1 If you read this file _as_is_, just ignore the funny characters you see.
2 It is written in the POD format (see pod/perlpod.pod) which is specially
3 designed to be readable as is.
7 README.mint - Perl version 5 on Atari MiNT
11 If you want to build perl yourself on MiNT (or maybe on an Atari without
12 MiNT) you may want to accept some advice from somebody who already did it...
14 There was a perl port for Atari ST done by ++jrb bammi@cadence.com.
15 This port tried very hard to build on non-MiNT-systems. For the
16 sake of efficiency I've left this way. Yet, I haven't removed bammi's
17 patches but left them intact. Unfortunately some of the files that
18 bammi contributed to the perl distribution seem to have vanished?
20 So, how can you distinguish my patches from bammi's patches? All of
21 bammi's stuff is embedded in "#ifdef atarist" preprocessor macros.
22 My MiNT port uses "#ifdef __MINT__" instead (and unconditionally
23 undefines "atarist". If you want to continue on bammi's port, all
24 you have to do is to swap the "-D" and "-U" switches for "__MINT__"
25 and "atarist" in the variable ccflags.
27 However, I think that my version will still run on non-MiNT-systems
28 provided that the user has a Eunuchs-like environment (i.e. the
29 standard envariables like $PATH, $HOME, ... are set, there is a
30 POSIX compliant shell in /bin/sh, and...)
32 =head1 Known problems with Perl on MiNT
34 The problems you may encounter when building perl on your machine
35 are most probably due to deficiencies in MiNT resp. the Atari
38 First of all, if you have less than 8 MB of RAM you shouldn't
39 even try to build Perl yourself. Better grab a binary pre-compiled
40 version somewhere. Even if you have more memory you should take
41 some care. Try to run in a fresh environment (without memory
42 fragmented too much) with as few daemons, accessories, xcontrol
43 modules etc. as possible. If you run some AES you should
44 consider to start a console based environment instead.
46 A problem has been reported with sed. Sed is used to create
47 some configuration files based on the answers you have given
48 to the Configure script. Unfortunately the Perl Configure script
49 shows sed on MiNT its limits. I have sed 2.05 with a stacksize
50 of 64k and I have encountered no problems. If sed crashes
51 during your configuration process you should first try to
52 augment sed's stacksize:
54 fixstk 64k /usr/bin/sed
56 (or similar). If it still doesn't help you may have a look
57 which other versions of sed are installed on your system.
58 If you have a KGMD 1.0 installation you will find three
59 in /usr/bin. Have a look there.
61 Perl has some "mammut" C files. If gcc reports "internal
62 compiler error: program cc1 got fatal signal 10" this is very
63 likely due to a stack overflow in program cc1. Find cc1
64 and fix its stack. I have made good experiences with
68 This doesn't establish a stack of 2 Bytes only as you might
69 think. It really reserves one half of the available memory
70 for cc1's stack. A setting of 1 would reserve the entire
71 memory for cc1, 3 would reserve three fourths. You will have
72 to find out the value that suits to your system yourself.
74 To find out the location of the program `cc1' simply type
75 `gcc --print-prog-name cc1' at your shell prompt.
77 Now run make (maybe "make -k"). If you get a fatal signal 10
78 increase cc1's stacksize, if you run out of memory you should
79 either decrease the stacksize or follow some more hints:
81 Perl's building process is very handy on machines with a lot
82 of virtual memory but may result in a desaster if you are short
83 of memory. If gcc fails to compile many source files you should
84 reduce the optimization. Grep for "optimize" in the file
85 config.sh and change the flags.
87 If only several huge files cause problems (actually it is not a
88 matter of the file size resp. the amount of code but depends on
89 the size of the individual funtions) it is useful to bypass
90 the make program and compile these files directly from the
91 command line. For example if you got something like the
94 CCCMD = gcc -DPERL_CORE ....
96 ...: virtual memory exhausted
98 you should hack into the shell:
100 gcc -DPERL_CORE ... toke.c
102 Please note that you have to add the name of the source file
103 (here toke.c) at the end.
105 If none of this helps, you're helpless. Wait for a binary
106 release. If you have succeded you may encounter another problem
107 at the linking process. If gcc complains that it can't find
108 some libraries within the perl distribution you probably have
109 an old linker. If it complains for example about "file not
110 found for xxx.olb" you should cd into the directory in
113 ln -s libxxx.a xxx.olb
115 This will fix the problem.
117 This version (5.00402) of perl has passed most of the tests on my system:
119 Failed Test Status Wstat Total Fail Failed List of failed
120 ------------------------------------------------------------------------------
121 io/pipe.t 10 2 20.00% 7, 9
122 io/tell.t 13 1 7.69% 12
123 lib/complex.t 762 13 1.71% 84-85, 248-251, 257, 272-273,
125 lib/io_pipe.t 10 1 10.00% 9
126 lib/io_tell.t 13 1 7.69% 12
127 op/magic.t 30 2 6.67% 29-30
128 Failed 6/152 test scripts, 96.05% okay. 20/4359 subtests failed, 99.54% okay.
130 Pipes always cause problems with MiNT, it's actually a surprise that
131 most of the tests did work. I've got no idea why the "tell" test failed,
132 this shouldn't mean too big a problem however.
134 Most of the failures of lib/complex seem to be harmless, actually errors
135 far right to the decimal point... Two failures seem to be serious:
136 The sign of the results is reversed. I would say that this is due
137 to minor bugs in the portable math lib that I compiled perl with.
139 I haven't bothered very much to find the reason for the failures
140 with op/magic.t and op/stat.t. Maybe you'll find it out.
142 ##########################################################################
144 Another possible problem may arise from the implementation of the "pwd"
145 command. It happened to add a carriage return and newline to its output
146 no matter what the setting of $UNIXMODE is. This is quite annoying since many
147 library modules for perl take the output of pwd, chop off the
148 trailing newline character and then expect to see a valid path in
149 that. But the carriage return (last but second character!) isn't
150 chopped off. You can either try to patch all library modules (at
151 the price of performance for the extra transformation) or you can
152 use my version of pwd that doesn't suffer from this deficiency.
154 The fixed implementation is in the mint subdirectory. Running
155 "Configure" will attempt to build and install it if necessary
156 (hints/mint.sh will do this work) but you can build and install it
162 This is the fastest solution.
164 Just in case you want to go the hard way: perl won't even build with a
165 broken pwd! You will have to fix the library modules
166 (ext/POSIX/POSIX.pm, lib/Cwd.pm, lib/pwd.pl) at last after building
169 A major nuisance of current MiNTLib versions is the implementation
170 of system() which is far from being POSIX compliant. A real system()
171 should fork and then exec /bin/sh with its argument as a command
172 line to the shell. The MiNTLib system() however doesn't expect
173 that every user has a POSIX shell in /bin/sh. It tries to work
174 around the problem by forking and exec'ing the first token in its argument
175 string. To get a little bit of compliance to POSIX system() it
176 tries to handle at least redirection ("<" or ">") on its own
179 This isn't a good idea since many programs expect that they can
180 pass a command line to system() that exploits all features of a
181 POSIX shell. If you use the MiNTLib version of system() with
182 perl the Perl function system() will suffer from the same deficiencies.
184 You will find a fixed version of system() in the mint subdirectory.
185 You can easily insert this version into your system libc:
190 ranlib /usr/lib/libc.a
192 If you are suspicious you should either back up your libc before
193 or extract the original system.o from your libc with
194 "ar x /usr/lib/libc.a system.o". You can then backup the system.o
195 module somewhere before you succeed.
197 Anything missing? Yep, I've almost forgotten...
198 No file in this distribution without a fine saying. Take this one:
200 "From a thief you should learn: (1) to work at night;
201 (2) if one cannot gain what one wants in one night to
202 try again the next night; (3) to love one's coworkers
203 just as thieves love each other; (4) to be willing to
204 risk one's life even for a little thing; (5) not to
205 attach too much value to things even though one has
206 risked one's life for them - just as a thief will resell
207 a stolen article for a fraction of its real value;
208 (6) to withstand all kinds of beatings and tortures
209 but to remain what you are; and (7) to believe your
210 work is worthwhile and not be willing to change it."
212 -- Rabbi Dov Baer, Maggid of Mezeritch
214 OK, this was my motto while working on Perl for MiNT, especially rule (1)...
222 mailto:gufl0000@stud.uni-sb.de
223 http://stud.uni-sb.de/~gufl0000