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hermetic_cc_toolchain/toolchain/private/cc_toolchains.bzl

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2.9 KiB
Python

load(":defs.bzl", "target_structs", "zig_tool_path")
load("@hermetic_cc_toolchain//toolchain:zig_toolchain.bzl", "zig_cc_toolchain_config")
DEFAULT_TOOL_PATHS = {
"ar": "ar",
"gcc": "c++", # https://github.com/bazelbuild/bazel/issues/4644
"cpp": "/usr/bin/false",
"gcov": "/usr/bin/false",
"nm": "/usr/bin/false",
"objdump": "/usr/bin/false",
"strip": "/usr/bin/false",
}.items()
def declare_cc_toolchains(os, zig_sdk_path):
for target_config in target_structs():
gotarget = target_config.gotarget
zigtarget = target_config.zigtarget
cxx_builtin_include_directories = []
absolute_tool_paths = {}
for name, path in target_config.tool_paths.items() + DEFAULT_TOOL_PATHS:
if path[0] == "/":
absolute_tool_paths[name] = path
continue
tool_path = zig_tool_path(os).format(
zig_tool = path,
zigtarget = zigtarget,
)
absolute_tool_paths[name] = tool_path
dynamic_library_linkopts = target_config.dynamic_library_linkopts
copts = target_config.copts
linkopts = []
for s in getattr(target_config, "linker_version_scripts", []):
linkopts = ["-Wl,--version-script,%s/%s" % (zig_sdk_path, s)]
# We can't pass a list of structs to a rule, so we use json encoding.
artifact_name_patterns = getattr(target_config, "artifact_name_patterns", [])
artifact_name_pattern_strings = [json.encode(p) for p in artifact_name_patterns]
zig_cc_toolchain_config(
name = zigtarget + "_cc_config",
target = zigtarget,
tool_paths = absolute_tool_paths,
cxx_builtin_include_directories = cxx_builtin_include_directories,
copts = copts,
linkopts = linkopts,
dynamic_library_linkopts = dynamic_library_linkopts,
target_cpu = target_config.bazel_target_cpu,
target_system_name = "unknown",
target_libc = "unknown",
compiler = "clang",
abi_version = "unknown",
abi_libc_version = "unknown",
artifact_name_patterns = artifact_name_pattern_strings,
visibility = ["//visibility:private"],
)
native.cc_toolchain(
name = zigtarget + "_cc",
toolchain_identifier = zigtarget + "-toolchain",
toolchain_config = ":%s_cc_config" % zigtarget,
all_files = "@zig_sdk//:%s_all_files" % zigtarget,
ar_files = "@zig_sdk//:%s_ar_files" % zigtarget,
compiler_files = "@zig_sdk//:%s_compiler_files" % zigtarget,
linker_files = "@zig_sdk//:%s_linker_files" % zigtarget,
dwp_files = "@zig_sdk//:empty",
objcopy_files = "@zig_sdk//:empty",
strip_files = "@zig_sdk//:empty",
supports_param_files = 0,
visibility = ["//visibility:private"],
)