Hello. The machine in which autoconf-1.5 is not installed cannot build faad2. Please correct Makefile as follows. - USE_AUTOTOOLS= automake:15 autoheader:261 libtool:15 + USE_AUTOTOOLS= automake:19 autoheader:261 libtool:15 -- Tatsuki Makino <<tatsuki_makino at hotmail.com>>