Cross-compilation for Mac

[vladimirvrabely]

Hi, I'm trying to setup a Gitlab CI pipeline by following this example.

The compilation for linux targets (x86_64-unknown-linux-gnu and aarch64-unknown-linux-gnu) succeeds, but it fails for macos. Does anybody have an idea?

Here are the steps in my local environment:

docker run --rm -v $(pwd):/io -it --entrypoint /bin/bash ghcr.io/pyo3/maturin

uv pip install --system ziglang

export TARGET=x86_64-apple-darwin

rustup target add $TARGET

maturin build --interpreter 3.12 --release --target $TARGET --zig

and it fails with the same error as Gitlab CI:

   Compiling pyo3-build-config v0.21.2
   Compiling pyo3-macros-backend v0.21.2
   Compiling pyo3-ffi v0.21.2
   Compiling pyo3 v0.21.2
   Compiling pyo3-macros v0.21.2
   Compiling pyo3-polars v0.15.0
   Compiling mylib v0.1.0 (/io)
error: linking with `/root/.cache/cargo-zigbuild/0.19.3/zigcc-x86_64-apple-darwin-db1e.sh` failed: exit status: 1

  = note: env -u IPHONEOS_DEPLOYMENT_TARGET -u TVOS_DEPLOYMENT_TARGET -u XROS_DEPLOYMENT_TARGET LC_ALL="C" PATH=

  ...

  = note: error: unable to find framework 'CoreFoundation'. searched paths:  none

  error: could not compile `mylib` (lib) due to 1 previous error
💥 maturin failed
  Caused by: Failed to build a native library through cargo
  Caused by: Cargo build finished with "exit status: 101": `env -u CARGO AR_x86_64_apple_darwin="/root/.cache/cargo-zigbuild/0.19.3/ar" CARGO_TARGET_X86_64_APPLE_DARWIN_LINKER="/root/.cache/cargo-zigbuild/0.19.3/zigcc-x86_64-apple-darwin-db1e.sh" CC_x86_64_apple_darwin="/root/.cache/cargo-zigbuild/0.19.3/zigcc-x86_64-apple-darwin-db1e.sh" CMAKE_TOOLCHAIN_FILE_x86_64_apple_darwin="/root/.cache/cargo-zigbuild/0.19.3/cmake/x86_64-apple-darwin-toolchain.cmake" CXX_x86_64_apple_darwin="/root/.cache/cargo-zigbuild/0.19.3/zigcxx-x86_64-apple-darwin-db1e.sh" MACOSX_DEPLOYMENT_TARGET="10.12" PYO3_CONFIG_FILE="/io/target/maturin/pyo3-config-x86_64-apple-darwin-3.12.txt" RANLIB_x86_64_apple_darwin="/root/.cache/cargo-zigbuild/0.19.3/zigranlib.sh" ZIG_COMMAND="/opt/python/cp38-cp38/bin/python3 -m ziglang" "cargo" "rustc" "--features" "pyo3/extension-module" "--target" "x86_64-apple-darwin" "--message-format" "json-render-diagnostics" "--manifest-path" "/io/Cargo.toml" "--release" "--lib" "--crate-type" "cdylib" "--" "-C" "link-arg=-undefined" "-C" "link-arg=dynamic_lookup" "-C" "link-args=-Wl,-install_name,@rpath/mylib._internal.cpython-312-darwin.so"`