update FindJPEG tu support debug configurations

Modules/FindJPEG.cmake

 # Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
 # file Copyright.txt or https://cmake.org/licensing for details.
-
+#
 #.rst:
 # FindJPEG
 # --------
 #
 # Find JPEG
 #
-# Find the native JPEG includes and library This module defines
+# Result Variables
+# ^^^^^^^^^^^^^^^^
+#
+# The following variables will be defined:
+#
+#   ``JPEG_FOUND``
+#     True if JPEG found on local system
+#
+#   ``JPEG_INCLUDE_DIR``
+#     Location of JPEG header files
+#
+#   ``JPEG_LIBRARY``
+#     List of JPEG libraries
 #
-# ::
+# For compatibility with existing scripts, also this variable is defined but should not be used:
 #
-#   JPEG_INCLUDE_DIR, where to find jpeglib.h, etc.
-#   JPEG_LIBRARIES, the libraries needed to use JPEG.
-#   JPEG_FOUND, If false, do not try to use JPEG.
+#   ``JPEG_LIBRARIES``
+#     List of JPEG libraries
 #
-# also defined, but not for general use are
+# Hints
+# ^^^^^
 #
-# ::
+#   ``JPEG_ROOT``
+#     Set this variable to a directory that contains a JPEG installation
 #
-#   JPEG_LIBRARY, where to find the JPEG library.
+#
+
+include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
+include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
 
-find_path(JPEG_INCLUDE_DIR jpeglib.h)
+# If the user has provided ``JPEG_ROOT``, use it!  Choose items found
+# at this location over system locations.
+if( EXISTS "$ENV{JPEG_ROOT}" )
+  file( TO_CMAKE_PATH "$ENV{JPEG_ROOT}" JPEG_ROOT )
+  set( JPEG_ROOT "${JPEG_ROOT}" CACHE PATH "Prefix for JPEG installation." )
+elseif(EXISTS "$ENV{JPEG_DIR}" )
+  file( TO_CMAKE_PATH "$ENV{JPEG_DIR}" JPEG_ROOT )
+  set( JPEG_ROOT "${JPEG_ROOT}" CACHE PATH "Prefix for JPEG installation." )
+endif()
 
-set(JPEG_NAMES ${JPEG_NAMES} jpeg libjpeg)
-find_library(JPEG_LIBRARY NAMES ${JPEG_NAMES} )
+list(APPEND JPEG_H_NAMES jpeglib.h jpeg.h)
+list(APPEND JPEG_NAMES jpeg libjpeg)
 
-include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(JPEG DEFAULT_MSG JPEG_LIBRARY JPEG_INCLUDE_DIR)
+foreach (jpeg_name ${JPEG_NAMES})
+  list(APPEND JPEG_NAMES_DEBUG ${jpeg_name}d)
+endforeach()
 
-if(JPEG_FOUND)
-  set(JPEG_LIBRARIES ${JPEG_LIBRARY})
+if(NOT JPEG_INCLUDE_DIR)
+  find_path(JPEG_INCLUDE_DIR NAMES ${JPEG_H_NAMES} PATHS ${JPEG_ROOT}/include ${JPEG_INCLUDE_DIRS} PATH_SUFFIXES jpeg Release Debug)
 endif()
 
-# Deprecated declarations.
-set (NATIVE_JPEG_INCLUDE_PATH ${JPEG_INCLUDE_DIR} )
-if(JPEG_LIBRARY)
-  get_filename_component (NATIVE_JPEG_LIB_PATH ${JPEG_LIBRARY} PATH)
+if(NOT JPEG_LIBRARY)
+  find_library(JPEG_LIBRARY_RELEASE NAMES ${JPEG_NAMES} PATHS ${JPEG_ROOT} PATH_SUFFIXES jpeg )
+  find_library(JPEG_LIBRARY_DEBUG NAMES ${JPEG_NAMES_DEBUG} PATHS ${JPEG_ROOT} PATH_SUFFIXES debug jpeg )
+  select_library_configurations(JPEG)
 endif()
 
-mark_as_advanced(JPEG_LIBRARY JPEG_INCLUDE_DIR )
+set(JPEG_LIBRARIES ${JPEG_LIBRARY})
+
+find_package_handle_standard_args(JPEG REQUIRED_VARS JPEG_LIBRARY JPEG_INCLUDE_DIR)