42 lines
1.5 KiB
Markdown
42 lines
1.5 KiB
Markdown
# Bazel zig cc toolchain for Go
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This is a prototype zig-cc toolchain for cgo programs with:
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- glibc 2.19
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- musl.
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# Testing
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Building a cgo binary with glibc:
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```
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$ bazel build //test:gognu
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...
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$ ../bazel-bin/test/gognu_/gognu
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hello, world
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$ file ../bazel-bin/test/gognu_/gognu
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../bazel-bin/test/gognu_/gognu: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.0.0, Go BuildID=redacted, with debug_info, not stripped
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```
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Build a cgo binary with musl:
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```
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$ bazel build --platforms @com_github_ziglang_zig//:platform_linux-x86_64-musl :gomusl
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...
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$ file ../bazel-out/k8-fastbuild-ST-d17813c235ce/bin/test/gomusl_/gomusl
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../bazel-out/k8-fastbuild-ST-d17813c235ce/bin/test/gomusl_/gomusl: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, Go BuildID=redacted, with debug_info, not stripped
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$ ../bazel-out/k8-fastbuild-ST-d17813c235ce/bin/test/gomusl_/gomusl
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hello, world
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```
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If you want to try the above in a transient docker environment, you can do:
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```
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$ docker run --rm -it -v $(pwd):/workspace debian:buster-slim
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# apt update && apt install curl ca-certificates --no-install-recommends -y && curl -L https://github.com/bazelbuild/bazelisk/releases/download/v1.7.5/bazelisk-linux-amd64 > /usr/bin/bazel && chmod +x /usr/bin/bazel
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# cd /workspace
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# export CC=/usr/bin/false
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# bazel run --platforms @com_github_ziglang_zig//:platform_linux-x86_64-musl :gomusl
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# bazel run --platforms @com_github_ziglang_zig//:platform_linux-x86_64-glibc :gomusl
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```
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