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
Bazel run shell actions begin `bin/bash -c <command>`, without escaping,
the command can be treated as an argument to `bin/bash`.
Test: build/bazel/mixed_droid.sh
Change-Id: I423cb393da2e6ac97448ec77b2596f12670dfd31
hardlinks are incompatible with sandboxing
relative links are incopatible with Soong's use of `cp -d`
Test: build/bazel/ci/mixed_libc.sh
Change-Id: I8c776cda6a27c680c51466d9a7af1b499f2f566d
This allows support of generated hdrs / srcs in mixed builds.
Test: Manually verified that libc_bionic_ndk passes compilation (failed
previously due to missing generated heaer)
Test: bp2build and mixed_libc CI scripts
Test: New aquery test
Change-Id: I88e359a4bd9eba383c207d5cf812272725ff0a3d
In Bazel aquery responses, Bazel represents action inputs by preserving
the form of the depset data structure which contains them.
(https://docs.bazel.build/versions/master/skylark/lib/depset.html)
Thus, Soong's aquery handler must appropriately "flatten" this
data structure in cases where the depset consists of multiple levels.
Test: m nothing
Test: lunch aosp_flame && USE_BAZEL_ANALYSIS=1 m libc
Change-Id: I2ebacac1deea7538eb34ad1975594caae71091a2
Also introduce test suite for aquery handling
Test: m nothing
Test: lunch aosp_flame && USE_BAZEL_ANALYSIS=1 m libc
Change-Id: I2493d42782099ea0b575968fca38bce6f0d59015
