# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.

# This module is shared by multiple languages; use include blocker.
if(_Tasking_CMAKE_LOADED)
  return()
endif()
set(_Tasking_CMAKE_LOADED TRUE)
include(Compiler/CMakeCommonCompilerMacros)

set(CMAKE_EXECUTABLE_SUFFIX ".elf")
set(CMAKE_STATIC_LIBRARY_SUFFIX ".a")
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)

set_property(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS FALSE)
set(BUILD_SHARED_LIBS FALSE CACHE BOOL "")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
set(CMAKE_LINK_SEARCH_START_STATIC TRUE)

function(__tasking_set_processor_list lang out_var)
  execute_process(COMMAND "${CMAKE_${lang}_COMPILER}" --cpu-list
    OUTPUT_VARIABLE processor_list
    ERROR_VARIABLE processor_list)
  string(REGEX MATCHALL "  +([A-Za-z0-9_]+)[^\n]+\n" processor_list "${processor_list}")
  list(POP_FRONT processor_list)
  string(REGEX REPLACE "  +([A-Za-z0-9_]+)[^\n]+\n" "\\1" processor_list "${processor_list}")
  set(${out_var} "${processor_list}" PARENT_SCOPE)
endfunction()

function(__tasking_check_processor processor list out_var)
  string(TOLOWER "${processor}" processor)
  if(processor IN_LIST list)
    set(${out_var} TRUE PARENT_SCOPE)
  else()
    set(${out_var} FALSE PARENT_SCOPE)
  endif()
endfunction()

if(NOT CMAKE_TASKING_TOOLSET)
  set(CMAKE_TASKING_TOOLSET "Standalone")
endif()

macro(__compiler_tasking lang)

  if(CMAKE_SYSTEM_PROCESSOR)
    if(NOT _TASKING_${lang}_PROCESSOR_LIST)
      __tasking_set_processor_list(${lang} _TASKING_${lang}_PROCESSOR_LIST)
    endif()
    __tasking_check_processor(${CMAKE_SYSTEM_PROCESSOR} "${_TASKING_${lang}_PROCESSOR_LIST}" _TASKING_${lang}_VALID_PROCESSOR)
    if(${_TASKING_${lang}_VALID_PROCESSOR})
      string(APPEND CMAKE_${lang}_FLAGS_INIT " -C${CMAKE_SYSTEM_PROCESSOR}")
    else()
      message(FATAL_ERROR "Invalid processor ${CMAKE_SYSTEM_PROCESSOR} specified.\n"
        "Supported processors: ${_TASKING_${lang}_PROCESSOR_LIST}")
    endif()
  endif()

  set(CMAKE_${lang}_VERBOSE_FLAG "-v")
  set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC")
  set(CMAKE_${lang}_LINKER_WRAPPER_FLAG "-Wl" " ")
  set(CMAKE_${lang}_RESPONSE_FILE_LINK_FLAG "-f ")
  set(CMAKE_DEPFILE_FLAGS_${lang} "--dep-file=<DEP_FILE>")
  set(CMAKE_${lang}_COMPILE_OPTIONS_WARNING_AS_ERROR "--warning-as-errors")

  string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
  string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -O0 -g")
  string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -O2 -t4 -DNDEBUG")
  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2 -t2 -DNDEBUG")
  string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -t2 -g -DNDEBUG")

  set(CMAKE_${lang}_ARCHIVE_CREATE "\"${CMAKE_${lang}_COMPILER_AR}\" -r <TARGET> <OBJECTS>")
  set(CMAKE_${lang}_ARCHIVE_APPEND "\"${CMAKE_${lang}_COMPILER_AR}\" -r <TARGET> <OBJECTS>")
  set(CMAKE_${lang}_ARCHIVE_FINISH "")

  set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -cs <SOURCE> -o <ASSEMBLY_SOURCE>")
  set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -Ep <SOURCE> > <PREPROCESSED_SOURCE>")

  set(CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "${CMAKE_${lang}_COMPILER}")
  if(CMAKE_${lang}_COMPILER_ARG1)
    separate_arguments(_COMPILER_ARGS NATIVE_COMMAND "${CMAKE_${lang}_COMPILER_ARG1}")
    list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND ${_COMPILER_ARGS})
    unset(_COMPILER_ARGS)
  endif()
  list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "-Ep" "${CMAKE_ROOT}/Modules/CMakeCXXCompilerABI.cpp")

endmacro()