motiejus/hermetic_cc_toolchain
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This commit is contained in:
Adam Bouhenguel 2021-04-09 16:58:05 -07:00
parent 2195fb6941
commit 3de3da1b12
3 changed files with 63 additions and 33 deletions
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11
README.md
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@ -35,3 +35,14 @@ If they *work*, then you'll see the same output as above. If not, you'll see:
will throw and expect to catch an error...
libc++abi: terminating with uncaught exception of type char const*
```
If you want to try the above in a transient docker environment, you can do:
```
$ 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
# export CC=/usr/bin/false
# bazel run --platforms=@com_github_ziglang_zig//:x86_64-linux-gnu.2.28 //test:hello
# bazel run --platforms=@com_github_ziglang_zig//:x86_64-linux-gnu.2.28 //test:exception
```

10
WORKSPACE.bazel
View File

@ -88,12 +88,12 @@ _cc_image_repos()
load("@io_bazel_rules_docker//repositories:deps.bzl", container_deps = "deps")
container_deps()
load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
git_repository(
rules_boost_version = "c13a880269cc044c4b5e90046625339836771d77"
http_archive(
name = "com_github_nelhage_rules_boost",
commit = "c13a880269cc044c4b5e90046625339836771d77",
remote = "https://github.com/nelhage/rules_boost",
shallow_since = "1591047380 -0700",
url = "https://github.com/nelhage/rules_boost/archive/{}.zip".format(rules_boost_version),
strip_prefix = "rules_boost-{}".format(rules_boost_version),
sha256 = "19a51f2f67e6bd2d1655a0641568bd88211db641a77c27fcdab7d9ad6de7dc00",
)
load("@com_github_nelhage_rules_boost//:boost/boost.bzl", "boost_deps")
boost_deps()

75
zig-toolchains/defs.bzl
View File

@ -14,39 +14,57 @@ DEFAULT_TOOL_PATHS = {
}.items()
DEFAULT_INCLUDE_DIRECTORIES = [
"lib/zig/include",
# "lib/zig/libcxx/include",
# "lib/zig/libcxxabi/include",
# "lib/zig/libunwind/include",
"lib/include",
# "lib/libcxx/include",
# "lib/libcxxabi/include",
# "lib/libunwind/include",
]
# https://github.com/ziglang/zig/blob/0cfa39304b18c6a04689bd789f5dc4d035ec43b0/src/main.zig#L2962-L2966
TARGET_CONFIGS = [
struct(
target="x86_64-linux-gnu.2.28",
target="x86_64-macos-gnu",
includes=[
"lib/zig/libcxx/include",
"lib/zig/libcxxabi/include",
"lib/zig/libunwind/include",
"lib/zig/libc/include/generic-glibc",
"lib/zig/libc/include/any-linux-any",
"lib/zig/libc/include/x86_64-linux-gnu",
"lib/zig/libc/include/x86_64-linux-any",
"lib/libcxx/include",
"lib/libcxxabi/include",
"lib/libunwind/include",
# "lib/libc/include/generic-glibc",
# "lib/libc/include/any-linux-any",
# "lib/libc/include/x86_64-linux-gnu",
# "lib/libc/include/x86_64-linux-any",
],
linkopts=["-lc++", "-lc++abi"],
copts=[],
bazel_target_cpu="darwin",
constraint_values=["@platforms//os:macos", "@platforms//cpu:x86_64"],
tool_paths={"ld": "ld64.lld"},
),
struct(
target="x86_64-linux-gnu.2.28",
includes=[
"lib/libcxx/include",
"lib/libcxxabi/include",
"lib/libunwind/include",
"lib/libc/include/generic-glibc",
"lib/libc/include/any-linux-any",
"lib/libc/include/x86_64-linux-gnu",
"lib/libc/include/x86_64-linux-any",
],
linkopts=["-lc++", "-lc++abi"],
copts=[],
bazel_target_cpu="k8",
constraint_values=["@platforms//os:linux", "@platforms//cpu:x86_64"],
tool_paths={"ld": "ld.lld"},
),
# struct(
# target="x86_64-linux-musl",
# includes=[
# "lib/zig/libcxx/include",
# "lib/zig/libcxxabi/include",
# "lib/zig/libc/include/generic-musl",
# "lib/zig/libc/include/any-linux-any",
# "lib/zig/libc/include/x86_64-linux-musl",
# "lib/zig/libc/include/x86_64-linux-any",
# "lib/libcxx/include",
# "lib/libcxxabi/include",
# "lib/libc/include/generic-musl",
# "lib/libc/include/any-linux-any",
# "lib/libc/include/x86_64-linux-musl",
# "lib/libc/include/x86_64-linux-any",
# ],
# linkopts=[],
# # linkopts=["-lc++", "-lc++abi"],
@ -111,7 +129,7 @@ exports_files(glob["**"])
http_archive(
name = "com_github_ziglang_zig_llvm_tools_linux_x86_64",
# sha256 = "",
sha256 = "829f5fb0ebda1d8716464394f97d5475d465ddc7bea2879c0601316b611ff6db",
patch_cmds = llvm_patch_cmds,
build_file_content = llvm_build_file_content,
strip_prefix = "clang+llvm-11.0.0-x86_64-linux-gnu-ubuntu-20.04",
@ -123,7 +141,10 @@ exports_files(glob["**"])
zig_repository(
name = "com_github_ziglang_zig",
version = "0.7.1",
sha256 = "845cb17562978af0cf67e3993f4e33330525eaf01ead9386df9105111e3bc519",
host_platform_sha256 = {
"macos-x86_64": "845cb17562978af0cf67e3993f4e33330525eaf01ead9386df9105111e3bc519",
"linux-x86_64": "18c7b9b200600f8bcde1cd8d7f1f578cbc3676241ce36d771937ce19a8159b8d",
},
)
def register_all_toolchains():
@ -148,12 +169,12 @@ def _zig_repository_impl(repository_ctx):
repository_ctx.download_and_extract(
url = "https://ziglang.org/download/{version}/zig-{host_platform}-{version}.tar.xz".format(**format_vars),
stripPrefix = "zig-{host_platform}-{version}/".format(**format_vars),
sha256 = repository_ctx.attr.sha256,
sha256 = repository_ctx.attr.host_platform_sha256[host_platform],
)
# TODO Use llvm-ar for host platform until we have https://github.com/ziglang/zig/issues/7915
llvm_tools_dir = str(repository_ctx.path("")) + "/../" + llvm_tools_repo + "/llvm-ar"
repository_ctx.symlink(llvm_tools_dir, ZIG_TOOL_PATH.format(zig_tool="llvm-ar"))
llvm_tools_dir = str(repository_ctx.path("")) + "/../" + llvm_tools_repo
repository_ctx.symlink(llvm_tools_dir + "/llvm-ar", ZIG_TOOL_PATH.format(zig_tool="llvm-ar"))
for zig_tool in ZIG_TOOLS:
repository_ctx.file(
@ -171,7 +192,7 @@ zig_repository = repository_rule(
attrs = {
"url": attr.string(),
"version": attr.string(),
"sha256": attr.string(),
"host_platform_sha256": attr.string_dict(),
},
implementation = _zig_repository_impl,
)
@ -226,8 +247,7 @@ def zig_build_macro(absolute_path):
copts = target_config.copts,
linkopts = target_config.linkopts,
target_system_name = "unknown",
# TODO don't hardcode this to k8
target_cpu = "k8",
target_cpu = target_config.bazel_target_cpu,
target_libc = "unknown",
compiler = "clang",
abi_version = "unknown",
@ -251,8 +271,7 @@ def zig_build_macro(absolute_path):
native.cc_toolchain_suite(
name = target + "_cc_toolchain_suite",
toolchains = {
# TODO don't hardcode this to k8
"k8": ":%s_cc_toolchain" % target,
target_config.bazel_target_cpu: ":%s_cc_toolchain" % target,
},
tags = ["manual"]
)