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  # Includes files needed for correctness fuzzing.
10  v8_correctness_fuzzer = false
11
12  # Adds additional compile target for building multiple architectures at once.
13  v8_multi_arch_build = false
14
15  # Indicate if valgrind was fetched as a custom deps to make it available on
16  # swarming.
17  v8_has_valgrind = false
18
19  # Indicate if gcmole was fetched as a hook to make it available on swarming.
20  v8_gcmole = false
21
22  # Turns on compiler optimizations in V8 in Debug build.
23  v8_optimized_debug = true
24
25  # Support for backtrace_symbols on linux.
26  v8_enable_backtrace = ""
27
28  # Enable the snapshot feature, for fast context creation.
29  # http://v8project.blogspot.com/2015/09/custom-startup-snapshots.html
30  v8_use_snapshot = true
31
32  # Use external files for startup data blobs:
33  # the JS builtins sources and the start snapshot.
34  v8_use_external_startup_data = ""
35
36  # Enable ECMAScript Internationalization API. Enabling this feature will
37  # add a dependency on the ICU library.
38  v8_enable_i18n_support = true
39
40  # Enable inspector. See include/v8-inspector.h.
41  v8_enable_inspector = true
42
43  # Use static libraries instead of source_sets.
44  v8_static_library = false
45}
46
47if (v8_use_external_startup_data == "") {
48  # If not specified as a gn arg, use external startup data by default if
49  # a snapshot is used and if we're not on ios.
50  v8_use_external_startup_data = v8_use_snapshot && !is_ios
51}
52
53if (v8_enable_backtrace == "") {
54  v8_enable_backtrace = is_debug && !v8_optimized_debug
55}
56
57# Points to // in v8 stand-alone or to //v8/ in chromium. We need absolute
58# paths for all configs in templates as they are shared in different
59# subdirectories.
60v8_path_prefix = get_path_info("../", "abspath")
61
62v8_inspector_js_protocol = v8_path_prefix + "/src/inspector/js_protocol.json"
63
64###############################################################################
65# Templates
66#
67
68# Common configs to remove or add in all v8 targets.
69v8_remove_configs = [ "//build/config/compiler:chromium_code" ]
70v8_add_configs = [
71  "//build/config/compiler:no_chromium_code",
72  v8_path_prefix + ":features",
73  v8_path_prefix + ":toolchain",
74]
75
76if (is_debug && !v8_optimized_debug) {
77  v8_remove_configs += [ "//build/config/compiler:default_optimization" ]
78  v8_add_configs += [ "//build/config/compiler:no_optimize" ]
79} else {
80  v8_remove_configs += [ "//build/config/compiler:default_optimization" ]
81
82  # TODO(crbug.com/621335) Rework this so that we don't have the confusion
83  # between "optimize_speed" and "optimize_max".
84  if (is_posix && !is_android && !using_sanitizer) {
85    v8_add_configs += [ "//build/config/compiler:optimize_speed" ]
86  } else {
87    v8_add_configs += [ "//build/config/compiler:optimize_max" ]
88  }
89}
90
91if (is_posix && v8_enable_backtrace) {
92  v8_remove_configs += [ "//build/config/gcc:symbol_visibility_hidden" ]
93  v8_add_configs += [ "//build/config/gcc:symbol_visibility_default" ]
94}
95
96# All templates should be kept in sync.
97template("v8_source_set") {
98  if (defined(v8_static_library) && v8_static_library) {
99    static_library(target_name) {
100      forward_variables_from(invoker, "*", [ "configs" ])
101      configs += invoker.configs
102      configs -= v8_remove_configs
103      configs += v8_add_configs
104    }
105  } else {
106    source_set(target_name) {
107      forward_variables_from(invoker, "*", [ "configs" ])
108      configs += invoker.configs
109      configs -= v8_remove_configs
110      configs += v8_add_configs
111    }
112  }
113}
114
115template("v8_header_set") {
116  source_set(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
124template("v8_executable") {
125  executable(target_name) {
126    forward_variables_from(invoker,
127                           "*",
128                           [
129                             "configs",
130                             "remove_configs",
131                           ])
132    if (defined(invoker.remove_configs)) {
133      configs -= invoker.remove_configs
134    }
135    configs += invoker.configs
136    configs -= v8_remove_configs
137    configs += v8_add_configs
138    if (is_linux) {
139      # For enabling ASLR.
140      ldflags = [ "-pie" ]
141    }
142  }
143}
144
145template("v8_component") {
146  component(target_name) {
147    forward_variables_from(invoker, "*", [ "configs" ])
148    configs += invoker.configs
149    configs -= v8_remove_configs
150    configs += v8_add_configs
151  }
152}
153