scons: Add -fno-common for 64-bit builds on Mac OS X.

This option is also needed for 64-bit builds if llvm is enabled.
Other the build fails during linking.

diff --git a/scons/gallium.py b/scons/gallium.py
index 03a4ef58815f1cf434ecaf9a40709f01fd93214c..d9a5fe0eeafc6d5e63163880f0aac83856b838ed 100644 (file)
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -291,6 +291,8 @@ def generate(env):
                 ]
         if env['machine'] == 'x86_64':
             ccflags += ['-m64']
+            if platform == 'darwin':
+                ccflags += ['-fno-common']
         # See also:
         # - http://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
         ccflags += [