From eb825cbffdc7283fde4b9b71eb395940da682493 Mon Sep 17 00:00:00 2001
From: Ryan Curtin <ryan@ratml.org>
Date: Tue, 7 Nov 2017 15:02:14 -0500
Subject: [PATCH] Don't use -pthread on OS X.

---
 CMakeLists.txt | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 00597615ff..ef9f9298ec 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -88,8 +88,10 @@ if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
   # Link everything with -lm.
   set(COMPILER_SUPPORT_LIBRARIES ${COMPILER_SUPPORT_LIBRARIES} "m")
   set(MLPACK_LIBRARIES ${MLPACK_LIBRARIES} "m")
-  # Use -pthread.
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
+  # Use -pthread, but not on OS X.
+  if (NOT APPLE)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
+  endif ()
 endif()
 
 # Setup build for test coverage