| Austin Schuh | 889ac43 | 2018-10-29 22:57:02 -0700 | [diff] [blame] | 1 | #!/usr/bin/env bash |
| 2 | # Copyright 2017 Google Inc. |
| 3 | # All Rights Reserved. |
| 4 | # |
| 5 | # |
| 6 | # Redistribution and use in source and binary forms, with or without |
| 7 | # modification, are permitted provided that the following conditions are |
| 8 | # met: |
| 9 | # |
| 10 | # * Redistributions of source code must retain the above copyright |
| 11 | # notice, this list of conditions and the following disclaimer. |
| 12 | # * Redistributions in binary form must reproduce the above |
| 13 | # copyright notice, this list of conditions and the following disclaimer |
| 14 | # in the documentation and/or other materials provided with the |
| 15 | # distribution. |
| 16 | # * Neither the name of Google Inc. nor the names of its |
| 17 | # contributors may be used to endorse or promote products derived from |
| 18 | # this software without specific prior written permission. |
| 19 | # |
| 20 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | |
| 32 | # This file is typically sourced by another script. |
| 33 | # if possible, ask for the precise number of processors, |
| 34 | # otherwise take 2 processors as reasonable default; see |
| 35 | # https://docs.travis-ci.com/user/speeding-up-the-build/#Makefile-optimization |
| 36 | if [ -x /usr/bin/getconf ]; then |
| 37 | NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN) |
| 38 | else |
| 39 | NPROCESSORS=2 |
| 40 | fi |
| 41 | |
| 42 | # as of 2017-09-04 Travis CI reports 32 processors, but GCC build |
| 43 | # crashes if parallelized too much (maybe memory consumption problem), |
| 44 | # so limit to 4 processors for the time being. |
| 45 | if [ $NPROCESSORS -gt 4 ] ; then |
| 46 | echo "$0:Note: Limiting processors to use by make from $NPROCESSORS to 4." |
| 47 | NPROCESSORS=4 |
| 48 | fi |