[MacPorts] #26320: ikiwiki gives 'Bus Error' with perl5.8

[MacPorts]

#26320: ikiwiki gives 'Bus Error' with perl5.8
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  Reporter:  geychaner@…        |       Owner:  tommyd@…           
      Type:  defect             |      Status:  reopened           
  Priority:  Normal             |   Milestone:                     
 Component:  ports              |     Version:  1.9.1              
Resolution:                     |    Keywords:                     
      Port:  ikiwiki            |  
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Comment(by geychaner@…):

 Replying to [comment:9 tommyd@…]:
 > Replying to [comment:8 geychaner@…]:
 > > IInstalling perl5 with the +perl5_10 or +perl5_12 variant before
 installing ikiwiki now fails; the log file (for perl5_10) is attached
 above.  I can't find a way to successfully install ikiwiki with the
 changes; nothing seems to work.  (I suspect the problem is with the "set
 perl_binary" lines, since the binary for perl5.10 is "perl5.10.1" and
 likewise for perl5.12.)
 >
 > Actually perl5.10 and perl5.12 should install symlinks from perl5.10.1
 to 5.10 and perl5.12.1 to perl5.12. At least these are present for me:

 Not present on my system after installing perl5 +perl5_10 or perl5
 +perl5_12.  This only appears if you have multiple versions of perl on
 your system; take a look at that awful "mangle_names" section of the
 perl5.10 portfile.

 > I'm also a bit stuck when it comes to provide a "real" fix for this
 issue - I posted a question on macports-dev
 (http://lists.macosforge.org/pipermail/macports-
 dev/2010-September/012750.html) - but didn't got answers as of now.
 > The only "hack" I could imagine here is to error out before the port is
 even fetched as soon as perl5.8 is detected. Another issue might be that
 only perl5.8 seems to install /opt/local/bin/perl, so other software which
 just depends on "some" perl version might refuse to work as well.

 If you install "perl5 +perl5_10", you get an /opt/local/bin/perl that
 points to perl5.10.1, and likewise for "perl +perl5_12".  What you might
 want to do is check whether "perl5" points to the selected version of
 perl, remembering to strip off the minor version number as done in
 "mangle_names":

 set branch [join [lrange [split ${version} .] 0 1] .]

 If NOT, then you need to set "perl_binary" to the explicit version.  If
 so, you just use "perl5".  (Of course, if someone changes their active
 perl version after installing ikiwiki, you're really in trouble...).
 Again, I just don't know how to solve this one properly.

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Ticket URL: <http://trac.macports.org/ticket/26320#comment:10>
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