llvm-mirror/autoconf/m4/visibility_inlines_hidden.m4
Daniel Dunbar 4929090fb1 Reapply majority of r55557 but with the changes to compilation flags
disabled until issues with gcc 4.1 on linux 32-bit are resolved.

llvm-svn: 55636
2008-09-02 17:35:16 +00:00

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#
# 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 -fvisibility-inlines-hidden"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
[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
])