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)

#PASCAL FLAG SECTION

set(pascal_compiler_flags ${noexecstack_flags} "-B" "-FE../bin" "-Fl../bin/" "-Cs2000000" "-vwi" ${hwengine_project})

if(OPTIMIZATIONS)

	set(pascal_compiler_flags "-O2" "-Xs" "-Nu" ${pascal_compiler_flags})

	if(APPLE AND NOT universal_build)

		set(pascal_compiler_flags "-fPIC" "-CfSSE2" ${pascal_compiler_flags})	#instruction set for ppc is 7400

	endif()			

else(OPTIMIZATIONS)

	set(pascal_compiler_flags "-O-" "-gl" "-dDEBUGFILE" "-pg" "-va" ${pascal_compiler_flags})

endif(OPTIMIZATIONS)

if(LOWRES)

	set(pascal_compiler_flags "-dLOWRES" ${pascal_compiler_flags} ${hwengine_project})

endif(LOWRES)

#special handling of MSVC compiler (no static linking)

if(MSVC)

	set(pascal_compiler_flags "-dMSVC" ${pascal_compiler_flags})

endif(MSVC)

#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})

	add_library (SDLmain STATIC SDLMain.m)

	set(engine_sources SDLmain ${engine_sources})

ENDIF(APPLE)

IF(NOT APPLE OR NOT universal_build)

#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 two dependencies for building a universal binary on Mac OS X

add_custom_command(OUTPUT "${EXECUTABLE_OUTPUT_PATH}/hwengine.386"

		COMMAND "ppc386" 

		ARGS ${pascal_compiler_flags} -ohwengine.386 -CfSSE2

		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 "ppcppc"

		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")

#this is the command that bundles the two executables into one

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()

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})