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With "read-only-rootfs" in IMAGE_FEATURES, packages in ROOTFS_RO_UNNEEDED are removed when building the rootfs. The list of packages to remove is passed to the package manager and the list is sorted so that update-alternatives provider is the last entry. This is with the assumption that the last entry on the list/command line is removed last. However, it turns out rpm does not care about "last on the command line" and update-alternatives provider is removed before other the packages get to run their %preun scripts for update-alternatives. This leaves broken alternative symlinks in rootfs. The fix is to first remove all but update-alternatives provider and after that update-alternatives provider in its own remove() call. (From OE-Core rev: 0a8639593c11ef0cfb3a3a514b17e36318b8e8f2) Signed-off-by: Mikko Ylinen <mikko.ylinen@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc + qemuppc64) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.