You are building for ARM. To use the simulator the project needs to be compiled for i386. Have you tried?: export CC=/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/i686-appl e-darwin10-gcc-4.0.1 Or change line 74 in configure-iphone to for archpath in `ls -d ${SDKPATH}/usr/lib/gcc/i686-apple-darwin*`; do -----Original Message----- From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of matthias Sent: Wednesday, December 22, 2010 10:34 AM To: pjsip at lists.pjsip.org Subject: Re: building PJSIP for mac osx 10.6.5 / iphone I followed the getting started Guide but this ends up with the same result if i try to build the generated project under "pjproject/pjsip-apps/src/ipjsua" with the simulator sdk i get: ld: warning: in ../../../pjmedia/lib/libpjmedia-arm-apple-darwin9.a, file was built for unsupported file format which is not the architecture being linked (i386) and 18 other warnings that its not the correct architecture, and yes i used: export DEVPATH=/Developer/Platforms/iPhoneSimulator.platform/Developer export CC=/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 ./configure-iphone best regards, matthias _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip at lists.pjsip.org http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org