You need the following tools to build {lt}:
* **https://www.gnu.org/software/automake/manual/html_node/Autotools-Introduction.html[GNU{nbsp}Autotools]**
- (**Automake{nbsp}≥{nbsp}1.10**,
+ (**Automake{nbsp}≥{nbsp}1.12**,
**Autoconf{nbsp}≥{nbsp}2.64**, and **Autoheader{nbsp}≥{nbsp}2.50**)
* **http://www.gnu.org/software/autoconf/[GNU{nbsp}Libtool]{nbsp}≥{nbsp}2.2**