third_party/pigweed/repo/pw_toolchain/universal_tools.gni

   1 # Copyright 2020 The Pigweed Authors
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License"); you may not
   4 # use this file except in compliance with the License. You may obtain a copy of
   5 # the License at
   6 #
   7 #     https://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, WITHOUT
  11 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  12 # License for the specific language governing permissions and limitations under
  13 # the License.
  14
  15 import("//build_overrides/pigweed.gni")
  16
  17 pw_universal_copy = {
  18   if (host_os == "win") {
  19     cp_command = "cp -af {{source}} {{output}}"
  20
  21     # Use python script in absence of cp command.
  22     copy_tool_path =
  23         rebase_path(dir_pw_toolchain) + "/py/pw_toolchain/copy_with_metadata.py"
  24     fallback_command = "python $copy_tool_path {{source}} {{output}}"
  25
  26     command = "cmd /c \"($cp_command > NUL 2>&1) || ($fallback_command)\""
  27   } else {
  28     # Use a hard link if possible as this is faster. Also, Mac doesn't
  29     # preserve timestamps properly with cp -af.
  30     fallback_command = string_join(" ",
  31                                    [
  32                                      "rm -rf",
  33                                      "{{output}}",
  34                                      "&&",
  35                                      "cp -af",
  36                                      "{{source}}",
  37                                      "{{output}}",
  38                                    ])
  39     command = string_join(" ",
  40                           [
  41                             "ln -f",
  42                             "{{source}}",
  43                             "{{output}}",
  44                             "2>/dev/null",
  45                             "||",
  46                             "($fallback_command)",
  47                           ])
  48   }
  49   description = "cp {{source}} {{output}}"
  50 }
  51
  52 pw_universal_stamp = {
  53   if (host_os == "win") {
  54     command = "cmd /c type nul > \"{{output}}\""
  55   } else {
  56     command = "touch {{output}}"
  57   }
  58   description = "stamp {{output}}"
  59 }