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5 If you want to build perl yourself on MiNT (or maybe on an Atari without
6 MiNT) you may want to accept some advice from somebody who already did it...
8 There was a perl port for Atari ST done by ++jrb bammi@cadence.com.
9 This port tried very hard to build on non-MiNT-systems. For the
10 sake of efficiency I've left this way. Yet, I haven't removed bammi's
11 patches but left them intact. Unfortunately some of the files that
12 bammi contributed to the perl distribution seem to have vanished?
14 So, how can you distinguish my patches from bammi's patches? All of
15 bammi's stuff is embedded in "#ifdef atarist" preprocessor macros.
16 My MiNT port uses "#ifdef __MINT__" instead (and unconditionally
17 undefines "atarist". If you want to continue on bammi's port, all
18 you have to do is to swap the "-D" and "-U" switches for "__MINT__"
19 and "atarist" in the variable ccflags.
21 However, I think that my version will still run on non-MiNT-systems
22 provided that the user has a Eunuchs-like environment (i.e. the
23 standard envariables like $PATH, $HOME, ... are set, there is a
24 POSIX compliant shell in /bin/sh, and...)
29 The problems you may encounter when building perl on your machine
30 are most probably due to deficiencies in MiNT resp. the Atari
33 First of all, if you have less than 8 MB of RAM you shouldn't
34 even try to build Perl yourself. Better grab a binary pre-compiled
35 version somewhere. Even if you have more memory you should take
36 some care. Try to run in a fresh environment (without memory
37 fragmented too much) with as few daemons, accessories, xcontrol
38 modules etc. as possible. If you run some AES you should
39 consider to start a console based environment instead.
41 A problem has been reported with sed. Sed is used to create
42 some configuration files based on the answers you have given
43 to the Configure script. Unfortunately the Perl Configure script
44 shows sed on MiNT its limits. I have sed 2.05 with a stacksize
45 of 64k and I have encountered no problems. If sed crashes
46 during your configuration process you should first try to
47 augment sed's stacksize:
49 fixstk 64k /usr/bin/sed
51 (or similar). If it still doesn't help you may have a look
52 which other versions of sed are installed on your system.
53 If you have a KGMD 1.0 installation you will find three
54 in /usr/bin. Have a look there.
56 Perl has some "mammut" C files. If gcc reports "internal
57 compiler error: program cc1 got fatal signal 10" this is very
58 likely due to a stack overflow in program cc1. Find cc1
59 and fix its stack. I have made good experiences with
63 This doesn't establish a stack of 2 Bytes only as you might
64 think. It really reserves one half of the available memory
65 for cc1's stack. A setting of 1 would reserve the entire
66 memory for cc1, 3 would reserve three thirds. You will have
67 to find out the value that suits to your system yourself.
69 BTW, cc1 is maybe a little hard to find. It is generally installed
71 /usr/local/lib/gcc-lib/<platform>/<gcc-version>/cc1
73 where <platform> is probably something like "m68k-atari-mint"
74 and <version> is the gcc version you use (find out with
75 "gcc --version"). Maybe "gcc-lib" is not installed in
76 "/usr/local/lib" but "/usr/lib" on your system.
78 Now run make (maybe "make -k"). If you get a fatal signal 10
79 increase cc1's stacksize, if you run out of memory you should
80 either decrease the stacksize or follow some more hints:
82 Perl's building process is very handy on machines with a lot
83 of virtual memory but may result in a desaster if you are short
84 of memory. If gcc fails to compile many source files you should
85 reduce the optimization. Grep for "optimize" in the file
86 config.sh and change the flags.
88 If only several huge files cause problems (actually it is not a
89 matter of the file size resp. the amount of code but depends on
90 the size of the individual funtions) it is useful to bypass
91 the make program and compile these files directly from the
92 command line. For example if you got something like the
95 CCCMD = gcc -DPERL_CORE ....
97 ...: virtual memory exhausted
99 you should hack into the shell:
101 gcc -DPERL_CORE ... toke.c
103 Please note that you have to add the name of the source file
104 (here toke.c) at the end.
106 If none of this helps, you're helpless. Wait for a binary
107 release. If you have succeded you may encounter another problem
108 at the linking process. If gcc complains that it can't find
109 some libraries within the perl distribution you probably have
110 an old linker. If it complains for example about "file not
111 found for xxx.olb" you should cd into the directory in
114 ln -s libxxx.a xxx.olb
116 This will fix the problem.
118 This version (5.00402) of perl has passed most of the tests on my system:
120 Failed Test Status Wstat Total Fail Failed List of failed
121 ------------------------------------------------------------------------------
122 io/pipe.t 10 2 20.00% 7, 9
123 io/tell.t 13 1 7.69% 12
124 lib/complex.t 762 13 1.71% 84-85, 248-251, 257, 272-273,
126 lib/io_pipe.t 10 1 10.00% 9
127 lib/io_tell.t 13 1 7.69% 12
128 op/magic.t 30 2 6.67% 29-30
129 Failed 6/152 test scripts, 96.05% okay. 20/4359 subtests failed, 99.54% okay.
131 Pipes always cause problems with MiNT, it's actually a surprise that
132 most of the tests did work. I've got no idea why the "tell" test failed,
133 this shouldn't mean too big a problem however.
135 Most of the failures of lib/complex seem to be harmless, actually errors
136 far right to the decimal point... Two failures seem to be serious:
137 The sign of the results is reversed. I would say that this is due
138 to minor bugs in the portable math lib that I compiled perl with.
140 I haven't bothered very much to find the reason for the failures
141 with op/magic.t and op/stat.t. Maybe you'll find it out.
143 ##########################################################################
145 Another possible problem may arise from the implementation of the "pwd"
146 command. It happened to add a carriage return and newline to its output
147 no matter what the setting of $UNIXMODE is. This is quite annoying since many
148 library modules for perl take the output of pwd, chop off the
149 trailing newline character and then expect to see a valid path in
150 that. But the carriage return (last but second character!) isn't
151 chopped off. You can either try to patch all library modules (at
152 the price of performance for the extra transformation) or you can
153 use my version of pwd that doesn't suffer from this deficiency.
155 The fixed implementation is in the mint subdirectory. Running
156 "Configure" will attempt to build and install it if necessary
157 (hints/mint.sh will do this work) but you can build and install it
163 This is the fastest solution.
165 Just in case you want to go the hard way: perl won't even build with a
166 broken pwd! You will have to fix the library modules
167 (ext/POSIX/POSIX.pm, lib/Cwd.pm, lib/pwd.pl) at last after building
170 A major nuisance of current MiNTLib versions is the implementation
171 of system() which is far from being POSIX compliant. A real system()
172 should fork and then exec /bin/sh with its argument as a command
173 line to the shell. The MiNTLib system() however doesn't expect
174 that every user has a POSIX shell in /bin/sh. It tries to work
175 around the problem by forking and exec'ing the first token in its argument
176 string. To get a little bit of compliance to POSIX system() it
177 tries to handle at least redirection ("<" or ">") on its own
180 This isn't a good idea since many programs expect that they can
181 pass a command line to system() that exploits all features of a
182 POSIX shell. If you use the MiNTLib version of system() with
183 perl the Perl function system() will suffer from the same deficiencies.
185 You will find a fixed version of system() in the mint subdirectory.
186 You can easily insert this version into your system libc:
191 ranlib /usr/lib/libc.a
193 If you are suspicious you should either back up your libc before
194 or extract the original system.o from your libc with
195 "ar x /usr/lib/libc.a system.o". You can then backup the system.o
196 module somewhere before you succeed.
198 Anything missing? Yep, I've almost forgotten...
199 No file in this distribution without a fine saying. Take this one:
201 "From a thief you should learn: (1) to work at night;
202 (2) if one cannot gain what one wants in one night to
203 try again the next night; (3) to love one's coworkers
204 just as thieves love each other; (4) to be willing to
205 risk one's life even for a little thing; (5) not to
206 attach too much value to things even though one has
207 risked one's life for them - just as a thief will resell
208 a stolen article for a fraction of its real value;
209 (6) to withstand all kinds of beatings and tortures
210 but to remain what you are; and (7) to believe your
211 work is worthwhile and not be willing to change it."
213 -- Rabbi Dov Baer, Maggid of Mezeritch
215 OK, this was my motto while working on Perl for MiNT, especially rule (1)...
221 mailto:gufl0000@stud.uni-sb.de
222 http://stud.uni-sb.de/~gufl0000