> This is too small. aclocal.m4 should contain
some macros from Automake.
> You didn't by any chance remove the AM_INIT_AUTOMAKE call from
> configure.ac in your changes?
No, I didn't touch any file.
Do you think that this is rather an autoconf/m4/coreutils/...
instead of a libtool problem? Anway, I'm currently doing a 'make check' for autoconf,
automake and m4. Maybe there is a general problem with these tools which
just happens to be a problem when trying to build libtool.