root@Gargoyle2:~# lsusb
lsusb: can't load library 'libpthread.so.0'
root@Gargoyle2:~# ldd /usr/bin/lsusb
        libusb-1.0.so.0 => /usr/lib/libusb-1.0.so.0 (0x773a7000)
        libz.so.1 => /usr/lib/libz.so.1 (0x77385000)
        libc.so.0 => /lib/libc.so.0 (0x77319000)
        librt.so.0 => /lib/librt.so.0 (0x77305000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x772e2000)
        libpthread.so.0 => not found
        ld-uClibc.so.0 => /lib/ld-uClibc.so.0 (0x773c4000)
        libdl.so.0 => /lib/libdl.so.0 (0x772ce000)
        libpthread.so.0 => not found
root@Gargoyle2:~# opkg install libpthread
WARNING: Package libpthread is already installed, ignoring
         Use --force-reinstall to force reinstallation

No packages to install.