Hi all I try to compile the pjproject_1.10 for iphone and have a problem. I want to compile pjproject separately for armv6 and armv7. I have added the line ARCH='-arch armv6' at the beginning of the file ./configure-iphone and configuration finished with error configure-iphone: DEVPATH is not specified, using /Developer/Platforms/iPhoneOS.platform/Developer configure-iphone: IPHONESDK is not specified, choosing iPhoneOS4.2.sdk configure-iphone: CC is not specified, choosing /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-gcc-4.2.1 configure-iphone: CXX is not specified, using /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-g++-4.2.1 configure-iphone: calling ./aconfigure with env vars: CC = /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-gcc-4.2.1 CXX = /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-g++-4.2.1 SDKPATH = /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.2.sdk CFLAGS = -O2 -Wno-unused-label -DPJ_SDK_NAME="\"iPhoneOS4.2.sdk\"" -arch armv6 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.2.sdk LDFLAGS = -O2 -arch armv6 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.2.sdk -framework AudioToolbox -framework Foundation AR = /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/libtool -static -o RANLIB = echo ranlib aconfigure: WARNING: If you wanted to set the --build type, don't use --host. If a cross compiler is detected then cross compile mode will be used. checking build system type... i386-apple-darwin10.7.0 checking host system type... arm-apple-darwin9 checking target system type... arm-apple-darwin9 checking for arm-apple-darwin9-gcc... /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-gcc-4.2.1 checking whether the C compiler works... no aconfigure: error: in `/Users/dima/Work/PjSip/pjproject-1.10': aconfigure: error: C compiler cannot create executables See `config.log' for more details. without that line ARCH='-arch armv6' configuration and compilation finished successfully. How can I compile pjproject for armv6 and armv7 separately? Best regards, Dima.