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name: 'set-make-job-count'
description: 'Set the MAKE_JOB_COUNT environment variable to a value suitable for the host runner'
runs:
using: "composite"
steps:
# Each job runner requires 2.25 GiB (i.e. 1024 * 9/4 MiB) memory and
# a dedicated logical CPU core
- name: set-jobs-macOS
if: runner.os == 'macOS'
run: |
echo MAKE_JOB_COUNT=$(expr $(printf '%s\n%s' $(( $(sysctl -n hw.memsize) * 4 / (1073741824 * 9) )) $(sysctl -n hw.logicalcpu) | sort -n | head -n1) '|' 1) >> $GITHUB_ENV
shell: bash
- name: set-jobs-windows
if: runner.os == 'Windows'
run: |
echo MAKE_JOB_COUNT=$(expr $(printf '%s\n%s' $(( $(grep MemTotal: /proc/meminfo | cut -d: -f2 | cut -dk -f1) * 4 / (1048576 * 9) )) $(nproc) | sort -n | head -n1) '|' 1) >> $GITHUB_ENV
shell: msys2 {0}
- name: set-jobs-linux
if: runner.os == 'Linux'
run: |
echo MAKE_JOB_COUNT=$(expr $(printf '%s\n%s' $(( $(grep MemTotal: /proc/meminfo | cut -d: -f2 | cut -dk -f1) * 4 / (1048576 * 9) )) $(nproc) | sort -n | head -n1) '|' 1) >> $GITHUB_ENV
shell: bash
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