include(RunCMake)

if(RunCMake_GENERATOR MATCHES "Makefile|Ninja")
  file(GLOB _iar_toolchains
    "${CMake_TEST_IAR_TOOLCHAINS}/bx*-*/*/bin/icc*" )
  if(_iar_toolchains STREQUAL "")
    message(FATAL_ERROR "Could not find any IAR toolchains at: ${CMake_TEST_IAR_TOOLCHAINS}.")
  endif()
endif()

function(run_toolchain case)
  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${case}-build)
  run_cmake_with_options(${case} ${ARGN})
  set(RunCMake_TEST_NO_CLEAN 1)
  run_cmake_command(${case}-build ${CMAKE_COMMAND} --build .)
endfunction()

foreach(_iar_toolchain IN LISTS _iar_toolchains)
  message(STATUS "Found IAR toolchain: ${_iar_toolchain}")
  cmake_path(GET _iar_toolchain PARENT_PATH BIN_DIR)
  cmake_path(GET BIN_DIR PARENT_PATH TOOLKIT_DIR)
  cmake_path(GET TOOLKIT_DIR FILENAME ARCH)

  # Sets the minimal requirements for linking each target architecture
  if(ARCH STREQUAL "avr")
    string(CONCAT LINK_OPTS
      "-I\"${TOOLKIT_DIR}/lib\" "
      "-f \"${TOOLKIT_DIR}/src/template/lnk3s.xcl\" "
    )
  elseif(ARCH STREQUAL "rl78")
    string(CONCAT LINK_OPTS
      "--config_def _STACK_SIZE=256 "
      "--config_def _NEAR_HEAP_SIZE=0x400 "
      "--config_def _FAR_HEAP_SIZE=4096 "
      "--config_def _HUGE_HEAP_SIZE=0 "
      "--config_def _NEAR_CONST_LOCATION_START=0x2000 "
      "--config_def _NEAR_CONST_LOCATION_SIZE=0x6F00 "
      "--define_symbol _NEAR_CONST_LOCATION=0 "
      "--config \"${TOOLKIT_DIR}/config/lnkrl78_s3.icf\" "
    )
  elseif(ARCH STREQUAL "rh850")
    string(CONCAT LINK_OPTS
      "--config_def CSTACK_SIZE=0x1000 "
      "--config_def HEAP_SIZE=0x1000 "
      "--config_def _SELF_SIZE=0x20000 "
      "--config \"${TOOLKIT_DIR}/config/lnkr7f701401.icf\" "
    )
  else()
    set(LINK_OPTS "")
  endif()

  # Set IAR Assembler (ILINK || XLINK)
  find_program(IAR_ASSEMBLER
    NAMES iasm${ARCH} a${ARCH}
    PATHS ${BIN_DIR}
    REQUIRED )

  run_toolchain(iar-c
    -DCMAKE_SYSTEM_NAME=Generic
    -DCMAKE_C_COMPILER=${_iar_toolchain}
    -DCMAKE_EXE_LINKER_FLAGS=${LINK_OPTS}
  )

  run_toolchain(iar-cxx
    -DCMAKE_SYSTEM_NAME=Generic
    -DCMAKE_CXX_COMPILER=${_iar_toolchain}
    -DCMAKE_EXE_LINKER_FLAGS=${LINK_OPTS}
  )

  run_toolchain(iar-asm
    -DCMAKE_SYSTEM_NAME=Generic
    -DCMAKE_ASM_COMPILER=${IAR_ASSEMBLER}
  )

  run_toolchain(iar-lib
    -DCMAKE_SYSTEM_NAME=Generic
    -DCMAKE_C_COMPILER=${_iar_toolchain}
    -DCMAKE_EXE_LINKER_FLAGS=${LINK_OPTS}
  )
endforeach()