This large refactoring has both immense performance implications and
improves mixed builds complexity / usability. Summary:
1. Queueing calls to Bazel is done in a new mutator instead of a full
soong_build pass. Normal soong_build flow is interrupted (via a
functional hook in blueprint) to invoke bazel and parse its response.
2. Implementing mixed build support for additional modules is as simple
as implementing MixedBuildsBuildable. In this interface, define the
request that must be queued to Bazel, and then subsequently define
how to handle the returned bazel cquery metadata.
3. Mixed builds consists of only a single pass. This greatly
improves mixed build performance.
Result:
A 33% runtime improvement on soong analysis phase with mixed builds.
Caveats:
C++ BazelHandler handling still remains a bit of a mess; I did what
I could within this CL's scope, but this may require additional cleanup.
Test: Treehugger
Test: Verified that aosp_arm ninja file is bit-for-bit identical with or
without this change.
Change-Id: I412d9c94d429105f4ebfafc84100d546069e6621
This also removes the special-case filegroup from mixed builds
buildroot; no special handling is required. Since we're currently
hardcoding linux_x86_64 as our host platform, it should be fine
to continue assumping that hardcoded host for now.
Test: USE_BAZEL_ANALYSIS=1 m adbd
Change-Id: I35509f4eb33ba7a243fab4c34b35958f6f2fceab
This will be the list of targets directly being requested + additional
targets necessary for mixed_root. This reduces the size of the cquery
file by ~300Kb. Additionally, it removes unnecessary targets, making it
ever so slightly easier to find what one is looking for in cquery.out
for debugging purposes.
Test: build/bazel/ci/mixed_droid.sh
Change-Id: I6d0e337c9ab7c13388459dee16415be0ab3c0506
This builds cap_names.list.h, which uses an eponymous filegroup
"generate_cap_names_list.awk" in Soong, but uses the file target
directly in Bazel.
This also improve filegroup support for mixed builds, by issuing a
cquery call _without_ arch. Filegroups in Soong don't have configurable
properties, so don't generate Bazel filegroups into buildroot's
config_nodes (which was x86_64 by default).
The mixed_build_root now looks like this:
```
config_node(...)
config_node(...)
config_node(...)
config_node(...)
...
filegroup(name = "common",
srcs = ["@//bionic/linker:linker_sources_x86",
"@//bionic/libc:kernel_input_headers",
"@//system/timezone/apex:com.android.tzdata-androidManifest",
"@//external/libcap:generate_cap_names_list.awk",
"@//bionic/linker:linker_sources_arm64",
"@//bionic/linker:linker_sources",
"@//bionic/libc:libc_sources_shared_arm",
"@//bionic/linker:linker_sources_x86_64",
"@//bionic/libc:all_kernel_uapi_headers",
"@//build/bazel/examples/apex/minimal:build.bazel.examples.apex.minimal-file_contexts",
"@//system/core/libcutils:android_filesystem_config_header",
"@//bionic/libc:libc_sources_static",
"@//bionic/linker:linker_sources_arm",
"@//bionic/libc/tools:bionic-gensyscalls",
"@//bionic/tools:bionic-generate-version-script",
"@//bionic/libc:libc_sources_shared"],
)
mixed_build_root(name = "buildroot",
deps = [":x86",
":arm64",
":arm",
":common",
":x86_64"],
)
```
Test: CI
Fixes: 198595323
Fixes: 198235838
Change-Id: I6df9a14da556cf358d96e6a99b514f66a2638295
These are just out/ and out/soong/ and the old names were quite
confusing.
Test: Presubmits.
Merged-In: I999ca62162062f27e449f83ffb00fa580d4065b8
Merged-In: I2fcd80a9e376a6842a06aa104a9f6f5c5e16f8c7
Change-Id: Ib481d2aac40df8da1b74174dc8ec576c1cb48be0
