cv_cxx_visibility_inlines_hidden=yes],[llvm_cv_cxx_visibility_inlines_hidden=no])
   CXXFLAGS="$oldcxxflags"