Package unifdef

Tool for removing ifdef'd lines

http://dotat.at/prog/unifdef/

Unifdef is useful for removing ifdefed lines from a file while otherwise
leaving the file alone. Unifdef acts on #ifdef, #ifndef, #else, and #endif
lines, and it knows only enough about C and C++ to know when one of these
is inactive because it is inside a comment, or a single or double quote.

General Commands
Command Description
unifdef remove preprocessor conditionals from code