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41 lines
1.4 KiB
Plaintext
41 lines
1.4 KiB
Plaintext
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# Copyright (c) 2014 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import("//build/toolchain/goma.gni")
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# Defines the configuration of cc wrapper
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# ccache: a c/c++ compiler cache which can greatly reduce recompilation times.
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# icecc, distcc: it takes compile jobs from a build and distributes them among
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# remote machines allowing a parallel build.
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#
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# TIPS
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#
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# 1) ccache
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# Set clang_use_chrome_plugins=false if using ccache 3.1.9 or earlier, since
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# these versions don't support -Xclang. (3.1.10 and later will silently
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# ignore -Xclang, so it doesn't matter if you disable clang_use_chrome_plugins
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# or not).
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#
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# Use ccache 3.2 or later to avoid clang unused argument warnings:
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# https://bugzilla.samba.org/show_bug.cgi?id=8118
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#
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# To avoid -Wparentheses-equality clang warnings, at some cost in terms of
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# speed, you can do:
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# export CCACHE_CPP2=yes
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#
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# 2) icecc
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# Set clang_use_chrome_plugins=false because icecc cannot distribute custom
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# clang libraries.
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#
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# To use icecc and ccache together, set cc_wrapper = "ccache" with
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# export CCACHE_PREFIX=icecc
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declare_args() {
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# Set to "ccache", "icecc" or "distcc". Probably doesn't work on windows.
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cc_wrapper = ""
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}
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assert(!use_goma || cc_wrapper == "",
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"use_goma and cc_wrapper can not be used together.")
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