CMAKE_MINIMUM_REQUIRED( VERSION 2.6.2 )
PROJECT( MegaGlest )

# SET(CMAKE_VERBOSE_MAKEFILE ON)

#
# *NOTE: For now we assume some variation of GCC Compiler (or MingW for Windows binaries)
# VC++ users should not use CMake yet but rather the build-mg.bat file in mk/windoze
#

# build type defaults to release
if(NOT DEFINED CMAKE_BUILD_TYPE)
	set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose build type: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
endif(NOT DEFINED CMAKE_BUILD_TYPE)

# add additional CMake modules
list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/mk/cmake/Modules)

MESSAGE(STATUS "Build type for this compile will be: ${CMAKE_BUILD_TYPE}")

FUNCTION(Subversion_IS_WC FOLDER RESULT_VAR)
    IF(Subversion_FOUND)
    
        # SVN info does not like .. as paths, so be sure that we use a full path
        GET_FILENAME_COMPONENT(ABS_FOLDER ${FOLDER} ABSOLUTE)
        EXECUTE_PROCESS(COMMAND ${Subversion_SVN_EXECUTABLE} info ${ABS_FOLDER}
                        RESULT_VARIABLE INFO_RESULT
                        OUTPUT_VARIABLE IGNORED
                        ERROR_VARIABLE IGNORED)
        IF(INFO_RESULT EQUAL 0)
            SET(${RESULT_VAR} TRUE PARENT_SCOPE)
        ELSE()
            SET(${RESULT_VAR} FALSE PARENT_SCOPE)
        ENDIF()
    
    ELSE()
        MESSAGE(STATUS "Cannot check whether folder ${FOLDER} is a svn working copy because svn was not found. Returning FALSE.")
        SET(${RESULT_VAR} FALSE PARENT_SCOPE)
    ENDIF()

ENDFUNCTION()

OPTION(BUILD_MEGAGLEST_MODEL_IMPORT_EXPORT_TOOLS "Build model import/export tools" ON)
OPTION(BUILD_MEGAGLEST_MODEL_VIEWER "Build model viewer" ON)
OPTION(BUILD_MEGAGLEST_MAP_EDITOR "Build map editor" ON)
OPTION(BUILD_MEGAGLEST_CONFIGURATOR "Build configurator" ON)
OPTION(BUILD_MEGAGLEST "Build MegaGlest" ON)

FIND_PROGRAM(HELP2MAN "help2man")

set(XVFB_EXEC "")
find_program(XVFB_RUN NAMES "xvfb-run")
if (NOT ${XVFB_RUN} MATCHES "XVFB_RUN-NOTFOUND")
	set(XVFB_EXEC ${XVFB_RUN})
	message(STATUS "Using xvfb-run to run man2help.")
endif()

include(${CMAKE_SOURCE_DIR}/mk/cmake/Modules/SpecialMacros.cmake) 

## Compiler flags
IF(CMAKE_COMPILER_IS_GNUCXX OR MINGW)
	IF(CMAKE_COMPILER_IS_GNUCXX)
		MESSAGE(STATUS "Detected GNUC Compiler...")
	ELSEIF(MINGW)
		MESSAGE(STATUS "Detected MINGW Compiler...")
	ENDIF()

	if (NOT CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE)
	set(CMAKE_BUILD_TYPE RelWithDebInfo)
	endif (NOT CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE)

	# Default compiler flags
	#SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s")  ## Strip binary

	# For gcc warning options see: http://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
	IF(NOT MINGW)
		# For tons of verbose warnings add: -Wall
#		ADD_DEFINITIONS("-Wreturn-type -fno-strict-aliasing -frounding-math  -fsignaling-nans -mfpmath=sse -msse -rdynamic")
		ADD_DEFINITIONS("-Wreturn-type -fno-strict-aliasing -frounding-math  -fsignaling-nans -rdynamic")
	ELSE()
#		ADD_DEFINITIONS("-Wreturn-type -fno-strict-aliasing -frounding-math  -fsignaling-nans -mfpmath=sse -msse -DUNICODE")
		ADD_DEFINITIONS("-Wreturn-type -fno-strict-aliasing -frounding-math  -fsignaling-nans -DUNICODE")
	ENDIF()
	#SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")	
        
        IF(NOT MAX_SSE_LEVEL_DESIRED)
                SET(MAX_SSE_LEVEL_DESIRED "1" CACHE STRING "Set the max SSE level to use if supported (0-3)" FORCE)
        ENDIF()
        
        MESSAGE(STATUS "*NOTE: Checking for max SSE LEVEL [${MAX_SSE_LEVEL_DESIRED}]")
        special_check_for_sse( ${MAX_SSE_LEVEL_DESIRED} )

        OPTION(WANT_STREFLOP "use the library streflop" ON)
	IF(WANT_STREFLOP)
		ADD_DEFINITIONS("-DUSE_STREFLOP -DSTREFLOP_RANDOM_GEN_SIZE=32 -DLIBM_COMPILING_FLT32")

                IF(HAS_SSE_EXTENSIONS)
                        ADD_DEFINITIONS("-DSTREFLOP_SSE")
                        MESSAGE(STATUS "*NOTE: using SSE for STREFLOP.")
                ELSE()
                        special_check_for_x87()

                        IF(HAS_X87_SUPPORT)
                                ADD_DEFINITIONS("-DSTREFLOP_X87")
                                MESSAGE(STATUS "*NOTE: using X87 for STREFLOP.")
                        ELSE()
                                ADD_DEFINITIONS("-DSTREFLOP_SOFT")
                                MESSAGE(STATUS "*NOTE: using SOFT emulation for STREFLOP.")
                        ENDIF()
                ENDIF()
	ELSE()
		MESSAGE(STATUS "*WARNING: Disabled use of STREFLOP! Out of synchs may occur")
	ENDIF()

	# Debug compiler flags
	SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g3")

	# Release compiler flags
	SET(CMAKE_CXX_FLAGS_RELEASE "-O3 ${CMAKE_CXX_FLAGS_RELEASE} -O3 ")
	SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -s")  ## Strip binary

	# Release with debug info compiler flags
	SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 ${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -g -O3 ") 

	# Release minimum size compiler flags
	SET(CMAKE_CXX_FLAGS_MINSIZEREL "-O3 ${CMAKE_CXX_FLAGS_MINSIZEREL} -O3 ")
	SET(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL} -s")  ## Strip binary 

	SET(HAS_SVN "FALSE") 

	OPTION(WANT_SVN_STAMP "use svn stamp" ON)
	IF(WANT_SVN_STAMP)
		# The stuff below gets SVN Global Revision # but ONLY when calling cmake!
		# the FindSubversion.cmake module is part of the standard distribution
		include(FindSubversion)
	
		Subversion_IS_WC(${PROJECT_SOURCE_DIR} HAS_SVN)
		IF(${HAS_SVN} STREQUAL "TRUE")
                        MESSAGE(STATUS "Found SVN and using SVN version stamping...")
			# extract working copy information for SOURCE_DIR into MY_XXX variables
			Subversion_WC_INFO(${PROJECT_SOURCE_DIR} MG)
			#add_definitions(-DSVNVERSION="${MG_WC_REVISION}")
		ENDIF()
	ENDIF()

	SET(SVN_VERSION_CMD "-DSVNVERSION='\\\"${MG_WC_REVISION}\\\"'")

	IF(UNIX AND NOT APPLE AND ${HAS_SVN} STREQUAL "TRUE")
		# We do some funky character escaping to get the right stuff written out to 
		# the final Makefile so we get the SVN Global Revsion #
		SET(SVN_VERSION_CMD "-DSVNVERSION='\\\"`svnversion -n ${PROJECT_SOURCE_DIR}`\\\"'")
	ENDIF()

	IF(CMAKE_INSTALL_PREFIX STREQUAL "")
		MESSAGE(STATUS "*NOTE: NOT USING a Custom Data Install Path...")
	ELSE()
		IF(NOT MEGAGLEST_BIN_INSTALL_PATH)
			SET(MEGAGLEST_BIN_INSTALL_PATH "bin/" CACHE STRING "The installation path for binaries (this is appended to the CMAKE_INSTALL_PREFIX)")
		ENDIF()
		IF(NOT MEGAGLEST_DATA_INSTALL_PATH)
			SET(MEGAGLEST_DATA_INSTALL_PATH "share/megaglest/" CACHE STRING "The installation path for data files (this is appended to the CMAKE_INSTALL_PREFIX)")
		ENDIF()
		IF(NOT MEGAGLEST_DESKTOP_INSTALL_PATH)
                	SET(MEGAGLEST_DESKTOP_INSTALL_PATH "share/applications/" CACHE STRING "The installation path for desktop files (this is appended to the CMAKE_INSTALL_PREFIX)")
		ENDIF()
		IF(NOT MEGAGLEST_ICON_INSTALL_PATH)
                	SET(MEGAGLEST_ICON_INSTALL_PATH "share/pixmaps/" CACHE STRING "The installation path for icon files (this is appended to the CMAKE_INSTALL_PREFIX)")
		ENDIF()
		IF(NOT MEGAGLEST_MANPAGE_INSTALL_PATH)
                	SET(MEGAGLEST_MANPAGE_INSTALL_PATH "share/man/man6/" CACHE STRING "The installation path for manpage files (this is appended to the CMAKE_INSTALL_PREFIX)")
		ENDIF()

		IF(NOT CUSTOM_DATA_INSTALL_PATH)
			SET(CUSTOM_DATA_INSTALL_PATH "'\\\"${CMAKE_INSTALL_PREFIX}/${MEGAGLEST_DATA_INSTALL_PATH}\\\"'" CACHE STRING "The FULL installation path for data files (this is build automatically by combining CMAKE_INSTALL_PREFIX and MEGAGLEST_DATA_INSTALL_PATH)")
		ENDIF()
		SET(CUSTOM_DATA_INSTALL_PATH_VALUE "-DCUSTOM_DATA_INSTALL_PATH=${CUSTOM_DATA_INSTALL_PATH}")

		MESSAGE(STATUS "*NOTE: Custom Data Install Path is [${CUSTOM_DATA_INSTALL_PATH}]")
	ENDIF()

	SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${SVN_VERSION_CMD} ${CUSTOM_DATA_INSTALL_PATH_VALUE}")
	SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${SVN_VERSION_CMD} ${CUSTOM_DATA_INSTALL_PATH_VALUE}")
	SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} ${SVN_VERSION_CMD} ${CUSTOM_DATA_INSTALL_PATH_VALUE}")
	SET(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} ${SVN_VERSION_CMD} ${CUSTOM_DATA_INSTALL_PATH_VALUE}")

	# We do some funky character escaping to get the right stuff written out to 
	# the final Makefile so we get the SVN Global Revsion #
	string(REPLACE "'" "\"" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
	string(REPLACE "'" "\"" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
	string(REPLACE "'" "\"" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
	string(REPLACE "'" "\"" CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL}")

	IF( CMAKE_BUILD_TYPE STREQUAL Debug )
		message("CMAKE_CXX_FLAGS_DEBUG: ${CMAKE_CXX_FLAGS_DEBUG}")
	ELSEIF( CMAKE_BUILD_TYPE STREQUAL Release )
		message("CMAKE_CXX_FLAGS_RELEASE: ${CMAKE_CXX_FLAGS_RELEASE}")
	ELSEIF( CMAKE_BUILD_TYPE STREQUAL RELWITHDEBINFO )
		message("CMAKE_CXX_FLAGS_RELWITHDEBINFO: ${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
	ELSEIF( CMAKE_BUILD_TYPE STREQUAL MINSIZEREL )
		message("CMAKE_CXX_FLAGS_MINSIZEREL: ${CMAKE_CXX_FLAGS_MINSIZEREL}")

	ENDIF()

	# Win32 specific Compiler Flags
	IF(WIN32)
		ADD_DEFINITIONS("-D_WINDOWS -D_WIN32 -D_STDCALL_SUPPORTED -D_M_IX86 -DXML_LIBRARY -D_LIB -DCURL_STATICLIB")
	ELSE()
		ADD_DEFINITIONS("-DCURL_STATICLIB")
	ENDIF()
ENDIF()

IF(WIN32)
	SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH}
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/lib
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/xerces-c-src_2_8_0/lib
           ${PROJECT_SOURCE_DIR}/source/win32_deps/wxWidgets-2.8.10/lib)

	SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH}
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/include
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/openal-soft-1.12.854/include
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/openal-soft-1.12.854
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/xerces-c-src_2_8_0/include
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/libogg-1.2.1/include
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/lua-5.1/src
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/jpeg-8b
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/lpng141
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/zlib-1.2.5
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/curl-7.21.3/include
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/SDL-1.2.x/include
	   ${PROJECT_SOURCE_DIR}/source/win32_deps/wxWidgets-2.8.10/include)

	link_directories(${PROJECT_SOURCE_DIR}/source/win32_deps/lib)
	link_directories(${PROJECT_SOURCE_DIR}/source/win32_deps/xerces-c-src_2_8_0/lib)
	link_directories(${PROJECT_SOURCE_DIR}/source/win32_deps/wxWidgets-2.8.10/lib)
	include_directories("${PROJECT_SOURCE_DIR}/source/win32_deps/Microsoft\ DirectX\ SDK \(November 2007\)/Include")
	include_directories(${PROJECT_SOURCE_DIR}/source/win32_deps/openal-soft-1.12.854/include)
ENDIF()

# Check if sources exist
IF(EXISTS "${PROJECT_SOURCE_DIR}/source/")
	MESSAGE(STATUS "**Found game source code.")

	ADD_SUBDIRECTORY( ${PROJECT_SOURCE_DIR}/source/shared_lib )
	ADD_SUBDIRECTORY( ${PROJECT_SOURCE_DIR}/source/glest_game )
	#if(wxWidgets_FOUND)
	  ADD_SUBDIRECTORY( ${PROJECT_SOURCE_DIR}/source/glest_map_editor )
	  ADD_SUBDIRECTORY( ${PROJECT_SOURCE_DIR}/source/g3d_viewer )
	  ADD_SUBDIRECTORY( ${PROJECT_SOURCE_DIR}/source/configurator )
	#else()
	#  MESSAGE(STATUS "WARNING... the following game tools will NOT be built since we cannot find wxWidgets on this machine")
	#  MESSAGE(STATUS "map editor, g3d viewer, configurator")
	#endif()
	ADD_SUBDIRECTORY( ${PROJECT_SOURCE_DIR}/source/tools/glexemel )

	IF(APPLE)
		include(${PROJECT_SOURCE_DIR}/mk/macosx/CMakeLists.txt)
	ENDIF(APPLE)
ENDIF()

# Check if data exist
IF(EXISTS "${PROJECT_SOURCE_DIR}/data/glest_game/")
        MESSAGE(STATUS "**Found game data.")
	ADD_SUBDIRECTORY( ${PROJECT_SOURCE_DIR}/data/glest_game )
ENDIF()

get_directory_property( DirDefs DIRECTORY ${CMAKE_SOURCE_DIR} COMPILE_DEFINITIONS )
foreach( d ${DirDefs} )
    message( STATUS "=====> Found Define: " ${d} )
endforeach()
message( STATUS "=====> DirDefs: " ${DirDefs} )
#MESSAGE(STATUS "*** Compiler definitions are [${COMPILE_DEFINITIONS}]")

MARK_AS_ADVANCED(SDLMAIN_LIBRARY)
MARK_AS_ADVANCED(SDL_INCLUDE_DIR)
MARK_AS_ADVANCED(SDL_LIBRARY)



