1 If you read this file _as_is_, just ignore the funny characters you
2 see. It is written in the POD format (see perlpod manpage) which is
3 specially designed to be readable as is.
7 perldos - Perl under DOS, W31, W95.
11 These are instructions for building Perl under DOS (or w??), using
12 DJGPP v2.01 or later. Under w95 long filenames are supported.
16 Before you start, you should glance through the README file
17 found in the top-level directory where the Perl distribution
18 was extracted. Make sure you read and understand the terms under
19 which this software is being distributed.
21 This port currently supports MakeMaker (the set of modules that
22 is used to build extensions to perl). Therefore, you should be
23 able to build and install most extensions found in the CPAN sites.
31 DJGPP is a port of GNU C/C++ compiler and development tools to 32-bit,
32 protected-mode environment on Intel 32-bit CPUs running MS-DOS and compatible
33 operating systems, by DJ Delorie <dj@delorie.com> and friends.
35 For more details (FAQ), check out the home of DJGPP at:
37 http://www.delorie.com/djgpp/
39 If you have questions about DJGPP, try posting to the DJGPP newsgroup:
40 comp.os.msdos.djgpp, or use the email gateway djgpp@delorie.com.
42 You can find the full DJGPP distribution on any SimTel.Net mirror all over
45 ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2*
47 You need the following files to build perl (or add new modules):
67 If you want multithreading support in perl, you need a pthread library
68 that supports DJGPP. One of them can be found at:
70 ftp://ftp.cs.fsu.edu/pub/PART/PTHREADS/pthreads.zip
72 But thread support is still in alpha, it may be unstable. For more information
77 =head2 Shortcomings of Perl under DOS
79 Perl under DOS lacks some features of perl under UNIX because of
80 deficiencies in the UNIX-emulation, most notably:
90 some features of the UNIX filesystem regarding link count and file dates
94 in-place operation is a little bit broken with short filenames
108 Unpack the source package F<perl5.00?_??.tar.gz> with djtarx. If you want
109 to use long file names under w95, don't forget to use
113 before unpacking the archive.
117 Create a "symlink" or copy your bash.exe to sh.exe in your C<($DJDIR)/bin>
120 ln -s bash.exe sh.exe
122 And make the C<SHELL> environment variable point to this F<sh.exe>:
124 set SHELL=c:/djgpp/bin/sh.exe (use full path name!)
126 You can do this in F<djgpp.env> too. Add this line BEFORE any section
129 +SHELL=%DJDIR%/bin/sh.exe
133 If you have F<split.exe> and F<gsplit.exe> in your path, then rename
134 F<split.exe> to F<djsplit.exe>, and F<gsplit.exe> to F<split.exe>.
135 Copy or link F<gecho.exe> to F<echo.exe> if you don't have F<echo.exe>.
136 Copy or link F<gawk.exe> to F<awk.exe> if you don't have F<awk.exe>.
140 Chdir to the djgpp subdirectory of perl toplevel and type the following
145 This will do some preprocessing then run the Configure script for you.
146 The Configure script is interactive, but in most cases you
147 just need to press ENTER.
149 If the script says that your package is incomplete, and asks whether
150 to continue, just answer with Y (this can only happen if you don't use
153 When Configure asks about the extensions, I suggest IO and Fcntl,
154 and if you want database handling then SDBM_File or GDBM_File
155 (you need to install gdbm for this one). If you want to use the
156 POSIX extension (this is the default), make sure that the stack
157 size of your F<cc1.exe> is at least 512kbyte (you can check this
158 with: C<stubedit cc1.exe>).
160 You can use the Configure script in non-interactive mode too.
161 When I built my F<perl.exe>, I used something like this:
163 configure.bat -Uuseposix -des
165 You can find more info about Configure's command line switches in
168 When the script ends, and you want to change some values in the
169 generated F<config.sh> file, then run
173 after you made your modifications.
175 IMPORTANT: if you use this C<-S> switch, be sure to delete the CONFIG
176 environment variable before running the script:
182 Now you can compile Perl. Type:
194 You should see "All tests successful" if you configured a database
195 manager, and 1 failed test script if not (F<lib/anydbm.t>). If you
196 configured POSIX you will see 1 additional failed subtest in F<lib/posix.t>.
204 This will copy the newly compiled perl and libraries into your DJGPP
205 directory structure. Perl.exe and the utilities go into C<($DJDIR)/bin>,
206 and the library goes under C<($DJDIR)/lib/perl5>. The pod documentation
207 goes under C<($DJDIR)/lib/perl5/pod>.
209 =head2 Threaded perl under dos-djgpp
211 Multithreading support is considered alpha, because some of the
212 tests in C<ext/Thread> still die with SIGSEGV (patches are welcome). But
213 if you want to give it a try, here are the necessary steps:
219 1. You will need a pthread library which supports djgpp. Go, and download
222 ftp://ftp.cs.fsu.edu/pub/PART/PTHREADS/pthreads.zip
224 The latest version is 3.5, released in Feb 98.
228 2. Unzip the file, cd to C<threads\src> and run F<configur.bat>.
232 3. Add C<RAND_SWITCH> or C<MUTEX_SWITCH> or C<RR_SWITCH> to C<CFLAGS>
233 in the F<makefile>. Note that using these values, multithreading will
234 NOT be preemptive. This is necessary, since djgpp's libc is not thread safe.
238 4. Apply the following patch:
240 *** include/pthread/signal.h~ Wed Feb 4 10:51:24 1998
241 --- include/pthread/signal.h Tue Feb 10 22:40:32 1998
248 #define SA_ONSTACK SV_ONSTACK
250 #endif /* !SA_ONSTACK */
254 5. run make (before you do this, you must make sure your C<SHELL> environment
255 variable does NOT point to bash).
259 6. Install the library and header files into your djgpp directory structure.
263 7. Add C<-Dusethreads> to the commmand line of perl's F<configure.bat>.
269 Laszlo Molnar, F<laszlo.molnar@eth.ericsson.se>