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# Copyright (c) 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This target generates a "last_change.h" header file in the generated files
# directory that contains a define of the last revision of the source tree
# of the form:
# #define LAST_CHANGE "123456"
#
# The version is a string rather than an integer for extra flexibility (for
# example, we may require git hashes in the future).
#
# All you nede to do is depend on this target, and then from your source code:
# #include "build/util/last_change.h"
custom("last_change") {
script = "//build/util/lastchange.py"
# This script must be run before targets depending on us.
hard_dep = true
# Rerun the script any time this file changes.
source_prereqs = [ "//build/util/LASTCHANGE" ]
output_header = "$target_gen_dir/last_change.h"
outputs = [ output_header ]
build_relative_src = rebase_path("//", ".", root_build_dir)
build_relative_outputs = rebase_path(output_header, ".", root_build_dir)
args = [
"--source-dir=$build_relative_src",
"--header=$build_relative_outputs",
"--version-macro=LAST_CHANGE",
]
}
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