diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/configure.ac b/configure.ac index eabc81a2909b..c460f735590c 100644 --- a/configure.ac +++ b/configure.ac @@ -5775,42 +5775,6 @@ AC_SUBST(HAVE_GCC_VISIBILITY_FEATURE) AC_SUBST(HAVE_GCC_VISIBILITY_BROKEN) dnl =================================================================== -dnl SFINAE test -dnl Pre-C++11 does not allow types without linkage as template arguments. -dnl Substitution Failure Is Not An Error is an idiom that disables -dnl template instances that would cause an error, without actually -dnl causing an error. Old gcc (pre-4.0.2) however causes a real error. -dnl http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21514 -dnl =================================================================== -HAVE_SFINAE_ANONYMOUS_BROKEN= -if test \( "$_os" != "WINNT" -o "$WITH_MINGW" = "yes" \); then - - AC_LANG_PUSH([C++]) - AC_MSG_CHECKING([if SFINAE is broken with anonymous types]) - AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ -enum { AnonymousEnumValue }; -template< typename T > class TestPredicate {}; -template<> class TestPredicate< int > { public: typedef bool Type; }; -template< typename T > -bool test( const T&, typename TestPredicate< T >::Type = false ) - { return true; }; -void test( ... ); - ]], [[ - test( 10 ); - test( AnonymousEnumValue ); - ]])],[sfinae_anonymous_broken=no],[sfinae_anonymous_broken=yes - ]) - AC_MSG_RESULT([$sfinae_anonymous_broken]) - if test "$sfinae_anonymous_broken" = "yes"; then - HAVE_SFINAE_ANONYMOUS_BROKEN="TRUE" - AC_DEFINE(HAVE_SFINAE_ANONYMOUS_BROKEN) - fi - AC_LANG_POP([C++]) -fi - -AC_SUBST(HAVE_SFINAE_ANONYMOUS_BROKEN) - -dnl =================================================================== dnl Clang++ tests dnl =================================================================== |