Errors "Could NOT find JPEG" and "Could NOT find Jasper" Reported When Compiling the wgrib2 Module

Symptom

During the NCEPLIBS compilation and installation, the wgrib2 module reports the two errors: "Could NOT find JPEG (missing: JPEG_LIBRARY JPEG_INCLUDE_DIR)" and "Could NOT find Jasper (missing: JASPER_LIBRARIES JASPER_INCLUDE_DIR JPEG_LIBRARIES)."

Key Process and Cause Analysis

None

Conclusion and Solution

The JASPER and JPEG installation paths are not added to the used file.

1. Modify the CMakeCache.txt file.
   1. Open the CMakeCache.txt file.

      vi /path/to/NCEPLIBS/NCEPLIBS-1.2.0/build/wgrib2/src/wgrib2-build/CMakeCache.txt

   2. Press i to enter the edit mode and add the JASPER and JPEG installation paths.

      //Path to a file.
      JASPER_INCLUDE_DIR:PATH=/path/to/JASPER/include/
      //Path to a library.
      JASPER_LIBRARY_DEBUG:FILEPATH=/path/to/JASPER/lib/
      //Path to a library.
      JASPER_LIBRARY_RELEASE:FILEPATH=/path/to/JASPER/lib/libjasper.so
      
      //Path to a file.
      JPEG_INCLUDE_DIR:PATH=/path/to/JPEG/include
      //Path to a library.
      JPEG_LIBRARY_DEBUG:FILEPATH=/path/to/JPEG/lib
      //Path to a library.
      JPEG_LIBRARY_RELEASE:FILEPATH=JPEG_LIBRARY_RELEASE-NOTFOUND

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
2. Perform the compilation again.

   make