.travis.yml

language: go
go:
  - "1.10"
# - "tip"

# first part of the GOARCH workaround
# setting the GOARCH directly doesn't work, since the value will be overwritten later
# so set it to a temporary environment variable first
env:
  global:
    TRAVIS_CGO_ENABLED=1
    TRAVIS_GOOS=linux
  matrix:
    - TRAVIS_GOARCH=amd64
    - TRAVIS_GOARCH=arm TRAVIS_CC=arm-linux-gnueabi-gcc TRAVIS_GOARM=6

# second part of the GOARCH workaround
# now actually set the GOARCH env variable to the value of the temporary variable set earlier
before_install:
  - sudo apt-get install gcc-arm-linux-gnueabi # for CGO cross compile to ARM
  - export CGO_ENABLED=$TRAVIS_CGO_ENABLED GOARCH=$TRAVIS_GOARCH GOARM=$TRAVIS_GOARM GOOS=$TRAVIS_GOOS CC=$TRAVIS_CC
  - go env # for debugging
  - go tool dist env # for debugging