1 # 2 # Determine if the compiler accepts -fvisibility-inlines-hidden 3 # 4 # This macro is specific to LLVM. 5 # 6 AC_DEFUN([AC_CXX_USE_VISIBILITY_INLINES_HIDDEN], 7 [AC_CACHE_CHECK([for compiler -fvisibility-inlines-hidden option], 8 [llvm_cv_cxx_visibility_inlines_hidden], 9 [ AC_LANG_PUSH([C++]) 10 oldcxxflags="$CXXFLAGS" 11 CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden" 12 AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], 13 [llvm_cv_cxx_visibility_inlines_hidden=yes],[llvm_cv_cxx_visibility_inlines_hidden=no]) 14 CXXFLAGS="$oldcxxflags" 15 AC_LANG_POP([C++]) 16 ]) 17 if test "$llvm_cv_cxx_visibility_inlines_hidden" = yes ; then 18 AC_SUBST([ENABLE_VISIBILITY_INLINES_HIDDEN],[1]) 19 else 20 AC_SUBST([ENABLE_VISIBILITY_INLINES_HIDDEN],[0]) 21 fi 22 ]) 23
