This is a collection of autoconf macros which've been written by
various people at CMU.  To use it, use "aclocal -I cmulocal" (after
the first time, automake should automatically use the -I cmulocal, if
you've called CMU_INIT_AUTOMAKE in configure.in).

CMU_INIT_AUTOMAKE
  If you use automake, you should call this after AM_INIT_AUTOMAKE.
  It adds "-I cmulocal" to the aclocal command line, so that when
  automake runs aclocal, aclocal'll continue to pick up these macros.

CMU_ADD_LIBPATH
  Add -L(arg), and possibly -R(arg) (or whatever the runpath is) to 
  LDFLAGS.

CMU_ADD_LIBPATH_TO
  Likewise to above, except adds it to the specified variable (arg 2).

CMU_GUESS_RUNPATH_SWITCH
  Attempts to guess what the runpath switch is (-R or whatever).

CMU_COMERR
  Requires that com_err exist in the collection (at CMU, do this by
  running "cvs checkout com_err", and adding com_err to DIST_SUBDIRS
  in your Makefile.am).

  It sets the output variable COMPILE_ET to the compile_et program to
  use, and adds the appropriate paths to LDFLAGS and CPPFLAGS.

  It does *not* add -lcom_err to LIBS (this would cause later library
  checks to fail if com_err needs to be built), so Makefiles need to
  explicitly add -lcom_err (which, after all, should always exist as
  long as the com_err compile doesn't blow up).  Makefiles should do
  this by using LIB_COMERR, which will substitute to the appropriate
  magic to use to grab the library.  (This may involve a libtool archive;
  you should be using libtool to link your program if you distribute
  libraries with it that the program may link against).

  Note that com_err will only be compiled if the configure script
  can't find compile_et or libcom_err; if the system already has them,
  the configure script will use the system installation (although, due
  to some autoconf wonkiness, com_err will still be configured; it just
  won't show up in the @subdirs@ expansion).

CMU_NANA
  Adds --with-nana, set by default; if set, attempts to link against
  libnana.  If not set, or if libnana is unavailable, or if we're not
  using gcc, it defines WITHOUT_NANA.

CMU_PROG_LIBTOOL
  Just like AM_PROG_LIBTOOL, except it performs a couple little hacks
  to make sure that things don't break on picky vendor compilers
  which whine about empty translation units.

CMU_PTHREADS
  This attempts to link against libpthread (failing if it can't be found),
  and attempts to do any system-specific setup required for thread
  support (for example, most things want _REENTRANT to be defined,
  but Solaris wants _POSIX_PTHREAD_SEMANTICS and __EXTENSIONS__, IRIX
  wants to see _SGI_REENTRANT_FUNCTIONS, etc).

CMU_SASL
  This tries to find a SASL library, and calls AC_SUBST on LIB_SASL
  if it finds one, or tells the user to go ftp it if it doesn't exist.

  Provides --with-sasldir.

CMU_KRB4
  This attempts to find Kerberos 4 libraries and set up CFLAGS and LIBS
  appropriately. It also updates and substitutes RPATH for shared library 
  stuff.

