Autoconf is described as 'GNU Autoconf is a tool for producing configure scripts for building, installing and packaging software on computer systems where a Bourne shell is available' and is an app in the Development category. There are more than 10 alternatives to Autoconf for a variety of platforms, including Linux, Mac, Windows, BSD and Android. The best alternative is CMake, which is both free and Open Source. Other great apps like Autoconf are GNU Make (Free, Open Source), Ninja Build (Free, Open Source), SCons (Free, Open Source) and Meson (Free, Open Source).
Ninja is a small build system with a focus on speed. It differs from other build systems in two major respects: it is designed to have its input files generated by a higher-level build system, and it is designed to run builds as fast as possible.
SCons is an Open Source software construction tool—that is, a next-generation build tool. Think of SCons as an improved, cross-platform substitute for the classic Make utility with integrated functionality similar to autoconf/automake and compiler caches such as ccache.
The main design point of Meson is that every moment a developer spends writing or debugging build definitions is a second wasted. So is every second spent waiting for the build system to actually start compiling code.
qmake is a tool from The Qt Company that helps simplify the build process for development project across different platforms. qmake automates the generation of Makefiles so that only a few lines of information are needed to create each Makefile.