if(NOT ChibiOS_FIND_COMPONENTS)
    SET(ChibiOS_FIND_COMPONENTS nil hal st osless)
    message(STATUS "No ChibiOS components specified, using default: ${ChibiOS_FIND_COMPONENTS}")
endif()


list(FIND ChibiOS_FIND_COMPONENTS nil ChibiOS_FIND_COMPONENTS_nil)
list(FIND ChibiOS_FIND_COMPONENTS rt ChibiOS_FIND_COMPONENTS_rt)
list(FIND ChibiOS_FIND_COMPONENTS osless ChibiOS_FIND_COMPONENTS_osless)
list(FIND ChibiOS_FIND_COMPONENTS hal ChibiOS_FIND_COMPONENTS_hal)
list(FIND ChibiOS_FIND_COMPONENTS st ChibiOS_FIND_COMPONENTS_st)

if((NOT (${ChibiOS_FIND_COMPONENTS_nil} LESS 0)) AND (NOT (${ChibiOS_FIND_COMPONENTS_rt} LESS 0)))
  message(FATAL_ERROR "Cannot use RT and Nil kernel at the same time")
endif()
if(NOT (${ChibiOS_FIND_COMPONENTS_nil} LESS 0))
  SET(CHIBIOS_KERNEL nil)
  add_definitions(-DCHIBIOS_KERNEL_NIL=TRUE)
elseif(NOT (${ChibiOS_FIND_COMPONENTS_rt} LESS 0))
  SET(CHIBIOS_KERNEL rt)
  add_definitions(-DCHIBIOS_KERNEL_RT=TRUE)
elseif(NOT (${ChibiOS_FIND_COMPONENTS_osless} LESS 0))
  SET(CHIBIOS_KERNEL osless)
  add_definitions(-DCHIBIOS_KERNEL_OSLESS=TRUE)
else()
  message(FATAL_ERROR "No OS selected")
endif()

if(${ChibiOS_FIND_COMPONENTS_hal} LESS 0)
  list(APPEND ChibiOS_FIND_COMPONENTS hal)
endif()

if(${ChibiOS_FIND_COMPONENTS_st} LESS 0)
  list(APPEND ChibiOS_FIND_COMPONENTS st)
endif()

include(ChibiOS16_LD)
include(ChibiOS16_HAL)


if(${CHIBIOS_KERNEL} STREQUAL rt)
  include(ChibiOS16_RT)
elseif(${CHIBIOS_KERNEL} STREQUAL nil)
  include(ChibiOS16_NIL)
elseif(${CHIBIOS_KERNEL} STREQUAL osless)
  include(ChibiOS16_OSLESS)
endif()

include(ChibiOS16_Various)

SET(CHIBIOS_COMPONENTS nil rt hal osless ${CHIBIOS_HAL_MODULES} ${CHIBIOS_HAL_LIB_MODULES} ${CHIBIOS_VARIOUS_MODULES})

if(NOT ChibiOS_LINKER_SCRIPT)
    message(STATUS "ChibiOS doesn't have linker script for your chip, please specify it directly using ChibiOS_LINKER_SCRIPT variable.")
endif()

set(components_definitions 
	HAL_USE_PAL
	HAL_USE_ADC
	HAL_USE_CAN
	HAL_USE_DAC
	HAL_USE_EXT
	HAL_USE_GPT
	HAL_USE_I2C
	HAL_USE_I2S
	HAL_USE_ICU
	HAL_USE_MAC
	HAL_USE_MMC_SPI
	HAL_USE_PWM
	HAL_USE_RTC
	HAL_USE_SDC
	HAL_USE_SERIAL
	HAL_USE_SERIAL_USB
	HAL_USE_SPI
	HAL_USE_UART
	HAL_USE_USB
	HAL_USE_WDG)

set(HAL_USE_PAL "FALSE")
set(HAL_USE_ADC "FALSE")
set(HAL_USE_CAN "FALSE")
set(HAL_USE_DAC "FALSE")
set(HAL_USE_EXT "FALSE")
set(HAL_USE_GPT "FALSE")
set(HAL_USE_I2C "FALSE")
set(HAL_USE_I2S "FALSE")
set(HAL_USE_ICU "FALSE")
set(HAL_USE_MAC "FALSE")
set(HAL_USE_MMC_SPI "FALSE")
set(HAL_USE_PWM "FALSE")
set(HAL_USE_RTC "FALSE")
set(HAL_USE_SDC "FALSE")
set(HAL_USE_SERIAL "FALSE")
set(HAL_USE_SERIAL_USB "FALSE")
set(HAL_USE_SPI "FALSE")
set(HAL_USE_UART "FALSE")
set(HAL_USE_USB "FALSE")
set(HAL_USE_WDG "FALSE")

foreach(comp ${ChibiOS_FIND_COMPONENTS})
	list(FIND CHIBIOS_COMPONENTS ${comp} INDEX)
	if(INDEX EQUAL -1)
		message(FATAL_ERROR "Unknown ChibiOS component: ${comp}\nSupported ChibiOS components: ${CHIBIOS_COMPONENTS}")
	endif()

	string(TOUPPER "${comp}" MODULE_UPPER)
	set(HAL_USE_${MODULE_UPPER} "TRUE")

	foreach(source ${CHIBIOS_${comp}_SOURCES})
		FIND_FILE(CHIBIOS_${comp}_${source} NAMES ${source} PATHS ${CHIBIOS_${comp}_SEARCH_PATH} NO_DEFAULT_PATH CMAKE_FIND_ROOT_PATH_BOTH)
		list(APPEND ChibiOS_SOURCES ${CHIBIOS_${comp}_${source}})
	endforeach()

	if(CHIBIOS_${comp}_SEARCH_HEADERS)
		foreach(header ${CHIBIOS_${comp}_SEARCH_HEADERS})
			FIND_PATH(CHIBIOS_${comp}_${header}_INCLUDE_DIR NAMES ${header} PATHS ${CHIBIOS_${comp}_SEARCH_PATH} NO_DEFAULT_PATH CMAKE_FIND_ROOT_PATH_BOTH)
			list(APPEND ChibiOS_INCLUDE_DIRS ${CHIBIOS_${comp}_${header}_INCLUDE_DIR})
		endforeach()
	endif()
	if(CHIBIOS_${comp}_PLATFORM_SEARCH_HEADERS)
		foreach(header ${CHIBIOS_${comp}_PLATFORM_SEARCH_HEADERS})
			FIND_PATH(CHIBIOS_${comp}_PLATFORM_${header}_INCLUDE_DIR NAMES ${header} PATHS ${CHIBIOS_${comp}_PLATFORM_SEARCH_PATH} NO_DEFAULT_PATH CMAKE_FIND_ROOT_PATH_BOTH)
			list(APPEND ChibiOS_INCLUDE_DIRS ${CHIBIOS_${comp}_PLATFORM_${header}_INCLUDE_DIR})
		endforeach()
	endif()

    if(CHIBIOS_${comp}_PLATFORM_SOURCES)
        foreach(source ${CHIBIOS_${comp}_PLATFORM_SOURCES})
            FIND_FILE(CHIBIOS_${comp}_PLATFORM_${source} NAMES ${source} PATHS ${CHIBIOS_${comp}_PLATFORM_SEARCH_PATH} NO_DEFAULT_PATH CMAKE_FIND_ROOT_PATH_BOTH)
            list(APPEND ChibiOS_SOURCES ${CHIBIOS_${comp}_PLATFORM_${source}})
        endforeach()
    endif()
endforeach()

foreach(comp ${components_definitions})
	add_definitions(-D${comp}=${${comp}})
endforeach()