Makefile.am:24: error: Libtool library used but ‘LIBTOOL‘ is undefined

编译开源软件的时候报错如下：

Makefile.am:24: error: Libtool library used but 'LIBTOOL' is undefined
Makefile.am:24:   The usual way to define 'LIBTOOL' is to add 'LT_INIT'
Makefile.am:24:   to 'configure.ac' and run 'aclocal' and 'autoconf' again.
Makefile.am:24:   If 'LT_INIT' is in 'configure.ac', make sure
Makefile.am:24:   its definition is in aclocal's search path.

原因是ubuntu缺软件，执行如下命令：

apt-get install libtool