build_overrides/compiler/BUILD.gn

# Copyright 2022 The PDFium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# A simplified config to consistently use C++17 and override the config
# in //build/config/compiler, which is using C++20 by default on many platforms.

assert(!is_nacl)

config("force_cxx17") {
  cflags_cc = []

  if (is_linux || is_chromeos || is_android || current_os == "aix") {
    if (is_clang) {
      standard_prefix = "c"
    } else {
      standard_prefix = "gnu"
    }
    cflags_cc += [ "-std=${standard_prefix}++17" ]
  } else if (is_win) {
    cflags_cc += [ "/std:c++17" ]
  } else {
    cflags_cc += [ "-std=c++17" ]
  }
}