chromium-src-build/split_static_library.gni

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# Copyright 2016 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.
template("split_static_library") {
assert(defined(invoker.split_count),
"Must define split_count for split_static_library")
# In many conditions the number of inputs will be 1 (because the count will
# be conditional on platform or configuration) so optimize that.
if (invoker.split_count == 1) {
static_library(target_name) {
forward_variables_from(invoker, "*")
}
} else {
group_name = target_name
generated_static_libraries = []
current_library_index = 0
foreach(current_sources, split_list(invoker.sources, invoker.split_count)) {
current_name = "${target_name}_$current_library_index"
assert(
current_sources != [],
"Your values for splitting a static library generate one that has no sources.")
generated_static_libraries += [ ":$current_name" ]
static_library(current_name) {
# Generated static library shard gets everything but sources (which
# we're redefining) and visibility (which is set to be the group
# below).
forward_variables_from(invoker,
"*",
[
"sources",
"visibility",
])
sources = current_sources
visibility = [ ":$group_name" ]
}
current_library_index = current_library_index + 1
}
group(group_name) {
public_deps = generated_static_libraries
forward_variables_from(invoker,
[
"testonly",
"visibility",
])
}
}
}