CMake 2.8.12 Download: Accessing the Classic Build System Released in late 2013, is a landmark version of the cross-platform build tool that introduced several core features still used in modern C++ development today. While much newer versions are available, this specific legacy release remains vital for maintaining older software, working with outdated toolchains, or supporting legacy systems like Ubuntu 14.04 (Trusty). Official Download Links for CMake 2.8.12
Introduced a policy that makes it an error to use relative paths in INCLUDE_DIRECTORIES , enforcing better project structure. Installation Guide cmake 2.8.12 download
Depending on your operating system, there are different ways to install this specific version. CMake 2.8.12 available for download - Kitware Inc. CMake 2