path: root/waftools
diff options
authorStefano Pigozzi <>2014-04-27 09:05:07 +0200
committerStefano Pigozzi <>2014-04-27 10:40:01 +0200
commitce48da9e027c9e8b685a74f04e9163952c5a5320 (patch)
treef057c2be29fcc121070dd938779b876b0beb76c2 /waftools
parentae0c8ca219184bce33ec713b43868b6f5b22f055 (diff)
build: use -pthread when available
Our code currently tries to link -lpthread and adds stuff like -D_REENTRANT based on the target platform. GCC actually supports to just pass a -pthread compiler and linker flag that will automatically enable threading and define the correct symbols for the platform, so let's try to just use that as our first choice. clang also supports -pthread but it must be used only as a compiler flag, so we also take care of that scenario with this commit.
Diffstat (limited to 'waftools')
1 files changed, 13 insertions, 0 deletions
diff --git a/waftools/checks/ b/waftools/checks/
index ce9735435d..20b18675db 100644
--- a/waftools/checks/
+++ b/waftools/checks/
@@ -8,7 +8,20 @@ __all__ = ["check_pthreads", "check_iconv", "check_lua", "check_oss_4front",
pthreads_program = load_fragment('pthreads.c')
+def check_pthread_flag(ctx, dependency_identifier):
+ checks = [
+ check_cc(fragment = pthreads_program, cflags = '-pthread'),
+ check_cc(fragment = pthreads_program, cflags = '-pthread',
+ linkflags = '-pthread') ]
+ for fn in checks:
+ if fn(ctx, dependency_identifier):
+ return True
+ return False
def check_pthreads(ctx, dependency_identifier):
+ if check_pthread_flag(ctx, dependency_identifier):
+ return True
platform_cflags = {
'linux': '-D_REENTRANT',
'freebsd': '-D_THREAD_SAFE',