OS X fixed warns on -pthread,

OS X aliases gcc to clang.  clang accept -pthread, then complains about
it being unused.  So just omit -pthread on darwin.

Only one warning type left.  OS X complains daemon() is deprecated, but
provides no alternative except launchd.

OS X builds and install fine.  check still broken.

1 files changed, 3 insertions, 1 deletions

diff --git a/SConstruct b/SConstruct
index 7efc58ca..0a16e48a 100644
--- a/SConstruct
+++ b/SConstruct
@@ -505,7 +505,9 @@ else:
         if option not in config.env['CFLAGS']:
             config.CheckCompilerOption(option)
 
-    if config.CheckCompilerOption("-pthread"):
+    # OS X aliases gcc to clang
+    # clang accepts -pthread, then warns it is unused.
+    if config.CheckCompilerOption("-pthread") and not sys.platform.startswith('darwin'):
         env.MergeFlags("-pthread")
 
     env.Prepend(LIBPATH=[os.path.realpath(os.curdir)])