obexfs fails to build without libusb so most probably is should depend on it. Reproducible: Always Steps to Reproduce: 1. make sure dev-libs/libusb is not installed 2. emerge sys-fs/obexfs Actual Results: checking for OBEXFTP... configure: error: Package requirements (obexftp) were not met: Package libusb was not found in the pkg-config search path. Perhaps you should add the directory containing `libusb.pc' to the PKG_CONFIG_PATH environment variable Package 'libusb', required by 'ObexFTP', not found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables OBEXFTP_CFLAGS and OBEXFTP_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details. Expected Results: obexfs emerged, in my case I guess it should pull libusb as I'm using usb-to-serial adapter.
As I've said in bug 285040, obexfs does not depend directly on the libusb. If you compile openobex with usb support, pkg-config --libs obexftp will include -lusb. Next time when you remove packets, please do the whole update procedure (emerge -uDNp, emerge --depclean, revdep-rebuild). Closed as INVALID.