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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.
if (current_cpu == "x86") {
_yasm_flags = [
"-felf32",
"-m",
"x86",
]
} else if (current_cpu == "x64") {
_yasm_flags = [
"-DPIC",
"-felf64",
"-m",
"amd64",
]
}
template("yasm_assemble") {
action_name = "${target_name}_action"
source_set_name = target_name
action_foreach(action_name) {
# Only the source set can depend on this.
visibility = [ ":$source_set_name" ]
script = "//third_party/yasm/run_yasm.py"
sources = invoker.sources
if (defined(invoker.inputs)) {
inputs = invoker.inputs
}
deps = []
if (defined(invoker.deps)) {
deps += invoker.deps
}
args = [ "yasm" ] + _yasm_flags
if (defined(invoker.yasm_flags)) {
args += invoker.yasm_flags
}
# User defined include dirs go first.
if (defined(invoker.include_dirs)) {
foreach(include, invoker.include_dirs) {
args += [ "-I" + rebase_path(include, root_build_dir) ]
}
}
# Default yasm include dirs. Make it match the native build (source root and
# root generated code directory).
# This goes to the end of include list.
args += [
"-I.",
# Using "//." will produce a relative path "../.." which looks better than
# "../../" which will result from using "//" as the base (although both
# work). This is because rebase_path will terminate the result in a
# slash if the input ends in a slash.
"-I" + rebase_path("//.", root_build_dir),
"-I" + rebase_path(root_gen_dir, root_build_dir),
]
# Extra defines.
if (defined(invoker.defines)) {
foreach(def, invoker.defines) {
args += [ "-D$def" ]
}
}
# Output file.
outputs = [
"$target_out_dir/$source_set_name/{{source_name_part}}.o",
]
args += [
"-o",
rebase_path(outputs[0], root_build_dir),
"{{source}}",
]
# The wrapper script run_yasm will write the depfile to the same name as
# the output but with .d appended (like gcc will).
depfile = outputs[0] + ".d"
}
# Gather the .o files into a linkable thing. This doesn't actually link
# anything (a source set just compiles files to link later), but will pass
# the object files generated by the action up the dependency chain.
static_library(source_set_name) {
if (defined(invoker.visibility)) {
visibility = invoker.visibility
}
sources = get_target_outputs(":$action_name")
deps = [
":$action_name",
]
}
}
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