[setup.py] use MSVC 10.0 when compiling for Windows Python 2.7

Python 2.7 for Windows is compiled using MS Visaul C++ 9.0 (Visual Studio 2008).
However the latter does not support many modern C++ features which are
required to compile the Brotli encoder. So we monkey-patch distutils
to always look for MSVC version 10.0 instead of 9.0.

1 files changed, 15 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index 3b3419b..c78553e 100644
--- a/setup.py
+++ b/setup.py
@@ -1,9 +1,24 @@
+import distutils
 from distutils.core import setup, Extension
 from distutils.command.build_ext import build_ext
 from distutils.cmd import Command
 import platform
 
 
+# when compiling for Windows Python 2.7, force distutils to use Visual Studio
+# 2010 instead of 2008, as the latter doesn't support c++0x
+if platform.system() == 'Windows':
+    try:
+        import distutils.msvc9compiler
+    except distutils.errors.DistutilsPlatformError:
+        pass  # importing msvc9compiler raises when running under MinGW
+    else:
+        orig_find_vcvarsall = distutils.msvc9compiler.find_vcvarsall
+        def patched_find_vcvarsall(version):
+            return orig_find_vcvarsall(version if version != 9.0 else 10.0)
+        distutils.msvc9compiler.find_vcvarsall = patched_find_vcvarsall
+
+
 class TestCommand(Command):
     """ Run all *_test.py scripts in 'tests' folder with the same Python
     interpreter used to run setup.py.