# Copyright 2021 The Cobalt Authors. All Rights Reserved.
#
# 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
#
#     http://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.

static_library("unwind_starboard") {
  sources = [
    "src/AddressSpace.hpp",
    "src/assembly.h",
    "src/CompactUnwinder.hpp",
    "src/config.h",
    "src/dwarf2.h",
    "src/DwarfInstructions.hpp",
    "src/DwarfParser.hpp",
    "src/EHHeaderParser.hpp",
    "src/libunwind.cpp",
    "src/libunwind_ext.h",
    "src/Registers.hpp",
    "src/RWMutex.hpp",
    "src/UnwindCursor.hpp",
    "src/Unwind-EHABI.cpp",
    "src/Unwind-EHABI.h",
    "src/UnwindLevel1.c",
    "src/UnwindLevel1-gcc-ext.c",
    "src/UnwindRegistersRestore.S",
    "src/UnwindRegistersSave.S",
    "src/Unwind-sjlj.c",
  ]

  if (is_apple) {
    sources += [ "src/Unwind_AppleExtras.cpp" ]
  }

  public_deps = [
    "//starboard/common",
    "//starboard/elf_loader:evergreen_info",
  ]

  configs += [ ":internal_config" ]
  all_dependent_configs = [ ":dependents_config" ]
}

config("dependents_config") {
  include_dirs = [ "include" ]
  defines = [
    # Ensure that __external_threading is used for threading support.
    "_LIBCPP_HAS_THREAD_API_EXTERNAL",
    "LLVM_PATH=" + rebase_path("//third_party/llvm-project/llvm/", root_build_dir),
  ]
}

config("internal_config") {
  configs = [
    ":dependents_config",
    "//starboard/build/config:starboard_implementation",
  ]

  cflags = [ "-Wno-unused-command-line-argument" ]
  cflags_cc = [
    "-std=c++11",
    "-fPIC",
    "-Werror=return-type",
    "-fvisibility-inlines-hidden",
    "-funwind-tables",
    "-W",
    "-Wall",
    "-Wextra",
    "-Wwrite-strings",
    "-Wno-error",
    "-Wno-unused-parameter",
  ]
  defines = [
    # Build libunwind with concurrency built upon Starboard mutexes and
    # condition variables.
    "_LIBUNWIND_HAS_STARBOARD_THREADS",
  ]
}