configure_file(${hedgewars_SOURCE_DIR}/hedgewars/proto.inc.in ${CMAKE_CURRENT_BINARY_DIR}/proto.inc)

find_package(SDL)
find_package(SDL_image)
find_package(SDL_net)
find_package(SDL_ttf)
find_package(SDL_mixer)


#SOURCE AND PROGRAMS SECTION 
set(fpc_tryexe fpc)
set(hwengine_project ${hedgewars_SOURCE_DIR}/hedgewars/hwengine.pas)

set(engine_sources
	${hwengine_project}
	SDLh.pas
	uAI.pas
	uAIActions.pas
	uAIAmmoTests.pas
	uAIMisc.pas
	uAmmos.pas
	uChat.pas
	uCollisions.pas
	uConsole.pas
	uConsts.pas
	uFloat.pas
	uGame.pas
	uGears.pas
	uIO.pas
	uKeys.pas
	uLand.pas
	uLandGraphics.pas
	uLandObjects.pas
	uLandTemplates.pas
	uLandTexture.pas
	uLocale.pas
	uMisc.pas
	uRandom.pas
	uSHA.pas
	uSound.pas
	uStats.pas
	uStore.pas
	uTeams.pas
	uTriggers.pas
	uVisualGears.pas
	uWorld.pas
	CCHandlers.inc
	GSHandlers.inc
	HHHandlers.inc
	SinTable.inc
	options.inc
	${CMAKE_CURRENT_BINARY_DIR}/proto.inc
	tunsetborder.inc
	)

find_program(fpc_executable ${fpc_tryexe})

if (fpc_executable)
	 exec_program(${fpc_executable} ARGS "-h" OUTPUT_VARIABLE fpc_output)
endif (fpc_executable)

set (noexecstack_flags "-k-z" "-knoexecstack")
file(WRITE ${EXECUTABLE_OUTPUT_PATH}/checkstack.pas "begin end.")

exec_program(${fpc_executable} ${EXECUTABLE_OUTPUT_PATH}
		ARGS ${noexecstack_flags} checkstack.pas
		OUTPUT_VARIABLE noout
		RETURN_VALUE testnoexecstack)

if (${testnoexecstack})
set (noexecstack_flags "")
endif (${testnoexecstack})


#PASCAL DETECTION SECTION
string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" fpc_version "${fpc_output}")

if (fpc_version)
	string(REGEX REPLACE "([0-9]+)\\.[0-9]+\\.[0-9]+" "\\1" fpc_vers_major "${fpc_version}")
	string(REGEX REPLACE "[0-9]+\\.([0-9]+)\\.[0-9]+" "\\1" fpc_vers_minor "${fpc_version}")
	string(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" fpc_vers_patch "${fpc_version}")
	math(EXPR fpc_ver "${fpc_vers_major}*10000 + ${fpc_vers_minor}*100 + ${fpc_vers_patch}")
	if (fpc_ver LESS "020200")
		message(FATAL_ERROR "Minimum required version of FreePascal is 2.2.0")
	else()
		set(pascal_compiler ${fpc_executable})
	endif ()
endif (fpc_version)

if (NOT pascal_compiler)
	message(FATAL_ERROR "No Pascal compiler found!")
endif (NOT pascal_compiler)


set(pascal_compiler_flags ${noexecstack_flags} ${pascal_compiler_flags_cmn} ${hwengine_project})

if(LOWRES)
	set(pascal_compiler_flags "-dLOWRES" ${pascal_compiler_flags} ${hwengine_project})
endif(LOWRES)


#DEPENDECIES AND EXECUTABLES SECTION
IF(APPLE)
#let's build sdlmain, which is absent from the framework
	find_package(SDL REQUIRED)

	set(LIBRARY_OUTPUT_PATH ${EXECUTABLE_OUTPUT_PATH})
	include_directories(${SDL_INCLUDE_DIR})
	link_libraries(${SDL_LIBRARY})
	
	#apparently this variable is not exported here
	set(CMAKE_OSX_ARCHITECTURES "i386;ppc7400")		

	add_library (SDLmain STATIC SDLMain.m)
	set(engine_sources SDLmain ${engine_sources})
ENDIF(APPLE)

IF(NOT APPLE)
#here is the standard command for any system
	add_custom_command(OUTPUT "${EXECUTABLE_OUTPUT_PATH}/hwengine${CMAKE_EXECUTABLE_SUFFIX}"
		COMMAND "${pascal_compiler}"
		ARGS ${pascal_compiler_flags}
		MAIN_DEPENDENCY ${hwengine_project}
		DEPENDS ${engine_sources}
		)
ELSE()
#these are the dependencies for building a universal binary on Mac OS X
	find_program(pascal_x86 NAMES ppc386)
	find_program(pascal_ppc NAMES ppcppc)

	add_custom_command(OUTPUT "${EXECUTABLE_OUTPUT_PATH}/hwengine.386"
		COMMAND "${pascal_x86}" 
		ARGS ${pascal_compiler_flags} -ohwengine.386
		MAIN_DEPENDENCY ${hwengine_project}
		DEPENDS ${engine_sources}
		)
	add_custom_target(hwengine.386 ALL DEPENDS "${EXECUTABLE_OUTPUT_PATH}/hwengine.386")

	add_custom_command(OUTPUT "${EXECUTABLE_OUTPUT_PATH}/hwengine.ppc"
		COMMAND "${pascal_ppc}"
		ARGS ${pascal_compiler_flags} -ohwengine.ppc
		MAIN_DEPENDENCY ${hwengine_project}
		DEPENDS ${engine_sources}
		)
	add_custom_target(hwengine.ppc ALL DEPENDS "${EXECUTABLE_OUTPUT_PATH}/hwengine.ppc")

	IF(build_type MATCHES "universal64")
		find_program(pascal_x64 NAMES ppcx64)
		
		add_custom_command(OUTPUT "${EXECUTABLE_OUTPUT_PATH}/hwengine.x64"
			COMMAND "${pascal_x64}" 
			ARGS ${pascal_compiler_flags} -ohwengine.x64
			MAIN_DEPENDENCY ${hwengine_project}
			DEPENDS ${engine_sources}
			)
		add_custom_target(hwengine.x64 ALL DEPENDS "${EXECUTABLE_OUTPUT_PATH}/hwengine.x64")

		add_custom_command(OUTPUT "${EXECUTABLE_OUTPUT_PATH}/hwengine"
			COMMAND "lipo"
			ARGS "${EXECUTABLE_OUTPUT_PATH}/hwengine.386" "${EXECUTABLE_OUTPUT_PATH}/hwengine.ppc" "${EXECUTABLE_OUTPUT_PATH}/hwengine.x64" -create -output ${EXECUTABLE_OUTPUT_PATH}/hwengine
			DEPENDS "${EXECUTABLE_OUTPUT_PATH}/hwengine.386" "${EXECUTABLE_OUTPUT_PATH}/hwengine.ppc" "${EXECUTABLE_OUTPUT_PATH}/hwengine.x64"
			)
	else()
		add_custom_command(OUTPUT "${EXECUTABLE_OUTPUT_PATH}/hwengine"
			COMMAND "lipo"
			ARGS "${EXECUTABLE_OUTPUT_PATH}/hwengine.386" "${EXECUTABLE_OUTPUT_PATH}/hwengine.ppc" -create -output ${EXECUTABLE_OUTPUT_PATH}/hwengine
			DEPENDS "${EXECUTABLE_OUTPUT_PATH}/hwengine.386" "${EXECUTABLE_OUTPUT_PATH}/hwengine.ppc"
			)
	endif()
ENDIF()

add_custom_target(hwengine ALL DEPENDS "${EXECUTABLE_OUTPUT_PATH}/hwengine${CMAKE_EXECUTABLE_SUFFIX}")

install(PROGRAMS "${EXECUTABLE_OUTPUT_PATH}/hwengine${CMAKE_EXECUTABLE_SUFFIX}" DESTINATION ${target_dir})