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# Copyright 2023 The Pigweed Authors
#
# 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
#
# https://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.
"""Private utilities and global variables."""
load("@bazel_tools//tools/build_defs/cc:action_names.bzl", "ACTION_NAMES")
load(
"@bazel_tools//tools/cpp:cc_toolchain_config_lib.bzl",
"FlagSetInfo",
)
load(
"//cc_toolchain/private:providers.bzl",
"ToolchainFeatureInfo",
)
# A potentially more complete set of these constants are available at
# @rules_cc//cc:action_names.bzl, but it's not clear if they should be depended
# on.
ALL_ASM_ACTIONS = [
ACTION_NAMES.assemble,
ACTION_NAMES.preprocess_assemble,
]
ALL_C_COMPILER_ACTIONS = [
ACTION_NAMES.c_compile,
ACTION_NAMES.cc_flags_make_variable,
]
ALL_CPP_COMPILER_ACTIONS = [
ACTION_NAMES.cpp_compile,
ACTION_NAMES.cpp_header_parsing,
]
ALL_LINK_ACTIONS = [
ACTION_NAMES.cpp_link_executable,
ACTION_NAMES.cpp_link_dynamic_library,
ACTION_NAMES.cpp_link_nodeps_dynamic_library,
]
ALL_AR_ACTIONS = [
ACTION_NAMES.cpp_link_static_library,
]
ACTION_MAP = {
"aropts": ALL_AR_ACTIONS,
"asmopts": ALL_ASM_ACTIONS,
"copts": ALL_C_COMPILER_ACTIONS + ALL_CPP_COMPILER_ACTIONS,
"conlyopts": ALL_C_COMPILER_ACTIONS,
"cxxopts": ALL_CPP_COMPILER_ACTIONS,
"linkopts": ALL_LINK_ACTIONS,
}
def _check_dep_provides(ctx_label, dep, provider, what_provides):
if provider not in dep:
fail(
"{} listed as a dependency of {}, but it's not a {}".format(
dep.label,
ctx_label,
what_provides,
),
)
def check_deps(ctx):
for dep in ctx.attr.feature_deps:
_check_dep_provides(ctx.label, dep, ToolchainFeatureInfo, "pw_cc_toolchain_feature")
for dep in ctx.attr.action_config_flag_sets:
_check_dep_provides(ctx.label, dep, FlagSetInfo, "pw_cc_flag_set")
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