perldos - Perl under DOS, W31, W95.
These are instructions for building Perl under DOS (or w??), using DJGPP v2.01 or later. Under w95 long filenames are supported.
Before you start, you should glance through the README file found in the top-level directory where the Perl distribution was extracted. Make sure you read and understand the terms under which this software is being distributed.
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.
DJGPP is a port of GNU C/C++ compiler and development tools to 32-bit, protected-mode environment on Intel 32-bit CPUs running MS-DOS and compatible operating systems, by DJ Delorie <firstname.lastname@example.org> and friends.
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 SimTel.Net mirror all over the world. Like:
You need the following files to build perl (or add new modules):
v2/djdev201.zip v2/bnu27b.zip v2gnu/gcc2721b.zip v2gnu/bsh1147b.zip v2gnu/mak3761b.zip v2gnu/fil316b.zip v2gnu/sed118b.zip v2gnu/txt122b.zip v2gnu/dif271b.zip v2gnu/grep21b.zip v2gnu/shl112b.zip v2gnu/gawk303b.zip v2misc/csdpmi4b.zip
or any newer version.
If you want multithreading support in perl, you need a pthread library that supports DJGPP. One of them can be found at:
But thread support is still in alpha, it may be unstable. For more information see below.
Perl under DOS lacks some features of perl under UNIX because of deficiencies in the UNIX-emulation, most notably:
before unpacking the archive.
ln -s bash.exe sh.exe
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:
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.
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).
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:
You can use the Configure script in non-interactive mode too. When I built my perl.exe, I used something like this:
configure.bat -Uuseposix -des
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:
You should see "All tests successful" if you configured a database manager, and 1 failed test script if not (lib/anydbm.t). If you configured POSIX you will see 1 additional failed subtest in lib/posix.t.
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
Multithreading support is considered alpha, because some of the tests in
ext/Thread still die with SIGSEGV (patches are welcome). But if you want to give it a try, here are the necessary steps:
The latest version is 3.5, released in Feb 98.
threads\srcand run configur.bat.
CFLAGSin the makefile. Note that using these values, multithreading will NOT be preemptive. This is necessary, since djgpp's libc is not thread safe.
*** include/pthread/signal.h~ Wed Feb 4 10:51:24 1998 --- include/pthread/signal.h Tue Feb 10 22:40:32 1998 *************** *** 364,368 **** --- 364,370 ---- #ifndef SA_ONSTACK + #ifdef SV_ONSTACK #define SA_ONSTACK SV_ONSTACK + #endif #endif /* !SA_ONSTACK */
SHELLenvironment variable does NOT point to bash).
-Dusethreadsto the commmand line of perl's configure.bat.
Laszlo Molnar, firstname.lastname@example.org