`AM_PROG_LIBTOOL' not found in library

[Pablo Sabatino]

Hello!!
I am using php4-cvs on Linux Suse 6.4.
I issued the command ./buildconf and got a message:

pablo at pablito:~/php4 > ./buildconf 
buildconf: checking installation...
buildconf: autoconf version 2.13 (ok)
buildconf: automake version 1.4 (ok)
buildconf: libtool version 1.3.5 (ok)
 

WARNING: automake and libtool are installed in different
         directories.  This may cause aclocal to fail.
         continuing anyway
aclocal: configure.in: 810: macro `AM_PROG_LIBTOOL' not found in library
make[1]: *** [aclocal.m4] Error 1
make: *** [all] Error 2
pablo at pablito:~/php4 > 

pablo at pablito:~/php4 > whereis libtool
libtool: /usr/bin/libtool /usr/local/bin/libtool /usr/share/libtool
pablo at pablito:~/php4 > whereis automake
automake: /usr/bin/automake /usr/share/automake
pablo at pablito:~/php4 > whereis automake
automake: /usr/bin/automake /usr/share/automake
pablo at pablito:~/php4 > 


I installed libtool-1.3.5.
Help me, please!!
Pablo Sabatino..