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-rw-r--r--python/README.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/python/README.txt b/python/README.txt
index bb0032fe..e052e895 100644
--- a/python/README.txt
+++ b/python/README.txt
@@ -47,6 +47,7 @@ Installation
$ python setup.py build
$ python setup.py test
+ $ python setup.py exttest # To test C++ implementation (see below).
If some tests fail, this library may not work correctly on your
system. Continue at your own risk.
@@ -90,6 +91,7 @@ To use the C++ implementation, you need to:
2) Export an environment variable:
$ export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=cpp
+ $ export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION=2
You need to export this variable before running setup.py script to build and
install the extension. You must also set the variable at runtime, otherwise