diff --git a/CMakeLists.txt b/CMakeLists.txt
index 82c2f925..287e573f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -76,7 +76,11 @@ if (UNIX)
 
 	# warnings as errors:
 	# we have a problem with people checking in code with warnings.
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror -fPIC")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
+
+	if (NOT APPLE)
+		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
+	endif()
 
 	# For config.h, detect the libraries, functions, etc.
 	include(CheckIncludeFiles)