autogen doesn't work with automake 1.15

[mcr]

On a stock debian wheezy but with an upstream autoconf/automake (1.15), but stock libtool, I get a failure from autogen.sh. It's the mismatch that breaks things. Removing the 1.15 automake from /usr/local/bin, solves the problem.

I'm just writing this for others who might have this problem.

%automake --version
automake (GNU automake) 1.15

{{{
dooku-[projects/pandora/pi/libcoap] mcr 10063 %./autogen.sh

[HINT] You can run 'autogen.sh --clean' to remove all generated files by the autotools.

Found 'autoconf'.
Found 'aclocal'.
Found 'libtool'.

---> Found all needed tools! That's fine.

Generating needed autotools files for libcoap by running autoreconf ...
autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal --force ${ACLOCAL_FLAGS} -I m4
autoreconf: configure.ac: tracing
autoreconf: configure.ac: not using Libtool
autoreconf: running: /usr/bin/autoconf --force
autoreconf: running: /usr/bin/autoheader --force
autoreconf: running: automake --add-missing --copy --force-missing
Makefile.am:40: error: Libtool library used but 'LIBTOOL' is undefined
Makefile.am:40: The usual way to define 'LIBTOOL' is to add 'LT_INIT'
Makefile.am:40: to 'configure.ac' and run 'aclocal' and 'autoconf' again.
Makefile.am:40: If 'LT_INIT' is in 'configure.ac', make sure
Makefile.am:40: its definition is in aclocal's search path.
autoreconf: automake failed with exit status: 1
}}}