| [Autoconf](http://www.gnu.org/software/autoconf/) | Autoconf is an extensible package of M4 macros that produce shell scripts to automatically configure software source code packages. These scripts can adapt the packages to many kinds of UNIX-like systems without manual user intervention. Autoconf creates a configuration script for a package from a template file that lists the operating system features that the package can use, in the form of M4 macro calls. |
| [Automake](http://www.gnu.org/software/automake/automake.html) | Automake: GNU Standards-compliant Makefile generator |
| [Autotools](http://autotools.io) | This bundle collect the standard GNU build tools: Autoconf, Automake and libtool |
| [CMake](http://www.cmake.org) | CMake, the cross-platform, open-source build system. CMake is a family of tools designed to build, test and package software. |
| [M4](http://www.gnu.org/software/m4/m4.html) | GNU M4 is an implementation of the traditional Unix macro processor. It is mostly SVR4 compatible although it has some extensions (for example, handling more than 9 positional parameters to macros). GNU M4 also has built-in functions for including files, running shell commands, doing arithmetic, etc. |
| [ncurses](http://www.gnu.org/software/ncurses/) | The Ncurses (new curses) library is a free software emulation of curses in System V Release 4.0, and more. It uses Terminfo format, supports pads and color and multiple highlights and forms characters and function-key mapping, and has all the other SYSV-curses enhancements over BSD Curses. |
