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49 lines
2.2 KiB
Bash
Executable File
49 lines
2.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2017 Google Inc.
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# All Rights Reserved.
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#
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# This file is typically sourced by another script.
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# if possible, ask for the precise number of processors,
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# otherwise take 2 processors as reasonable default; see
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# https://docs.travis-ci.com/user/speeding-up-the-build/#Makefile-optimization
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if [ -x /usr/bin/getconf ]; then
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NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN)
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else
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NPROCESSORS=2
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fi
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# as of 2017-09-04 Travis CI reports 32 processors, but GCC build
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# crashes if parallelized too much (maybe memory consumption problem),
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# so limit to 4 processors for the time being.
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if [ $NPROCESSORS -gt 4 ] ; then
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echo "$0:Note: Limiting processors to use by make from $NPROCESSORS to 4."
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NPROCESSORS=4
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fi
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