Install autoconf by entering the following commands in the terminal:
sudo apt update sudo apt install autoconf
Description:
automatic configure script builder
The standard for FSF source packages. This is only useful if you write your own programs or if you extensively modify other people's programs. . For an extensive library of additional Autoconf macros, install the `autoconf-archive' package. . This version of autoconf is not compatible with scripts meant for Autoconf 2.13 or earlier.
Homepage: http://www.gnu.org/software/autoconf/
Version: 2.69-11
Section: devel