This is a port of GNU Bison @VERSION@ to MSDOS/DJGPP. Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . 1.: DJGPP specific changes. ======================= The DJGPP port of Bison offers LFN and SFN support depending on which OS it is running. If LFN support is available or not is determinated at run time. If LFN support is available (DOS session under Win9X, Win2K, WinXP, etc.) the standard posix file name extensions will be used. These are: y.tab.c, y.tab.c++, y.tab.h, y.output, etc. If only SFN support is available (plain DOS), then the standard MSDOS short file names will be used. These are: y_tab.c, y_tab.h, y.out, etc. It should be noticed that this bison version needs the m4 program as back end to generate the parser file (y.tab.c etc.) from the skeleton files. This implies that m4 must always be installed to get bison working. m4 will use a couple of m4 scripts that will be installed in /dev/env/DJDIR/share/bison and shall not be removed. It should also be noticed that the skeleton files bison.simple and bison.hairy are no longer supported. This applies also to the environ- ment variables BISON_HAIRY and BISON_SIMPLE. Those variables are *no* longer honored at all. The kind of skeleton file bison.hairy is no longer supported at all. The skeleton file bison.simple is now called yacc.c and is an m4 script. The other two skeleton files supported by this bison version are glr.c and lalr1.cc. The first one is a generalized LR C parser based on Bison's LALR(1) tables and the second one is a experimental C++ parser class. As has been told before, bison uses m4 to generate the parser file. This is done by forking and using pipes for the IPC. MSDOS does not support this functionality so this has been reproduced in the usual way by redirecting stdin and stdout of bison and m4 to temporary files and processing these files in sequence. It should be noticed that due to the great amount of file names that do not cleanly map to 8.3 file names, you will need an OS with LFN support to configure and compile the sources. On Win98 this implies that the generation of numeric tails for 8.3 file name aliases must be enabled or the compilation will fail. Please **read** the docs. 2.: Installing the binary package. ============================== 2.1.: Copy the binary distribution into the top DJGPP installation directory, just unzip it preserving the directory structure running *ONE* of the following commands: unzip32 bsn@PACKAGE_VERSION@b.zip or djtarx bsn@PACKAGE_VERSION@b.zip or pkunzip -d bsn@PACKAGE_VERSION@b.zip 3.: Building the binaries from sources. =================================== 3.1.: Create a temporary directory and copy the source package into the directory. If you download the source distribution from one of the DJGPP sites, just unzip it preserving the directory structure running *ONE* of the following commands: unzip32 bsn@PACKAGE_VERSION@s.zip or djtarx bsn@PACKAGE_VERSION@s.zip or pkunzip -d bsn@PACKAGE_VERSION@s.zip and proceed to the paragraph 3.3, below. 3.2.: Source distributions downloaded from one of the GNU FTP sites need some more work to unpack, if LFN support is not available. If LFN is available then you can extract the source files from the archive with any unzip program and proceed to the paragraph 3.3, below. Any file name issue will be handled by the the DJGPP configuration files. To unpack the source distribution on SFN systems, first, you MUST use the `djunpack' batch file to unzip the package. That is because some file names in the official distributions need to be changed to avoid problems on the various platforms supported by DJGPP. `djunpack' invokes the `djtar' program (that is part of the basic DJGPP development kit) to rename these files on the fly given a file with name mappings; the distribution includes a file `djgpp/fnchange.lst' with the necessary mappings. So you need first to retrieve that batch file, and then invoke it to unpack the distribution. Here's how: djtar -x -p -o bison-@VERSION@/djgpp/djunpack.bat bison-@VERSION@.tar.gz > djunpack.bat djunpack bison-@VERSION@.tar.gz (The name of the distribution archive and the leading directory of the path to `djunpack.bat' in the distribution will be different for versions of Bison other than @VERSION@.) If the argument to `djunpack.bat' include leading directories, it MUST be given with the DOS-style backslashes; Unix-style forward slashes will NOT work. If the distribution comes as a .tar.bz2 archive, and your version of `djtar' doesn't support bzip2 decompression, you need to unpack it as follows: bnzip2 bison-@VERSION@.tar.bz2 djtar -x -p -o bison-@VERSION@/djgpp/djunpack.bat bison-@VERSION@.tar > djunpack.bat djunpack bison-@VERSION@.tar 3.3.: To build the binaries you will need the following binary packages: djdev203.zip (or a later but NOT a prior version) bsh204b.zip (or a later but NOT a prior version) gccNNNb.zip, gppNNN.zip, bnuNNNb.zip, makNNNb.zip, filNNNb.zip, perlNNNb.zip, shlNNNb.zip, txtNNNb.zip, txiNNNb.zip, grepNNNb.zip, sedNNNb.zip and m4NNN.zip If you want to run the check you will need also: difNNNb.zip NNN represents the latest version number of the binary packages. All this packages can be found in the /v2gnu directory of any ftp.delorie.com mirror. You will need bsh204b.zip or later and *NOT* a prior version or the build will fail. The same applies to djdev203.zip. Please note that Bison requires m4-144b.zip or later to work properly. 3.4.: If for some reason you want to reconfigure the package cd into the top srcdir (bison-@TREE_VERSION@) and run the following commands: del djgpp\config.cache make clean djgpp\config Please note that you *MUST* delete the config.cache file in the djgpp subdir or you will not really reconfigure the sources because the configuration informations will be read from the cache file instead of being newly computed. To build the programs in a directory other than where the sources are, you must add the parameter that specifies the source directory, e.g: x:\src\gnu\bison-@TREE_VERSION@\djgpp\config x:/src/gnu/bison-@TREE_VERSION@ Lets assume you want to build the binaries in a directory placed on a different drive (z:\build in this case) from where the sources are, then you will run the following commands: z: md \build cd \build x:\src\gnu\bison-@TREE_VERSION@\djgpp\config x:/src/gnu/bison-@TREE_VERSION@ The order of the options and the srcdir option does not matter. You *MUST* use forward slashes to specify the source directory. The batch file will set same environment variables, make MSDOS specific modifications to the Makefile.in's and supply all other needed options to the configure script. 3.5.: To compile the package run from the top srcdir the command: make 3.6.: Now you can run the tests if you like. From the top srcdir run the command: make check No test should fail but the tests #131 (Doxygen Public Documentation) and #132 (Doxygen Private Documentation) will be skipped. Please note that the testsuite only works with LFN available. On plain DOS, most of the tests will fail due to invalid DOS names. 3.7.: To install the binaries, header, library, catalogs, and info docs run the following command from the top srcdir: make install This will install the products into your DJGPP installation tree given by the default prefix "/dev/env/DJDIR". If you prefer to install them into some other directory you will have to set prefix to the appropiate value: make install prefix=z:/some/other/place Send GNU bison specific bug reports to . Send suggestions and bug reports concerning the DJGPP port to comp.os.msdos.djgpp or . Enjoy. Guerrero, Juan Manuel