Aclocal: configure.in: 51: macro `AM_PROG_LIBTOOL' not found in library

SDL Development
1

Latest build in CVS as of 23:00:00 (PST).

Linux …

./configure
…

make
cd . && aclocal
aclocal: configure.in: 51: macro `AM_PROG_LIBTOOL’ not found in library
make: *** [aclocal.m4] Error 1-----

Am I doing something wrong?