cmake_minimum_required(VERSION 3.13)

cmake_policy(SET CMP0054 NEW)

if (NOT C6416_SDK_PATH)
	set(C6416_SDK_PATH ${CMAKE_CURRENT_LIST_DIR})
endif()

get_filename_component(C6416_SDK_PATH "${C6416_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
set(C6416_SDK_PATH ${CMAKE_CURRENT_LIST_DIR} CACHE PATH "Path to C6416 SDK" FORCE)

# set a default build type if none was specified
if (NOT DEFINED CMAKE_BUILD_TYPE)
	set(CMAKE_BUILD_TYPE "Release")
endif()

if (DEFINED PLAT)
	set(PLATFORMS ${PLAT})
elseif (DEFINED ENV{PLAT})
	set(PLATFORMS $ENV{PLAT})
else()
	set(PLATFORMS "dsk")
endif()

# add cmake to module path
set(C6416_SDK_PATH ${CMAKE_CURRENT_LIST_DIR})

list(APPEND CMAKE_MODULE_PATH ${C6416_SDK_PATH}/cmake)

if (NOT DEFINED CMAKE_TOOLCHAIN_FILE)
	set(CMAKE_TOOLCHAIN_FILE ${C6416_SDK_PATH}/cmake/c6400-toolchain.cmake)
endif()

project(c6416_sdk C ASM)

set(CMAKE_EXECUTABLE_SUFFIX .elf)
set(CMAKE_STATIC_LIBRARY_SUFFIX .lib)
set(CMAKE_STATIC_LIBRARY_PREFIX "")

set(CMAKE_C_STANDARD 11)

set(tgt_name "c6416_sdk")

add_library(${tgt_name} STATIC) 

target_include_directories(${tgt_name} PUBLIC
	${C6416_SDK_PATH}/include
	)

add_subdirectory(${C6416_SDK_PATH}/csl)
add_subdirectory(${C6416_SDK_PATH}/dsplib)
add_subdirectory(${C6416_SDK_PATH}/imglib)
add_subdirectory(${C6416_SDK_PATH}/src)

foreach (_plt IN LISTS PLATFORMS)
	if (x${_plt} STREQUAL x"")
		message(FATAL_ERROR "platform: please specify PLAT.") 
	endif()

	message(STATUS "platform: ${_plt}")

	get_filename_component(plt_dir ${C6416_SDK_PATH}/platforms/${_plt} REALPATH)

	if (NOT EXISTS ${plt_dir})
		message(FATAL_ERROR "platform: ${_plt} isn't exist.") 
	endif()

	add_subdirectory(${plt_dir})
endforeach()

add_custom_command(TARGET ${tgt_name} POST_BUILD
	COMMAND ${CMAKE_COMMAND} -E make_directory ${C6416_SDK_PATH}/lib
	COMMAND ${CMAKE_COMMAND} -E copy_if_different ${tgt_name}.lib ${C6416_SDK_PATH}/lib
	COMMENT "Copy ${tgt_name}.lib to ${C6416_SDK_PATH}/lib")