diff options
| author | Vincent Ambo <tazjin@google.com> | 2020-05-27T00·26+0100 |
|---|---|---|
| committer | Vincent Ambo <tazjin@google.com> | 2020-05-27T00·26+0100 |
| commit | 6941048b7e55ec85ec257c4f597e7f0d54e1584d (patch) | |
| tree | 35b90141e36142f5ebb5910fc0b08e0018e4486a /third_party/glog/m4/using_operator.m4 | |
| parent | 7dc094173b641c78a449395cc6f28a5e52b6fe64 (diff) | |
| parent | afe04691aca3f669f517adaeb5bd4a87a481fb4a (diff) | |
merge(3p/glog): Vendor glog from commit 'afe04691' r/863
Diffstat (limited to 'third_party/glog/m4/using_operator.m4')
| -rw-r--r-- | third_party/glog/m4/using_operator.m4 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/third_party/glog/m4/using_operator.m4 b/third_party/glog/m4/using_operator.m4 new file mode 100644 index 000000000000..95a9951eb346 --- /dev/null +++ b/third_party/glog/m4/using_operator.m4 @@ -0,0 +1,15 @@ +AC_DEFUN([AC_CXX_USING_OPERATOR], + [AC_CACHE_CHECK( + whether compiler supports using ::operator<<, + ac_cv_cxx_using_operator, + [AC_LANG_SAVE + AC_LANG_CPLUSPLUS + AC_TRY_COMPILE([#include <iostream> + std::ostream& operator<<(std::ostream&, struct s);], + [using ::operator<<; return 0;], + ac_cv_cxx_using_operator=1, + ac_cv_cxx_using_operator=0) + AC_LANG_RESTORE]) + if test "$ac_cv_cxx_using_operator" = 1; then + AC_DEFINE(HAVE_USING_OPERATOR, 1, [define if the compiler supports using expression for operator]) + fi]) |