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| author | Boris Kolpackov <boris@codesynthesis.com> | 2013-02-11 10:15:34 +0200 |
|---|---|---|
| committer | Boris Kolpackov <boris@codesynthesis.com> | 2013-02-11 10:15:34 +0200 |
| commit | f3c317cc640413de79e92ae69bc6b2aa856c6cc0 (patch) | |
| tree | 411aefb4c3de01b1f64129667a28e560137a0156 /m4/threads.m4 | |
| parent | 0131fe60daf703589192987afdc0c67fc1941860 (diff) | |
Detect POSIX threads on MinGW-W64
Diffstat (limited to 'm4/threads.m4')
| -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 |