third_party: Add Abseil C++ build support

This CL adds the GN files needed to build Abseil C++. These files were
generated by //pw_build/py/pw_build/generate_3p_gn.py

Change-Id: Id58040c22ac64a305585297be4ebf2e256a264ef
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/135957
Commit-Queue: Aaron Green <[email protected]>
Reviewed-by: Rob Mohr <[email protected]>
Reviewed-by: Taylor Cramer <[email protected]>

pw_fuzzer/fuzzer.gni

@@ -15,6 +15,7 @@
 import("//build_overrides/pigweed.gni")
 
 import("$dir_pw_build/error.gni")
+import("$dir_pw_third_party/abseil-cpp/abseil-cpp.gni")
 import("$dir_pw_toolchain/host_clang/toolchains.gni")
 import("$dir_pw_unit_test/test.gni")
 

pw_package/py/BUILD.gn

@@ -27,6 +27,7 @@ pw_python_package("py") {
     "pw_package/git_repo.py",
     "pw_package/package_manager.py",
     "pw_package/packages/__init__.py",
+    "pw_package/packages/abseil_cpp.py",
     "pw_package/packages/arduino_core.py",
     "pw_package/packages/boringssl.py",
     "pw_package/packages/chromium_verifier.py",

pw_package/py/pw_package/packages/abseil_cpp.py

@@ -0,0 +1,46 @@
+# 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.
+"""Install and check status of Abseil C++."""
+
+import pathlib
+from typing import Sequence
+
+import pw_package.git_repo
+import pw_package.package_manager
+
+
+class AbseilCPP(pw_package.git_repo.GitRepo):
+    """Install and check status of Abseil C++."""
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(
+            *args,
+            name='abseil-cpp',
+            url=(
+                'https://pigweed.googlesource.com/'
+                'third_party/github/abseil/abseil-cpp'
+            ),
+            commit='65109ecdf01a829bdb5e428174b3abb181e75826',
+            **kwargs,
+        )
+
+    def info(self, path: pathlib.Path) -> Sequence[str]:
+        return (
+            f'{self.name} installed in: {path}',
+            "Enable by running 'gn args out' and adding this line:",
+            f'  dir_pw_third_party_abseil_cpp = "{path}"',
+        )
+
+
+pw_package.package_manager.register(AbseilCPP)

pw_package/py/pw_package/pigweed_packages.py

@@ -18,6 +18,7 @@
 from pw_package import package_manager
 
 # pylint: disable=unused-import
+from pw_package.packages import abseil_cpp
 from pw_package.packages import arduino_core
 from pw_package.packages import boringssl
 from pw_package.packages import chromium_verifier

pw_presubmit/py/pw_presubmit/pigweed_presubmit.py

@@ -384,6 +384,12 @@ def gn_arm_build(ctx: PresubmitContext):
 gn_fuzz_build = build.GnGenNinja(
     name='gn_fuzz_build',
     path_filter=_BUILD_FILE_FILTER,
+    packages=('abseil-cpp',),
+    gn_args={
+        'dir_pw_third_party_abseil_cpp': lambda ctx: '"{}"'.format(
+            ctx.package_root / 'abseil-cpp'
+        ),
+    },
     ninja_targets=('host_clang_fuzz',),
 )
 

third_party/abseil-cpp/BUILD.gn

@@ -0,0 +1,54 @@
+# 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.
+
+# DO NOT MANUALLY EDIT!
+# This file was automatically generated by pw_build/gn_writer.py
+
+import("//build_overrides/pigweed.gni")
+
+import("$dir_pw_build/target_types.gni")
+import("$dir_pw_docgen/docs.gni")
+import("$dir_pw_third_party/abseil-cpp/abseil-cpp.gni")
+
+config("abseil_cpp_public_config1") {
+  include_dirs = [ "$dir_pw_third_party_abseil_cpp" ]
+}
+
+config("abseil_cpp_config1") {
+  cflags = [
+    "-DNOMINMAX",
+    "-Wall",
+    "-Wcast-qual",
+    "-Wconversion-null",
+    "-Wextra",
+    "-Wformat-security",
+    "-Wmissing-declarations",
+    "-Woverlength-strings",
+    "-Wpointer-arith",
+    "-Wundef",
+    "-Wunused-local-typedefs",
+    "-Wunused-result",
+    "-Wvarargs",
+    "-Wvla",
+    "-Wwrite-strings",
+  ]
+}
+
+config("abseil_cpp_config2") {
+  ldflags = [ "-pthread" ]
+}
+
+pw_doc_group("docs") {
+  sources = [ "docs.rst" ]
+}

third_party/abseil-cpp/OWNERS

@@ -0,0 +1 @@
+[email protected]

third_party/abseil-cpp/abseil-cpp.gni

@@ -0,0 +1,23 @@
+# 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.
+
+# DO NOT MANUALLY EDIT!
+# This file was automatically generated by pw_build/gn_writer.py
+
+declare_args() {
+  # If compiling tests with Abseil C++, this variable is set to the path to the
+  # Abseil C++ installation. When set, a pw_source_set for the Abseil C++ library
+  # is created at "$dir_pw_third_party/abseil-cpp".
+  dir_pw_third_party_abseil_cpp = ""
+}

third_party/abseil-cpp/absl/algorithm/BUILD.gn

@@ -0,0 +1,50 @@
+# 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.
+
+# DO NOT MANUALLY EDIT!
+# This file was automatically generated by pw_build/gn_writer.py
+# It contains GN build targets for absl/algorithm.
+
+import("//build_overrides/pigweed.gni")
+
+import("$dir_pw_build/target_types.gni")
+import("$dir_pw_third_party/abseil-cpp/abseil-cpp.gni")
+
+# Generated from //absl/algorithm:algorithm
+pw_source_set("algorithm") {
+  public = [ "$dir_pw_third_party_abseil_cpp/absl/algorithm/algorithm.h" ]
+  public_configs = [ "../..:abseil_cpp_public_config1" ]
+  configs = [
+    "../../configs:internal_disabled_warnings",
+    "../..:abseil_cpp_config1",
+  ]
+  remove_configs = [ "$dir_pw_fuzzer:instrumentation" ]
+  public_deps = [ "../base:config" ]
+}
+
+# Generated from //absl/algorithm:container
+pw_source_set("container") {
+  public = [ "$dir_pw_third_party_abseil_cpp/absl/algorithm/container.h" ]
+  public_configs = [ "../..:abseil_cpp_public_config1" ]
+  configs = [
+    "../../configs:internal_disabled_warnings",
+    "../..:abseil_cpp_config1",
+  ]
+  remove_configs = [ "$dir_pw_fuzzer:instrumentation" ]
+  public_deps = [
+    ":algorithm",
+    "../base:core_headers",
+    "../meta:type_traits",
+  ]
+}