# Copyright 2021 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

android_root = "//third_party/android/platform"

config("linker_config") {
  cflags = [
    "-fno-stack-protector",
    "-Wstrict-overflow=5",
    "-fvisibility=hidden",
  ]

  asmflags = [
    "-fno-stack-protector",
    "-Wstrict-overflow=5",
    "-fvisibility=hidden",
    "-Wall",
    "-Wextra",
    "-Wunused",
    "-Werror",
  ]

  cflags_cc = [ "-Wold-style-cast" ]

  include_dirs = [
    "$android_root/bionic/libc",
    "$android_root/bionic/libc/async_safe/include",
    "$android_root/system/core/libcutils/include",
  ]

  configs = [
    "$android_root/bionic/libc:bionic_config",
    "$android_root/system/libbase:headers",
  ]
}

source_set("main") {
  visibility = [ ":*" ]

  sources = ["linker_main.cpp"]

  # Ensure that the compiler won't insert string function calls before ifuncs are resolved.
  # TODO: If we add this flag, the compiler doesn't find bionic's limits.h header.
  # cflags = ["-ffreestanding"]

  configs += [
    ":linker_config",
  ]
}

source_set("linker") {
  sources = [
    "dlfcn.cpp",
    "linker.cpp",
    "linker_block_allocator.cpp",
    "linker_cfi.cpp",
    "linker_config.cpp",
    "linker_debug.cpp",
    "linker_dlwarning.cpp",
    "linker_gdb_support.cpp",
    "linker_globals.cpp",
    "linker_libc_support.c",
    "linker_libcxx_support.cpp",
    "linker_logger.cpp",
    "linker_mapped_file_fragment.cpp",
    "linker_namespaces.cpp",
    "linker_note_gnu_property.cpp",
    "linker_phdr.cpp",
    "linker_relocate.cpp",
    "linker_sdk_versions.cpp",
    "linker_soinfo.cpp",
    "linker_tls.cpp",
    "linker_utils.cpp",
    "rt.cpp",
  ]

  if (target_cpu == "arm64") {
    sources += [
      # "arch/arm64/begin.S",
      "arch/arm64/tlsdesc_resolver.S",
      "arch/arm_neon/linker_gnu_hash_neon.cpp",
    ]
  }

  if (target_cpu == "x64") {
    # sources += [ "arch/x86_64/begin.S" ]
  }

  deps = [
    ":main",
  ]

  configs += [
    ":linker_config",
  ]
}