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 change constitutes a number of fixes which cause mixed builds to
have deterministic ninja file output:
1. Depsets are identified based on a hash of their contents instead of
an arbitrary ID integer from Bazel
2. Depset definitions in the ninja file are sorted by the above hashes
3. BuildStatements (action information from Bazel's aquery) are sorted
by their contents
Test: Ran `USE_BAZEL_ANALYSIS=1 m nothing` three times and verified the
md5sum of out/soong/build.ninja was identical all three runs.
Test: mixed_droid
Change-Id: Iffdf6cc62c31d76fbbfa78726827497516171f4f
Each depset now corresponds to a phony rule which depends on other
depsets or on full paths; thus, bazel's depset structure is preserved in
the form of phony rules of name bazel_depset_{id}.
Previously, flattening and recopying large lists of file path strings
was quite inefficient. This was particularly evident as we enumerated
hundreds of clang headers for each cc compile action.
This reduces soong_build analysis time by about 30% for mixed builds.
It also reduces ninja file size by ~750MB.
Fixes: 229405615
Test: Unit tests, manually verified metrics, mixed_droid CI
Change-Id: I78df152ac1488ae0c6807afdde4b4ad5e6d26287
This involves handling of linux-* platforms (identifying them
appropriately as host), disabling unsupported Windows platform, and
denylisting of still-problematic modules.
Test: mixed_droid, with verification that shared library artifacts
originate from bazel-out
Change-Id: Ib52db49a2d2a3c1ff9b76af23fd4f22cfc9182d0
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
target.kind was a field that existed for only a few months, and have
been removed from Bazel. This is needed to update to a newer Bazel version.
Also, this reverts filegroups to be queried for a specific arch again,
but leaving file targets in the common arch (which is correct, anyway).
Fixes: b/199363072
Test: mixed_libc
Test: presubmits
Change-Id: I3b8e5c43a39516d977d327a44a75750b2f251be3
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 should fix incrementality issues in cases where actions don't wipe
the old output. (Looking at you, llvm-ar)
Test: mixed_libc.sh
Change-Id: I4b6639e74c72921a5a703d73fd36f766f121c6ad
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
If a valid JAVA_HOME is set in the environment when running
bazel with --experimental_repository_disable_download, bazel
will unsuccessfully attempt to download rules_java. The above
flag has the practical effect of preventing the download attempt
(some clues as to why in the doc at go/aosp-bazel-jdk).
Note that this also prevents building java targets in mixed mode.
Eventually, we will pull in the java_rules into AOSP so they don't
need to be downloaded.
Test: build/bazel/ci/mixed_libc.sh
Change-Id: Icdb186c18a3334f4caa17243a8620a1cc8c1db0e
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
They used to be defined in Blueprint but since it doesn't have a
separate existence anymore, we can consolidate all command line
arguments here.
Note that Blueprint is called directly from soong_ui, but that happens
by a simple Go function call and not by invoking a separate binary, so
command line arguments are not needed there.
Test: Presubmits.
Change-Id: Ifa2c101ddbe424b76fc5a508d3d41c329e7353ca
Add a new request type with its own StarLark function
Hook it up via GetPythonBinary
Add to MockBazelContext a LabelToPythonBinary
Add a test for the new request type
Test: request_type_test.go:TestGetPythonBinaryParseResults
Change-Id: I05f6506adfbbdac8b3f40475509ed02ab8e844e5
Because it's commonly useful and not cc/ specific
Also export GenerateBazelBuildActions and update uses
Test: Existing tests pass
Change-Id: Ibc6858bb1129afba181a7686dda432defe33b00d
Rather than specifying a specific arch/os, use the android_target
platform that incorporates arch/os based on product config.
Test: build/bazel/ci/mixed_libc.sh
Change-Id: I2b30cfb9778444acbfd7648af2d331303cab416a
In mixed builds, Bazel operates in <root>/out/soong/workspace, but the real
OUT_DIR is just <root>out/, not <root>/out/soong/workspace/out. This CL
ensures that the correct OUT_DIR is passed to mixed builds's bazel by
making OUT_DIR absolute.
Also add STANDALONE_BAZEL to build_test's Bazel smoke test.
Test: TH
Change-Id: If8b4058d43bf821f5196016f9b0ad38edfe18716
It now handles adding .bp files and changing globs.
In order to do this, depfiles are now written separately from RunBlueprint.
This is necessary due to the confluence of a number of seemingly
unrelated factors:
1. The glob filelist dependencies are discovered in globSingleton
2. Singletons need to be registered because otherwise singleton module
types panic
3. Singletons don't work because they require mutators bp2build does not
run
Due to (1), we would need to run the glob singleton. However, due to (2)
and (3), we can't run singletons and have to run Blueprint with
StopBeforeGeneratingBuildActions, which is when the build actions
writing glob files would be generated. So what happens is:
1. When bp2build is run, the glob singleton is disabled
2. At the end of bp2build, the list of glob files is artifically added
to the depfile of the workspace marker file
3. When build.ninja is generated, the Ninja file containing the glob
list file is written by the now-active glob singleton
Test: Presubmits.
Change-Id: I3c5898d8c57c554a93520276c64a952afc912dbe
There is little overlap at this point, but we expect these to converge
more over time, to handle exported includes, libs, etc., this will allow
those changes to be handled in one place and allow more consolidation of
code.
Test: bp2build generate & sync; mixed build libc
Change-Id: I51685dad9f4fc11a634965a3c9e84f4a0e279ecb
Rather than having a single storage container, make multiple so that it
is easier to unit test building modules with bazel with MockBazelContext
Test: go test genrule_test
Change-Id: I1da85d28f096d5102ad889b9518fdda6914342b1
This CL contains the converter for libdl_android, a cc_library that
expands into a cc_shared_library and a regular cc_library.
Test: TH
Test: bp2build; bazel test //build/bazel/tests/...
Change-Id: If70641a538211b0d6b2aac0e4d0d06912318304d
go idiom is to define the interface where it is used rather than where
it is defined. This makes it obvious that ParseResult is not a used part
of the interface, removing the need to return an interface{} and cast
results.
Test: go test soong tests
Test: generate & sync bp2build; mixed build libc
Change-Id: I0d8d99c1d8d0125588522cc86502286b83c91bf7
