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# - Find wish installation
# This module finds if TCL is installed and determines where the
# include files and libraries are. It also determines what the name of
# the library is. This code sets the following variables:
#
#  TK_WISH = the path to the wish executable
#
# if UNIX is defined, then it will look for the cygwin version first
IF(UNIX)
  FIND_PROGRAM(TK_WISH cygwish80 )
ENDIF(UNIX)

GET_FILENAME_COMPONENT(TCL_TCLSH_PATH "${TCL_TCLSH}" PATH)
GET_FILENAME_COMPONENT(TCL_TCLSH_PATH_PARENT "${TCL_TCLSH_PATH}" PATH)
STRING(REGEX REPLACE 
  "^.*tclsh([0-9]\\.*[0-9]).*$" "\\1" TCL_TCLSH_VERSION "${TCL_TCLSH}")

GET_FILENAME_COMPONENT(TCL_INCLUDE_PATH_PARENT "${TCL_INCLUDE_PATH}" PATH)
GET_FILENAME_COMPONENT(TK_INCLUDE_PATH_PARENT "${TK_INCLUDE_PATH}" PATH)

GET_FILENAME_COMPONENT(TCL_LIBRARY_PATH "${TCL_LIBRARY}" PATH)
GET_FILENAME_COMPONENT(TCL_LIBRARY_PATH_PARENT "${TCL_LIBRARY_PATH}" PATH)
STRING(REGEX REPLACE 
  "^.*tcl([0-9]\\.*[0-9]).*$" "\\1" TCL_LIBRARY_VERSION "${TCL_LIBRARY}")

GET_FILENAME_COMPONENT(TK_LIBRARY_PATH "${TK_LIBRARY}" PATH)
GET_FILENAME_COMPONENT(TK_LIBRARY_PATH_PARENT "${TK_LIBRARY_PATH}" PATH)
STRING(REGEX REPLACE 
  "^.*tk([0-9]\\.*[0-9]).*$" "\\1" TK_LIBRARY_VERSION "${TK_LIBRARY}")

SET(TCLTK_POSSIBLE_BIN_PATHS
  "${TCL_INCLUDE_PATH_PARENT}/bin"
  "${TK_INCLUDE_PATH_PARENT}/bin"
  "${TCL_LIBRARY_PATH_PARENT}/bin"
  "${TK_LIBRARY_PATH_PARENT}/bin"
  "${TCL_TCLSH_PATH_PARENT}/bin"
  )

IF(WIN32)
  GET_FILENAME_COMPONENT(
    ActiveTcl_CurrentVersion 
    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\ActiveState\\ActiveTcl;CurrentVersion]" 
    NAME)
  SET(TCLTK_POSSIBLE_BIN_PATHS ${TCLTK_POSSIBLE_BIN_PATHS}
    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\ActiveState\\ActiveTcl\\${ActiveTcl_CurrentVersion}]/bin"
    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Scriptics\\Tcl\\8.6;Root]/bin"
    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Scriptics\\Tcl\\8.5;Root]/bin"
    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Scriptics\\Tcl\\8.4;Root]/bin"
    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Scriptics\\Tcl\\8.3;Root]/bin"
    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Scriptics\\Tcl\\8.2;Root]/bin"
    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Scriptics\\Tcl\\8.0;Root]/bin"
    )
ENDIF(WIN32)

SET(TK_WISH_NAMES
  wish 
  wish${TCL_LIBRARY_VERSION} wish${TK_LIBRARY_VERSION} wish${TCL_TCLSH_VERSION}
  wish86 wish8.6
  wish85 wish8.5 
  wish84 wish8.4 
  wish83 wish8.3 
  wish82 wish8.2 
  wish80 wish8.0
  )

FIND_PROGRAM(TK_WISH
  NAMES ${TK_WISH_NAMES}
  PATHS ${TCLTK_POSSIBLE_BIN_PATHS} NO_DEFAULT_PATH
  )
FIND_PROGRAM(TK_WISH
  NAMES ${TK_WISH_NAMES}
  PATHS ${TCLTK_POSSIBLE_BIN_PATHS}
  )

MARK_AS_ADVANCED(TK_WISH)