third_party/boringssl/BUILD.gn

# Copyright 2021 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
#     https:#www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

import("//build_overrides/pigweed.gni")
import("$dir_pw_build/target_types.gni")
import("BUILD.generated.gni")

group("boringssl_baremetal") {
  public_deps = [
    ":crypto_lib_baremetal",
    ":ssl_lib_baremetal",
  ]
}

library_common_vars = {
  public_configs = [ ":boringssl_public_config" ]
  include_dirs = [ "src/include" ]
  configs = [ ":boringssl_internal_config" ]
}

crypto_library_common_vars = {
  forward_variables_from(library_common_vars, "*")
  sources = crypto_sources + [ "boringssl_utils.cc" ]
  public = crypto_headers + [ "public/boringssl/boringssl_utils.h" ]
}

ssl_library_common_vars = {
  forward_variables_from(library_common_vars, "*")
  sources = ssl_sources
  public = ssl_headers
}

pw_source_set("crypto_lib_baremetal") {
  forward_variables_from(crypto_library_common_vars, "*")

  # Remove sources that require file system and posix socket support
  sources -= [
    "src/crypto/bio/connect.c",
    "src/crypto/bio/fd.c",
    "src/crypto/bio/socket.c",
    "src/crypto/bio/socket_helper.c",
  ]
  public_configs += [ ":config_baremetal" ]
}

pw_source_set("ssl_lib_baremetal") {
  forward_variables_from(ssl_library_common_vars, "*")

  # ssl_lib.c includes sys/socket.h which needs to be faked
  include_dirs += [ "baremetal_sysdeps/" ]
  public_deps = [ ":crypto_lib_baremetal" ]
}

# configs

config("boringssl_public_config") {
  include_dirs = [
    "src/include",
    "public",
  ]
  cflags = [
    "-Wno-cast-qual",
    "-Wno-ignored-qualifiers",
  ]
}

config("boringssl_internal_config") {
  visibility = [ ":*" ]
  defines = [
    "BORINGSSL_ALLOW_CXX_RUNTIME",
    "BORINGSSL_IMPLEMENTATION",
    "BORINGSSL_NO_STATIC_INITIALIZER",
    "BORINGSSL_SHARED_LIBRARY",
    "OPENSSL_SMALL",
    "OPENSSL_NO_ASM",
  ]
  cflags = [
    "-Wno-unused-function",
    "-Wno-conversion",
    "-Wno-unused-parameter",
    "-Wno-char-subscripts",
  ]
  cflags_cc = [
    "-fpermissive",

    # To get through the -Werror=permissive error
    "-Wno-error",
  ]
  configs = [ ":boringssl_public_config" ]
}

config("config_baremetal") {
  defines = [ "OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED" ]
}