2016-08-16 00:02:23 +02:00
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// Copyright 2015 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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2021-02-04 03:08:28 +01:00
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package {
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default_applicable_licenses: ["Android-Apache-2.0"],
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}
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2021-09-01 08:57:48 +02:00
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blueprint_go_binary {
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2016-08-16 00:02:23 +02:00
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name: "soong_build",
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deps: [
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"blueprint",
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"blueprint-bootstrap",
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2020-02-10 20:23:49 +01:00
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"golang-protobuf-proto",
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2021-09-22 02:50:30 +02:00
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"golang-protobuf-android",
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2016-08-16 00:02:23 +02:00
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"soong",
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"soong-android",
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2022-03-19 01:33:24 +01:00
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"soong-provenance",
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2020-11-26 01:06:39 +01:00
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"soong-bp2build",
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2020-02-10 20:23:49 +01:00
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"soong-ui-metrics_proto",
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2016-08-16 00:02:23 +02:00
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],
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srcs: [
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"main.go",
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2017-12-12 00:52:26 +01:00
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"writedocs.go",
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2020-11-05 13:42:11 +01:00
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"queryview.go",
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Surface module properties as Bazel BUILD target attributes in the Bazel overlay
This patchset changes bazel_overlay to generate soong_module as a macro,
instead of a rule, and generate module properties in the BUILD files as
kwargs to the soong_module macro.
Here's a sample of the new BUILD files with module properties:
bionic/libdl/BUILD.bazel:
https://paste.googleplex.com/6484466996346880?raw
art/build/apex/BUILD.bazel:
https://paste.googleplex.com/5461276001042432?raw
bionic/apex/BUILD.bazel:
https://paste.googleplex.com/4932795173437440?raw
soong_module is now a macro that conditionally expands to underlying
soong_<module type> rules with statically defined attributes. In this
CL, we are starting with a hardcoded filegroup rule definition to
demonstrate the conditional rule loading within the soong_module macro.
If the module_type matches an existing Bazel rule, soong_module forwards
the entire **kwargs into the rule, which Bazel typechecks.
Non-filegroup module types will be expanded into generic_soong_module,
but with the kwargs dropped.
This approach allows us to:
1) Programmtically generate soong_<module type> rules for all module
types available in Soong, together with the statically defined attribute
types in `attrs`.
2) Incrementally migrate and test individual module types from
generic_soong_module to their module rule shims.
3) Swap out the module rule shims to the actual Bazel rules (e.g
cc_library, java_library) and perform attribute manipulation in Starlark
itself.
Example of querying against the 'srcs' attribute in soong_filegroup:
```
$ bazel cquery 'kind(soong_filegroup, //...)' | wc -l
590
$ bazel cquery --output=build 'attr(srcs, "linker.cpp",
kind(soong_filegroup, //bionic/...))'
INFO: Analyzed 3907 targets (0 packages loaded, 0 targets configured).
INFO: Found 3907 targets...
/usr/local/google/home/jingwen/aosp/out/soong/bazel_overlay/bionic/linker/BUILD.bazel:4144:13
soong_filegroup(
name = "linker_sources",
generator_name = "linker_sources",
generator_function = "soong_module",
generator_location = "bionic/linker/BUILD.bazel:4144:13",
srcs = ["dlfcn.cpp", "linker.cpp", "linker_block_allocator.cpp",
"linker_dlwarning.cpp", "linker_cfi.cpp", "linker_config.cpp",
"linker_debug.cpp", "linker_gdb_support.cpp", "linker_globals.cpp",
"linker_libc_support.c", "linker_libcxx_support.cpp",
"linker_namespaces.cpp", "linker_logger.cpp",
"linker_mapped_file_fragment.cpp", "linker_phdr.cpp",
"linker_relocate.cpp", "linker_sdk_versions.cpp", "linker_soinfo.cpp",
"linker_tls.cpp", "linker_utils.cpp", "rt.cpp"],
deps = [],
)
/usr/local/google/home/jingwen/aosp/out/soong/bazel_overlay/soong_module.bzl:32:23
in <toplevel>
```
This CL is known to be lacking the following features, and will be looked at in follow up CLs:
1) Pretty printing reflect.Interface properties, like arch, multilib and
dists.
2) Generating module Bazel rule shims for all module types, instead of
hardcoding them like `soong_filegroup`.
Bug: 162720644
Test: bazel_overlay_test.go (soong build test)
Test: m bazel_overlay && cd out/soong/bazel_overlay && bazel cquery //...
Signed-off-by: Jingwen Chen <jingwen@google.com>
Change-Id: Ic1e448887eb540ed15a55bc4090cf75a4d832d41
2020-08-07 16:16:34 +02:00
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],
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2016-08-16 00:02:23 +02:00
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primaryBuilder: true,
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}
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