blob: 5569cef4c6567030ed83b67d55fe66c4e957b87d [file] [log] [blame]
# Copyright 2022 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.
import("//build_overrides/pigweed.gni")
import("$dir_pw_build/python_action.gni")
import("$dir_pw_build/target_types.gni")
declare_args() {
# Enables or disables negative compilation tests for the current toolchain.
# Disabled by default since negative compilation tests increase gn gen time
# significantly.
pw_compilation_testing_NEGATIVE_COMPILATION_ENABLED = false
}
# Declares a compilation failure test. If
# pw_compilation_testing_NEGATIVE_COMPILATION_ENABLED is true, negative
# complilation tests will be executed in the build. These tests pass if
# compilation fails when #if block test cases are enabled in the code.
#
# Compilation failure tests may also be declared as part of a unit test in
# pw_test by settin negative_compilation_tests = true.
template("pw_cc_negative_compilation_test") {
assert(defined(invoker.sources) && invoker.sources != [],
"pw_cc_negative_compilation_test requires 'sources' to be provided")
if (pw_compilation_testing_NEGATIVE_COMPILATION_ENABLED) {
_out_dir = "$target_gen_dir/$target_name"
_args = [
"--output",
rebase_path(_out_dir, root_build_dir),
"--base",
get_label_info(":$target_name._base", "label_no_toolchain"),
"--name",
target_name,
]
# List the source files as both a GN path and a file system path.
foreach(file, invoker.sources) {
_args += [ get_path_info(file, "abspath") + ";" +
rebase_path(file, root_build_dir) ]
}
# Invoke the generator script, which generates a BUILD.gn file with a GN
# action for each NC test. The test names are returned as a list.
_tests = exec_script(
"$dir_pw_compilation_testing/py/pw_compilation_testing/generator.py",
_args,
"list lines",
invoker.sources)
# Create a group of the generated NC test targets.
group(target_name) {
deps = []
foreach(test, _tests) {
deps += [ "$_out_dir:$target_name.$test.negative_compilation_test" ]
}
}
} else {
# If compilation testing is disabled, only compile the base file, which the
# negative compilation test targets depend on. Use an action for this target
# so that depending on it will not link in any source files.
pw_python_action(target_name) {
script = "$dir_pw_build/py/pw_build/nop.py"
stamp = true
deps = [ ":$target_name._base" ]
}
}
# The base target is the sources with no tests enabled.
pw_source_set(target_name + "._base") {
forward_variables_from(invoker, "*")
if (!defined(deps)) {
deps = []
}
deps += [ "$dir_pw_compilation_testing:internal_pigweed_use_only" ]
}
}