|PERLDOS(1)||Perl Programmers Reference Guide||PERLDOS(1)|
This port currently supports MakeMaker (the set of modules that is used to build extensions to perl). Therefore, you should be able to build and install most extensions found in the CPAN sites.
Detailed instructions on how to build and install perl extension modules, including XS-type modules, is included. See 'BUILDING AND INSTALLING MODULES'.
For more details (FAQ), check out the home of DJGPP at:
If you have questions about DJGPP, try posting to the DJGPP newsgroup: comp.os.msdos.djgpp, or use the email gateway email@example.com.
You can find the full DJGPP distribution on any of the mirrors listed here:
You need the following files to build perl (or add new modules):
v2/djdev203.zip v2gnu/bnu2112b.zip v2gnu/gcc2953b.zip v2gnu/bsh204b.zip v2gnu/mak3791b.zip v2gnu/fil40b.zip v2gnu/sed3028b.zip v2gnu/txt20b.zip v2gnu/dif272b.zip v2gnu/grep24b.zip v2gnu/shl20jb.zip v2gnu/gwk306b.zip v2misc/csdpmi5b.zip
or possibly any newer version.
set LFN=y set FNCASE=y
before unpacking the archive.
ln -s bash.exe sh.exe
[If you have the recommended version of bash for DJGPP, this is already done for you.]
And make the "SHELL" environment variable point to this sh.exe:
set SHELL=c:/djgpp/bin/sh.exe (use full path name!)
You can do this in djgpp.env too. Add this line BEFORE any section definition:
[If you have the recommended versions of djdev, shell utilities and gawk, all these are already done for you, and you will not need to do anything.]
set FNCASE=y configure.bat
This will do some preprocessing then run the Configure script for you. The Configure script is interactive, but in most cases you just need to press ENTER. The "set" command ensures that DJGPP preserves the letter case of file names when reading directories. If you already issued this set command when unpacking the archive, and you are in the same DOS session as when you unpacked the archive, you don't have to issue the set command again. This command is necessary *before* you start to (re)configure or (re)build perl in order to ensure both that perl builds correctly and that building XS-type modules can succeed. See the DJGPP info entry for "_preserve_fncase" for more information:
info libc alphabetical _preserve_fncase
If the script says that your package is incomplete, and asks whether to continue, just answer with Y (this can only happen if you don't use long filenames or forget to issue "set FNCASE=y" first).
When Configure asks about the extensions, I suggest IO and Fcntl, and if you want database handling then SDBM_File or GDBM_File (you need to install gdbm for this one). If you want to use the POSIX extension (this is the default), make sure that the stack size of your cc1.exe is at least 512kbyte (you can check this with: "stubedit cc1.exe").
You can use the Configure script in non-interactive mode too. When I built my perl.exe, I used something like this:
You can find more info about Configure's command line switches in the INSTALL file.
When the script ends, and you want to change some values in the generated config.sh file, then run
sh Configure -S
after you made your modifications.
IMPORTANT: if you use this "-S" switch, be sure to delete the CONFIG environment variable before running the script:
If you're lucky you should see "All tests successful". But there can be a few failed subtests (less than 5 hopefully) depending on some external conditions (e.g. some subtests fail under linux/dosemu or plain dos with short filenames only).
This will copy the newly compiled perl and libraries into your DJGPP directory structure. Perl.exe and the utilities go into "($DJDIR)/bin", and the library goes under "($DJDIR)/lib/perl5". The pod documentation goes under "($DJDIR)/lib/perl5/pod".
XS-type modules do require re-linking the perl binary, because part of an XS module is written in "C", and has to be linked together with the perl binary to be executed. This is required because perl under DJGPP is built with the "static link" option, due to the lack of "dynamic linking" in the DJGPP environment.
Because XS modules require re-linking of the perl binary, you need both the perl binary distribution and the perl source distribution to build an XS extension module. In addition, you will have to have built your perl binary from the source distribution so that all of the components of the perl binary are available for the required link step.
Unlike other DJGPP packages, which are normal "zip" files, most CPAN module packages are "gzipped tarballs". Recent versions of WinZip will safely unpack and expand them, *UNLESS* they have zero-length files. It is a known WinZip bug (as of v7.0) that it will not extract zero-length files.
From the command line, you can use the djtar utility provided with DJGPP to unpack and expand these files. For example:
C:\djgpp>djtarx -v Text-CSV-0.01.tar.gz
This will create the new directory "($DJDIR)/Text-CSV-0.01", filling it with the source for this module.
perl Makefile.PL make make test make install
This is sufficient because non-XS modules install only ".pm" files and (sometimes) pod and/or man documentation. No re-linking of the perl binary is needed to build, install or use non-XS modules.
set FNCASE=y perl Makefile.PL make make perl make test make -f Makefile.aperl inst_perl MAP_TARGET=perl.exe make install
The first extra instruction sets DJGPP's FNCASE environment variable so that the new perl binary which you must build for an XS-type module will build correctly. The second extra instruction re-builds the perl binary in your module directory before you run "make test", so that you are testing with the new module code you built with "make". The third extra instruction installs the perl binary from your module directory into the standard DJGPP binary directory, "($DJDIR)/bin", replacing your previous perl binary.
Note that the MAP_TARGET value *must* have the ".exe" extension or you will not create a "perl.exe" to replace the one in "($DJDIR)/bin".
When you are done, the XS-module install process will have added information to your "perllocal" information telling that the perl binary has been replaced, and what module was installed. You can view this information at any time by using the command:
perl -S perldoc perllocal
Peter J. Farley III firstname.lastname@example.org [Building/installing modules]