Ccache

According to the manpage, ccache is a fast C/C++ compiler cache. It works with the gcc and clang compilers (or alike).

Reference

• ccache manual.
• https://software.intel.com/en-us/articles/accelerating-compilation-part-1-ccache

Install

On Debian / Ubuntu, ccache is available as a standard package:

sudo apt install ccache

To use ccache for compiling, just create a few symlinks. For instance, to use ccache with gcc and clang-3.6:

sudo ln -sf /usr/bin/ccache /usr/local/bin/gcc
sudo ln -sf /usr/bin/ccache /usr/local/bin/clang-3.6

This will work as long as the directory with symlinks comes before the path to the compiler (which is usually in /usr/bin).

Usage

• Collect ccache usage statistics:

ccache -s

• Set cache size:

ccache -M 2G