1 # ============================================================================= 2 # BUILD FLAGS 3 # ============================================================================= 4 # 5 # This block lists input arguments to the build, along with their default 6 # values. GN requires listing them explicitly so it can validate input and have 7 # a central place to manage the build flags. 8 # 9 # If a value is specified on the command line, it will overwrite the defaults 10 # given here, otherwise the default will be injected into the root scope. 11 # 12 # KEEP IN ALPHABETICAL ORDER and write a good description for everything. 13 # Use "is_*" names for intrinsic platform descriptions and build modes, and 14 # "use_*" names for optional features libraries, and configurations. 15 declare_args() { 16 is_android = 0 17 is_component_build = 1 18 is_chromeos = 0 19 is_debug = 1 20 is_ios = 0 21 use_ash = 0 22 use_aura = 0 23 use_ozone = 0 24 } 25 26 # ============================================================================= 27 # SOURCES FILTERS 28 # ============================================================================= 29 # 30 # These patterns filter out platform-specific files when assigning to the 31 # sources variable. The magic variable |sources_assignment_filter| is applied 32 # to each assignment or appending to the sources variable and matches are 33 # automatcally removed. 34 # 35 # We define lists of filters for each platform for all builds so they can 36 # be used by individual targets if necessary (a target can always change 37 # sources_assignment_filter on itself if it needs something more specific). 38 # 39 # Note that the patterns are NOT regular expressions. Only "*" and "\b" (path 40 # boundary = end of string or slash) are supported, and the entire string 41 # muct match the pattern (so you need "*.cc" to match all .cc files, for 42 # example). 43 44 windows_sources_filters = [ 45 "*_win.cc", 46 "*_win.h", 47 "*_win_unittest.cc", 48 "*\bwin/*", 49 ] 50 mac_sources_filters = [ 51 "*_mac.h", 52 "*_mac.cc", 53 "*_mac.mm", 54 "*_mac_unittest.h", 55 "*_mac_unittest.cc", 56 "*_mac_unittest.mm", 57 "*\bmac/*", 58 "*_cocoa.h", 59 "*_cocoa.cc", 60 "*_cocoa.mm", 61 "*_cocoa_unittest.h", 62 "*_cocoa_unittest.cc", 63 "*_cocoa_unittest.mm", 64 "*\bcocoa/*", 65 ] 66 ios_sources_filters = [ 67 "*_ios.h", 68 "*_ios.cc", 69 "*_ios.mm", 70 "*_ios_unittest.h", 71 "*_ios_unittest.cc", 72 "*_ios_unittest.mm", 73 "*\bios/*", 74 ] 75 objective_c_sources_filters = [ 76 "*.mm", 77 ] 78 linux_sources_filters = [ 79 "*_linux.h", 80 "*_linux.cc", 81 "*_linux_unittest.h", 82 "*_linux_unittest.cc", 83 "*\blinux/*", 84 ] 85 android_sources_filters = [ 86 "*_android.h", 87 "*_android.cc", 88 "*_android_unittest.h", 89 "*_android_unittest.cc", 90 "*\bandroid/*", 91 ] 92 posix_sources_filters = [ 93 "*_posix.h", 94 "*_posix.cc", 95 "*_posix_unittest.h", 96 "*_posix_unittest.cc", 97 "*\bposix/*", 98 ] 99 100 # Construct the full list of sources we're using for this platform. 101 sources_assignment_filter = [] 102 if (is_win) { 103 sources_assignment_filter += posix_sources_filters 104 } else { 105 sources_assignment_filter += windows_sources_filters 106 } 107 if (!is_mac) { 108 sources_assignment_filter += mac_sources_filters 109 } 110 if (!is_ios) { 111 sources_assignment_filter += ios_sources_filters 112 } 113 if (!is_mac && !is_ios) { 114 sources_assignment_filter += objective_c_sources_filters 115 } 116 if (!is_linux) { 117 sources_assignment_filter += linux_sources_filters 118 } 119 if (!is_android) { 120 sources_assignment_filter += android_sources_filters 121 } 122 123 # This is the actual set. 124 set_sources_assignment_filter(sources_assignment_filter) 125 126 # ============================================================================= 127 # SYSTEM CONFIG 128 # ============================================================================= 129 130 is_nacl = 0 131 132 # ============================================================================= 133 # BUILD OPTIONS 134 # ============================================================================= 135 136 if (is_component_build) { 137 component_mode = "shared_library" 138 } else { 139 component_mode = "static_library" 140 } 141 142 # ============================================================================= 143 # TARGET DEFAULTS 144 # ============================================================================= 145 # 146 # Set up the default configuration for every build target of the given type. 147 # The values configured here will be automatically set on the scope of the 148 # corresponding target. Target definitions can add or remove to the settings 149 # here as needed. 150 151 # Holds all configs used for making native executables and libraries, to avoid 152 # duplication in each target below. 153 native_compiler_configs = [ 154 "//build/config:my_msvs", # TODO(brettw) eraseme 155 156 "//build/config/compiler:compiler", 157 "//build/config/compiler:chromium_code", 158 "//build/config/compiler:default_warnings", 159 "//build/config/compiler:no_rtti", 160 "//build/config/compiler:runtime_library", 161 ] 162 if (is_win) { 163 native_compiler_configs += "//build/config/win:sdk" 164 } else if (is_mac) { 165 # TODO(brettw) this should be in an if (is_clang) block instead but I haven't 166 # written an is_clang flag yet. 167 native_compiler_configs += "//build/config/clang:find_bad_constructs" 168 } 169 170 if (is_debug) { 171 native_compiler_configs += "//build/config:debug" 172 } else { 173 native_compiler_configs += "//build/config:release" 174 } 175 176 set_defaults("executable") { 177 configs = native_compiler_configs 178 if (is_mac) { 179 configs += "//build/config/mac:mac_dynamic_flags" 180 } 181 } 182 183 set_defaults("static_library") { 184 configs = native_compiler_configs 185 } 186 187 set_defaults("shared_library") { 188 configs = native_compiler_configs 189 if (is_mac) { 190 configs += "//build/config/mac:mac_dynamic_flags" 191 } 192 } 193 194 # ============================================================================== 195 # TOOLCHAIN SETUP 196 # ============================================================================== 197 198 if (is_win) { 199 set_default_toolchain("//build/config/win:32") 200 } else if (is_mac) { 201 set_default_toolchain("//build/config/mac:clang") 202 } 203
