zig-cross-compile.yml

# This workflow uses Zig and its excellent cross-compilation support to test
# compiling for multiple platforms. No tests are actually run since it would
# require emulation.
name: zig cross-compile

on: [ push, pull_request ]

jobs:
  build:
    name: ${{ matrix.ttriple }} thr:${{ matrix.enable_threads }} dll:${{ matrix.shared_libs }}
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        # TODO: move from nightly to zig 0.12 final when released.
        zig_version: [ "0.12.0-dev.2076+8fd15c6ca" ]
        # Some of the triples are commented out just to speedup this workflow.
        ttriple: [
          aarch64-linux-gnu,
          #aarch64-linux-musl,
          aarch64-macos-none,
          aarch64-windows-gnu,
          #aarch64_be-linux-gnu,
          aarch64_be-linux-musl,
          #arm-linux-gnueabi,
          arm-linux-gnueabihf,
          arm-linux-musleabi,
          #arm-linux-musleabihf,
          armeb-linux-gnueabi,
          #armeb-linux-gnueabihf,
          #armeb-linux-musleabi,
          armeb-linux-musleabihf,
          #mips-linux-gnueabi,
          #mips-linux-gnueabihf,
          mips-linux-musl,
          mips64-linux-gnuabi64,
          #mips64-linux-gnuabin32,
          mips64-linux-musl,
          #mips64el-linux-gnuabi64,
          mips64el-linux-gnuabin32,
          mips64el-linux-musl,
          mipsel-linux-gnueabi,
          #mipsel-linux-gnueabihf,
          mipsel-linux-musl,
          #powerpc-linux-gnueabi,
          powerpc-linux-gnueabihf,
          #powerpc-linux-musl,
          powerpc64-linux-gnu,
          #powerpc64-linux-musl,
          #powerpc64le-linux-gnu,
          powerpc64le-linux-musl,
          riscv64-linux-musl,
          sparc64-linux-gnu,
          thumb-linux-gnueabi,
          #thumb-linux-gnueabihf,
          #thumb-linux-musleabi,
          thumb-linux-musleabihf,
          wasm32-wasi-musl,
          #x86-linux-gnu,
          x86-linux-musl,
          x86-windows-gnu,
          x86_64-linux-gnu.2.27, # with a glibc version
          x86_64-linux-gnux32,
          #x86_64-linux-musl,
          x86_64-macos-none,
          x86_64-windows-gnu,
        ]
        enable_threads: [ false, true ]
        shared_libs: [ false, true ]
        include:
        # TODO: remove CFLAGS_EXTRA after exception.h, getsect.h added to zig.
        - ttriple: aarch64-macos-none
          cflags_extra: "-D NO_MPROTECT_VDB -D MISSING_MACH_O_GETSECT_H"
        - ttriple: x86_64-macos-none
          cflags_extra: "-D NO_MPROTECT_VDB -D MISSING_MACH_O_GETSECT_H"
        exclude:
        - enable_threads: true
          ttriple: wasm32-wasi-musl
        # The following ones have "exceeds the max lock-free size" warning.
        - enable_threads: true
          ttriple: arm-linux-gnueabi
        - enable_threads: true
          ttriple: arm-linux-musleabi
        - enable_threads: true
          ttriple: armeb-linux-gnueabi
        - enable_threads: true
          ttriple: thumb-linux-gnueabi
        - enable_threads: true
          ttriple: thumb-linux-musleabi
        - enable_threads: true
          ttriple: thumb-linux-musleabihf
        # The following ones have some zig link issue.
        - shared_libs: true
          ttriple: aarch64_be-linux-gnu
        - shared_libs: true
          ttriple: aarch64_be-linux-musl
        - shared_libs: true
          ttriple: armeb-linux-gnueabi
        - shared_libs: true
          ttriple: armeb-linux-gnueabihf
        - shared_libs: true
          ttriple: armeb-linux-musleabi
        - shared_libs: true
          ttriple: armeb-linux-musleabihf
        - shared_libs: true
          ttriple: mips64-linux-gnuabin32
        - shared_libs: true
          ttriple: mips64el-linux-gnuabin32
        - shared_libs: true
          ttriple: powerpc-linux-gnueabi
        - shared_libs: true
          ttriple: powerpc-linux-gnueabihf
        - shared_libs: true
          ttriple: sparc64-linux-gnu # FIXME: recompile with -fPIC
        - shared_libs: true
          ttriple: thumb-linux-gnueabi
        - shared_libs: true
          ttriple: thumb-linux-gnueabihf
        - shared_libs: true
          ttriple: x86_64-linux-gnux32 # FIXME: recompile with -fPIC

    steps:
    - uses: actions/checkout@v4
    - name: "Install zig"
      run: |
        mkdir zig && curl https://ziglang.org/builds/zig-linux-x86_64-${{matrix.zig_version}}.tar.xz | tar Jx --directory=zig --strip-components=1
    - name: Build
      run: >
        zig/zig build -Dtarget=${{ matrix.ttriple }}
        -DBUILD_SHARED_LIBS=${{ matrix.shared_libs }}
        -DCFLAGS_EXTRA="${{ matrix.cflags_extra }}"
        -Denable_threads=${{ matrix.enable_threads }}
        -Denable_werror