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README.in

      1 This is a port of GNU Bison @VERSION@ to MSDOS/DJGPP.
      2 
      3 Copyright (C) 2005-2012 Free Software Foundation, Inc.
      4 
      5 This program is free software: you can redistribute it and/or modify
      6 it under the terms of the GNU General Public License as published by
      7 the Free Software Foundation, either version 3 of the License, or
      8 (at your option) any later version.
      9 
     10 This program is distributed in the hope that it will be useful,
     11 but WITHOUT ANY WARRANTY; without even the implied warranty of
     12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13 GNU General Public License for more details.
     14 
     15 You should have received a copy of the GNU General Public License
     16 along with this program.  If not, see <http://www.gnu.org/licenses/>.
     17 
     18 
     19 1.:     DJGPP specific changes.
     20 	=======================
     21 
     22 	The DJGPP port of Bison offers LFN and SFN support depending on which
     23 	OS it is running. If LFN support is available or not is determinated at
     24 	run time.  If LFN support is available (DOS session under Win9X, Win2K,
     25 	WinXP, etc.) the standard posix file name extensions will be used.
     26 	These are: y.tab.c, y.tab.c++, y.tab.h, y.output, etc.  If only SFN
     27 	support is available (plain DOS), then the standard MSDOS short file
     28 	names will be used. These are: y_tab.c, y_tab.h, y.out, etc.
     29 	It should be noticed that this bison version needs the m4 program as
     30 	back end to generate the parser file (y.tab.c etc.) from the skeleton
     31 	files.  This implies that m4 must always be installed to get bison
     32 	working.  m4 will use a couple of m4 scripts that will be installed in
     33 	/dev/env/DJDIR/share/bison and shall not be removed.
     34 	It should also be noticed that the skeleton files bison.simple and
     35 	bison.hairy are no longer supported.  This applies also to the environ-
     36 	ment variables BISON_HAIRY and BISON_SIMPLE.  Those variables are *no*
     37 	longer honored at all.
     38 	The kind of skeleton file bison.hairy is no longer supported at all.
     39 	The skeleton file bison.simple is now called yacc.c and is an m4 script.
     40 	The other two skeleton files supported by this bison version are glr.c
     41 	and lalr1.cc.  The first one is a generalized LR C parser based on
     42 	Bison's LALR(1) tables and the second one is a experimental C++ parser
     43 	class.
     44 	As has been told before, bison uses m4 to generate the parser file.
     45 	This is done by forking and using pipes for the IPC.  MSDOS does not
     46 	support this functionality so this has been reproduced in the usual
     47 	way by redirecting stdin and stdout of bison and m4 to temporary files
     48 	and processing these files in sequence.
     49 	It should be noticed that due to the great amount of file names that do
     50 	not cleanly map to 8.3 file names, you will need an OS with LFN support
     51 	to configure and compile the sources. On Win98 this implies that the
     52 	generation of numeric tails for 8.3 file name aliases must be enabled
     53 	or the compilation will fail.
     54 
     55 
     56 	Please **read** the docs.
     57 
     58 
     59 2.:     Installing the binary package.
     60 	==============================
     61 
     62 2.1.:   Copy the binary distribution into the top DJGPP installation directory,
     63 	just unzip it preserving the directory structure running *ONE* of the
     64 	following commands:
     65 	  unzip32 bsn@PACKAGE_VERSION (a] b.zip      or
     66 	  djtarx bsn@PACKAGE_VERSION (a] b.zip       or
     67 	  pkunzip -d bsn@PACKAGE_VERSION (a] b.zip
     68 
     69 
     70 
     71 3.:     Building the binaries from sources.
     72 	===================================
     73 
     74 3.1.:   Create a temporary directory and copy the source package into the
     75 	directory.  If you download the source distribution from one of the
     76 	DJGPP sites, just unzip it preserving the directory structure
     77 	running *ONE* of the following commands:
     78 	  unzip32 bsn@PACKAGE_VERSION (a] s.zip      or
     79 	  djtarx bsn@PACKAGE_VERSION (a] s.zip       or
     80 	  pkunzip -d bsn@PACKAGE_VERSION (a] s.zip
     81 	and proceed to the paragraph 3.3, below.
     82 
     83 3.2.:   Source distributions downloaded from one of the GNU FTP sites need
     84 	some more work to unpack, if LFN support is not available.  If LFN is
     85 	available then you can extract the source files from the archive with
     86 	any unzip program and proceed to the paragraph 3.3, below.  Any file
     87 	name issue will be handled by the DJGPP configuration files.
     88 	To unpack the source distribution on SFN systems, first, you MUST use
     89 	the `djunpack' batch file to unzip the package.  That is because some
     90 	file names in the official distributions need to be changed to avoid
     91 	problems on the various platforms supported by DJGPP.
     92 	`djunpack' invokes the `djtar' program (that is part of the basic DJGPP
     93 	development kit) to rename these files on the fly given a file with
     94 	name mappings; the distribution includes a file `djgpp/fnchange.lst'
     95 	with the necessary mappings.  So you need first to retrieve that batch
     96 	file, and then invoke it to unpack the distribution.  Here's how:
     97 
     98 	  djtar -x -p -o bison-@VERSION@/djgpp/djunpack.bat bison-@VERSION (a] .tar.gz > djunpack.bat
     99 	  djunpack bison-@VERSION (a] .tar.gz
    100 
    101 	(The name of the distribution archive and the leading directory of the
    102 	path to `djunpack.bat' in the distribution will be different for
    103 	versions of Bison other than @VERSION@.)
    104 
    105 	If the argument to `djunpack.bat' include leading directories, it MUST
    106 	be given with the DOS-style backslashes; Unix-style forward slashes
    107 	will NOT work.
    108 
    109 	If the distribution comes as a .tar.bz2 archive, and your version of
    110 	`djtar' doesn't support bzip2 decompression, you need to unpack it as
    111 	follows:
    112 
    113 	  bnzip2 bison-@VERSION (a] .tar.bz2
    114 	  djtar -x -p -o bison-@VERSION@/djgpp/djunpack.bat bison-@VERSION@.tar > djunpack.bat
    115 	  djunpack bison-@VERSION@.tar
    116 
    117 3.3.:   To build the binaries you will need the following binary packages:
    118 	  djdev203.zip (or a later but NOT a prior version)
    119 	  bsh204b.zip  (or a later but NOT a prior version)
    120           gccNNNb.zip, gppNNN.zip, bnuNNNb.zip, makNNNb.zip, filNNNb.zip,
    121           perlNNNb.zip, shlNNNb.zip, txtNNNb.zip, txiNNNb.zip, grepNNNb.zip,
    122           sedNNNb.zip and m4NNN.zip
    123 
    124 	If you want to run the check you will need also:
    125 	  difNNNb.zip
    126 
    127 	NNN represents the latest version number of the binary packages. All
    128 	this packages can be found in the /v2gnu directory of any
    129 	ftp.delorie.com mirror.
    130 	You will need bsh204b.zip or later and *NOT* a prior version or
    131 	the build will fail.  The same applies to djdev203.zip.  Please note
    132 	that Bison requires m4-144b.zip or later to work properly.
    133 
    134 3.4.:   If for some reason you want to reconfigure the package cd into the top
    135 	srcdir (bison-@TREE_VERSION@) and run the following commands:
    136 	  del djgpp\config.cache
    137 	  make clean
    138 	  djgpp\config
    139 
    140 	Please note that you *MUST* delete the config.cache file in the djgpp
    141 	subdir or you will not really reconfigure the sources because the
    142 	configuration informations will be read from the cache file instead
    143 	of being newly computed.
    144 	To build the programs in a directory other than where the sources are,
    145 	you must add the parameter that specifies the source directory,
    146 	e.g:
    147 	  x:\src\gnu\bison-@TREE_VERSION@\djgpp\config x:/src/gnu/bison-@TREE_VERSION@
    148 
    149 	Lets assume you want to build the binaries in a directory placed on a
    150 	different drive (z:\build in this case) from where the sources are,
    151 	then you will run the following commands:
    152 	  z:
    153 	  md \build
    154 	  cd \build
    155 	  x:\src\gnu\bison-@TREE_VERSION@\djgpp\config x:/src/gnu/bison-@TREE_VERSION@
    156 
    157 	The order of the options and the srcdir option does not matter.  You
    158 	*MUST* use forward slashes to specify the source directory.
    159 
    160 	The batch file will set same environment variables, make MSDOS specific
    161 	modifications to the Makefile.in's and supply all other needed options
    162 	to the configure script.
    163 
    164 3.5.:   To compile the package run from the top srcdir the command:
    165 	  make
    166 
    167 3.6.:   Now you can run the tests if you like.  From the top srcdir run the
    168 	command:
    169 	  make check
    170 
    171 	No test should fail but the tests #131 (Doxygen Public Documentation)
    172 	and #132 (Doxygen Private Documentation) will be skipped.  Please note
    173 	that the testsuite only works with LFN available.  On plain DOS, most
    174 	of the tests will fail due to invalid DOS names.
    175 
    176 3.7.:   To install the binaries, header, library, catalogs, and info docs
    177 	run the following command from the top srcdir:
    178 	  make install
    179 
    180 	This will install the products into your DJGPP installation tree given
    181 	by the default prefix "/dev/env/DJDIR".  If you prefer to install them
    182 	into some other directory you will have to set prefix to the appropriate
    183 	value:
    184 	  make install prefix=z:/some/other/place
    185 
    186 
    187 
    188 	Send GNU bison specific bug reports to <bug-bison (a] gnu.org>.
    189 	Send suggestions and bug reports concerning the DJGPP port to
    190 	comp.os.msdos.djgpp or <djgpp (a] delorie.com>.
    191 
    192 
    193 Enjoy.
    194 
    195 	Guerrero, Juan Manuel <juan.guerrero (a] gmx.de>
    196