On Thu, Nov 12, 2009 at 10:21 AM, Steffen Mueller <nj88ud...@sneakemail.com> wrote: > Unfortunately, there's long been an issue with running PAR::Packer generated > binaries from RH4 on RH5. It's a recurring one that's regularly raised on > par@perl.org (including a recent post by yourself). It's also an issue that > *seems* to be isolated to RedHat Linuxes. I've never used RedHat and do not > plan to do so. Therefore, I can't debug it. Nobody else has managed to do > so. Your specific issue may or may not be the same as the historic one since > it's using tons of "external" Wx shared libraries.
I don't have RedHat either :) But I'm convinced that Erez' particular problem would probably show on my Debian system, too (if configured in a certain way). The error messages for the missing *.so files are generated from Wx.pm based on a (build-time generated) list in Wx/Mini.pm. For some reason, Wx.pm doesn't trust the inter-library dependencies among the many wxwindows shared libraries that are present in the libraries themselves (i.e. NEEDED tags for Elf based systems e.g. Linux), but tries to "preload" these libraries itself (though it has no immediate use for them since all access from Perl to wxwindows goes thru the "glue" libraries provided by Wx). Unfortunately, the list of libraries in Wx/Mini.pm uses the *.so names. But the .so name is usually a symlink to ...so.1 or such and this symlink is only needed for building software (in contrast to just running a wxwindows-based application). That's why distros usually package the actual .so.N files into one package and the .so symlinks into another "development" package. Hence if you run any application using Wx.pm on a machine that hasn't accidentally installed the "dev" wxwindows package, you'll encounter Erez' problem. (I bet the Debian maintainer knows that, too, since the Debian package for Perl module Wx (libwx-perl) actually depends (though indirectly) on the development package (libwxgtk2.8-dev) for wxwindows.) To sum up: complain to the maintainer of the Wx module to stop using .so names. Cheers, Roderich
