Hi, With kbuild, we can build external modules using: make -C $KERNEL_BUILDDIR M=$PWD But I'm looking for the proper way to not clobber my module source directory with files from the build, eg. I'd like the build to output the files in another directory. I'd like to do: mkdir obj-$ARCH cd obj-$ARCH make -C $KERNEL_BUILDDIR M=$PWD/.. O=$PWD But O= is not supported for external module. It can only be used when building the kernel (and its modules) itself. I have found people explaining that the currently only way is to copy/link the sources inside the object directory. But I find this tasteless and error prone. Do someone know another method or a patch to the kbuild system to improve external module compilation ? Regards. -- Yann Droneaud OPTEYA