# Locate SDL_net library
# This module defines
# SDLNET_LIBRARY, the name of the library to link against
# SDLNET_FOUND, if false, do not try to link against
# SDLNET_INCLUDE_DIR, where to find the headers
#
# $SDLDIR is an environment variable that would
# correspond to the ./configure --prefix=$SDLDIR
# used in building SDL.
#
# Created by Eric Wing. This was influenced by the FindSDL.cmake 
# module, but with modifications to recognize OS X frameworks and 
# additional Unix paths (FreeBSD, etc).

# On OSX, this will prefer the Framework version (if found) over others.
# People will have to manually change the cache values of 
# SDLNET_LIBRARY to override this selection.
FIND_PATH(SDLNET_INCLUDE_DIR SDL_net.h
	$ENV{SDLNETDIR}/include
	$ENV{SDLDIR}/include
	~/Library/Frameworks/SDL_net.framework/Headers
	/Library/Frameworks/SDL_net.framework/Headers
	/usr/local/include/SDL
	/usr/include/SDL
	/usr/local/include/SDL12
	/usr/local/include/SDL11 # FreeBSD ports
	/usr/include/SDL12
	/usr/include/SDL11
	/usr/local/include
	/usr/include
	/sw/include/SDL # Fink
	/sw/include
	/opt/local/include/SDL # DarwinPorts
	/opt/local/include
	/opt/csw/include/SDL # Blastwave
	/opt/csw/include 
	/opt/include/SDL
	/opt/include
)
# I'm not sure if I should do a special casing for Apple. It is 
# unlikely that other Unix systems will find the framework path.
# But if they do ([Next|Open|GNU]Step?), 
# do they want the -framework option also?
IF(${SDLNET_INCLUDE_DIR} MATCHES ".framework")
	# Extract the path the framework resides in so we can use it for the -F flag
	STRING(REGEX REPLACE "(.*)/.*\\.framework/.*" "\\1" SDLNET_FRAMEWORK_PATH_TEMP ${SDLNET_INCLUDE_DIR})
	IF("${SDLNET_FRAMEWORK_PATH_TEMP}" STREQUAL "/Library/Frameworks"
		OR "${SDLNET_FRAMEWORK_PATH_TEMP}" STREQUAL "/System/Library/Frameworks"
	)
		# String is in default search path, don't need to use -F
		SET(SDLNET_LIBRARY "-framework SDL_net" CACHE STRING "SDL_net framework for OSX")
	ELSE("${SDLNET_FRAMEWORK_PATH_TEMP}" STREQUAL "/Library/Frameworks"
		OR "${SDLNET_FRAMEWORK_PATH_TEMP}" STREQUAL "/System/Library/Frameworks"
	)
		# String is not /Library/Frameworks, need to use -F
		SET(SDLNET_LIBRARY "-F${SDLNET_FRAMEWORK_PATH_TEMP} -framework SDL_net" CACHE STRING "SDL_net framework for OSX")
	ENDIF("${SDLNET_FRAMEWORK_PATH_TEMP}" STREQUAL "/Library/Frameworks"
		OR "${SDLNET_FRAMEWORK_PATH_TEMP}" STREQUAL "/System/Library/Frameworks"
	)
	# Clear the temp variable so nobody can see it
	SET(SDLNET_FRAMEWORK_PATH_TEMP "" CACHE INTERNAL "")

ELSE(${SDLNET_INCLUDE_DIR} MATCHES ".framework")
	FIND_LIBRARY(SDLNET_LIBRARY 
		NAMES SDL_net
		PATHS
		$ENV{SDLNET}/lib
		$ENV{SDLDIR}/lib
		/usr/local/lib
		/usr/lib
		/sw/lib
		/opt/local/lib
		/opt/csw/lib
		/opt/lib
	)
ENDIF(${SDLNET_INCLUDE_DIR} MATCHES ".framework")

SET(SDLNET_FOUND "NO")
IF(SDLNET_LIBRARY)
	SET(SDLNET_FOUND "YES")
ENDIF(SDLNET_LIBRARY)