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Library control variables

An AIPS++ installation may be configured to maintain a debug version of the object libraries, an optimized version, or both as determined by the setting of these variables. They have names of the form LIB<package>, for example LIBaips, and their values consist of six fields corresponding to the debug and optimized C++, C, and FORTRAN libraries in that order,

   #                    C++            C          FORTRAN
   #                 dbg    opt    dbg    opt    dbg    opt
   #               ------------- ------------- -------------
   LIBaips      := static static defeat defeat static static

Four keywords are recognized:

• defeat: The library will not be built (and if an old version exists it will be deleted).
• static: The static library is built and is the one linked to.
• shatic: The static and shared libraries are built but the static library is the one linked to.
• shared: The static and shared libraries are built and the shared library is the one linked to.

The library control variables are used by the AIPS++ makefiles (p) to determine whether to compile the debug and/or optimized versions of an object module, and which libraries an executable may be linked with. The library updating procedure, updatelib (p), also uses them to determine which sharable libraries to build.