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# Copyright 2020 Google LLC
#
# 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.
import("//build_overrides/pigweed.gni")
import("$dir_pigweed/targets/host/target_toolchains.gni")
import("$dir_pw_toolchain/generate_toolchain.gni")
config("common_config") {
include_dirs = [ "//include" ]
# No language extensions, to promote portability.
cflags_c = [
"-Wvla",
"-std=c99",
"-pedantic",
]
# Modern C++ for test and tooling.
cflags_cc = [ "-std=c++20" ]
}
config("enable_sanitizers") {
filter_path = rebase_path("sanitize_filter.txt", root_build_dir)
cflags = [
"-fsanitize=address,undefined,integer",
"-fsanitize-blacklist=$filter_path",
]
ldflags = cflags
inputs = [ "sanitize_filter.txt" ]
}
config("enable_fuzzer") {
cflags = [
"-fsanitize=fuzzer",
"-O1",
"-fno-omit-frame-pointer",
"-fno-optimize-sibling-calls",
]
ldflags = cflags
}
# Define a scope for each toolchain that can be fed into generate_toolchain.
_host_debug = {
# Use Pigweed's host_clang_debug toolchain as a base.
_toolchain_base = pw_target_toolchain_host.clang_debug
# Forward everything except the defaults scope from that toolchain.
forward_variables_from(_toolchain_base, "*", [ "defaults" ])
defaults = {
# Forward everything from the base toolchain's defaults.
forward_variables_from(_toolchain_base.defaults, "*")
# Extend with custom build arguments for the target.
default_configs += [
"//toolchains:common_config",
"//toolchains:enable_sanitizers",
]
}
}
_host_fuzz = {
# Use Pigweed's host_clang_debug toolchain as a base.
_toolchain_base = pw_target_toolchain_host.clang_debug
# Forward everything except the defaults scope from that toolchain.
forward_variables_from(_toolchain_base, "*", [ "defaults" ])
defaults = {
# Forward everything from the base toolchain's defaults.
forward_variables_from(_toolchain_base.defaults, "*")
# Extend with custom build arguments for the target.
default_configs += [
"//toolchains:common_config",
"//toolchains:enable_sanitizers",
"//toolchains:enable_fuzzer",
]
}
}
_host_optimized = {
# Use Pigweed's host_clang_size_optimized toolchain as a base.
_toolchain_base = pw_target_toolchain_host.clang_size_optimized
# Forward everything except the defaults scope from that toolchain.
forward_variables_from(_toolchain_base, "*", [ "defaults" ])
defaults = {
# Forward everything from the base toolchain's defaults.
forward_variables_from(_toolchain_base.defaults, "*")
# Extend with custom build arguments for the target.
default_configs += [ "//toolchains:common_config" ]
}
}
# Create the actual GN toolchains.
generate_toolchain("host_debug") {
forward_variables_from(_host_debug, "*")
}
generate_toolchain("host_fuzz") {
forward_variables_from(_host_fuzz, "*")
}
generate_toolchain("host_optimized") {
forward_variables_from(_host_optimized, "*")
}
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