CMakeUserFindLibSVM

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File:FindLibSVM.cmake

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1. - Find LibSVM

   # LibSVM is a Library for Support Vector Machines
   # available at http://www.csie.ntu.edu.tw/~cjlin/libsvm/
   #
   # The module defines the following variables:
   #  LIBSVM_FOUND - the system has LibSVM
   #  LIBSVM_INCLUDE_DIR - where to find svm.h
   #  LIBSVM_INCLUDE_DIRS - libsvm includes
   #  LIBSVM_LIBRARY - where to find the LibSVM library
   #  LIBSVM_LIBRARIES - aditional libraries
   #  LIBSVM_MAJOR_VERSION - major version
   #  LIBSVM_MINOR_VERSION - minor version
   #  LIBSVM_PATCH_VERSION - patch version
   #  LIBSVM_VERSION_STRING - version (ex. 2.9.0)
   #  LIBSVM_ROOT_DIR - root dir (ex. /usr/local)

   #=============================================================================
   # Copyright (C) 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.
   #=============================================================================

   # set LIBSVM_INCLUDE_DIR
   find_path ( LIBSVM_INCLUDE_DIR
     NAMES
       svm.h
     PATHS
       ${LIBSVM_ROOT_DIR}/include
     PATH_SUFFIXES
       libsvm
       libsvm-2.0/libsvm
     DOC
       "LibSVM include directory"
   )

   # set LIBSVM_INCLUDE_DIRS
   if ( LIBSVM_INCLUDE_DIR )
     set ( LIBSVM_INCLUDE_DIRS ${LIBSVM_INCLUDE_DIR} )
   endif ()

   # version
   set ( _VERSION_FILE ${LIBSVM_INCLUDE_DIR}/svm.h )
   if ( EXISTS ${_VERSION_FILE} )
     # LIBSVM_VERSION_STRING macro defined in svm.h since version 2.8.9
     file ( STRINGS ${_VERSION_FILE} _VERSION_STRING REGEX ".*define[ ]+LIBSVM_VERSION[ ]+[0-9]+.*" )
     if ( _VERSION_STRING )
       string ( REGEX REPLACE ".*LIBSVM_VERSION[ ]+([0-9]+)" "\\1" _VERSION_NUMBER "${_VERSION_STRING}" )
       math ( EXPR LIBSVM_MAJOR_VERSION "${_VERSION_NUMBER} / 100" )
       math ( EXPR LIBSVM_MINOR_VERSION "(${_VERSION_NUMBER} % 100 ) / 10" )
       math ( EXPR LIBSVM_PATCH_VERSION "${_VERSION_NUMBER} % 10" )
       set ( LIBSVM_VERSION_STRING "${LIBSVM_MAJOR_VERSION}.${LIBSVM_MINOR_VERSION}.${LIBSVM_PATCH_VERSION}" )
     endif ()
   endif ()

   # check version
   set ( _LIBSVM_VERSION_MATCH TRUE )
   if ( LibSVM_FIND_VERSION AND LIBSVM_VERSION_STRING )
     if ( LibSVM_FIND_VERSION_EXACT )
       if ( NOT LibSVM_FIND_VERSION VERSION_EQUAL LIBSVM_VERSION_STRING )
         set ( _LIBSVM_VERSION_MATCH FALSE )
       endif ()
     else ()
       if ( LIBSVM_VERSION_STRING  VERSION_LESS LibSVM_FIND_VERSION )
         set ( _LIBSVM_VERSION_MATCH FALSE )
       endif ()
     endif ()
   endif ()

   # set LIBSVM_LIBRARY
   find_library ( LIBSVM_LIBRARY
     NAMES
       svm
     PATHS
       ${LIBSVM_ROOT_DIR}/lib
     DOC
       "LibSVM library location"
   )

   # set LIBSVM_LIBRARIES
   set ( LIBSVM_LIBRARIES ${LIBSVM_LIBRARY} )

   # link with math library on unix
   if ( UNIX )
     list ( APPEND LIBSVM_LIBRARIES "-lm" )
   endif ()

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

   # handle REQUIRED and QUIET options
   include ( FindPackageHandleStandardArgs )
   find_package_handle_standard_args ( LibSVM DEFAULT_MSG LIBSVM_LIBRARY
     _LIBSVM_VERSION_MATCH
     LIBSVM_INCLUDE_DIR
     LIBSVM_INCLUDE_DIRS
     LIBSVM_LIBRARIES
     LIBSVM_ROOT_DIR
   )

   mark_as_advanced (
     LIBSVM_LIBRARY
     LIBSVM_LIBRARIES
     LIBSVM_INCLUDE_DIR
     LIBSVM_INCLUDE_DIRS
     LIBSVM_ROOT_DIR
     LIBSVM_VERSION_STRING
     LIBSVM_MAJOR_VERSION
     LIBSVM_MINOR_VERSION
     LIBSVM_PATCH_VERSION
   )

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