--root=		Installation root offset (NONE)
--prefix=	Default installation prefix (/usr)
--eprefix=	Execution installation prefix (/usr)
--bindir=	Bin directory ($exec-prefix/bin)
--sbindir=	System bin directory ($exec-prefix/sbin)
--libdir=	Library directory ($exec-prefix/lib)
--slibdir=	System library directory ($exec-prefix/lib)
--confdir=	Config file directory (/etc)
--share=	Shared data directory ($prefix/share)
--mandir=	Manual directory ($share/man)
--infodir=	Info file directory ($share/info)
--htmldir=	HTML Documentation ($share/html)