configure e$B$Ke(B --with-opt-dir=/usr/local e$B$H;XDj$9$k$H!"e(B
configure: WARNING: unrecognized options: --with-opt-dir
e$B$H$$$&7Y9p$,=P$^$9!#e(B
% autoconf
% ./configure --with-opt-dir=/usr/local
configure: WARNING: unrecognized options: --with-opt-dir
checking build system type… i686-pc-linux-gnu
checking host system type… i686-pc-linux-gnu
checking target system type… i686-pc-linux-gnu
checking for gcc… gcc
…
checking for if make is GNU make… yes
checking for nroff… /usr/bin/nroff
.ext/include/i686-linux/ruby/config.h updated
ruby library version = 1.9.1
configure: creating ./config.status
config.status: creating Makefile
configure: WARNING: unrecognized options: --with-opt-dir
% uname -a
Linux nute 2.6.26-1-486 #1 Fri Mar 13 17:25:45 UTC 2009 i686 GNU/Linux