Hi, My MAC OS X version is 10.5.5 Model Name: Mac mini Model Identifier: Macmini1,1 Processor Name: Intel Core Duo Processor Speed: 1.66 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 2 MB Memory: 512 MB Bus Speed: 667 MHz Boot ROM Version: MM11.004B.B00 SMC Version: 1.3f2 iam using this URL for compilation pjsip on Iphone http://code.google.com/p/siphon/wiki/CompilationForiPhoneOS2_X iam getting these kind of errors, aconfigure: WARNING: you should use --build, --host, --target aconfigure: WARNING: invalid host type: ? aconfigure: WARNING: you should use --build, --host, --target aconfigure: WARNING: invalid host type: ?--disable-speex-codec aconfigure: WARNING: you should use --build, --host, --target aconfigure: WARNING: invalid host type: ? aconfigure: WARNING: you should use --build, --host, --target aconfigure: WARNING: invalid host type: ?--disable-ilbc-codec checking build system type... Invalid configuration2 `?': machine `?' not recognized aconfigure: error: /bin/sh ./config.sub ? failed Makefile:1: build.mak: No such file or directory Makefile:2: build/host-.mak: No such file or directory make: *** No rule to make target `build/host-.mak'. Stop. Makefile:1: build.mak: No such file or directory Makefile:2: build/host-.mak: No such file or directory make: *** No rule to make target `build/host-.mak'. Stop. please help in this regard Ramesh M Add more friends to your messenger and enjoy! Go to http://messenger.yahoo.com/invite/