| 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. |
| 4 | |
| 5 | =head1 NAME |
| 6 | |
| 7 | perldos - Perl under DOS, W31, W95. |
| 8 | |
| 9 | =head1 SYNOPSIS |
| 10 | |
| 11 | These are instructions for building Perl under DOS (or w??), using |
| 12 | DJGPP v2.01 or later. Under w95 long filenames are supported. |
| 13 | |
| 14 | =head1 DESCRIPTION |
| 15 | |
| 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. |
| 20 | |
| 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. |
| 24 | |
| 25 | =head2 Prerequisites |
| 26 | |
| 27 | =over 4 |
| 28 | |
| 29 | =item DJGPP |
| 30 | |
| 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. |
| 34 | |
| 35 | For more details (FAQ), check out the home of DJGPP at: |
| 36 | |
| 37 | http://www.delorie.com/djgpp/ |
| 38 | |
| 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. |
| 41 | |
| 42 | You can find the full DJGPP distribution on any SimTel.Net mirror all over |
| 43 | the world. Like: |
| 44 | |
| 45 | ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2* |
| 46 | |
| 47 | You need the following files to build perl (or add new modules): |
| 48 | |
| 49 | v2/djdev202.zip |
| 50 | v2/bnu27b.zip |
| 51 | v2gnu/gcc2721b.zip |
| 52 | v2gnu/bsh1147b.zip |
| 53 | v2gnu/mak3761b.zip |
| 54 | v2gnu/fil316b.zip |
| 55 | v2gnu/sed118b.zip |
| 56 | v2gnu/txt122b.zip |
| 57 | v2gnu/dif271b.zip |
| 58 | v2gnu/grep21b.zip |
| 59 | v2gnu/shl112b.zip |
| 60 | v2gnu/gawk303b.zip |
| 61 | v2misc/csdpmi4b.zip |
| 62 | |
| 63 | or possibly any newer version. |
| 64 | |
| 65 | =item Pthreads |
| 66 | |
| 67 | Thread support is not tested in this version of the djgpp perl. |
| 68 | |
| 69 | =back |
| 70 | |
| 71 | =head2 Shortcomings of Perl under DOS |
| 72 | |
| 73 | Perl under DOS lacks some features of perl under UNIX because of |
| 74 | deficiencies in the UNIX-emulation, most notably: |
| 75 | |
| 76 | =over 4 |
| 77 | |
| 78 | =item * |
| 79 | |
| 80 | fork() and pipe() |
| 81 | |
| 82 | =item * |
| 83 | |
| 84 | some features of the UNIX filesystem regarding link count and file dates |
| 85 | |
| 86 | =item * |
| 87 | |
| 88 | in-place operation is a little bit broken with short filenames |
| 89 | |
| 90 | =item * |
| 91 | |
| 92 | sockets |
| 93 | |
| 94 | =back |
| 95 | |
| 96 | =head2 Building |
| 97 | |
| 98 | =over 4 |
| 99 | |
| 100 | =item * |
| 101 | |
| 102 | Unpack the source package F<perl5.6*.tar.gz> with djtarx. If you want |
| 103 | to use long file names under w95, don't forget to use |
| 104 | |
| 105 | set LFN=y |
| 106 | |
| 107 | before unpacking the archive. |
| 108 | |
| 109 | =item * |
| 110 | |
| 111 | Create a "symlink" or copy your bash.exe to sh.exe in your C<($DJDIR)/bin> |
| 112 | directory. |
| 113 | |
| 114 | ln -s bash.exe sh.exe |
| 115 | |
| 116 | And make the C<SHELL> environment variable point to this F<sh.exe>: |
| 117 | |
| 118 | set SHELL=c:/djgpp/bin/sh.exe (use full path name!) |
| 119 | |
| 120 | You can do this in F<djgpp.env> too. Add this line BEFORE any section |
| 121 | definition: |
| 122 | |
| 123 | +SHELL=%DJDIR%/bin/sh.exe |
| 124 | |
| 125 | =item * |
| 126 | |
| 127 | If you have F<split.exe> and F<gsplit.exe> in your path, then rename |
| 128 | F<split.exe> to F<djsplit.exe>, and F<gsplit.exe> to F<split.exe>. |
| 129 | Copy or link F<gecho.exe> to F<echo.exe> if you don't have F<echo.exe>. |
| 130 | Copy or link F<gawk.exe> to F<awk.exe> if you don't have F<awk.exe>. |
| 131 | |
| 132 | =item * |
| 133 | |
| 134 | Chdir to the djgpp subdirectory of perl toplevel and type the following |
| 135 | command: |
| 136 | |
| 137 | configure.bat |
| 138 | |
| 139 | This will do some preprocessing then run the Configure script for you. |
| 140 | The Configure script is interactive, but in most cases you |
| 141 | just need to press ENTER. |
| 142 | |
| 143 | If the script says that your package is incomplete, and asks whether |
| 144 | to continue, just answer with Y (this can only happen if you don't use |
| 145 | long filenames). |
| 146 | |
| 147 | When Configure asks about the extensions, I suggest IO and Fcntl, |
| 148 | and if you want database handling then SDBM_File or GDBM_File |
| 149 | (you need to install gdbm for this one). If you want to use the |
| 150 | POSIX extension (this is the default), make sure that the stack |
| 151 | size of your F<cc1.exe> is at least 512kbyte (you can check this |
| 152 | with: C<stubedit cc1.exe>). |
| 153 | |
| 154 | You can use the Configure script in non-interactive mode too. |
| 155 | When I built my F<perl.exe>, I used something like this: |
| 156 | |
| 157 | configure.bat -des |
| 158 | |
| 159 | You can find more info about Configure's command line switches in |
| 160 | the F<INSTALL> file. |
| 161 | |
| 162 | When the script ends, and you want to change some values in the |
| 163 | generated F<config.sh> file, then run |
| 164 | |
| 165 | sh Configure -S |
| 166 | |
| 167 | after you made your modifications. |
| 168 | |
| 169 | IMPORTANT: if you use this C<-S> switch, be sure to delete the CONFIG |
| 170 | environment variable before running the script: |
| 171 | |
| 172 | set CONFIG= |
| 173 | |
| 174 | =item * |
| 175 | |
| 176 | Now you can compile Perl. Type: |
| 177 | |
| 178 | make |
| 179 | |
| 180 | =back |
| 181 | |
| 182 | =head2 Testing |
| 183 | |
| 184 | Type: |
| 185 | |
| 186 | make test |
| 187 | |
| 188 | If you're lucky you should see "All tests successful". But there can be |
| 189 | a few failed subtests (less than 5 hopefully) depending on some external |
| 190 | conditions (e.g. some subtests fail under linux/dosemu or plain dos |
| 191 | with short filenames only). |
| 192 | |
| 193 | =head2 Installation |
| 194 | |
| 195 | Type: |
| 196 | |
| 197 | make install |
| 198 | |
| 199 | This will copy the newly compiled perl and libraries into your DJGPP |
| 200 | directory structure. Perl.exe and the utilities go into C<($DJDIR)/bin>, |
| 201 | and the library goes under C<($DJDIR)/lib/perl5>. The pod documentation |
| 202 | goes under C<($DJDIR)/lib/perl5/pod>. |
| 203 | |
| 204 | =head1 AUTHOR |
| 205 | |
| 206 | Laszlo Molnar, F<laszlo.molnar@eth.ericsson.se> |
| 207 | |
| 208 | =head1 SEE ALSO |
| 209 | |
| 210 | perl(1). |
| 211 | |
| 212 | =cut |
| 213 | |