Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1 | # Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 | # Use of this source code is governed by a BSD-style license that can be |
| 3 | # found in the LICENSE file. |
| 4 | |
| 5 | if (current_cpu == "x86") { |
| 6 | _yasm_flags = [ |
| 7 | "-felf32", |
| 8 | "-m", |
| 9 | "x86", |
| 10 | ] |
| 11 | } else if (current_cpu == "x64") { |
| 12 | _yasm_flags = [ |
| 13 | "-DPIC", |
| 14 | "-felf64", |
| 15 | "-m", |
| 16 | "amd64", |
| 17 | ] |
| 18 | } |
| 19 | |
| 20 | template("yasm_assemble") { |
| 21 | action_name = "${target_name}_action" |
| 22 | source_set_name = target_name |
| 23 | |
| 24 | action_foreach(action_name) { |
| 25 | # Only the source set can depend on this. |
| 26 | visibility = [ ":$source_set_name" ] |
| 27 | |
| 28 | script = "//third_party/yasm/run_yasm.py" |
| 29 | sources = invoker.sources |
| 30 | |
| 31 | if (defined(invoker.inputs)) { |
| 32 | inputs = invoker.inputs |
| 33 | } |
| 34 | |
| 35 | deps = [] |
| 36 | if (defined(invoker.deps)) { |
| 37 | deps += invoker.deps |
| 38 | } |
| 39 | |
| 40 | args = [ "yasm" ] + _yasm_flags |
| 41 | if (defined(invoker.yasm_flags)) { |
| 42 | args += invoker.yasm_flags |
| 43 | } |
| 44 | |
| 45 | # User defined include dirs go first. |
| 46 | if (defined(invoker.include_dirs)) { |
| 47 | foreach(include, invoker.include_dirs) { |
| 48 | args += [ "-I" + rebase_path(include, root_build_dir) ] |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | # Default yasm include dirs. Make it match the native build (source root and |
| 53 | # root generated code directory). |
| 54 | # This goes to the end of include list. |
| 55 | args += [ |
| 56 | "-I.", |
| 57 | |
| 58 | # Using "//." will produce a relative path "../.." which looks better than |
| 59 | # "../../" which will result from using "//" as the base (although both |
| 60 | # work). This is because rebase_path will terminate the result in a |
| 61 | # slash if the input ends in a slash. |
| 62 | "-I" + rebase_path("//.", root_build_dir), |
| 63 | "-I" + rebase_path(root_gen_dir, root_build_dir), |
| 64 | ] |
| 65 | |
| 66 | # Extra defines. |
| 67 | if (defined(invoker.defines)) { |
| 68 | foreach(def, invoker.defines) { |
| 69 | args += [ "-D$def" ] |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | # Output file. |
| 74 | outputs = [ |
| 75 | "$target_out_dir/$source_set_name/{{source_name_part}}.o", |
| 76 | ] |
| 77 | args += [ |
| 78 | "-o", |
| 79 | rebase_path(outputs[0], root_build_dir), |
| 80 | "{{source}}", |
| 81 | ] |
| 82 | |
| 83 | # The wrapper script run_yasm will write the depfile to the same name as |
| 84 | # the output but with .d appended (like gcc will). |
| 85 | depfile = outputs[0] + ".d" |
| 86 | } |
| 87 | |
| 88 | # Gather the .o files into a linkable thing. This doesn't actually link |
| 89 | # anything (a source set just compiles files to link later), but will pass |
| 90 | # the object files generated by the action up the dependency chain. |
| 91 | source_set(source_set_name) { |
| 92 | if (defined(invoker.visibility)) { |
| 93 | visibility = invoker.visibility |
| 94 | } |
| 95 | |
| 96 | sources = get_target_outputs(":$action_name") |
| 97 | |
| 98 | deps = [ |
| 99 | ":$action_name", |
| 100 | ] |
| 101 | } |
| 102 | } |