third_party/pigweed/repo/targets/arduino/BUILD.gn

   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 import("$dir_pw_arduino_build/arduino.gni")
  18 import("$dir_pw_build/target_types.gni")
  19 import("$dir_pw_docgen/docs.gni")
  20 import("$dir_pw_toolchain/generate_toolchain.gni")
  21 pw_doc_group("target_docs") {
  22   sources = [ "target_docs.rst" ]
  23 }
  24
  25 if (pw_arduino_build_CORE_PATH != "") {
  26   import("target_toolchains.gni")
  27
  28   generate_toolchains("target_toolchains") {
  29     toolchains = pw_target_toolchain_arduino_list
  30   }
  31
  32   if (current_toolchain != default_toolchain) {
  33     config("arduino_build") {
  34       # Debug: Print out arduinobuilder.py args
  35       # print(string_join(" ", [rebase_path(arduino_builder_script)] + arduino_show_command_args))
  36
  37       # Run prebuilds
  38       # TODO(tonymd) This only needs to be run once but it's happening multiple times.
  39       exec_script(arduino_builder_script,
  40                   filter_exclude(arduino_run_command_args,
  41                                  [ "--save-config" ]) + [ "--run-prebuilds" ],
  42                   "string")
  43
  44       _exclude_flags = [ "-std=gnu++14" ]
  45
  46       _cflags = exec_script(arduino_builder_script,
  47                             arduino_show_command_args + [ "--c-flags" ],
  48                             "list lines")
  49       cflags = filter_exclude(_cflags, _exclude_flags)
  50
  51       asmflags = exec_script(arduino_builder_script,
  52                              arduino_show_command_args + [ "--s-only-flags" ],
  53                              "list lines")
  54
  55       _cflags_cc =
  56           exec_script(arduino_builder_script,
  57                       arduino_show_command_args + [ "--cpp-only-flags" ],
  58                       "list lines")
  59       cflags_cc = filter_exclude(_cflags_cc, _exclude_flags)
  60
  61       _ldflags = exec_script(arduino_builder_script,
  62                              arduino_show_command_args + [ "--ld-flags" ],
  63                              "list lines")
  64       ldflags =
  65           filter_exclude(_ldflags,
  66                          [
  67                            # Remove arguments ending in 'core.a', for example:
  68                            # C:/Users/username/pigweed/out/core.a
  69                            "*core.a\b",
  70
  71                            # Remove .elf output file, for example:
  72                            # -o C:/Users/username/pigweed/out/pigweed.elf
  73                            "\b-o\b",
  74                            "*.elf\b",
  75
  76                            # Remove the Arduino {object_files} variable
  77                            "{object_files}",
  78                          ])
  79
  80       # TODO(tonymd): Determine if libs are needed.
  81       #   Teensy4 core recipe uses: '-larm_cortexM7lfsp_math -lm -lstdc++'
  82       libs = filter_exclude(
  83               exec_script(arduino_builder_script,
  84                           arduino_show_command_args + [ "--ld-lib-names" ],
  85                           "list lines"),
  86               # Exclude stdc++ which causes linking errors for teensy cores.
  87               [ "\bstdc++\b" ])
  88     }
  89
  90     pw_source_set("pre_init") {
  91       sources = [ "init.cc" ]
  92       public_deps = [
  93         "$dir_pw_sys_io_arduino",
  94         "$dir_pw_third_party/arduino:arduino_core_sources",
  95       ]
  96       deps = [
  97         "$dir_pw_arduino_build:arduino_init.facade",
  98         "$dir_pw_preprocessor",
  99       ]
 100     }
 101
 102     pw_source_set("system_rpc_server") {
 103       deps = [
 104         "$dir_pw_hdlc:pw_rpc",
 105         "$dir_pw_hdlc:rpc_channel_output",
 106         "$dir_pw_rpc/system_server:facade",
 107         "$dir_pw_stream:sys_io_stream",
 108         dir_pw_log,
 109       ]
 110       sources = [ "system_rpc_server.cc" ]
 111     }
 112   }
 113 } else {
 114   config("arduino_build") {
 115   }
 116   group("pre_init") {
 117   }
 118 }