1# Copyright 2016 the V8 project 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 5import("//build/config/sanitizers/sanitizers.gni") 6import("//build/config/v8_target_cpu.gni") 7 8declare_args() { 9 # Indicate if valgrind was fetched as a custom deps to make it available on 10 # swarming. 11 v8_has_valgrind = false 12 13 # Indicate if gcmole was fetched as a hook to make it available on swarming. 14 v8_gcmole = false 15 16 # Turns on compiler optimizations in V8 in Debug build. 17 v8_optimized_debug = true 18 19 # Support for backtrace_symbols on linux. 20 v8_enable_backtrace = "" 21 22 # Enable the snapshot feature, for fast context creation. 23 # http://v8project.blogspot.com/2015/09/custom-startup-snapshots.html 24 v8_use_snapshot = true 25 26 # Use external files for startup data blobs: 27 # the JS builtins sources and the start snapshot. 28 v8_use_external_startup_data = "" 29 30 # Enable ECMAScript Internationalization API. Enabling this feature will 31 # add a dependency on the ICU library. 32 v8_enable_i18n_support = true 33} 34 35if (v8_use_external_startup_data == "") { 36 # If not specified as a gn arg, use external startup data by default if 37 # a snapshot is used and if we're not on ios. 38 v8_use_external_startup_data = v8_use_snapshot && !is_ios 39} 40 41if (v8_enable_backtrace == "") { 42 v8_enable_backtrace = is_debug && !v8_optimized_debug 43} 44 45# Points to // in v8 stand-alone or to //v8/ in chromium. We need absolute 46# paths for all configs in templates as they are shared in different 47# subdirectories. 48v8_path_prefix = get_path_info("../", "abspath") 49 50v8_inspector_js_protocol = v8_path_prefix + "/src/inspector/js_protocol.json" 51 52############################################################################### 53# Templates 54# 55 56# Common configs to remove or add in all v8 targets. 57v8_remove_configs = [ "//build/config/compiler:chromium_code" ] 58v8_add_configs = [ 59 "//build/config/compiler:no_chromium_code", 60 v8_path_prefix + ":features", 61 v8_path_prefix + ":toolchain", 62] 63 64if (is_debug && !v8_optimized_debug) { 65 v8_remove_configs += [ "//build/config/compiler:default_optimization" ] 66 v8_add_configs += [ "//build/config/compiler:no_optimize" ] 67} else { 68 v8_remove_configs += [ "//build/config/compiler:default_optimization" ] 69 70 # TODO(crbug.com/621335) Rework this so that we don't have the confusion 71 # between "optimize_speed" and "optimize_max". 72 if (is_posix && !is_android && !using_sanitizer) { 73 v8_add_configs += [ "//build/config/compiler:optimize_speed" ] 74 } else { 75 v8_add_configs += [ "//build/config/compiler:optimize_max" ] 76 } 77} 78 79if (is_posix && v8_enable_backtrace) { 80 v8_remove_configs += [ "//build/config/gcc:symbol_visibility_hidden" ] 81 v8_add_configs += [ "//build/config/gcc:symbol_visibility_default" ] 82} 83 84# All templates should be kept in sync. 85template("v8_source_set") { 86 source_set(target_name) { 87 forward_variables_from(invoker, "*", [ "configs" ]) 88 configs += invoker.configs 89 configs -= v8_remove_configs 90 configs += v8_add_configs 91 } 92} 93 94template("v8_executable") { 95 executable(target_name) { 96 forward_variables_from(invoker, 97 "*", 98 [ 99 "configs", 100 "remove_configs", 101 ]) 102 if (defined(invoker.remove_configs)) { 103 configs -= invoker.remove_configs 104 } 105 configs += invoker.configs 106 configs -= v8_remove_configs 107 configs += v8_add_configs 108 if (is_linux) { 109 # For enabling ASLR. 110 ldflags = [ "-pie" ] 111 } 112 } 113} 114 115template("v8_component") { 116 component(target_name) { 117 forward_variables_from(invoker, "*", [ "configs" ]) 118 configs += invoker.configs 119 configs -= v8_remove_configs 120 configs += v8_add_configs 121 } 122} 123