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https://github.com/goreleaser/goreleaser-cross
Docker image for Golang cross-compiling with CGO
https://github.com/goreleaser/goreleaser-cross
Last synced: 3 months ago
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Docker image for Golang cross-compiling with CGO
- Host: GitHub
- URL: https://github.com/goreleaser/goreleaser-cross
- Owner: goreleaser
- License: mit
- Created: 2022-01-24T14:20:52.000Z (over 2 years ago)
- Default Branch: master
- Last Pushed: 2024-01-09T19:31:54.000Z (6 months ago)
- Last Synced: 2024-01-15T07:40:15.288Z (5 months ago)
- Language: Shell
- Size: 195 MB
- Stars: 105
- Watchers: 4
- Forks: 22
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- awesome-stars - goreleaser/goreleaser-cross - Docker image for Golang cross-compiling with CGO (Shell)
README
# goreleaser-cross
Docker container to turn CGO cross-compilation pain into a pleasure. It tested on [variety of platforms](#supported-toolchainsplatforms).
[Custom sysroots](#sysroot-howto) also can be used.
**Tip!**
Should you wish to see working [examples](#examples) instead of reading
## Credits
This project is rather a cookbook combining various projects into one. Special thanks to [osxcross](https://github.com/tpoechtrager/osxcross) for an amazing cross-compile environment for OSX.
## Docker
Docker images are available on both [GitHub](https://ghcr.io/goreleaser/goreleaser-cross) and [Docker hub](https://hub.docker.com/r/goreleaser/goreleaser-cross). The image's tag version follows Golang
release so if you use 1.19.4, you are effectively compiling your Go code using Golang at version 1.19.4. The actual version of the other tools installed within the Docker image like `goreleaser` can
be found in the [latest releases](https://github.com/goreleaser/goreleaser-cross/releases).
Images from version v1.17.4 are multi-arch. Supported hosts are listed in the table below.
| Host | Supported | `CC` is set to | `CXX` is set to |
|---------------------|:---------:|-----------------------|-----------------------|
| amd64 | ✅ | x86_64-linux-gnu-gcc | x86_64-linux-gnu-g++ |
| arm64 (aka aarch64) | ✅ | aarch64-linux-gnu-gcc | aarch64-linux-gnu-gcc |
Below are additional environment variables to set when cross compiling with CGO.
| Env variable | Value | Required | Notes |
|--------------------------|-----------------------------------------------|:------------------------------:|----------------------------------------------------------------------------------------------------|
| `CGO_ENABLED` | 1 | Yes | Instead of specifying it in each build it can be set globally during docker run `-e CGO_ENABLED=1` |
| `CC` | [see targets](#supported-toolchainsplatforms) | Optional | |
| `CXX` | [see targets](#supported-toolchainsplatforms) | Optional | |
| `PKG_CONFIG_SYSROOT_DIR` | | Required if sysroot is present | |
| `PKG_CONFIG_PATH` | | Optional | List of directories containing pkg-config files |
- **PKG_CONFIG_SYSROOT_DIR** modifies `-I` and `-L` to use the directories located in target's sysroot.
- The value of `PKG_CONFIG_SYSROOT_DIR` is prefixed to `-I` and `-L`. For instance `-I/usr/include/libfoo` becomes `-I/var/target/usr/include/libfoo`
with a `PKG_CONFIG_SYSROOT_DIR` set to `/var/target` (same rule apply to `-L`)
- **PKG_CONFIG_PATH** - A colon-separated list of directories to search for `.pc` files.
## Supported toolchains/platforms
| Platform | Arch | CC | CXX | Verified |
|----------------|-----------------|-----------------------------------------|-----------------------------------------|:---------------------:|
| Darwin | amd64 | o64-clang | o64-clang++ | ✅ |
| Darwin (M1/M2) | arm64 | oa64-clang | oa64-clang++ | ✅ |
| Linux | amd64 | x86_64-linux-gnu-gcc | x86_64-linux-gnu-g++ | ✅ |
| Linux | arm64 | aarch64-linux-gnu-gcc | aarch64-linux-gnu-g++ | ✅ |
| Linux | armhf (GOARM=5) | arm-linux-gnueabihf-gcc | arm-linux-gnueabihf-g++ | Verification required |
| Linux | armhf (GOARM=6) | arm-linux-gnueabihf-gcc | arm-linux-gnueabihf-g++ | Verification required |
| Linux | armhf (GOARM=7) | arm-linux-gnueabihf-gcc | arm-linux-gnueabihf-g++ | ✅ |
| Linux | s390x | s390x-linux-gnu-gcc | s390x-linux-gnu-g++ | ✅ |
| Windows | amd64 | x86_64-w64-mingw32-gcc | x86_64-w64-mingw32-g++ | ✅ |
| Windows | arm64 | /llvm-mingw/bin/aarch64-w64-mingw32-gcc | /llvm-mingw/bin/aarch64-w64-mingw32-g++ | ✅ |
## Docker
### Environment variables
- [Goreleaser](https://github.com/goreleaser/goreleaser) variables
- `GPG_KEY` (optional) - defaults to /secrets/key.gpg. ignored if file not found
- `DOCKER_CREDS_FILE` (optional) - path to JSON file with docker login credentials. Useful when push to multiple docker registries required
- `DOCKER_FAIL_ON_LOGIN_ERROR` (optional) - fail on docker login error
### Login to registry
#### Github Actions
Use [docker login](https://github.com/docker/login-action) to auth to repos and mount docker config file. For example:
```shell
docker run -v $(HOME)/.docker/config.json:/root/.docker/config.json ...
```
#### Docker Creds file
To login from within `goreleaser-cross` container create creds file.
```json
{
"registries": [
{
"user": "",
"pass": "",
"registry": "" // for example ghcr.io
}
]
}
```
## Sysroot howto
Most reasonable way to make a sysroot seem to be rsync and [the example](https://github.com/goreleaser/goreleaser-cross-example) is using it. You may want to
use [the script](https://github.com/goreleaser/goreleaser-cross/blob/master/scripts/sysroot-rsync.sh) to create sysroot for your desired setup. Lets consider creating sysroot for Raspberry Pi 4
running Debian Buster.
- install all required dev packages. for this example we will install libftdi1-dev, libusb-1.0-0-dev and opencv4
```bash
./sysroot-rsync.sh pi@
```
### sshfs
Though `sshfs` is a good way to test sysroot before running rsync it introduces cons. Some packages are creating absolute links and thus pointing to wrong files when mounted (
or appear as broken). For example RPI4 running Debian Buster the library `/usr/lib/x86_x64-gnu-linux/libpthread.so` is symlink to `/lib/x86_x64-gnu-linux/libpthread.so` instead
of `../../../lib/x86_x64-gnu-linux/libpthread.so`.
## Contributing
Any contribution helping to make this project is welcome
## Examples
- [Example described in this tutorial](https://github.com/goreleaser/goreleaser-cross-example)
## Projects using
- [Akash](https://github.com/ovrclk/akash)