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1 # Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 # Copyright (c) 2013 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 # ============================================================================= | 5 # ============================================================================= |
6 # BUILD FLAGS | 6 # BUILD FLAGS |
7 # ============================================================================= | 7 # ============================================================================= |
8 # | 8 # |
9 # This block lists input arguments to the build, along with their default | 9 # This block lists input arguments to the build, along with their default |
10 # values. GN requires listing them explicitly so it can validate input and have | 10 # values. GN requires listing them explicitly so it can validate input and have |
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65 # -1 means auto-set (off in release, regular in debug). | 65 # -1 means auto-set (off in release, regular in debug). |
66 symbol_level = -1 | 66 symbol_level = -1 |
67 | 67 |
68 # Component build. | 68 # Component build. |
69 is_component_build = false | 69 is_component_build = false |
70 | 70 |
71 # Debug build. | 71 # Debug build. |
72 is_debug = true | 72 is_debug = true |
73 | 73 |
74 # Whether we're a traditional desktop unix. | 74 # Whether we're a traditional desktop unix. |
75 is_desktop_linux = os == "linux" && os != "chromeos" | 75 is_desktop_linux = current_os == "linux" && current_os != "chromeos" |
76 | 76 |
77 # Set to true when compiling with the Clang compiler. Typically this is used | 77 # Set to true when compiling with the Clang compiler. Typically this is used |
78 # to configure warnings. | 78 # to configure warnings. |
79 is_clang = os == "mac" || os == "ios" || os == "linux" || os == "chromeos" | 79 is_clang = current_os == "mac" || current_os == "ios" || |
| 80 current_os == "linux" || current_os == "chromeos" |
80 | 81 |
81 # Selects the desired build flavor. Official builds get additional | 82 # Selects the desired build flavor. Official builds get additional |
82 # processing to prepare for release. Normally you will want to develop and | 83 # processing to prepare for release. Normally you will want to develop and |
83 # test with this flag off. | 84 # test with this flag off. |
84 is_official_build = false | 85 is_official_build = false |
85 | 86 |
86 # Select the desired branding flavor. False means normal Chromium branding, | 87 # Select the desired branding flavor. False means normal Chromium branding, |
87 # true means official Google Chrome branding (requires extra Google-internal | 88 # true means official Google Chrome branding (requires extra Google-internal |
88 # resources). | 89 # resources). |
89 is_chrome_branded = false | 90 is_chrome_branded = false |
90 | 91 |
91 # Compile for Address Sanitizer to find memory bugs. | 92 # Compile for Address Sanitizer to find memory bugs. |
92 is_asan = false | 93 is_asan = false |
93 | 94 |
94 # Compile for Leak Sanitizer to find leaks. | 95 # Compile for Leak Sanitizer to find leaks. |
95 is_lsan = false | 96 is_lsan = false |
96 | 97 |
97 # Compile for Memory Sanitizer to find uninitialized reads. | 98 # Compile for Memory Sanitizer to find uninitialized reads. |
98 is_msan = false | 99 is_msan = false |
99 | 100 |
100 # Compile for Thread Sanitizer to find threading bugs. | 101 # Compile for Thread Sanitizer to find threading bugs. |
101 is_tsan = false | 102 is_tsan = false |
102 | 103 |
103 if (os == "chromeos") { | 104 if (current_os == "chromeos") { |
104 # Allows the target toolchain to be injected as arguments. This is needed | 105 # Allows the target toolchain to be injected as arguments. This is needed |
105 # to support the CrOS build system which supports per-build-configuration | 106 # to support the CrOS build system which supports per-build-configuration |
106 # toolchains. | 107 # toolchains. |
107 cros_use_custom_toolchain = false | 108 cros_use_custom_toolchain = false |
108 } | 109 } |
109 | 110 |
110 # TODO(cjhopman): Make target_arch work for all platforms. | 111 # TODO(dpranke): Replace target_arch with target_cpu. |
111 | 112 |
112 # Architecture of the target device. For Android builds, this will be equal to | 113 # Architecture of the target device. For Android builds, this will be |
113 # the cpu_arch of the default toolchain. When checking the CPU architecture | 114 # equal to the current_cpu of the default toolchain. When checking |
114 # for source files and build dependencies you should almost alway use cpu_arch | 115 # the CPU architecture for source files and build dependencies you |
115 # instead. cpu_arch is the architecture of the current toolchain and allows | 116 # should almost alway use current_cpu instead. current_cpu is the |
116 # cross-compiles (compiling the same target for multiple toolchains in the | 117 # architecture of the current toolchain and allows cross-compiles |
117 # same build) to work. | 118 # (compiling the same target for multiple toolchains in the same build) |
| 119 # to work. |
118 target_arch = "arm" | 120 target_arch = "arm" |
119 | 121 |
120 # TODO(brettw) remove this flag (and therefore enable linking all targets) on | 122 # TODO(brettw) remove this flag (and therefore enable linking all targets) on |
121 # Windows when we have sufficient bot capacity. In the meantime, you can | 123 # Windows when we have sufficient bot capacity. In the meantime, you can |
122 # enable linking for local compiles. | 124 # enable linking for local compiles. |
123 link_chrome_on_windows = true | 125 link_chrome_on_windows = true |
124 } | 126 } |
125 | 127 |
126 # TODO(dpranke): Remove these asserts when os and cpu_arch are removed. | 128 # TODO(dpranke): Remove these asserts when os and cpu_arch are removed. |
127 assert(current_cpu == cpu_arch) | 129 assert(current_cpu == cpu_arch) |
128 assert(current_os == os) | 130 assert(current_os == os) |
129 | 131 |
130 # ============================================================================= | 132 # ============================================================================= |
131 # OS DEFINITIONS | 133 # OS DEFINITIONS |
132 # ============================================================================= | 134 # ============================================================================= |
133 # | 135 # |
134 # We set these various is_FOO booleans for convenience in writing OS-based | 136 # We set these various is_FOO booleans for convenience in writing OS-based |
135 # conditions. | 137 # conditions. |
136 # | 138 # |
137 # - is_android, is_chromeos, is_ios, and is_win should be obvious. | 139 # - is_android, is_chromeos, is_ios, and is_win should be obvious. |
138 # - is_mac is set only for desktop Mac. It is not set on iOS. | 140 # - is_mac is set only for desktop Mac. It is not set on iOS. |
139 # - is_posix is true for mac and any Unix-like system (basically everything | 141 # - is_posix is true for mac and any Unix-like system (basically everything |
140 # except Windows). | 142 # except Windows). |
141 # - is_linux is true for desktop Linux and ChromeOS, but not Android (which is | 143 # - is_linux is true for desktop Linux and ChromeOS, but not Android (which is |
142 # generally too different despite being based on the Linux kernel). | 144 # generally too different despite being based on the Linux kernel). |
143 # | 145 # |
144 # Do not add more is_* variants here for random lesser-used Unix systems like | 146 # Do not add more is_* variants here for random lesser-used Unix systems like |
145 # aix or one of the BSDs. If you need to check these, just check the os value | 147 # aix or one of the BSDs. If you need to check these, just check the |
146 # directly. | 148 # current_os value directly. |
147 | 149 |
148 if (os == "win") { | 150 if (current_os == "win") { |
149 is_android = false | 151 is_android = false |
150 is_chromeos = false | 152 is_chromeos = false |
151 is_ios = false | 153 is_ios = false |
152 is_linux = false | 154 is_linux = false |
153 is_mac = false | 155 is_mac = false |
154 is_nacl = false | 156 is_nacl = false |
155 is_posix = false | 157 is_posix = false |
156 is_win = true | 158 is_win = true |
157 } else if (os == "mac") { | 159 } else if (current_os == "mac") { |
158 is_android = false | 160 is_android = false |
159 is_chromeos = false | 161 is_chromeos = false |
160 is_ios = false | 162 is_ios = false |
161 is_linux = false | 163 is_linux = false |
162 is_mac = true | 164 is_mac = true |
163 is_nacl = false | 165 is_nacl = false |
164 is_posix = true | 166 is_posix = true |
165 is_win = false | 167 is_win = false |
166 } else if (os == "android") { | 168 } else if (current_os == "android") { |
167 is_android = true | 169 is_android = true |
168 is_chromeos = false | 170 is_chromeos = false |
169 is_ios = false | 171 is_ios = false |
170 is_linux = false | 172 is_linux = false |
171 is_mac = false | 173 is_mac = false |
172 is_nacl = false | 174 is_nacl = false |
173 is_posix = true | 175 is_posix = true |
174 is_win = false | 176 is_win = false |
175 } else if (os == "chromeos") { | 177 } else if (current_os == "chromeos") { |
176 is_android = false | 178 is_android = false |
177 is_chromeos = true | 179 is_chromeos = true |
178 is_ios = false | 180 is_ios = false |
179 is_linux = true | 181 is_linux = true |
180 is_mac = false | 182 is_mac = false |
181 is_nacl = false | 183 is_nacl = false |
182 is_posix = true | 184 is_posix = true |
183 is_win = false | 185 is_win = false |
184 } else if (os == "nacl") { | 186 } else if (current_os == "nacl") { |
185 # os == "nacl" will be passed by the nacl toolchain definition. It is not | 187 # current_os == "nacl" will be passed by the nacl toolchain definition. |
186 # set by default or on the command line. We treat is as a Posix variant. | 188 # It is not set by default or on the command line. We treat is as a |
| 189 # Posix variant. |
187 is_android = false | 190 is_android = false |
188 is_chromeos = false | 191 is_chromeos = false |
189 is_ios = false | 192 is_ios = false |
190 is_linux = false | 193 is_linux = false |
191 is_mac = false | 194 is_mac = false |
192 is_nacl = true | 195 is_nacl = true |
193 is_posix = true | 196 is_posix = true |
194 is_win = false | 197 is_win = false |
195 } else if (os == "ios") { | 198 } else if (current_os == "ios") { |
196 is_android = false | 199 is_android = false |
197 is_chromeos = false | 200 is_chromeos = false |
198 is_ios = true | 201 is_ios = true |
199 is_linux = false | 202 is_linux = false |
200 is_mac = false | 203 is_mac = false |
201 is_nacl = false | 204 is_nacl = false |
202 is_posix = true | 205 is_posix = true |
203 is_win = false | 206 is_win = false |
204 } else if (os == "linux") { | 207 } else if (current_os == "linux") { |
205 is_android = false | 208 is_android = false |
206 is_chromeos = false | 209 is_chromeos = false |
207 is_ios = false | 210 is_ios = false |
208 is_linux = true | 211 is_linux = true |
209 is_mac = false | 212 is_mac = false |
210 is_nacl = false | 213 is_nacl = false |
211 is_posix = true | 214 is_posix = true |
212 is_win = false | 215 is_win = false |
213 } | 216 } |
214 | 217 |
215 # ============================================================================= | 218 # ============================================================================= |
216 # CPU ARCHITECTURE | 219 # CPU ARCHITECTURE |
217 # ============================================================================= | 220 # ============================================================================= |
218 | 221 |
219 if (is_android) { | 222 if (is_android) { |
220 # TODO(cjhopman): enable this assert once bots are updated to not set | 223 # TODO(cjhopman): enable this assert once bots are updated to not set |
221 # cpu_arch. | 224 # current_cpu. |
222 #assert(cpu_arch == build_cpu_arch, "Android device target architecture should | 225 #assert(current_cpu == host_cpu, "Android device target architecture should |
223 # be set with 'target_arch', not 'cpu_arch'") | 226 # be set with 'target_arch', not 'current_cpu'") |
224 cpu_arch = target_arch | 227 current_cpu = target_arch |
225 } | 228 } |
226 | 229 |
227 # ============================================================================= | 230 # ============================================================================= |
228 # SOURCES FILTERS | 231 # SOURCES FILTERS |
229 # ============================================================================= | 232 # ============================================================================= |
230 # | 233 # |
231 # These patterns filter out platform-specific files when assigning to the | 234 # These patterns filter out platform-specific files when assigning to the |
232 # sources variable. The magic variable |sources_assignment_filter| is applied | 235 # sources variable. The magic variable |sources_assignment_filter| is applied |
233 # to each assignment or appending to the sources variable and matches are | 236 # to each assignment or appending to the sources variable and matches are |
234 # automatcally removed. | 237 # automatcally removed. |
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523 # TOOLCHAIN SETUP | 526 # TOOLCHAIN SETUP |
524 # ============================================================================== | 527 # ============================================================================== |
525 # | 528 # |
526 # Here we set the default toolchain, as well as the variable host_toolchain | 529 # Here we set the default toolchain, as well as the variable host_toolchain |
527 # which will identify the toolchain corresponding to the local system when | 530 # which will identify the toolchain corresponding to the local system when |
528 # doing cross-compiles. When not cross-compiling, this will be the same as the | 531 # doing cross-compiles. When not cross-compiling, this will be the same as the |
529 # default toolchain. | 532 # default toolchain. |
530 | 533 |
531 if (is_win) { | 534 if (is_win) { |
532 # On windows we use the same toolchain for host and target by default. | 535 # On windows we use the same toolchain for host and target by default. |
533 # TODO(dpranke): rename the toolchains to x64 and x86 to match cpu_arch. | 536 # TODO(dpranke): rename the toolchains to x64 and x86 to match current_cpu. |
534 if (cpu_arch == "x64") { | 537 if (current_cpu == "x64") { |
535 host_toolchain = "//build/toolchain/win:64" | 538 host_toolchain = "//build/toolchain/win:64" |
536 } else if (cpu_arch == "x86") { | 539 } else if (current_cpu == "x86") { |
537 host_toolchain = "//build/toolchain/win:32" | 540 host_toolchain = "//build/toolchain/win:32" |
538 } | 541 } |
539 set_default_toolchain("$host_toolchain") | 542 set_default_toolchain("$host_toolchain") |
540 } else if (is_android) { | 543 } else if (is_android) { |
541 # Use clang for the x86/64 Linux host builds. | 544 # Use clang for the x86/64 Linux host builds. |
542 if (build_cpu_arch == "x86" || build_cpu_arch == "x64") { | 545 if (host_cpu == "x86" || host_cpu == "x64") { |
543 host_toolchain = "//build/toolchain/linux:clang_$build_cpu_arch" | 546 host_toolchain = "//build/toolchain/linux:clang_$host_cpu" |
544 } else { | 547 } else { |
545 host_toolchain = "//build/toolchain/linux:$build_cpu_arch" | 548 host_toolchain = "//build/toolchain/linux:$host_cpu" |
546 } | 549 } |
547 set_default_toolchain("//build/toolchain/android:$cpu_arch") | 550 set_default_toolchain("//build/toolchain/android:$current_cpu") |
548 } else if (is_linux) { | 551 } else if (is_linux) { |
549 if (is_clang) { | 552 if (is_clang) { |
550 host_toolchain = "//build/toolchain/linux:clang_$build_cpu_arch" | 553 host_toolchain = "//build/toolchain/linux:clang_$host_cpu" |
551 set_default_toolchain("//build/toolchain/linux:clang_$cpu_arch") | 554 set_default_toolchain("//build/toolchain/linux:clang_$current_cpu") |
552 } else { | 555 } else { |
553 host_toolchain = "//build/toolchain/linux:$build_cpu_arch" | 556 host_toolchain = "//build/toolchain/linux:$host_cpu" |
554 set_default_toolchain("//build/toolchain/linux:$cpu_arch") | 557 set_default_toolchain("//build/toolchain/linux:$current_cpu") |
555 } | 558 } |
556 if (is_chromeos && cros_use_custom_toolchain) { | 559 if (is_chromeos && cros_use_custom_toolchain) { |
557 set_default_toolchain("//build/toolchain/cros:target") | 560 set_default_toolchain("//build/toolchain/cros:target") |
558 } | 561 } |
559 } else if (is_mac) { | 562 } else if (is_mac) { |
560 host_toolchain = "//build/toolchain/mac:clang" | 563 host_toolchain = "//build/toolchain/mac:clang" |
561 set_default_toolchain(host_toolchain) | 564 set_default_toolchain(host_toolchain) |
562 } else if (is_ios) { | 565 } else if (is_ios) { |
563 host_toolchain = "//build/toolchain/mac:host_clang" | 566 host_toolchain = "//build/toolchain/mac:host_clang" |
564 set_default_toolchain("//build/toolchain/mac:clang") | 567 set_default_toolchain("//build/toolchain/mac:clang") |
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764 } | 767 } |
765 if (defined(invoker.testonly)) { | 768 if (defined(invoker.testonly)) { |
766 testonly = invoker.testonly | 769 testonly = invoker.testonly |
767 } | 770 } |
768 if (defined(invoker.visibility)) { | 771 if (defined(invoker.visibility)) { |
769 visibility = invoker.visibility | 772 visibility = invoker.visibility |
770 } | 773 } |
771 } | 774 } |
772 } | 775 } |
773 } | 776 } |
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