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| author | Boris Kolpackov <boris@codesynthesis.com> | 2013-02-11 10:15:32 +0200 |
|---|---|---|
| committer | Boris Kolpackov <boris@codesynthesis.com> | 2013-02-11 10:15:32 +0200 |
| commit | ebe3b33e255a0b73554b30ea146e2d2e2310b688 (patch) | |
| tree | 2209ff99a54f1cdb0926114393d9c6103e34e34f | |
| parent | f2dd2a2e8af3b16b2c4828b21c21e31198fb464b (diff) | |
Detect POSIX threads on MinGW-W64
| -rw-r--r-- | m4/threads.m4 | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/m4/threads.m4 b/m4/threads.m4 index 9a7da53..1609a04 100644 --- a/m4/threads.m4 +++ b/m4/threads.m4 @@ -22,7 +22,16 @@ if test x$threads = xcheck; then CXXFLAGS="$CXXFLAGS -mthreads" ;; esac - threads=win32 + + # Newer versions of GCC can be configured to use either Win32 or POSIX + # threads. It appears that -mthreads should be used in both cases but + # if the model is POSIX then GCC will also link -lpthread by default. + # Use that fact to test which model we have. + # + AC_TRY_LINK([#include <pthread.h>], + [pthread_create(0,0,0,0);], + [threads=posix], + [threads=win32]) ;; *) ACX_PTHREAD |