Merge "Generate revision.txt file containing unique ID."

# Build kzip files (source files for the indexing pipeline) for the given configuration,

# merge them and place the resulting all.kzip into $DIST_DIR.

# It is assumed that the current directory is the top of the source tree.

# The following enviromnet variables affect the result:

#   TARGET_PRODUCT        target device name, e.g., `aosp_blueline`

# The following environment variables affect the result:

#   TARGET_PRODUCT        target device name, e.g., 'aosp_blueline'

#   TARGET_BUILD_VARIANT  variant, e.g., `userdebug`

#   OUT_DIR               where the build is happening (./out if not specified)

#   DIST_DIR              where the resulting all.kzip will be placed

#   XREF_CORPUS           source code repository URI, e.g.,

#                        `android.googlesource.com/platform/superproject`

#   XREF_CORPUS           source code repository URI, e.g., 'android.googlesource.com/platform/superproject'

#   BUILD_NUMBER          build number, used to generate unique ID (will use UUID if not set)

# The extraction might fail for some source files, so run with -k

build/soong/soong_ui.bash --build-mode --all-modules --dir=$PWD -k merge_zips xref_cxx xref_java

# TODO(asmundak): this should be done by soong.

declare -r allkzip=all.kzip

"${OUT_DIR:-out}/soong/host/linux-x86/bin/merge_zips" "$DIST_DIR/$allkzip" @<(find $OUT_DIR -name '*.kzip')

echo "${BUILD_NUMBER:-$(uuidgen)}" >"$DIST_DIR/revision.txt"