motiejus/hermetic_cc_toolchain
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Motiejus Jakštys 2021-06-07 23:22:51 +03:00 committed by Motiejus Jakštys
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@ -7,7 +7,7 @@ This is a prototype zig-cc toolchain for cgo programs with:
# Testing
Building a cgo binary with glibc:
## cgo + glibc 2.19
```
$ bazel build //test:gognu
@ -18,7 +18,7 @@ $ file ../bazel-bin/test/gognu_/gognu
../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
```
Build a cgo binary with musl:
## cgo + musl
```
$ bazel build --platforms @com_github_ziglang_zig//:platform_linux-x86_64-musl :gomusl
@ -29,13 +29,12 @@ $ ../bazel-out/k8-fastbuild-ST-d17813c235ce/bin/test/gomusl_/gomusl
hello, world
```
If you want to try the above in a transient docker environment, you can do:
## Transient docker environment
```
$ docker run --rm -it -v $(pwd):/workspace debian:buster-slim
# 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
# cd /workspace
$ docker run -ti --rm -v $(pwd):/x -w /x debian:buster-slim
# apt update && apt install curl ca-certificates -y && curl -L https://github.com/bazelbuild/bazelisk/releases/download/v1.7.5/bazelisk-linux-amd64 > /usr/local/bin/bazel && chmod +x /usr/local/bin/bazel
# export CC=/usr/bin/false
# bazel run --platforms @com_github_ziglang_zig//:platform_linux-x86_64-musl :gomusl
# bazel run --platforms @com_github_ziglang_zig//:platform_linux-x86_64-glibc :gomusl
# bazel run --platforms @com_github_ziglang_zig//:platform_linux-x86_64-musl //test:gomusl
# bazel run --platforms @com_github_ziglang_zig//:platform_linux-x86_64-glibc //test:gognu
```