scons: Use a cache for built files.

Like ccache, but works on all OSes.

diff --git a/scons/gallium.py b/scons/gallium.py
index 2e490dde6e9adc082328f2e6796bc60070a570e5..9fa8d8ba89eea45b4148ac5a1cc1ece460212513 100644 (file)
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -206,6 +206,7 @@ def generate(env):
     # different scons versions building the same source file
     env['build'] = build_dir
     env.SConsignFile(os.path.join(build_dir, '.sconsign'))
+    env.CacheDir('build/cache')
 
     # C preprocessor options
     cppdefines = []