CMakeUserFindQwt

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File:FindQwt.cmake

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   # Qt Widgets for Technical Applications
   # available at http://www.http://qwt.sourceforge.net/
   #
   # The module defines the following variables:
   #  QWT_FOUND - the system has Qwt
   #  QWT_INCLUDE_DIR - where to find qwt_plot.h
   #  QWT_INCLUDE_DIRS - qwt includes
   #  QWT_LIBRARY - where to find the Qwt library
   #  QWT_LIBRARIES - aditional libraries
   #  QWT_MAJOR_VERSION - major version
   #  QWT_MINOR_VERSION - minor version
   #  QWT_PATCH_VERSION - patch version
   #  QWT_VERSION_STRING - version (ex. 5.2.1)
   #  QWT_ROOT_DIR - root dir (ex. /usr/local)

   #=============================================================================
   # Copyright 2010-2013, Julien Schueller
   # All rights reserved.
   #
   # Redistribution and use in source and binary forms, with or without
   # modification, are permitted provided that the following conditions are met:
   #
   # 1. Redistributions of source code must retain the above copyright notice, this
   #    list of conditions and the following disclaimer.
   # 2. Redistributions in binary form must reproduce the above copyright notice,
   #    this list of conditions and the following disclaimer in the documentation
   #    and/or other materials provided with the distribution.
   #
   # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

   # The views and conclusions contained in the software and documentation are those
   # of the authors and should not be interpreted as representing official policies,
   # either expressed or implied, of the FreeBSD Project.
   #=============================================================================

   find_path ( QWT_INCLUDE_DIR
     NAMES qwt_plot.h
     HINTS ${QT_INCLUDE_DIR}
     PATH_SUFFIXES qwt qwt-qt3 qwt-qt4 qwt-qt5
   )

   set ( QWT_INCLUDE_DIRS ${QWT_INCLUDE_DIR} )

   # version
   set ( _VERSION_FILE ${QWT_INCLUDE_DIR}/qwt_global.h )
   if ( EXISTS ${_VERSION_FILE} )
     file ( STRINGS ${_VERSION_FILE} _VERSION_LINE REGEX "define[ ]+QWT_VERSION_STR" )
     if ( _VERSION_LINE )
       string ( REGEX REPLACE ".*define[ ]+QWT_VERSION_STR[ ]+\"(.*)\".*" "\\1" QWT_VERSION_STRING "${_VERSION_LINE}" )
       string ( REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+)" "\\1" QWT_MAJOR_VERSION "${QWT_VERSION_STRING}" )
       string ( REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+)" "\\2" QWT_MINOR_VERSION "${QWT_VERSION_STRING}" )
       string ( REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+)" "\\3" QWT_PATCH_VERSION "${QWT_VERSION_STRING}" )
     endif ()
   endif ()

   # check version
   set ( _QWT_VERSION_MATCH TRUE )
   if ( Qwt_FIND_VERSION AND QWT_VERSION_STRING )
     if ( Qwt_FIND_VERSION_EXACT )
       if ( NOT Qwt_FIND_VERSION VERSION_EQUAL QWT_VERSION_STRING )
         set ( _QWT_VERSION_MATCH FALSE )
       endif ()
     else ()
       if ( QWT_VERSION_STRING VERSION_LESS Qwt_FIND_VERSION )
         set ( _QWT_VERSION_MATCH FALSE )
       endif ()
     endif ()
   endif ()

   find_library ( QWT_LIBRARY
     NAMES qwt qwt-qt3 qwt-qt4 qwt-qt5
   )

   set ( QWT_LIBRARIES ${QWT_LIBRARY} )

   # try to guess root dir from include dir
   if ( QWT_INCLUDE_DIR )
     string ( REGEX REPLACE "(.*)/include.*" "\\1" QWT_ROOT_DIR ${QWT_INCLUDE_DIR} )
   # try to guess root dir from library dir
   elseif ( QWT_LIBRARY )
     string ( REGEX REPLACE "(.*)/lib[/|32|64].*" "\\1" QWT_ROOT_DIR ${QWT_LIBRARY} )
   endif ()

   # handle the QUIETLY and REQUIRED arguments
   include ( FindPackageHandleStandardArgs )
   find_package_handle_standard_args( Qwt DEFAULT_MSG QWT_LIBRARY QWT_INCLUDE_DIR _QWT_VERSION_MATCH )

   mark_as_advanced (
     QWT_LIBRARY
     QWT_LIBRARIES
     QWT_INCLUDE_DIR
     QWT_INCLUDE_DIRS
     QWT_MAJOR_VERSION
     QWT_MINOR_VERSION
     QWT_PATCH_VERSION
     QWT_VERSION_STRING
     QWT_ROOT_DIR
   )

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