Problem Configuration

Hello, i am emailing you for the reason of that i just downloaded  the prolog version 1.3 and i tried  to install it on my mac 0SX 10.5 but it doest work.I configured the system as it said but the system is not recognized then the configuration fails, so i cannot go to the next step for to make the installation.This is an overview of my terminal when i try to configure the system: (maybe it s going to help you )configure: WARNING: you should use --build, --host, --targetconfigure: WARNING: invalid host type: [options]checking for [options]-gcc... nochecking for gcc... gccchecking for C compiler default output file name... a.outchecking whether the C compiler works... yeschecking whether we are cross compiling... nochecking for suffix of executables... checking for suffix of object files... ochecking whether we are using the GNU C compiler... yeschecking whether gcc accepts -g... yeschecking for gcc option to accept ISO C89... none neededchecking for [options]-ranlib... nochecking for ranlib... ranlibchecking whether make sets $(MAKE)... yeschecking for a BSD-compatible install... /usr/bin/install -cchecking whether ln -s works... yeschecking build system type... Invalid configuration `[options]': machine `[options]' not recognizedconfigure: error: /bin/sh ./config.sub [options] failedThanking you to help me for to make this installation done, because i really want to use prolog for my personal work.From CHOUAHA Mansouremail: [email protected] 
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