OpenModelica Cross Compile Docker Image

The Docker image used to cross compile OpenModelica FMUs from Linux to target platforms and create multi-platform FMUs.

Toolchains

Toolchain file	OS	C	Note
i686-linux-gnu	x86-64 Linux 32-bit	i686-linux-gnu-gcc
x86_64-linux-gnu	x86-64 Linux 64-bit	gcc -m64
aarch64-linux-gnu	AArch64 Linux 64-bit	aarch64-linux-gnu-gcc
arm-linux-gnueabi	ARM Linux 32-bit	arm-linux-gnueabi-gcc
arm-linux-gnueabihf	ARM Linux 32-bit	arm-linux-gnueabihf-gcc	hard-float
i686-w64-mingw32	x86-64 Windows 32-bit	i686-w64-mingw32-gcc	MINGW
x86_64-w64-mingw32	x86-64 Windows 64-bit	x86_64-w64-mingw32-gcc	MINGW

Versioning

The cross compilation image is versioned together with the version number of OpenModelica. So OpenModelica v1.26.0 expects to use this image with tag v1.26.0 for cross compiling Linux and Windows.

Build

export TAG=v1.26.0
docker build --pull --no-cache --tag crossbuild:$TAG .

Example usage inside container

Windows 32-bit

cd path/to/FMU/sources/
cmake -S . -B build_win32 -DCMAKE_TOOLCHAIN_FILE=/opt/cmake/toolchain/i686-w64-mingw32.cmake
cmake --build build_win32 --target create_fmu

Windows 64-bit

cd path/to/FMU/sources/
cmake -S . -B build_win64 -DCMAKE_TOOLCHAIN_FILE=/opt/cmake/toolchain/x86_64-w64-mingw32.cmake
cmake --build build_win64 --target create_fmu

Linux 32-bit

cd path/to/FMU/sources/
cmake  -S . -B build_linux32 -DCMAKE_TOOLCHAIN_FILE=/opt/cmake/toolchain/i686-linux-gnu.cmake
cmake --build build_linux32 --target create_fmu

Linux 64-bit

cd path/to/FMU/sources/
cmake  -S . -B build_linux64 -DCMAKE_TOOLCHAIN_FILE=/opt/cmake/toolchain/x86_64-linux-gnu.cmake
cmake --build build_linux64 --target create_fmu

Upload

Release Versions

The publish.yml workflow will build, sign and upload the Docker image to GitHub container registry for each release.

Development Versions

The build.yml workflow uploads all tested image versions to GitHub container registry.

Verifying Signature

Caution

Only download and run images you trust.

You can use cosign to verify the keyless signature from publish.yml:

export TAG=v1.26.0
cosign verify ghcr.io/openmodelica/crossbuild:$TAG \
       --certificate-identity=https://github.com/OpenModelica/openmodelica-crossbuild/.github/workflows/publish.yml@refs/tags/$TAG \
       --certificate-oidc-issuer=https://token.actions.githubusercontent.com

License

This repository is part of OpenModelica and licensed with OSMC PUBLIC LICENSE (OSMC-PL) VERSION 1.8, see ./OSMC-License.txt.