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| author | Daniel Dunbar <daniel@zuster.org> | 2008-08-30 01:16:19 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2008-08-30 01:16:19 +0000 |
| commit | dcf114e8610784e15c89eed2ad3ca930fa0634ed (patch) | |
| tree | fab38965d9c4d650460254a0174d61916f173d49 /autoconf/m4 | |
| parent | c4db7276e0055931bb29942d12a10494f569e749 (diff) | |
Enable -fvisibility-inlines-hidden by default for compilers which
support it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55557 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf/m4')
| -rw-r--r-- | autoconf/m4/visibility_inlines_hidden.m4 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/autoconf/m4/visibility_inlines_hidden.m4 b/autoconf/m4/visibility_inlines_hidden.m4 new file mode 100644 index 0000000000..42ddbe9128 --- /dev/null +++ b/autoconf/m4/visibility_inlines_hidden.m4 @@ -0,0 +1,22 @@ +# +# 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 +]) |