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- GPC -- Gnu Pascal Compiler
- ==========================
-
- All parts of this compiler are copyrighted (C) by the Free
- Software Foundation, Inc (FSF).
-
- The Pascal run time system is donated to FSF to be distributed
- according to the FSF Library Copyright.
-
- See files COPYING and COPYING.LIB in corresponding directories
- to see the permissions you have and what you don't have when
- using this software.
-
- Everything is done with quite minimal changes to the GCC code,
- so don't be too excited if you get error messages telling that
- ANSI C denies something, or that your STRUCT definition is
- broken, and what not. (Please send me sample code that
- triggers such messages so I can fix it).
-
- I did it this way, as I wanted it to be easier to upgrade to
- new releases of GCC, and of course since it was a lot easier
- for me to modify code than to write it from scratch.
-
- There are some new files not present in the GCC; gpc-parser.y
- which is the bison parser for the language, gpc-lex.c that has
- the lexical analyzer stuff, gpc-defs.h which has definitions
- used in various places, and gpc-util.c which includes the glue
- to convert Pascal's way of thinking to the way the original
- C-oriented c-*.c files think, and most of the new routines.
-
- All changes are flagged with #ifdef GPC (except those that are
- already merged with the mainline GCC code). Some language
- independent files have also been modified, but most of the
- changes are quite minimal or if not, new code has been added
- to handle pascal. All in all, the GCC compiler is quite well
- designed to support at least these kind of languages.
-
- GPC tries to be (for now) a Level 0 ISO 7185 compatible Pascal
- processor. There are two levels in the Pascal standard; level
- 0 processors are not required to understand conformant arrays
- (this is the only difference). The conformant arrays are
- partially implemented in this version, but more likely they
- crash the compiler than work at this time.
-
- I don't have the ANSI standard, so I can't make
- the comparision between ISO & ANSI, and it not the most
- important thing now, anyway. After everything else works,
- it should be *easy* to implement the ANSI standard
- modifications to the compiler. I think.
-
- GPC also imlements a large subset of the ISO/IEC 10206
- international standard of the Extended Pascal language.
- (See GPC.GUIDE for more info).
-
- See the file PROBLEMS to find out the major problems
- of the GPC version in this directory.
-
- The file NEW-PVS-LIST contains the current results of running
- the Pascal Validation Suite conformance tests (about 199
- tests), one line (word) to tell why the test failed. PASSed
- tests are not mentioned. PVS tests also contain QUALITY
- tests, errorhandling tests, implementation dependent tests,
- but they will be checked later.
-
- ChangeLog contains a partial edit history.
-
- Yours,
-
- Juki
- jtv@hut.fi
-
- Jukka Virtanen
- Helsinki University of Technology,
- Computing Centre,
- Finland
-
- Anonymous ftp:
-
- Newest "public" gpc snapshot is available via anonymous
- ftp in host kampi.hut.fi in directory jtv/gnu-pascal
-