New features in version 0.25.0
==============================

Binaries (`grppars' and `grp2c') has been extended with a new command
line option `-e' which turns format of error messages to old format
which is suitable for Emacs. New format has been introduced for error
messages:

grpfile:line:app-name:proc-name:item-ID:port-ID:error-code: error string

GRP parser
----------

Lexical analyser's rule of identifications has been
modified. Identifications can contain "-" characters.

Format of error messages has been changed to new format (see
above). Old format can be used with `-e' command line option.

Bug in calculating exit code of `grppars' utility has been fixed. Exit
codes of `grppars' program are follows:

  0 - success.
  1 - wrong option.
  2 - no execution required.
  3 - parser error.

GRP code generator
------------------

Format of error messages has been changed to new format (see
above). Old format is not available any more (`-e' command line option
changes format of the parser's messages but not of code generator's).

New targets have been introduced in generated Makefile. They are
`clean', `realclean', `install', and `install_t'.

New option have been introduced for `grp2c'. Using `-I dir' the
directory where the generated Makefile installs binaries can be
spacified. Default directory is `$HOME/pvm3/bin/$PVM_ARCH'.

Generated server program has been extended with version number
checking. After checking command line options, server program checks
version numbers of different part of the Grapnel System. Version
number of Grapnel Library, DDstuff Library, and installed header files
must be same as version number of grp2c program which was used to
produce the source code of the server program. If unmatched version
number is found, the server stops with exit code 2.Version number
cheking can be skipped using `-f' command line option.

Generating cross reference records has been changed according to
reqironments of GRED program. DUMMYB item produces a debug record
which contains line number of generated `grp_start' function. DUMMYE
item produces a debug record which contains line number of generated
`grp_exit' function.

GRP library
-----------

Support of bidirectional channels have been implemented. Definition of
the `struct channel' type has been changed. `src' and `dest' fields
has been removed and `remote' field has been introduced.

Parameter of the `grp_start()' function has been removed, this
function must be called without parameters.

Obsolete definitions have been removed from `grpdef.h'.

Detection of pvm system is fixed. `grp_start_server' function returns
TRUE if pvm is running.

DDstuff Library has been changed. New function `DDstuffVersion' has
been added to the library. It returns the version of the library.

`Init' function has been extended with two `char *' parameters. First
of the new parameters is printed as version number of grp2c program
when the server application is invoked with `-v' option. Second of the
new parameters is printed as version number of header files. The
`Init' function recognizes new options `-v' and `-f'. Invoking server
program with `-v' option, the `Init' function prints out version
number information about grp2c program which was used to produce
source files, DDstuff Library, Grapnel Library, and installed header
files. After printing out version numbers, the `Init' function stops
the program with exit code 0. Using `-f' option turns `Force' global
variables to TRUE, if it is TRUE, the server program skips version
number cheking.

Aug 18, 1996.