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scons: Workaround failures with MSVC when using SCons 3.0.[2-4].

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This change applies the workaround suggested by Bill Deegan on the
affected SCons versions.

It also adds a comment with the URL explaining why we were using
customizing the decider and max_drift in the first place, as I had
forgotten all about it.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109443
Tested-by: liviuprodea@yahoo.com
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Jose Fonseca 2019-02-28 09:53:28 +00:00
parent f3454823d1
commit 17361a3be9
1 changed files with 7 additions and 1 deletions
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8
scons/gallium.py
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@ -308,7 +308,13 @@ def generate(env):
if env.GetOption('num_jobs') <= 1:
env.SetOption('num_jobs', num_jobs())
env.Decider('MD5-timestamp')
# Speed up dependency checking. See
# - https://github.com/SCons/scons/wiki/GoFastButton
# - https://bugs.freedesktop.org/show_bug.cgi?id=109443
scons_version = distutils.version.StrictVersion(SCons.__version__)
if scons_version < distutils.version.StrictVersion('3.0.2') or \
scons_version > distutils.version.StrictVersion('3.0.4'):
env.Decider('MD5-timestamp')
env.SetOption('max_drift', 60)
# C preprocessor options