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#
# try to find X11 on UNIX systems.
#
# The following values are defined
# CMAKE_X11_INCLUDE_PATH - where to find X11.h
# CMAKE_X_LIBS - link against these to use X11
# CMAKE_HAS_X - True if X11 is available
# CMAKE_X11_LIBDIR - Directory with X11 library
# CMAKE_Xext_LIBDIR - Directory with Xext library
IF (UNIX)
SET(CMAKE_X_PRE_LIBS "")
SET(CMAKE_X_REAL_LIBS "")
SET(CMAKE_X_EXTRA_LIBS "")
SET(CMAKE_HAS_X 0)
FIND_PATH(CMAKE_X11_INCLUDE_PATH X11/X.h
/usr/include
/usr/local/include
/usr/openwin/include
/usr/openwin/share/include
/usr/X11R6/include
/usr/include/X11
/opt/graphics/OpenGL/include
)
FIND_LIBRARY(CMAKE_X11_LIBDIR X11
/usr/lib
/usr/local/lib
/usr/openwin/lib
/usr/X11R6/lib
)
FIND_LIBRARY(CMAKE_Xext_LIBDIR Xext
/usr/lib
/usr/local/lib
/usr/openwin/lib
/usr/X11R6/lib
)
SET (CMAKE_X_LIBS "${CMAKE_X_PRE_LIBS} ${CMAKE_X_LIBS} ${CMAKE_X_EXTRA_LIBS}"
CACHE STRING
"Libraries and options used in X11 programs.")
SET (CMAKE_X_CFLAGS "${CMAKE_X_CFLAGS}" CACHE STRING
"X11 extra flags.")
IF(CMAKE_X11_INCLUDE_PATH)
IF(CMAKE_X11_LIBDIR)
SET( CMAKE_X_LIBS ${CMAKE_X_LIBS} ${CMAKE_X11_LIBDIR} )
ENDIF(CMAKE_X11_LIBDIR)
IF(CMAKE_Xext_LIBDIR)
SET( CMAKE_X_LIBS ${CMAKE_X_LIBS} ${CMAKE_Xext_LIBDIR} )
ENDIF(CMAKE_Xext_LIBDIR)
ENDIF(CMAKE_X11_INCLUDE_PATH)
# Deprecated variable fro backwards compatibility with CMake 1.4
IF(CMAKE_X11_INCLUDE_PATH)
IF(CMAKE_X_LIBS)
SET(CMAKE_HAS_X 1)
ENDIF(CMAKE_X_LIBS)
ENDIF(CMAKE_X11_INCLUDE_PATH)
SET (CMAKE_HAS_X ${CMAKE_HAS_X} CACHE INTERNAL "Is X11 around.")
ENDIF (UNIX)
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