Description:

distcc is a program to distribute compilation of C or C++ code across
several machines on a network. distcc should always generate the same
results as a local compile, is simple to install and use, and is often
significantly faster than a local compile.

Unlike other distributed build systems, distcc does not require all
machines to share a filesystem, have synchronized clocks, or to have
the same libraries or header files installed. Machines can be running
different operating systems, as long as they have compatible binary
formats or cross-compilers. (Currently it is being tested on gcc-linux-x86
and gcc-freebsd-x86.)

distcc is not itself a compiler, but rather a front-end to the GNU C/C++
compiler (gcc), or another compiler of your choice. All the regular gcc
options and features work as normal. (Unless there's a distcc bug, of course.

distcc is designed to be used with GNU make's parallel-build feature (-j).
Shipping files across the network takes time, but few cycles on the client
machine. Any files that can be built remotely are essentially "for free" in
terms of client CPU.