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# Copyright 2019 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.
"""A Starlark cc_toolchain configuration rule for FreeBSD and OpenBSD."""
load(
"@bazel_tools//tools/cpp:cc_toolchain_config_lib.bzl",
"action_config",
"feature",
"flag_group",
"flag_set",
"tool",
"tool_path",
"with_feature_set",
)
load("@bazel_tools//tools/build_defs/cc:action_names.bzl", "ACTION_NAMES")
all_compile_actions = [
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.clif_match,
ACTION_NAMES.lto_backend,
]
all_cpp_compile_actions = [
ACTION_NAMES.cpp_compile,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.clif_match,
]
all_link_actions = [
ACTION_NAMES.cpp_link_executable,
ACTION_NAMES.cpp_link_dynamic_library,
ACTION_NAMES.cpp_link_nodeps_dynamic_library,
]
def _impl(ctx):
cpu = ctx.attr.cpu
is_bsd = cpu == "freebsd" or cpu == "openbsd"
compiler = "compiler"
toolchain_identifier = "local_{}".format(cpu) if is_bsd else "stub_armeabi-v7a"
host_system_name = "local" if is_bsd else "armeabi-v7a"
target_system_name = "local" if is_bsd else "armeabi-v7a"
target_libc = "local" if is_bsd else "armeabi-v7a"
abi_version = "local" if is_bsd else "armeabi-v7a"
abi_libc_version = "local" if is_bsd else "armeabi-v7a"
objcopy_embed_data_action = action_config(
action_name = "objcopy_embed_data",
enabled = True,
tools = [tool(path = "/usr/bin/objcopy")],
)
action_configs = [objcopy_embed_data_action] if is_bsd else []
default_link_flags_feature = feature(
name = "default_link_flags",
enabled = True,
flag_sets = [
flag_set(
actions = all_link_actions,
flag_groups = [
flag_group(
flags = [
"-lstdc++",
"-Wl,-z,relro,-z,now",
"-no-canonical-prefixes",
],
),
],
),
flag_set(
actions = all_link_actions,
flag_groups = [flag_group(flags = ["-Wl,--gc-sections"])],
with_features = [with_feature_set(features = ["opt"])],
),
],
)
unfiltered_compile_flags_feature = feature(
name = "unfiltered_compile_flags",
enabled = True,
flag_sets = [
flag_set(
actions = all_compile_actions,
flag_groups = [
flag_group(
flags = [
"-no-canonical-prefixes",
"-Wno-builtin-macro-redefined",
"-D__DATE__=\"redacted\"",
"-D__TIMESTAMP__=\"redacted\"",
"-D__TIME__=\"redacted\"",
],
),
],
),
],
)
supports_pic_feature = feature(name = "supports_pic", enabled = True)
default_compile_flags_feature = feature(
name = "default_compile_flags",
enabled = True,
flag_sets = [
flag_set(
actions = all_compile_actions,
flag_groups = [
flag_group(
flags = [
"-U_FORTIFY_SOURCE",
"-D_FORTIFY_SOURCE=1",
"-fstack-protector",
"-Wall",
"-fno-omit-frame-pointer",
],
),
],
),
flag_set(
actions = all_compile_actions,
flag_groups = [flag_group(flags = ["-g"])],
with_features = [with_feature_set(features = ["dbg"])],
),
flag_set(
actions = all_compile_actions,
flag_groups = [
flag_group(
flags = [
"-g0",
"-O2",
"-DNDEBUG",
"-ffunction-sections",
"-fdata-sections",
],
),
],
with_features = [with_feature_set(features = ["opt"])],
),
flag_set(
actions = all_cpp_compile_actions + [ACTION_NAMES.lto_backend],
flag_groups = [flag_group(flags = ["-std=c++0x"])],
),
],
)
opt_feature = feature(name = "opt")
supports_dynamic_linker_feature = feature(name = "supports_dynamic_linker", enabled = True)
objcopy_embed_flags_feature = feature(
name = "objcopy_embed_flags",
enabled = True,
flag_sets = [
flag_set(
actions = ["objcopy_embed_data"],
flag_groups = [flag_group(flags = ["-I", "binary"])],
),
],
)
dbg_feature = feature(name = "dbg")
user_compile_flags_feature = feature(
name = "user_compile_flags",
enabled = True,
flag_sets = [
flag_set(
actions = all_compile_actions,
flag_groups = [
flag_group(
flags = ["%{user_compile_flags}"],
iterate_over = "user_compile_flags",
expand_if_available = "user_compile_flags",
),
],
),
],
)
sysroot_feature = feature(
name = "sysroot",
enabled = True,
flag_sets = [
flag_set(
actions = [
ACTION_NAMES.c_compile,
ACTION_NAMES.cpp_compile,
ACTION_NAMES.linkstamp_compile,
ACTION_NAMES.preprocess_assemble,
ACTION_NAMES.cpp_header_parsing,
ACTION_NAMES.cpp_module_compile,
ACTION_NAMES.cpp_module_codegen,
ACTION_NAMES.clif_match,
ACTION_NAMES.lto_backend,
] + all_link_actions,
flag_groups = [
flag_group(
flags = ["--sysroot=%{sysroot}"],
expand_if_available = "sysroot",
),
],
),
],
)
if is_bsd:
features = [
default_compile_flags_feature,
default_link_flags_feature,
supports_dynamic_linker_feature,
supports_pic_feature,
objcopy_embed_flags_feature,
opt_feature,
dbg_feature,
user_compile_flags_feature,
sysroot_feature,
unfiltered_compile_flags_feature,
]
else:
features = [supports_dynamic_linker_feature, supports_pic_feature]
if (is_bsd):
cxx_builtin_include_directories = ["/usr/lib/clang", "/usr/local/include", "/usr/include"]
else:
cxx_builtin_include_directories = []
if is_bsd:
tool_paths = [
tool_path(name = "ar", path = "/usr/bin/ar"),
tool_path(name = "cpp", path = "/usr/bin/cpp"),
tool_path(name = "dwp", path = "/usr/bin/dwp"),
tool_path(name = "gcc", path = "/usr/bin/clang"),
tool_path(name = "gcov", path = "/usr/bin/gcov"),
tool_path(name = "ld", path = "/usr/bin/ld"),
tool_path(name = "nm", path = "/usr/bin/nm"),
tool_path(name = "objcopy", path = "/usr/bin/objcopy"),
tool_path(name = "objdump", path = "/usr/bin/objdump"),
tool_path(name = "strip", path = "/usr/bin/strip"),
]
else:
tool_paths = [
tool_path(name = "ar", path = "/bin/false"),
tool_path(name = "cpp", path = "/bin/false"),
tool_path(name = "dwp", path = "/bin/false"),
tool_path(name = "gcc", path = "/bin/false"),
tool_path(name = "gcov", path = "/bin/false"),
tool_path(name = "ld", path = "/bin/false"),
tool_path(name = "nm", path = "/bin/false"),
tool_path(name = "objcopy", path = "/bin/false"),
tool_path(name = "objdump", path = "/bin/false"),
tool_path(name = "strip", path = "/bin/false"),
]
out = ctx.actions.declare_file(ctx.label.name)
ctx.actions.write(out, "Fake executable")
return [
cc_common.create_cc_toolchain_config_info(
ctx = ctx,
features = features,
action_configs = action_configs,
cxx_builtin_include_directories = cxx_builtin_include_directories,
toolchain_identifier = toolchain_identifier,
host_system_name = host_system_name,
target_system_name = target_system_name,
target_cpu = cpu,
target_libc = target_libc,
compiler = compiler,
abi_version = abi_version,
abi_libc_version = abi_libc_version,
tool_paths = tool_paths,
),
DefaultInfo(
executable = out,
),
]
cc_toolchain_config = rule(
implementation = _impl,
attrs = {
"cpu": attr.string(mandatory = True),
},
provides = [CcToolchainConfigInfo],
executable = True,
)