Commit fe889a89 authored by Jose Fonseca's avatar Jose Fonseca

scons: Control caching via new SCONS_CACHE_DIR environment variable.

This serves several purposes:
- disable caching in situations were is it useless or undesired
- share caches among all trees
- simplify purging the cache (when it's a single location)
- move the cache out of the tree, since that slows downs IDEs considerably

To retain previous behavior just define do

  export SCONS_CACHE_DIR=$PWD/build/cache

before invoking scons.
parent abdcdb3d
......@@ -155,7 +155,9 @@ def generate(env):
# different scons versions building the same source file
env['build'] = build_dir
env.SConsignFile(os.path.join(build_dir, '.sconsign'))
if 'SCONS_CACHE_DIR' in os.environ:
print 'scons: Using build cache in %s.' % (os.environ['SCONS_CACHE_DIR'],)
env['CONFIGUREDIR'] = os.path.join(build_dir, 'conf')
env['CONFIGURELOG'] = os.path.join(os.path.abspath(build_dir), 'config.log')
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