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# Copyright (c) 2013 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.
# =============================================================================
# BUILD FLAGS
# =============================================================================
#
# This block lists input arguments to the build, along with their default
# values. GN requires listing them explicitly so it can validate input and have
# a central place to manage the build flags.
#
# If a value is specified on the command line, it will overwrite the defaults
# given here, otherwise the default will be injected into the root scope.
#
# KEEP IN ALPHABETICAL ORDER and write a good description for everything.
# Use "is_*" names for intrinsic platform descriptions and build modes, and
# "use_*" names for optional features libraries, and configurations.
declare_args() {
# Set to build the Android version.
is_android = false
# Component build.
is_component_build = true
# ChromeOS build.
is_chromeos = false
# Debug build.
is_debug = true
# IOS build.
is_ios = false
# Set when building with the "untrusted" Native Client toolchain.
#
# Do not set directly, this will be set automatically when compiling targets
# with a NaCl toolchain.
is_nacl = false
# Set to true when compiling with the Clang compiler. Typically this is used
# to configure warnings.
is_clang = false
# ASH is enabled.
use_ash = false
# Aura is enabled.
use_aura = false
# Ozone is enabled.
use_ozone = false
}
# =============================================================================
# SOURCES FILTERS
# =============================================================================
#
# These patterns filter out platform-specific files when assigning to the
# sources variable. The magic variable |sources_assignment_filter| is applied
# to each assignment or appending to the sources variable and matches are
# automatcally removed.
#
# We define lists of filters for each platform for all builds so they can
# be used by individual targets if necessary (a target can always change
# sources_assignment_filter on itself if it needs something more specific).
#
# Note that the patterns are NOT regular expressions. Only "*" and "\b" (path
# boundary = end of string or slash) are supported, and the entire string
# muct match the pattern (so you need "*.cc" to match all .cc files, for
# example).
windows_sources_filters = [
"*_win.cc",
"*_win.h",
"*_win_unittest.cc",
"*\bwin/*",
]
mac_sources_filters = [
"*_mac.h",
"*_mac.cc",
"*_mac.mm",
"*_mac_unittest.h",
"*_mac_unittest.cc",
"*_mac_unittest.mm",
"*\bmac/*",
"*_cocoa.h",
"*_cocoa.cc",
"*_cocoa.mm",
"*_cocoa_unittest.h",
"*_cocoa_unittest.cc",
"*_cocoa_unittest.mm",
"*\bcocoa/*",
]
ios_sources_filters = [
"*_ios.h",
"*_ios.cc",
"*_ios.mm",
"*_ios_unittest.h",
"*_ios_unittest.cc",
"*_ios_unittest.mm",
"*\bios/*",
]
objective_c_sources_filters = [
"*.mm",
]
linux_sources_filters = [
"*_linux.h",
"*_linux.cc",
"*_linux_unittest.h",
"*_linux_unittest.cc",
"*\blinux/*",
"*_x11.cc",
"*_x11.h",
]
android_sources_filters = [
"*_android.h",
"*_android.cc",
"*_android_unittest.h",
"*_android_unittest.cc",
"*\bandroid/*",
]
posix_sources_filters = [
"*_posix.h",
"*_posix.cc",
"*_posix_unittest.h",
"*_posix_unittest.cc",
"*\bposix/*",
]
# Construct the full list of sources we're using for this platform.
sources_assignment_filter = []
if (is_win) {
sources_assignment_filter += posix_sources_filters
} else {
sources_assignment_filter += windows_sources_filters
}
if (!is_mac) {
sources_assignment_filter += mac_sources_filters
}
if (!is_ios) {
sources_assignment_filter += ios_sources_filters
}
if (!is_mac && !is_ios) {
sources_assignment_filter += objective_c_sources_filters
}
if (!is_linux) {
sources_assignment_filter += linux_sources_filters
}
if (!is_android) {
sources_assignment_filter += android_sources_filters
}
# This is the actual set.
set_sources_assignment_filter(sources_assignment_filter)
# =============================================================================
# BUILD OPTIONS
# =============================================================================
if (is_component_build) {
component_mode = "shared_library"
} else {
component_mode = "static_library"
}
toolkit_uses_gtk = is_linux
# =============================================================================
# TARGET DEFAULTS
# =============================================================================
#
# Set up the default configuration for every build target of the given type.
# The values configured here will be automatically set on the scope of the
# corresponding target. Target definitions can add or remove to the settings
# here as needed.
# Holds all configs used for making native executables and libraries, to avoid
# duplication in each target below.
native_compiler_configs = [
"//build/config:my_msvs", # TODO(brettw) eraseme
"//build/config/compiler:compiler",
"//build/config/compiler:chromium_code",
"//build/config/compiler:default_warnings",
"//build/config/compiler:no_rtti",
"//build/config/compiler:runtime_library",
]
if (is_win) {
native_compiler_configs += "//build/config/win:sdk"
} else if (is_mac) {
# TODO(brettw) this should be in an if (is_clang) block instead but I haven't
# written an is_clang flag yet.
native_compiler_configs += "//build/config/clang:find_bad_constructs"
}
if (is_debug) {
native_compiler_configs += "//build/config:debug"
} else {
native_compiler_configs += "//build/config:release"
}
set_defaults("executable") {
configs = native_compiler_configs
if (is_mac) {
configs += "//build/config/mac:mac_dynamic_flags"
} else if (is_linux) {
configs += "//build/config/linux:executable_ldconfig"
}
}
set_defaults("static_library") {
configs = native_compiler_configs
}
set_defaults("shared_library") {
configs = native_compiler_configs
if (is_mac) {
configs += "//build/config/mac:mac_dynamic_flags"
}
}
# ==============================================================================
# TOOLCHAIN SETUP
# ==============================================================================
if (is_win) {
set_default_toolchain("//build/toolchain/win:32")
} else if (is_linux) {
set_default_toolchain("//build/toolchain/linux:gcc")
} else if (is_mac) {
set_default_toolchain("//build/toolchain/mac:clang")
}
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