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