mirror of
https://github.com/bazelbuild/rules_cc
synced 2024-12-03 02:53:18 +00:00
3eaa3c7f88
They are now part of the bazelbuild/bazel repository. Copies buildifier changes contributed by Keith in https://github.com/bazelbuild/rules_cc/pull/128 RELNOTES:none PiperOrigin-RevId: 435312636 Change-Id: I4d5d2f58d90026c0cdfb5c0a90709de7c28c6ccd
590 lines
22 KiB
Python
590 lines
22 KiB
Python
# pylint: disable=g-bad-file-header
|
|
# Copyright 2016 The Bazel Authors. All rights reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
"""Configuring the C++ toolchain on Unix platforms."""
|
|
|
|
load(
|
|
":lib_cc_configure.bzl",
|
|
"auto_configure_fail",
|
|
"auto_configure_warning",
|
|
"auto_configure_warning_maybe",
|
|
"escape_string",
|
|
"get_env_var",
|
|
"get_starlark_list",
|
|
"resolve_labels",
|
|
"split_escaped",
|
|
"which",
|
|
"write_builtin_include_directory_paths",
|
|
)
|
|
|
|
def _uniq(iterable):
|
|
"""Remove duplicates from a list."""
|
|
|
|
unique_elements = {element: None for element in iterable}
|
|
return unique_elements.keys()
|
|
|
|
def _prepare_include_path(repo_ctx, path):
|
|
"""Resolve and sanitize include path before outputting it into the crosstool.
|
|
|
|
Args:
|
|
repo_ctx: repository_ctx object.
|
|
path: an include path to be sanitized.
|
|
|
|
Returns:
|
|
Sanitized include path that can be written to the crosstoot. Resulting path
|
|
is absolute if it is outside the repository and relative otherwise.
|
|
"""
|
|
|
|
repo_root = str(repo_ctx.path("."))
|
|
|
|
# We're on UNIX, so the path delimiter is '/'.
|
|
repo_root += "/"
|
|
path = str(repo_ctx.path(path))
|
|
if path.startswith(repo_root):
|
|
return escape_string(path[len(repo_root):])
|
|
return escape_string(path)
|
|
|
|
def _find_tool(repository_ctx, tool, overriden_tools):
|
|
"""Find a tool for repository, taking overriden tools into account."""
|
|
if tool in overriden_tools:
|
|
return overriden_tools[tool]
|
|
return which(repository_ctx, tool, "/usr/bin/" + tool)
|
|
|
|
def _get_tool_paths(repository_ctx, overriden_tools):
|
|
"""Compute the %-escaped path to the various tools"""
|
|
return dict({
|
|
k: escape_string(_find_tool(repository_ctx, k, overriden_tools))
|
|
for k in [
|
|
"ar",
|
|
"ld",
|
|
"cpp",
|
|
"gcc",
|
|
"dwp",
|
|
"gcov",
|
|
"nm",
|
|
"objcopy",
|
|
"objdump",
|
|
"strip",
|
|
]
|
|
}.items())
|
|
|
|
def _escaped_cplus_include_paths(repository_ctx):
|
|
"""Use ${CPLUS_INCLUDE_PATH} to compute the %-escaped list of flags for cxxflag."""
|
|
if "CPLUS_INCLUDE_PATH" in repository_ctx.os.environ:
|
|
result = []
|
|
for p in repository_ctx.os.environ["CPLUS_INCLUDE_PATH"].split(":"):
|
|
p = escape_string(str(repository_ctx.path(p))) # Normalize the path
|
|
result.append("-I" + p)
|
|
return result
|
|
else:
|
|
return []
|
|
|
|
_INC_DIR_MARKER_BEGIN = "#include <...>"
|
|
|
|
# OSX add " (framework directory)" at the end of line, strip it.
|
|
_OSX_FRAMEWORK_SUFFIX = " (framework directory)"
|
|
_OSX_FRAMEWORK_SUFFIX_LEN = len(_OSX_FRAMEWORK_SUFFIX)
|
|
|
|
def _cxx_inc_convert(path):
|
|
"""Convert path returned by cc -E xc++ in a complete path. Doesn't %-escape the path!"""
|
|
path = path.strip()
|
|
if path.endswith(_OSX_FRAMEWORK_SUFFIX):
|
|
path = path[:-_OSX_FRAMEWORK_SUFFIX_LEN].strip()
|
|
return path
|
|
|
|
def get_escaped_cxx_inc_directories(repository_ctx, cc, lang_flag, additional_flags = []):
|
|
"""Compute the list of default %-escaped C++ include directories.
|
|
|
|
Args:
|
|
repository_ctx: The repository context.
|
|
cc: path to the C compiler.
|
|
lang_flag: value for the language flag (c, c++).
|
|
additional_flags: additional flags to pass to cc.
|
|
Returns:
|
|
a list of escaped system include directories.
|
|
"""
|
|
result = repository_ctx.execute([cc, "-E", lang_flag, "-", "-v"] + additional_flags)
|
|
index1 = result.stderr.find(_INC_DIR_MARKER_BEGIN)
|
|
if index1 == -1:
|
|
return []
|
|
index1 = result.stderr.find("\n", index1)
|
|
if index1 == -1:
|
|
return []
|
|
index2 = result.stderr.rfind("\n ")
|
|
if index2 == -1 or index2 < index1:
|
|
return []
|
|
index2 = result.stderr.find("\n", index2 + 1)
|
|
if index2 == -1:
|
|
inc_dirs = result.stderr[index1 + 1:]
|
|
else:
|
|
inc_dirs = result.stderr[index1 + 1:index2].strip()
|
|
|
|
inc_directories = [
|
|
_prepare_include_path(repository_ctx, _cxx_inc_convert(p))
|
|
for p in inc_dirs.split("\n")
|
|
]
|
|
|
|
if _is_compiler_option_supported(repository_ctx, cc, "-print-resource-dir"):
|
|
resource_dir = repository_ctx.execute(
|
|
[cc, "-print-resource-dir"],
|
|
).stdout.strip() + "/share"
|
|
inc_directories.append(_prepare_include_path(repository_ctx, resource_dir))
|
|
|
|
return inc_directories
|
|
|
|
def _is_compiler_option_supported(repository_ctx, cc, option):
|
|
"""Checks that `option` is supported by the C compiler. Doesn't %-escape the option."""
|
|
result = repository_ctx.execute([
|
|
cc,
|
|
option,
|
|
"-o",
|
|
"/dev/null",
|
|
"-c",
|
|
str(repository_ctx.path("tools/cpp/empty.cc")),
|
|
])
|
|
return result.stderr.find(option) == -1
|
|
|
|
def _is_linker_option_supported(repository_ctx, cc, option, pattern):
|
|
"""Checks that `option` is supported by the C linker. Doesn't %-escape the option."""
|
|
result = repository_ctx.execute([
|
|
cc,
|
|
option,
|
|
"-o",
|
|
"/dev/null",
|
|
str(repository_ctx.path("tools/cpp/empty.cc")),
|
|
])
|
|
return result.stderr.find(pattern) == -1
|
|
|
|
def _find_gold_linker_path(repository_ctx, cc):
|
|
"""Checks if `gold` is supported by the C compiler.
|
|
|
|
Args:
|
|
repository_ctx: repository_ctx.
|
|
cc: path to the C compiler.
|
|
|
|
Returns:
|
|
String to put as value to -fuse-ld= flag, or None if gold couldn't be found.
|
|
"""
|
|
result = repository_ctx.execute([
|
|
cc,
|
|
str(repository_ctx.path("tools/cpp/empty.cc")),
|
|
"-o",
|
|
"/dev/null",
|
|
# Some macos clang versions don't fail when setting -fuse-ld=gold, adding
|
|
# these lines to force it to. This also means that we will not detect
|
|
# gold when only a very old (year 2010 and older) is present.
|
|
"-Wl,--start-lib",
|
|
"-Wl,--end-lib",
|
|
"-fuse-ld=gold",
|
|
"-v",
|
|
])
|
|
if result.return_code != 0:
|
|
return None
|
|
|
|
for line in result.stderr.splitlines():
|
|
if line.find("gold") == -1:
|
|
continue
|
|
for flag in line.split(" "):
|
|
if flag.find("gold") == -1:
|
|
continue
|
|
if flag.find("--enable-gold") > -1 or flag.find("--with-plugin-ld") > -1:
|
|
# skip build configuration options of gcc itself
|
|
# TODO(hlopko): Add redhat-like worker on the CI (#9392)
|
|
continue
|
|
|
|
# flag is '-fuse-ld=gold' for GCC or "/usr/lib/ld.gold" for Clang
|
|
# strip space, single quote, and double quotes
|
|
flag = flag.strip(" \"'")
|
|
|
|
# remove -fuse-ld= from GCC output so we have only the flag value part
|
|
flag = flag.replace("-fuse-ld=", "")
|
|
return flag
|
|
auto_configure_warning(
|
|
"CC with -fuse-ld=gold returned 0, but its -v output " +
|
|
"didn't contain 'gold', falling back to the default linker.",
|
|
)
|
|
return None
|
|
|
|
def _add_compiler_option_if_supported(repository_ctx, cc, option):
|
|
"""Returns `[option]` if supported, `[]` otherwise. Doesn't %-escape the option."""
|
|
return [option] if _is_compiler_option_supported(repository_ctx, cc, option) else []
|
|
|
|
def _add_linker_option_if_supported(repository_ctx, cc, option, pattern):
|
|
"""Returns `[option]` if supported, `[]` otherwise. Doesn't %-escape the option."""
|
|
return [option] if _is_linker_option_supported(repository_ctx, cc, option, pattern) else []
|
|
|
|
def _get_no_canonical_prefixes_opt(repository_ctx, cc):
|
|
# If the compiler sometimes rewrites paths in the .d files without symlinks
|
|
# (ie when they're shorter), it confuses Bazel's logic for verifying all
|
|
# #included header files are listed as inputs to the action.
|
|
|
|
# The '-fno-canonical-system-headers' should be enough, but clang does not
|
|
# support it, so we also try '-no-canonical-prefixes' if first option does
|
|
# not work.
|
|
opt = _add_compiler_option_if_supported(
|
|
repository_ctx,
|
|
cc,
|
|
"-fno-canonical-system-headers",
|
|
)
|
|
if len(opt) == 0:
|
|
return _add_compiler_option_if_supported(
|
|
repository_ctx,
|
|
cc,
|
|
"-no-canonical-prefixes",
|
|
)
|
|
return opt
|
|
|
|
def get_env(repository_ctx):
|
|
"""Convert the environment in a list of export if in Homebrew. Doesn't %-escape the result!
|
|
|
|
Args:
|
|
repository_ctx: The repository context.
|
|
Returns:
|
|
empty string or a list of exports in case we're running with homebrew. Don't ask me why.
|
|
"""
|
|
env = repository_ctx.os.environ
|
|
if "HOMEBREW_RUBY_PATH" in env:
|
|
return "\n".join([
|
|
"export %s='%s'" % (k, env[k].replace("'", "'\\''"))
|
|
for k in env
|
|
if k != "_" and k.find(".") == -1
|
|
])
|
|
else:
|
|
return ""
|
|
|
|
def _coverage_flags(repository_ctx, darwin):
|
|
use_llvm_cov = "1" == get_env_var(
|
|
repository_ctx,
|
|
"BAZEL_USE_LLVM_NATIVE_COVERAGE",
|
|
default = "0",
|
|
enable_warning = False,
|
|
)
|
|
if darwin or use_llvm_cov:
|
|
compile_flags = '"-fprofile-instr-generate", "-fcoverage-mapping"'
|
|
link_flags = '"-fprofile-instr-generate"'
|
|
else:
|
|
# gcc requires --coverage being passed for compilation and linking
|
|
# https://gcc.gnu.org/onlinedocs/gcc/Instrumentation-Options.html#Instrumentation-Options
|
|
compile_flags = '"--coverage"'
|
|
link_flags = '"--coverage"'
|
|
return compile_flags, link_flags
|
|
|
|
def _find_generic(repository_ctx, name, env_name, overriden_tools, warn = False, silent = False):
|
|
"""Find a generic C++ toolchain tool. Doesn't %-escape the result."""
|
|
|
|
if name in overriden_tools:
|
|
return overriden_tools[name]
|
|
|
|
result = name
|
|
env_value = repository_ctx.os.environ.get(env_name)
|
|
env_value_with_paren = ""
|
|
if env_value != None:
|
|
env_value = env_value.strip()
|
|
if env_value:
|
|
result = env_value
|
|
env_value_with_paren = " (%s)" % env_value
|
|
if result.startswith("/"):
|
|
# Absolute path, maybe we should make this suported by our which function.
|
|
return result
|
|
result = repository_ctx.which(result)
|
|
if result == None:
|
|
msg = ("Cannot find %s or %s%s; either correct your path or set the %s" +
|
|
" environment variable") % (name, env_name, env_value_with_paren, env_name)
|
|
if warn:
|
|
if not silent:
|
|
auto_configure_warning(msg)
|
|
else:
|
|
auto_configure_fail(msg)
|
|
return result
|
|
|
|
def find_cc(repository_ctx, overriden_tools):
|
|
return _find_generic(repository_ctx, "gcc", "CC", overriden_tools)
|
|
|
|
def configure_unix_toolchain(repository_ctx, cpu_value, overriden_tools):
|
|
"""Configure C++ toolchain on Unix platforms.
|
|
|
|
Args:
|
|
repository_ctx: The repository context.
|
|
cpu_value: current cpu name.
|
|
overriden_tools: overriden tools.
|
|
"""
|
|
paths = resolve_labels(repository_ctx, [
|
|
"@rules_cc//cc/private/toolchain:BUILD.tpl",
|
|
"@rules_cc//cc/private/toolchain:armeabi_cc_toolchain_config.bzl",
|
|
"@rules_cc//cc/private/toolchain:unix_cc_toolchain_config.bzl",
|
|
"@rules_cc//cc/private/toolchain:linux_cc_wrapper.sh.tpl",
|
|
"@rules_cc//cc/private/toolchain:osx_cc_wrapper.sh.tpl",
|
|
])
|
|
|
|
repository_ctx.symlink(
|
|
paths["@rules_cc//cc/private/toolchain:unix_cc_toolchain_config.bzl"],
|
|
"cc_toolchain_config.bzl",
|
|
)
|
|
|
|
repository_ctx.symlink(
|
|
paths["@rules_cc//cc/private/toolchain:armeabi_cc_toolchain_config.bzl"],
|
|
"armeabi_cc_toolchain_config.bzl",
|
|
)
|
|
|
|
repository_ctx.file("tools/cpp/empty.cc", "int main() {}")
|
|
darwin = cpu_value == "darwin"
|
|
|
|
cc = _find_generic(repository_ctx, "gcc", "CC", overriden_tools)
|
|
overriden_tools = dict(overriden_tools)
|
|
overriden_tools["gcc"] = cc
|
|
overriden_tools["gcov"] = _find_generic(
|
|
repository_ctx,
|
|
"gcov",
|
|
"GCOV",
|
|
overriden_tools,
|
|
warn = True,
|
|
silent = True,
|
|
)
|
|
if darwin:
|
|
overriden_tools["gcc"] = "cc_wrapper.sh"
|
|
overriden_tools["ar"] = "/usr/bin/libtool"
|
|
auto_configure_warning_maybe(repository_ctx, "CC used: " + str(cc))
|
|
tool_paths = _get_tool_paths(repository_ctx, overriden_tools)
|
|
cc_toolchain_identifier = escape_string(get_env_var(
|
|
repository_ctx,
|
|
"CC_TOOLCHAIN_NAME",
|
|
"local",
|
|
False,
|
|
))
|
|
|
|
cc_wrapper_src = (
|
|
"@rules_cc//cc/private/toolchain:osx_cc_wrapper.sh.tpl" if darwin else "@rules_cc//cc/private/toolchain:linux_cc_wrapper.sh.tpl"
|
|
)
|
|
repository_ctx.template(
|
|
"cc_wrapper.sh",
|
|
paths[cc_wrapper_src],
|
|
{
|
|
"%{cc}": escape_string(str(cc)),
|
|
"%{env}": escape_string(get_env(repository_ctx)),
|
|
},
|
|
)
|
|
|
|
cxx_opts = split_escaped(get_env_var(
|
|
repository_ctx,
|
|
"BAZEL_CXXOPTS",
|
|
"-std=c++0x",
|
|
False,
|
|
), ":")
|
|
|
|
bazel_linkopts = "-lstdc++:-lm"
|
|
bazel_linklibs = ""
|
|
if hasattr(repository_ctx, "flag_enabled") and repository_ctx.flag_enabled("incompatible_linkopts_to_linklibs"):
|
|
bazel_linkopts, bazel_linklibs = bazel_linklibs, bazel_linkopts
|
|
link_opts = split_escaped(get_env_var(
|
|
repository_ctx,
|
|
"BAZEL_LINKOPTS",
|
|
bazel_linkopts,
|
|
False,
|
|
), ":")
|
|
link_libs = split_escaped(get_env_var(
|
|
repository_ctx,
|
|
"BAZEL_LINKLIBS",
|
|
bazel_linklibs,
|
|
False,
|
|
), ":")
|
|
gold_linker_path = _find_gold_linker_path(repository_ctx, cc)
|
|
cc_path = repository_ctx.path(cc)
|
|
if not str(cc_path).startswith(str(repository_ctx.path(".")) + "/"):
|
|
# cc is outside the repository, set -B
|
|
bin_search_flag = ["-B" + escape_string(str(cc_path.dirname))]
|
|
else:
|
|
# cc is inside the repository, don't set -B.
|
|
bin_search_flag = []
|
|
|
|
coverage_compile_flags, coverage_link_flags = _coverage_flags(repository_ctx, darwin)
|
|
builtin_include_directories = _uniq(
|
|
get_escaped_cxx_inc_directories(repository_ctx, cc, "-xc") +
|
|
get_escaped_cxx_inc_directories(repository_ctx, cc, "-xc++", cxx_opts) +
|
|
get_escaped_cxx_inc_directories(
|
|
repository_ctx,
|
|
cc,
|
|
"-xc",
|
|
_get_no_canonical_prefixes_opt(repository_ctx, cc),
|
|
) +
|
|
get_escaped_cxx_inc_directories(
|
|
repository_ctx,
|
|
cc,
|
|
"-xc++",
|
|
cxx_opts + _get_no_canonical_prefixes_opt(repository_ctx, cc),
|
|
),
|
|
)
|
|
|
|
write_builtin_include_directory_paths(repository_ctx, cc, builtin_include_directories)
|
|
repository_ctx.template(
|
|
"BUILD",
|
|
paths["@rules_cc//cc/private/toolchain:BUILD.tpl"],
|
|
{
|
|
"%{abi_libc_version}": escape_string(get_env_var(
|
|
repository_ctx,
|
|
"ABI_LIBC_VERSION",
|
|
"local",
|
|
False,
|
|
)),
|
|
"%{abi_version}": escape_string(get_env_var(
|
|
repository_ctx,
|
|
"ABI_VERSION",
|
|
"local",
|
|
False,
|
|
)),
|
|
"%{cc_compiler_deps}": get_starlark_list([":builtin_include_directory_paths"] + (
|
|
[":cc_wrapper"] if darwin else []
|
|
)),
|
|
"%{cc_toolchain_identifier}": cc_toolchain_identifier,
|
|
"%{compile_flags}": get_starlark_list(
|
|
[
|
|
# Security hardening requires optimization.
|
|
# We need to undef it as some distributions now have it enabled by default.
|
|
"-U_FORTIFY_SOURCE",
|
|
"-fstack-protector",
|
|
# All warnings are enabled. Maybe enable -Werror as well?
|
|
"-Wall",
|
|
# Enable a few more warnings that aren't part of -Wall.
|
|
] + (
|
|
_add_compiler_option_if_supported(repository_ctx, cc, "-Wthread-safety") +
|
|
_add_compiler_option_if_supported(repository_ctx, cc, "-Wself-assign")
|
|
) + (
|
|
# Disable problematic warnings.
|
|
_add_compiler_option_if_supported(repository_ctx, cc, "-Wunused-but-set-parameter") +
|
|
# has false positives
|
|
_add_compiler_option_if_supported(repository_ctx, cc, "-Wno-free-nonheap-object") +
|
|
# Enable coloring even if there's no attached terminal. Bazel removes the
|
|
# escape sequences if --nocolor is specified.
|
|
_add_compiler_option_if_supported(repository_ctx, cc, "-fcolor-diagnostics")
|
|
) + [
|
|
# Keep stack frames for debugging, even in opt mode.
|
|
"-fno-omit-frame-pointer",
|
|
],
|
|
),
|
|
"%{compiler}": escape_string(get_env_var(
|
|
repository_ctx,
|
|
"BAZEL_COMPILER",
|
|
"compiler",
|
|
False,
|
|
)),
|
|
"%{coverage_compile_flags}": coverage_compile_flags,
|
|
"%{coverage_link_flags}": coverage_link_flags,
|
|
"%{cxx_builtin_include_directories}": get_starlark_list(builtin_include_directories),
|
|
"%{cxx_flags}": get_starlark_list(cxx_opts + _escaped_cplus_include_paths(repository_ctx)),
|
|
"%{dbg_compile_flags}": get_starlark_list(["-g"]),
|
|
"%{host_system_name}": escape_string(get_env_var(
|
|
repository_ctx,
|
|
"BAZEL_HOST_SYSTEM",
|
|
"local",
|
|
False,
|
|
)),
|
|
"%{link_flags}": get_starlark_list((
|
|
["-fuse-ld=" + gold_linker_path] if gold_linker_path else []
|
|
) + _add_linker_option_if_supported(
|
|
repository_ctx,
|
|
cc,
|
|
"-Wl,-no-as-needed",
|
|
"-no-as-needed",
|
|
) + _add_linker_option_if_supported(
|
|
repository_ctx,
|
|
cc,
|
|
"-Wl,-z,relro,-z,now",
|
|
"-z",
|
|
) + (
|
|
[
|
|
"-undefined",
|
|
"dynamic_lookup",
|
|
"-headerpad_max_install_names",
|
|
] if darwin else bin_search_flag + [
|
|
# Gold linker only? Can we enable this by default?
|
|
# "-Wl,--warn-execstack",
|
|
# "-Wl,--detect-odr-violations"
|
|
] + _add_compiler_option_if_supported(
|
|
# Have gcc return the exit code from ld.
|
|
repository_ctx,
|
|
cc,
|
|
"-pass-exit-codes",
|
|
)
|
|
) + link_opts),
|
|
"%{link_libs}": get_starlark_list(link_libs),
|
|
"%{name}": cpu_value,
|
|
"%{opt_compile_flags}": get_starlark_list(
|
|
[
|
|
# No debug symbols.
|
|
# Maybe we should enable https://gcc.gnu.org/wiki/DebugFission for opt or
|
|
# even generally? However, that can't happen here, as it requires special
|
|
# handling in Bazel.
|
|
"-g0",
|
|
|
|
# Conservative choice for -O
|
|
# -O3 can increase binary size and even slow down the resulting binaries.
|
|
# Profile first and / or use FDO if you need better performance than this.
|
|
"-O2",
|
|
|
|
# Security hardening on by default.
|
|
# Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
|
|
"-D_FORTIFY_SOURCE=1",
|
|
|
|
# Disable assertions
|
|
"-DNDEBUG",
|
|
|
|
# Removal of unused code and data at link time (can this increase binary
|
|
# size in some cases?).
|
|
"-ffunction-sections",
|
|
"-fdata-sections",
|
|
],
|
|
),
|
|
"%{opt_link_flags}": get_starlark_list(
|
|
[] if darwin else _add_linker_option_if_supported(
|
|
repository_ctx,
|
|
cc,
|
|
"-Wl,--gc-sections",
|
|
"-gc-sections",
|
|
),
|
|
),
|
|
"%{supports_param_files}": "0" if darwin else "1",
|
|
"%{supports_start_end_lib}": "True" if gold_linker_path else "False",
|
|
"%{target_cpu}": escape_string(get_env_var(
|
|
repository_ctx,
|
|
"BAZEL_TARGET_CPU",
|
|
cpu_value,
|
|
False,
|
|
)),
|
|
"%{target_libc}": "macosx" if darwin else escape_string(get_env_var(
|
|
repository_ctx,
|
|
"BAZEL_TARGET_LIBC",
|
|
"local",
|
|
False,
|
|
)),
|
|
"%{target_system_name}": escape_string(get_env_var(
|
|
repository_ctx,
|
|
"BAZEL_TARGET_SYSTEM",
|
|
"local",
|
|
False,
|
|
)),
|
|
"%{tool_paths}": ",\n ".join(
|
|
['"%s": "%s"' % (k, v) for k, v in tool_paths.items()],
|
|
),
|
|
"%{unfiltered_compile_flags}": get_starlark_list(
|
|
_get_no_canonical_prefixes_opt(repository_ctx, cc) + [
|
|
# Make C++ compilation deterministic. Use linkstamping instead of these
|
|
# compiler symbols.
|
|
"-Wno-builtin-macro-redefined",
|
|
"-D__DATE__=\\\"redacted\\\"",
|
|
"-D__TIMESTAMP__=\\\"redacted\\\"",
|
|
"-D__TIME__=\\\"redacted\\\"",
|
|
],
|
|
),
|
|
},
|
|
)
|