1 files changed, 10 insertions, 1 deletions
diff --git a/setup.py b/setup.py
index 01e9180854..2f73e94c45 100644
--- a/setup.py
+++ b/setup.py
@@ -80,10 +80,19 @@ EXTENSION_INCLUDE_DIRECTORIES = (
 
 EXTENSION_LIBRARIES = ('m',)
 if not "darwin" in sys.platform:
-    EXTENSION_LIBRARIES += ('rt',)
+  EXTENSION_LIBRARIES += ('rt',)
 
 DEFINE_MACROS = (('OPENSSL_NO_ASM', 1),)
 
+CFLAGS = ()
+LDFLAGS = ()
+if "linux" in sys.platform:
+  LDFLAGS += ('-Wl,-wrap,memcpy',)
+if "linux" in sys.platform or "darwin" in sys.platform:
+  CFLAGS += ('-fvisibility=hidden',)
+  DEFINE_MACROS += (('PyMODINIT_FUNC', '__attribute__((visibility ("default"))) void'),)
+
+
 def cython_extensions(package_names, module_names, include_dirs, libraries,
                       define_macros, build_with_cython=False):
   if ENABLE_CYTHON_TRACING: