Travis CI OSX MacOS builds with Fortran
Travis-CI MacOS builds (denoted osx
in .travis.yml
)
emerged from beta
in April 2013 using cloud-based Mac hardware.
In January-March 2018,
additional Travis-CI resources
were progressively brought online, completed in March 2018.
The speed for Travis-CI OSX builds is quite fast, almost as fast to start as Linux.

Travis-CI MacOS queue
Template
Typical .travis.yml
for MacOSX (including Linux) for a Fortran build that happens to use Lapack and MPI looks like:
language: minimal
group: travis_latest
git:
depth: 25
quiet: true
env: FC=gfortran
addons:
apt:
packages: ['gfortran','liblapack-dev','libopenmpi-dev']
matrix:
include:
- os: linux
- os: osx
before_install:
- brew upgrade gcc > /dev/null
- brew install lapack open-mpi > /dev/null
install:
- cmake -B build
- cmake --build build
script:
- ctest --test-dir build --output-on-failure
Keep the brew update
step as sometimes Travis-CI will break on brew install
without first doing brew update
if the Travis-CI MacOS image hasn’t been updated in a while.
Metrics
The Travis-CI status panel shows that the MacOS backlog since March 2018 is typically near zero like the Linux builds. Before 2018, the OSX build backlog could be in the hundreds or thousands of jobs–this is no longer an issue. The Linux backlog typically stays at or near zero.
Paid Travis-CI.com customers should also experience
short wait times
of a minute or so for osx
builds.