README_OSX.md

Patch for OSX (clang)

The compile flag -fopenmp doesn't work for clang, so if your gcc is link to clang you might need to take solutions below:

1. Install gcc and make sure gcc in $PATH is point to real gcc, not clang.
2. If you don't have gcc installed, apply patch below to change compile flag.

--- ocrolib/native.py	2015-02-21 13:34:52.000000000 +0800
+++ ocrolib_osx/native.py	2015-02-21 15:29:56.000000000 +0800
@@ -41,7 +41,7 @@
     pass
 
 def compile_and_find(c_string,prefix=".pynative",opt="-g -O4",libs="-lm",
-                     options="-shared -fopenmp -std=c99 -fPIC",verbose=0):
+                     options="-shared -openmp -std=c99 -fPIC",verbose=0):
     if not os.path.exists(prefix):
         os.mkdir(prefix)
     m = hashlib.md5()