Hi, The tool rpm2cpio (from rpm package) is not available for usage in SDK. After sourcing the SDK it still uses the hosts rpm2cpio: $ . ./environment-setup-armv7a-vfp-neon-wrs-linux-gnueabi $ which rpm2cpio /usr/bin/rpm2cpio We find the following files in SDK: $ find . | grep rpm2cpio ./sysroots/x86_64-wrlinuxsdk-linux/usr/lib/rpm/rpm2cpio ./sysroots/x86_64-wrlinuxsdk-linux/usr/bin/rpm2cpio.real RPM tool itself is using the SDK version: $ which rpm /repo/eanhedl/sdk/sdk_rpm2cpio/sysroots/x86_64-wrlinuxsdk-linux/usr/bin/rpm We are using WRL8 RCPL4.