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48 lines
2.2 KiB
48 lines
2.2 KiB
#!/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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