sys-fs/fuse-2.6.0 kernel module fails to compile when the env. variable KBUILD_OUTPUT is set. The sollution is to change ECONF_PARAMS in the ebuild to read: ECONF_PARAMS="--with-kernel=${KV_DIR} --with-kernel-build=${KV_OUT_DIR}"
*** Bug 156141 has been marked as a duplicate of this bug. ***
thanks, fixed