Sunifdef is a command line tool for eliminating
superfluous preprocessor clutter from C and C++
source files. It is a more powerful successor to
the FreeBSD 'unifdef' tool. Sunifdef is most
useful to developers of constantly evolving
products with large code bases, where preprocessor
conditionals are used to configure the feature
sets, APIs or implementations of different
releases. In these environments, the code base
steadily accumulates #ifdef-pollution as transient
configuration options become obselete. Sunifdef
can largely automate the recurrent task of purging
redundant #if logic from the code.
