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