CMake: log when libjpeg-turbo was found via header file

Author: bk138

CMakeLists.txt

@@ -126,6 +126,8 @@ if(WITH_JPEG)
       file(STRINGS ${JPEGLIB_H_PATH} FOUND_LIBJPEG_TURBO REGEX "JCS_EXT_RGB")
       if(NOT FOUND_LIBJPEG_TURBO)
 	message(WARNING "*** The libjpeg library you are building against is not libjpeg-turbo.  Performance will be reduced.  You can obtain libjpeg-turbo from:  https://sourceforge.net/projects/libjpeg-turbo/files/ ***")
+      else()
+        message(STATUS "Detected libjpeg-turbo via ${JPEGLIB_H_PATH}")
       endif()
     endif()
   endif(JPEG_FOUND)