[PYTHON] README: explain homebrew shenanigans
diff --git a/python/README.md b/python/README.md
index bf92a94..c63191a 100644
--- a/python/README.md
+++ b/python/README.md
@@ -52,17 +52,35 @@
$ python setup.py build
$ python setup.py google_test
+ To build, test, and use the C++ implementation, you must first compile
+ libprotobuf.so:
+
+ $ (cd .. && make)
+
+ On OS X:
+
+ If you are running a homebrew-provided python, you must make sure another
+ version of protobuf is not already installed, as homebrew's python will
+ search /usr/local/lib for libprotobuf.so before it searches ../src/.libs
+ You can either unlink homebrew's protobuf or install the libprotobuf you
+ built earlier:
+
+ $ brew unlink protobuf
+ or
+ $ (cd .. && make install)
+
+ On other *nix:
+
+ You must make libprotobuf.so dynamically available. You can either
+ install libprotobuf you built earlier, or set LD_LIBRARY_PATH:
+
+ $ export LD_LIBRARY_PATH=../src/.libs
+ or
+ $ (cd .. && make install)
+
To build the C++ implementation run:
$ python setup.py build --cpp_implementation
- To test and use the C++ implementation, you must make libprotobuf.so
- from the C++ build accessible. You can either install the C++ code
- you built, or set LD_LIBRARY_PATH:
-
- $ (cd .. && make install)
- or
- $ export LD_LIBRARY_PATH=../src/.libs
-
Then run the tests like so:
$ python setup.py google_test --cpp_implementation
