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      1 # Copyright (C) 2017 The Android Open Source Project
      2 #
      3 # Licensed under the Apache License, Version 2.0 (the "License");
      4 # you may not use this file except in compliance with the License.
      5 # You may obtain a copy of the License at
      6 #
      7 #      http://www.apache.org/licenses/LICENSE-2.0
      8 #
      9 # Unless required by applicable law or agreed to in writing, software
     10 # distributed under the License is distributed on an "AS IS" BASIS,
     11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 # See the License for the specific language governing permissions and
     13 # limitations under the License.
     14 
     15 declare_args() {
     16   is_debug = true
     17   is_clang = true
     18 }
     19 
     20 declare_args() {
     21   ar = "ar"
     22 }
     23 
     24 # Platform detection
     25 if (target_os == "") {
     26   target_os = host_os
     27 }
     28 if (current_os == "") {
     29   current_os = target_os
     30 }
     31 
     32 is_android = current_os == "android"
     33 is_linux = current_os == "linux"
     34 is_linux_host = host_os == "linux"
     35 is_mac = current_os == "mac"
     36 
     37 if (target_cpu == "") {
     38   target_cpu = host_cpu
     39   if (is_android) {
     40     target_cpu = "arm"
     41   }
     42 }
     43 if (current_cpu == "") {
     44   current_cpu = target_cpu
     45 }
     46 
     47 default_configs = [
     48   "//gn/standalone:debug_symbols",
     49   "//gn/standalone:default",
     50   "//gn/standalone:extra_warnings",
     51   "//gn/standalone:no_exceptions",
     52   "//gn/standalone:no_rtti",
     53   "//gn/standalone:visibility_hidden",
     54   "//gn/standalone/libc++:config",
     55   "//gn/standalone/sanitizers:sanitizers_cflags",
     56 ]
     57 
     58 if (!is_debug) {
     59   default_configs -= [ "//gn/standalone:debug_symbols" ]
     60   default_configs += [ "//gn/standalone:release" ]
     61 }
     62 
     63 set_defaults("source_set") {
     64   configs = default_configs
     65 }
     66 
     67 set_defaults("static_library") {
     68   configs = default_configs
     69 }
     70 
     71 # Realistically the only shared_library that we build right now is libc++.so
     72 # when use_custom_libcxx=true (on Linux). Hence don't add a dependency on
     73 # libc++ itself on these targets.
     74 set_defaults("shared_library") {
     75   configs = default_configs
     76   configs += [ "//gn/standalone:shared_library" ]
     77 }
     78 
     79 set_defaults("executable") {
     80   configs = default_configs
     81   configs += [ "//gn/standalone:executable" ]
     82 }
     83 
     84 set_default_toolchain("//gn/standalone/toolchain:gcc_like")
     85 host_toolchain = "//gn/standalone/toolchain:gcc_like_host"
     86