message_compiler.gni (2756B)
1 # Copyright 2015 The Chromium Authors 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 assert(is_win, "This only runs on Windows.") 6 7 # Runs mc.exe over a list of sources. The outputs (a header and rc file) are 8 # placed in the target gen dir, and compiled. Sources without a BOM will be 9 # processed as if they are UTF-16LE. Generated text files will be written in the 10 # ANSI codepage. 11 # 12 # sources 13 # List of message files to process. 14 # 15 # user_mode_logging (optional bool) 16 # Generates user-mode logging code. Defaults to false (no logging code). 17 # 18 # compile_generated_code (optional, deafults = true) 19 # If unset or true, the generated code will be compiled and linked into 20 # targets that depend on it. If set to false, the .h and .rc files will only 21 # be generated. 22 # 23 # deps, public_deps, visibility 24 # Normal meaning. 25 template("message_compiler") { 26 if (defined(invoker.compile_generated_code) && 27 !invoker.compile_generated_code) { 28 compile_generated_code = false 29 action_name = target_name 30 } else { 31 compile_generated_code = true 32 action_name = "${target_name}_mc" 33 source_set_name = target_name 34 } 35 36 action_foreach(action_name) { 37 if (compile_generated_code) { 38 visibility = [ ":$source_set_name" ] 39 } else { 40 forward_variables_from(invoker, [ "visibility" ]) 41 } 42 43 script = "//chromium/build/win/message_compiler.py" 44 45 outputs = [ 46 "$target_gen_dir/{{source_name_part}}.h", 47 "$target_gen_dir/{{source_name_part}}.rc", 48 ] 49 50 args = [ 51 # The first argument is the environment file saved to the build 52 # directory. This is required because the Windows toolchain setup saves 53 # the VC paths and such so that running "mc.exe" will work with the 54 # configured toolchain. This file is in the root build dir. 55 "environment.$target_cpu", 56 57 # Where to put the header. 58 "-h", 59 rebase_path(target_gen_dir, root_build_dir), 60 61 # Where to put the .rc file. 62 "-r", 63 rebase_path(target_gen_dir, root_build_dir), 64 65 # Sources without a BOM are UTF-16LE. 66 "-u", 67 ] 68 if (defined(invoker.user_mode_logging) && invoker.user_mode_logging) { 69 args += [ "-um" ] 70 } 71 args += [ "{{source}}" ] 72 73 forward_variables_from(invoker, 74 [ 75 "deps", 76 "public_deps", 77 "sources", 78 ]) 79 } 80 81 if (compile_generated_code) { 82 # Compile the generated rc file. 83 source_set(source_set_name) { 84 forward_variables_from(invoker, [ "visibility" ]) 85 sources = get_target_outputs(":$action_name") 86 deps = [ ":$action_name" ] 87 } 88 } 89 }