scons: Don't list MSVS_VERSION option outside windows platforms.
diff --git a/common.py b/common.py
index f218e6f..8f13186 100644
--- a/common.py
+++ b/common.py
@@ -91,4 +91,5 @@
opts.Add(BoolOption('debug', 'DEPRECATED: debug build', 'yes'))
opts.Add(BoolOption('profile', 'DEPRECATED: profile build', 'no'))
opts.Add(BoolOption('quiet', 'DEPRECATED: quiet command lines', 'yes'))
- opts.Add(EnumOption('MSVS_VERSION', 'MS Visual C++ version', None, allowed_values=('7.1', '8.0', '9.0')))
+ if host_platform == 'windows':
+ opts.Add(EnumOption('MSVS_VERSION', 'MS Visual C++ version', None, allowed_values=('7.1', '8.0', '9.0')))