ctags and etags are both built from the same source file, with a 
different compile-time flag. This takes quite a while on my old desktop 
when I configure with --enable-gcc-warnings as is my usual practice. 
Also, it means two very similar executables are floating around where 
one would do. This has long been a FIXME and I finally got annoyed by 
the long compiles enough to do something about it. Patch attached.