# ##############################################################################
# libs/libxx/libcxx.cmake
#
# Licensed to the Apache Software Foundation (ASF) under one or more contributor
# license agreements.  See the NOTICE file distributed with this work for
# additional information regarding copyright ownership.  The ASF licenses this
# file to you 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.
#
# ##############################################################################

if(NOT EXISTS ${CMAKE_CURRENT_LIST_DIR}/libcxx/.git)

  set(LIBCXX_VERSION 12.0.0)

  FetchContent_Declare(
    libcxx
    DOWNLOAD_NAME "libcxx-${LIBCXX_VERSION}.src.tar.xz"
    DOWNLOAD_DIR ${CMAKE_CURRENT_LIST_DIR}
    URL "https://github.com/llvm/llvm-project/releases/download/llvmorg-${LIBCXX_VERSION}/libcxx-${LIBCXX_VERSION}.src.tar.xz"
        SOURCE_DIR
        ${CMAKE_CURRENT_LIST_DIR}/libcxx
        BINARY_DIR
        ${CMAKE_BINARY_DIR}/libs/libc/libcxx
        CONFIGURE_COMMAND
        ""
        BUILD_COMMAND
        ""
        INSTALL_COMMAND
        ""
        TEST_COMMAND
        ""
    DOWNLOAD_NO_PROGRESS true
    TIMEOUT 30)

  FetchContent_GetProperties(libcxx)

  if(NOT libcxx_POPULATED)
    FetchContent_Populate(libcxx)
  endif()

  add_custom_target(libcxx_patch)

  if(NOT EXISTS ${CMAKE_CURRENT_LIST_DIR}/.libcxx_patch)
    add_custom_command(
      TARGET libcxx_patch
      PRE_BUILD
      COMMAND touch ${CMAKE_CURRENT_LIST_DIR}/.libcxx_patch
      COMMAND
        patch -p0 -d ${CMAKE_CURRENT_LIST_DIR} <
        ${CMAKE_CURRENT_LIST_DIR}/0001-Remove-the-locale-fallback-for-NuttX.patch
        > /dev/null || (exit 0)
      COMMAND
        patch -p0 -d ${CMAKE_CURRENT_LIST_DIR} <
        ${CMAKE_CURRENT_LIST_DIR}/0001-libc-avoid-the-waring-__EXCEPTIONS-is-not-defined-ev.patch
        > /dev/null || (exit 0)
      COMMAND
        patch -p1 -d ${CMAKE_CURRENT_LIST_DIR} <
        ${CMAKE_CURRENT_LIST_DIR}/0001-libcxx-Rename-PS-macro-to-avoid-clashing-with-Xtensa.patch
        > /dev/null || (exit 0) DEPENDS libcxx)

    if(CONFIG_LIBC_ARCH_ATOMIC)
      add_custom_command(
        TARGET libcxx_patch
        POST_BUILD
        COMMAND
          patch -p1 -d ${CMAKE_CURRENT_LIST_DIR} <
          ${CMAKE_CURRENT_LIST_DIR}/0002-Omit-atomic_-un-signed_lock_free-if-unsupported.patch
          > /dev/null || (exit 0))
    endif()

  endif()

endif()

set_property(
  TARGET nuttx
  APPEND
  PROPERTY NUTTX_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_LIST_DIR}/libcxx/include)

add_compile_definitions(_LIBCPP_BUILDING_LIBRARY)
if(CONFIG_LIBSUPCXX)
  add_compile_definitions(__GLIBCXX__)
endif()

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

set(SRCS)
set(SRCSTMP)

file(GLOB SRCS ${CMAKE_CURRENT_LIST_DIR}/libcxx/src/*.cpp)
file(GLOB SRCSTMP ${CMAKE_CURRENT_LIST_DIR}/libcxx/src/experimental/*.cpp)
list(APPEND SRCS ${SRCSTMP})
file(GLOB SRCSTMP ${CMAKE_CURRENT_LIST_DIR}/libcxx/src/filesystem/*.cpp)
list(APPEND SRCS ${SRCSTMP})

set_source_files_properties(libcxx/src/barrier.cpp PROPERTIES COMPILE_FLAGS
                                                              -Wno-shadow)
set_source_files_properties(libcxx/src/locale.cpp PROPERTIES COMPILE_FLAGS
                                                             -Wno-shadow)
set_source_files_properties(libcxx/src/filesystem/directory_iterator.cpp
                            PROPERTIES COMPILE_FLAGS -Wno-shadow)
set_source_files_properties(libcxx/src/filesystem/operations.cpp
                            PROPERTIES COMPILE_FLAGS -Wno-shadow)

nuttx_add_system_library(libcxx)
target_sources(libcxx PRIVATE ${SRCS})

add_dependencies(libcxx libcxx_patch)