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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 <http://www.gnu.org/licenses/>.
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 <bug-bison@gnu.org>.
Send suggestions and bug reports concerning the DJGPP port to
comp.os.msdos.djgpp or <djgpp@delorie.com>.
Enjoy.
Guerrero, Juan Manuel <juan.guerrero@gmx.de>