When/why does the 'missing' script run

[Dalibor Topic]

Howdy,

I'm using a patched up libtool in kaffe, and every now and then the 
'missing' script ruins a build a la

Making all in libltdl
gmake[1]: Entering directory `/tmp/topi/build/libltdl'
cd ../../kaffe/libltdl && /bin/bash /tmp/topi/kaffe/libltdl/missing 
--run autoconf
configure.ac:53: error: Autoconf version 2.58 or higher is required
aclocal.m4:524: AM_INIT_AUTOMAKE is expanded from...
configure.ac:53: the top level
autom4te: /opt/gnu/bin/m4 failed with exit status: 1
gmake[1]: *** [../../kaffe/libltdl/configure] Error 1
gmake[1]: Leaving directory `/tmp/topi/build/libltdl'
gmake: *** [all-recursive] Error 1

any idea why the 'missing' script would get run? And how to stop it from 
asking for autoconf?

cheers,
dalibor topic