You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
120 lines
3.3 KiB
120 lines
3.3 KiB
# Copyright 2019 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.
|
|
|
|
"""Pigweed build environment for bazel."""
|
|
|
|
DEBUGGING = [
|
|
"-g",
|
|
]
|
|
|
|
# Standard compiler flags to reduce output binary size.
|
|
REDUCED_SIZE_COPTS = [
|
|
"-fno-common",
|
|
"-fno-exceptions",
|
|
"-ffunction-sections",
|
|
"-fdata-sections",
|
|
]
|
|
|
|
STRICT_WARNINGS_COPTS = [
|
|
"-Wall",
|
|
"-Wextra",
|
|
# Make all warnings errors, except for the exemptions below.
|
|
"-Werror",
|
|
"-Wno-error=cpp", # preprocessor #warning statement
|
|
"-Wno-error=deprecated-declarations", # [[deprecated]] attribute
|
|
]
|
|
|
|
CPP17_COPTS = [
|
|
"-std=c++17",
|
|
"-fno-rtti",
|
|
"-Wnon-virtual-dtor",
|
|
# Allow uses of the register keyword, which may appear in C headers.
|
|
"-Wno-register",
|
|
]
|
|
|
|
DISABLE_PENDING_WORKAROUND_COPTS = [
|
|
"-Wno-private-header",
|
|
]
|
|
|
|
PW_DEFAULT_COPTS = (
|
|
DEBUGGING +
|
|
REDUCED_SIZE_COPTS +
|
|
STRICT_WARNINGS_COPTS +
|
|
DISABLE_PENDING_WORKAROUND_COPTS
|
|
)
|
|
|
|
KYTHE_COPTS = [
|
|
"-Wno-unknown-warning-option",
|
|
]
|
|
|
|
PW_DEFAULT_LINKOPTS = []
|
|
|
|
def _add_defaults(kwargs):
|
|
"""Adds default arguments suitable for both C and C++ code to kwargs."""
|
|
|
|
copts = kwargs.get("copts", []) + PW_DEFAULT_COPTS
|
|
kwargs["copts"] = select({
|
|
"//pw_build:kythe": copts + KYTHE_COPTS,
|
|
"//conditions:default": copts,
|
|
})
|
|
kwargs["linkopts"] = kwargs.get("linkopts", []) + PW_DEFAULT_LINKOPTS
|
|
|
|
# Set linkstatic to avoid building .so files.
|
|
kwargs["linkstatic"] = True
|
|
|
|
kwargs.setdefault("features", [])
|
|
|
|
# Crosstool--adding this line to features disables header modules, which
|
|
# don't work with -fno-rtti. Note: this is not a command-line argument,
|
|
# it's "minus use_header_modules".
|
|
kwargs["features"].append("-use_header_modules")
|
|
|
|
def _default_cc_and_c_kwargs(kwargs):
|
|
_add_defaults(kwargs)
|
|
kwargs.setdefault("srcs", [])
|
|
|
|
cc = dict(kwargs.items())
|
|
cc["srcs"] = [src for src in kwargs["srcs"] if not src.endswith(".c")]
|
|
cc["copts"] = cc["copts"] + CPP17_COPTS
|
|
|
|
c_srcs = [src for src in kwargs["srcs"] if src.endswith(".c")]
|
|
|
|
if c_srcs:
|
|
c = dict(kwargs.items())
|
|
c["name"] += "_c"
|
|
c["srcs"] = c_srcs + [src for src in kwargs["srcs"] if src.endswith(".h")]
|
|
|
|
cc["deps"] = cc.get("deps", []) + [":" + c["name"]]
|
|
return cc, c
|
|
|
|
return cc, None
|
|
|
|
def _add_cc_and_c_targets(target, kwargs):
|
|
cc_kwargs, c_kwargs = _default_cc_and_c_kwargs(kwargs)
|
|
|
|
if c_kwargs:
|
|
native.cc_library(**c_kwargs)
|
|
|
|
target(**cc_kwargs)
|
|
|
|
def pw_cc_binary(**kwargs):
|
|
_add_cc_and_c_targets(native.cc_binary, kwargs)
|
|
|
|
def pw_cc_library(**kwargs):
|
|
_add_cc_and_c_targets(native.cc_library, kwargs)
|
|
|
|
def pw_cc_test(**kwargs):
|
|
kwargs["deps"] = kwargs.get("deps", []) + ["//pw_unit_test:main"]
|
|
_add_cc_and_c_targets(native.cc_test, kwargs)
|