49 lines
2.2 KiB
49 lines
2.2 KiB
#!/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
|