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GN: Pass a better -j option when using goma

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When using goma, we can pass a big -j to ninja.

R=asiva@google.com, floitsch@google.com, whesse@google.com

Review-Url: https://codereview.chromium.org/2559303002 .
This commit is contained in:
Zachary Anderson 2016-12-09 22:11:55 -08:00
parent 82ee421bb0
commit 9c77f4af2f
1 changed files with 14 additions and 1 deletions
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15
tools/build.py
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@ -416,13 +416,26 @@ def RunGN(target_os, mode, arch):
print ("Tried to run GN, but it failed. Try running it manually: \n\t$ " +
' '.join(gn_command))
def ShouldRunGN(out_dir):
return (not os.path.exists(out_dir) or
not os.path.isfile(os.path.join(out_dir, 'args.gn')))
def UseGoma(out_dir):
args_gn = os.path.join(out_dir, 'args.gn')
return 'use_goma = true' in open(args_gn, 'r').read()
def BuildNinjaCommand(options, target, target_os, mode, arch):
out_dir = utils.GetBuildRoot(HOST_OS, mode, arch, target_os)
if not os.path.exists(out_dir):
if ShouldRunGN(out_dir):
RunGN(target_os, mode, arch)
command = ['ninja', '-C', out_dir]
if options.verbose:
command += ['-v']
if UseGoma(out_dir):
command += ['-j200']
command += [target]
return command