motiejus/hermetic_cc_toolchain
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Motiejus Jakštys 2021-06-10 13:12:54 +03:00 committed by Motiejus Jakštys
parent 5973131fff
commit dbff5afa75
4 changed files with 63 additions and 59 deletions
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11
WORKSPACE
View File

@ -22,7 +22,6 @@ http_archive(
], ],
) )
load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies") load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies")
load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies") load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
@ -32,6 +31,7 @@ go_register_toolchains(version = "1.16")
gazelle_dependencies(go_repository_default_config = "@//:WORKSPACE") gazelle_dependencies(go_repository_default_config = "@//:WORKSPACE")
# protobuf is required for //:buildifier
http_archive( http_archive(
name = "com_google_protobuf", name = "com_google_protobuf",
sha256 = "bf0e5070b4b99240183b29df78155eee335885e53a8af8683964579c214ad301", sha256 = "bf0e5070b4b99240183b29df78155eee335885e53a8af8683964579c214ad301",
@ -40,6 +40,7 @@ http_archive(
) )
load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps") load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
protobuf_deps() protobuf_deps()
http_archive( http_archive(
@ -48,10 +49,12 @@ http_archive(
url = "https://github.com/bazelbuild/buildtools/archive/master.zip", url = "https://github.com/bazelbuild/buildtools/archive/master.zip",
) )
load("//toolchain:defs.bzl", load(
zig_register_all_toolchains = "register_all_toolchains", "//toolchain:defs.bzl",
zig_toolchain_repositories = "toolchain_repositories", zig_register_all_toolchains = "register_all_toolchains",
zig_toolchain_repositories = "toolchain_repositories",
) )
zig_toolchain_repositories() zig_toolchain_repositories()
zig_register_all_toolchains() zig_register_all_toolchains()

6
toolchain/BUILD.sdk.bazel
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@ -1,10 +1,10 @@
load("@zig-cc-bazel//toolchain:defs.bzl", "zig_build_macro") load("@zig-cc-bazel//toolchain:defs.bzl", "zig_build_macro")
package( package(
default_visibility = ["//visibility:public"] default_visibility = ["//visibility:public"],
) )
zig_build_macro( zig_build_macro(
absolute_path={absolute_path}, absolute_path = {absolute_path},
zig_include_root={zig_include_root}, zig_include_root = {zig_include_root},
) )

90
toolchain/defs.bzl
View File

@ -3,8 +3,7 @@ load(":zig_toolchain.bzl", "zig_cc_toolchain_config")
DEFAULT_TOOL_PATHS = { DEFAULT_TOOL_PATHS = {
"ar": "ar", "ar": "ar",
"gcc": "c++", # https://github.com/bazelbuild/bazel/issues/4644 "gcc": "c++", # https://github.com/bazelbuild/bazel/issues/4644
"cpp": "/usr/bin/false", "cpp": "/usr/bin/false",
"gcov": "/usr/bin/false", "gcov": "/usr/bin/false",
"nm": "/usr/bin/false", "nm": "/usr/bin/false",
@ -21,77 +20,76 @@ DEFAULT_INCLUDE_DIRECTORIES = [
# https://github.com/ziglang/zig/blob/0cfa39304b18c6a04689bd789f5dc4d035ec43b0/src/main.zig#L2962-L2966 # https://github.com/ziglang/zig/blob/0cfa39304b18c6a04689bd789f5dc4d035ec43b0/src/main.zig#L2962-L2966
TARGET_CONFIGS = [ TARGET_CONFIGS = [
struct( struct(
target="x86_64-macos-gnu", target = "x86_64-macos-gnu",
includes=[ includes = [
"libunwind/include", "libunwind/include",
"libc/include/any-macos-any", "libc/include/any-macos-any",
"libc/include/x86_64-macos-any", "libc/include/x86_64-macos-any",
"libc/include/x86_64-macos-gnu", "libc/include/x86_64-macos-gnu",
], ],
# linkopts=["-lc++", "-lc++abi"], # linkopts=["-lc++", "-lc++abi"],
linkopts=[], linkopts = [],
copts=[], copts = [],
bazel_target_cpu="darwin", bazel_target_cpu = "darwin",
constraint_values=[ constraint_values = [
"@platforms//os:macos", "@platforms//os:macos",
"@platforms//cpu:x86_64", "@platforms//cpu:x86_64",
], ],
tool_paths={"ld": "ld64.lld"}, tool_paths = {"ld": "ld64.lld"},
), ),
] + [
struct( struct(
target="x86_64-linux-gnu", target = "x86_64-linux-gnu",
target_suffix = ".2.19", target_suffix = ".2.19",
includes=[ includes = [
"libunwind/include", "libunwind/include",
"libc/include/generic-glibc", "libc/include/generic-glibc",
"libc/include/any-linux-any", "libc/include/any-linux-any",
"libc/include/x86_64-linux-gnu", "libc/include/x86_64-linux-gnu",
"libc/include/x86_64-linux-any", "libc/include/x86_64-linux-any",
], ],
linkopts=["-lc++", "-lc++abi"], linkopts = ["-lc++", "-lc++abi"],
copts=[], copts = [],
bazel_target_cpu="k8", bazel_target_cpu = "k8",
constraint_values=[ constraint_values = [
"@platforms//os:linux", "@platforms//os:linux",
"@platforms//cpu:x86_64", "@platforms//cpu:x86_64",
], ],
tool_paths={"ld": "ld.lld"}, tool_paths = {"ld": "ld.lld"},
), ),
struct( struct(
target="x86_64-linux-musl", target = "x86_64-linux-musl",
includes=[ includes = [
"libc/include/generic-musl", "libc/include/generic-musl",
"libc/include/any-linux-any", "libc/include/any-linux-any",
"libc/include/x86_64-linux-musl", "libc/include/x86_64-linux-musl",
"libc/include/x86_64-linux-any", "libc/include/x86_64-linux-any",
], ],
linkopts=[], linkopts = [],
copts=["-D_LIBCPP_HAS_MUSL_LIBC", "-D_LIBCPP_HAS_THREAD_API_PTHREAD"], copts = ["-D_LIBCPP_HAS_MUSL_LIBC", "-D_LIBCPP_HAS_THREAD_API_PTHREAD"],
bazel_target_cpu="k8", bazel_target_cpu = "k8",
constraint_values=[ constraint_values = [
"@platforms//os:linux", "@platforms//os:linux",
"@platforms//cpu:x86_64", "@platforms//cpu:x86_64",
":musl", ":musl",
], ],
tool_paths={"ld": "ld.lld"}, tool_paths = {"ld": "ld.lld"},
), ),
] ]
def toolchain_repositories(): def toolchain_repositories():
zig_repository( zig_repository(
name = "zig_sdk", name = "zig_sdk",
version = "0.8.0", version = "0.8.0",
url_format = "https://ziglang.org/download/{version}/zig-{host_platform}-{version}.tar.xz", url_format = "https://ziglang.org/download/{version}/zig-{host_platform}-{version}.tar.xz",
host_platform_sha256 = { host_platform_sha256 = {
"linux-x86_64": "502625d3da3ae595c5f44a809a87714320b7a40e6dff4a895b5fa7df3391d01e", "linux-x86_64": "502625d3da3ae595c5f44a809a87714320b7a40e6dff4a895b5fa7df3391d01e",
"macos-x86_64": "279f9360b5cb23103f0395dc4d3d0d30626e699b1b4be55e98fd985b62bc6fbe", "macos-x86_64": "279f9360b5cb23103f0395dc4d3d0d30626e699b1b4be55e98fd985b62bc6fbe",
}, },
host_platform_include_root = { host_platform_include_root = {
"macos-x86_64": "lib/zig/", "macos-x86_64": "lib/zig/",
"linux-x86_64": "lib/", "linux-x86_64": "lib/",
} },
) )
def register_all_toolchains(): def register_all_toolchains():
@ -121,10 +119,10 @@ ZIG_TOOLS = [
"ar", "ar",
# List of ld tools: https://github.com/ziglang/zig/blob/0cfa39304b18c6a04689bd789f5dc4d035ec43b0/src/main.zig#L2962-L2966 # List of ld tools: https://github.com/ziglang/zig/blob/0cfa39304b18c6a04689bd789f5dc4d035ec43b0/src/main.zig#L2962-L2966
# and also: https://github.com/ziglang/zig/issues/3257 # and also: https://github.com/ziglang/zig/issues/3257
"ld.lld", # ELF "ld.lld", # ELF
"ld64.lld", # Mach-O "ld64.lld", # Mach-O
"lld-link", # COFF "lld-link", # COFF
"wasm-ld", # WebAssembly "wasm-ld", # WebAssembly
] ]
def _zig_repository_impl(repository_ctx): def _zig_repository_impl(repository_ctx):
@ -136,8 +134,8 @@ def _zig_repository_impl(repository_ctx):
zig_include_root = repository_ctx.attr.host_platform_include_root[host_platform] zig_include_root = repository_ctx.attr.host_platform_include_root[host_platform]
zig_sha256 = repository_ctx.attr.host_platform_sha256[host_platform] zig_sha256 = repository_ctx.attr.host_platform_sha256[host_platform]
format_vars = { format_vars = {
"version" : repository_ctx.attr.version, "version": repository_ctx.attr.version,
"host_platform" : host_platform, "host_platform": host_platform,
} }
zig_url = repository_ctx.attr.url_format.format(**format_vars) zig_url = repository_ctx.attr.url_format.format(**format_vars)
@ -149,8 +147,8 @@ def _zig_repository_impl(repository_ctx):
for zig_tool in ZIG_TOOLS: for zig_tool in ZIG_TOOLS:
repository_ctx.file( repository_ctx.file(
ZIG_TOOL_PATH.format(zig_tool=zig_tool), ZIG_TOOL_PATH.format(zig_tool = zig_tool),
ZIG_TOOL_WRAPPER.format(zig=str(repository_ctx.path("zig")), zig_tool=zig_tool), ZIG_TOOL_WRAPPER.format(zig = str(repository_ctx.path("zig")), zig_tool = zig_tool),
) )
absolute_path = json.encode(str(repository_ctx.path(""))) absolute_path = json.encode(str(repository_ctx.path("")))
@ -179,9 +177,9 @@ def filegroup(name, **kwargs):
return ":" + name return ":" + name
def zig_build_macro(absolute_path, zig_include_root): def zig_build_macro(absolute_path, zig_include_root):
filegroup(name="empty") filegroup(name = "empty")
filegroup(name="zig_compiler", srcs=["zig"]) filegroup(name = "zig_compiler", srcs = ["zig"])
filegroup(name="lib/std", srcs=native.glob(["lib/std/**"])) filegroup(name = "lib/std", srcs = native.glob(["lib/std/**"]))
native.constraint_setting(name = "libc") native.constraint_setting(name = "libc")
@ -204,12 +202,12 @@ def zig_build_macro(absolute_path, zig_include_root):
linker_srcs = [":zig_compiler"] linker_srcs = [":zig_compiler"]
compiler_srcs = [":zig_compiler"] compiler_srcs = [":zig_compiler"]
tool_srcs = {"gcc": compiler_srcs, "ld": linker_srcs, "ar": ar_srcs} tool_srcs = {"gcc": compiler_srcs, "ld": linker_srcs, "ar": ar_srcs}
cxx_builtin_include_directories = [] cxx_builtin_include_directories = []
for d in DEFAULT_INCLUDE_DIRECTORIES + target_config.includes: for d in DEFAULT_INCLUDE_DIRECTORIES + target_config.includes:
d = zig_include_root + d d = zig_include_root + d
if d not in lazy_filegroups: if d not in lazy_filegroups:
lazy_filegroups[d] = filegroup(name=d, srcs=native.glob([d + "/**"])) lazy_filegroups[d] = filegroup(name = d, srcs = native.glob([d + "/**"]))
compiler_srcs.append(lazy_filegroups[d]) compiler_srcs.append(lazy_filegroups[d])
cxx_builtin_include_directories.append(absolute_path + "/" + d) cxx_builtin_include_directories.append(absolute_path + "/" + d)
@ -218,19 +216,19 @@ def zig_build_macro(absolute_path, zig_include_root):
if path[0] == "/": if path[0] == "/":
absolute_tool_paths[name] = path absolute_tool_paths[name] = path
continue continue
tool_path = ZIG_TOOL_PATH.format(zig_tool=path) tool_path = ZIG_TOOL_PATH.format(zig_tool = path)
absolute_tool_paths[name] = "%s/%s" % (absolute_path, tool_path) absolute_tool_paths[name] = "%s/%s" % (absolute_path, tool_path)
tool_srcs[name].append(tool_path) tool_srcs[name].append(tool_path)
ar_files = filegroup(name=target + "_ar_files", srcs=ar_srcs) ar_files = filegroup(name = target + "_ar_files", srcs = ar_srcs)
linker_files = filegroup(name=target + "_linker_files", srcs=linker_srcs) linker_files = filegroup(name = target + "_linker_files", srcs = linker_srcs)
compiler_files = filegroup(name=target + "_compiler_files", srcs=compiler_srcs) compiler_files = filegroup(name = target + "_compiler_files", srcs = compiler_srcs)
all_files = filegroup(name=target + "_all_files", srcs=all_srcs + [ar_files, linker_files, compiler_files]) all_files = filegroup(name = target + "_all_files", srcs = all_srcs + [ar_files, linker_files, compiler_files])
zig_cc_toolchain_config( zig_cc_toolchain_config(
name = target + "_cc_toolchain_config", name = target + "_cc_toolchain_config",
target = target, target = target,
target_suffix = getattr(target_config, 'target_suffix', ''), target_suffix = getattr(target_config, "target_suffix", ""),
tool_paths = absolute_tool_paths, tool_paths = absolute_tool_paths,
cxx_builtin_include_directories = cxx_builtin_include_directories, cxx_builtin_include_directories = cxx_builtin_include_directories,
copts = target_config.copts, copts = target_config.copts,
@ -262,7 +260,7 @@ def zig_build_macro(absolute_path, zig_include_root):
toolchains = { toolchains = {
target_config.bazel_target_cpu: ":%s_cc_toolchain" % target, target_config.bazel_target_cpu: ":%s_cc_toolchain" % target,
}, },
tags = ["manual"] tags = ["manual"],
) )
native.toolchain( native.toolchain(

15
toolchain/zig_toolchain.bzl
View File

@ -1,10 +1,11 @@
load("@bazel_tools//tools/build_defs/cc:action_names.bzl", "ACTION_NAMES") load("@bazel_tools//tools/build_defs/cc:action_names.bzl", "ACTION_NAMES")
load("@bazel_tools//tools/cpp:cc_toolchain_config_lib.bzl", load(
"@bazel_tools//tools/cpp:cc_toolchain_config_lib.bzl",
"feature", "feature",
"flag_group", "flag_group",
"flag_set", "flag_set",
"tool_path",
"tool", "tool",
"tool_path",
) )
all_link_actions = [ all_link_actions = [
@ -40,7 +41,8 @@ def _zig_cc_toolchain_config_impl(ctx):
"-I" + d "-I" + d
for d in ctx.attr.cxx_builtin_include_directories for d in ctx.attr.cxx_builtin_include_directories
] + [ ] + [
"-target", ctx.attr.target + ctx.attr.target_suffix, "-target",
ctx.attr.target + ctx.attr.target_suffix,
"-no-canonical-prefixes", "-no-canonical-prefixes",
"-Wno-builtin-macro-redefined", "-Wno-builtin-macro-redefined",
"-D__DATE__=\"redacted\"", "-D__DATE__=\"redacted\"",
@ -52,7 +54,7 @@ def _zig_cc_toolchain_config_impl(ctx):
), ),
], ],
) )
default_linker_flags = feature( default_linker_flags = feature(
name = "default_linker_flags", name = "default_linker_flags",
enabled = True, enabled = True,
@ -62,7 +64,8 @@ def _zig_cc_toolchain_config_impl(ctx):
flag_groups = ([ flag_groups = ([
flag_group( flag_group(
flags = [ flags = [
"-target", ctx.attr.target, "-target",
ctx.attr.target,
] + ctx.attr.linkopts, ] + ctx.attr.linkopts,
), ),
]), ]),
@ -87,7 +90,7 @@ def _zig_cc_toolchain_config_impl(ctx):
abi_version = ctx.attr.abi_version, abi_version = ctx.attr.abi_version,
abi_libc_version = ctx.attr.abi_libc_version, abi_libc_version = ctx.attr.abi_libc_version,
tool_paths = [ tool_paths = [
tool_path(name=name, path=path) tool_path(name = name, path = path)
for name, path in ctx.attr.tool_paths.items() for name, path in ctx.attr.tool_paths.items()
], ],
cxx_builtin_include_directories = ctx.attr.cxx_builtin_include_directories, cxx_builtin_include_directories = ctx.attr.cxx_builtin_include_directories,