diff options
| author | Julien Lerouge <jlerouge@apple.com> | 2009-10-26 19:58:44 +0000 |
|---|---|---|
| committer | Julien Lerouge <jlerouge@apple.com> | 2009-10-26 19:58:44 +0000 |
| commit | c438e2b035300052b147b83dfe48dd8becd92697 (patch) | |
| tree | ac9a411172af38925805dc8cccbd37dec7987711 /autoconf | |
| parent | 64948f805fbd7e5d69066d85f8dee30c9d84bf1f (diff) | |
| download | external_llvm-c438e2b035300052b147b83dfe48dd8becd92697.zip external_llvm-c438e2b035300052b147b83dfe48dd8becd92697.tar.gz external_llvm-c438e2b035300052b147b83dfe48dd8becd92697.tar.bz2 | |
Add an autoconf test to check for optional compiler flags like
-Wno-missing-field-initializers or -Wno-variadic-macros.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85147 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf')
| -rw-r--r-- | autoconf/configure.ac | 6 | ||||
| -rw-r--r-- | autoconf/m4/cxx_flag_check.m4 | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac index b9ad6bb..794326d 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -943,6 +943,12 @@ fi dnl Tool compatibility is okay if we make it here. AC_MSG_RESULT([ok]) +dnl Check optional compiler flags. +AC_MSG_CHECKING([optional compiler flags]) +CXX_FLAG_CHECK(NO_VARIADIC_MACROS, [-Wno-variadic-macros]) +CXX_FLAG_CHECK(NO_MISSING_FIELD_INITIALIZERS, [-Wno-missing-field-initializers]) +AC_MSG_RESULT([$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS]) + dnl===-----------------------------------------------------------------------=== dnl=== dnl=== SECTION 5: Check for libraries diff --git a/autoconf/m4/cxx_flag_check.m4 b/autoconf/m4/cxx_flag_check.m4 new file mode 100644 index 0000000..ab09f2a --- /dev/null +++ b/autoconf/m4/cxx_flag_check.m4 @@ -0,0 +1,2 @@ +AC_DEFUN([CXX_FLAG_CHECK], + [AC_SUBST($1, `$CXX $2 -fsyntax-only -xc /dev/null 2>/dev/null && echo $2`)]) |