25 lines
847 B
Plaintext
25 lines
847 B
Plaintext
#
|
|
# Determine if the compiler accepts -fvisibility-inlines-hidden
|
|
#
|
|
# This macro is specific to LLVM.
|
|
#
|
|
AC_DEFUN([AC_CXX_USE_VISIBILITY_INLINES_HIDDEN],
|
|
[AC_CACHE_CHECK([for compiler -fvisibility-inlines-hidden option],
|
|
[llvm_cv_cxx_visibility_inlines_hidden],
|
|
[ AC_LANG_PUSH([C++])
|
|
oldcxxflags="$CXXFLAGS"
|
|
CXXFLAGS="$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="$oldcxxflags"
|
|
AC_LANG_POP([C++])
|
|
])
|
|
if test "$llvm_cv_cxx_visibility_inlines_hidden" = yes ; then
|
|
AC_SUBST([ENABLE_VISIBILITY_INLINES_HIDDEN],[1])
|
|
else
|
|
AC_SUBST([ENABLE_VISIBILITY_INLINES_HIDDEN],[0])
|
|
fi
|
|
])
|