wrong ELF class

morgon has asked for the wisdom of the Perl Monks concerning the following question:

Hi,

I am on a Linux-system with an old 5.8.8 Perl where I am not root and cannot get to the internet from.

What I want is readline-support for the debugger for me, so I tried to install Term::ReadLine and Term::ReadKey locally to a subdir of my home via tarballs running "perl Makefile.PL PREFIX=...; make; make install".

The installation did not give me any errors, but Term::Readkey does not work:

 perl -MTerm::ReadKey -e 1
Can't load '/home/whatever/PM/lib/site_perl/5.8.8/i686-linux-thread-mu
+lti/auto/Term/ReadKey/ReadKey.so' for module Term::ReadKey: /home/wha
+tever/PM/lib/site_perl/5.8.8/i686-linux-thread-multi/auto/Term/ReadKe
+y/ReadKey.so: wrong ELF class: ELFCLASS64 at /sysmgmt/perl/lib/perl5/
+5.8.8/i686-linux-thread-multi/DynaLoader.pm line 230.
 at -e line 0
Compilation failed in require.
BEGIN failed--compilation aborted.
>
[download]

I have not seen this before - can someone tell what the problem is here?

Many thanks!

Comment on wrong ELF class Download Code

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Re: wrong ELF class by aitap (Curate) on Jul 19, 2012 at 16:52 UTC
It seems that ether your compiler setup or your Perl setup is wrong: ReadKey.so is compiled for 64-bit system while perl binary is 32-bit. Sorry if my advice was wrong.	[reply]
Re^2: wrong ELF class by morgon (Priest) on Jul 19, 2012 at 20:49 UTC
But how can that happen? Should not MakeMaker ensure that you either can't compile or compile suitably?	[reply]
Re^3: wrong ELF class by Anonymous Monk on Jul 19, 2012 at 21:21 UTC
Grashoppah, there is no should, only do... Now back to your studies: wax on... wax off... wax on... wax off...	[reply]
Re^3: wrong ELF class by Anonymous Monk on Jul 20, 2012 at 01:51 UTC
But how can that happen? The oracle knows `[ddg://wrong ELF class: ELFCLASS64]` wrong ELF class: ELFCLASS64 -> Wrong ELF Class - requires consistent compiler flags (Surfing With a Linker Alien)	[reply] [d/l]
Re^3: wrong ELF class by aitap (Curate) on Jul 20, 2012 at 08:10 UTC
You could have 64-bit system installed and 32-bit Perl installed from somewhere else. Does running `linux32` before compiling help you to build the 32-bit module? Sorry if my advice was wrong.	[reply] [d/l]
Re: wrong ELF class by zentara (Cardinal) on Jul 19, 2012 at 17:16 UTC
Thats a pretty descriptive warning. On 64 bit linux, when I try to execute a 32 bit executable, I get a very terse message: No such file. I'm not really a human, but I play one on earth. Old Perl Programmer Haiku ................... flash japh	[reply]