From c33d28f4f9651e62f5ea91f8ebd3f6eaf741e60a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Motiejus=20Jak=C5=A1tys?= Date: Fri, 6 Aug 2021 14:30:25 +0300 Subject: [PATCH] update README --- README.md | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/README.md b/README.md index d182295..6a4a197 100644 --- a/README.md +++ b/README.md @@ -2,27 +2,27 @@ # Bazel zig cc toolchain for Go -This is a prototype zig-cc toolchain that can cross-compile cgo programs to these os/archs: +This is an early stage zig-cc toolchain that can cross-compile cgo programs to these os/archs: - amd64-linux-gnu.2.19 - amd64-linux-musl -- arm64-linux-gnu.2.19 +- arm64-linux-gnu.2.28 - arm64-linux-musl - amd64-macos - arm64-macos -Don't use this yet, see [Known Issues](#known-issues)). +# Usage + +Add this to your `WORKSPACE`: TBD. # Testing ## linux cgo + glibc 2.19 -Glibc toolchain is suffixed with `-gnu`: - ``` -$ bazel run --platforms @zig_sdk//:x86_64-linux-gnu //test:gognu -$ 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 +$ bazel build --platforms @io_bazel_rules_go//go/toolchain:linux_amd64_cgo //test:hello +$ file bazel-out/k8-fastbuild-ST-d17813c235ce/bin/test/hello_/hello +bazel-out/k8-fastbuild-ST-d17813c235ce/bin/test/hello_/hello: 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 ``` ## linux cgo + musl @@ -41,7 +41,7 @@ hello, world ## macos cgo ``` -$ bazel build --platforms @zig_sdk//:x86_64-macos-gnu //test:gognu +$ bazel build --platforms @io_bazel_rules_go//go/toolchain:darwin_amd64_cgo //test:gognu ... $ file bazel-bin/test/gognu_/gognu bazel-bin/test/gognu_/gognu: Mach-O 64-bit x86_64 executable, flags: @@ -60,6 +60,7 @@ how CI does it. # Known Issues +- [ziglang/zig #9485 glibc 2.27 or older: fcntl64 not found, but zig's glibc headers refer it] (https://github.com/ziglang/zig/issues/9485) - [ziglang/zig #9431 FileNotFound when compiling macos](https://github.com/ziglang/zig/issues/9431) - [rules/go #2894 Per-arch_target linker flags](https://github.com/bazelbuild/rules_go/issues/2894)