ldd /lib64/libusbpp.so linux-vdso.so.1 => (0x00007fff64ffd000) libusb-0.1.so.4 => /lib/libusb-0.1.so.4 (0x00007f725cbb0000) libstdc++.so.6 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.2/libstdc++.so.6 (0x00007f725c8a5000) libm.so.6 => /lib/libm.so.6 (0x00007f725c61f000) libc.so.6 => /lib/libc.so.6 (0x00007f725c2ac000) libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00007f725c095000) /lib64/ld-linux-x86-64.so.2 (0x0000003e5ee00000) so 64-bit applications depending on /lib64/libusbpp.so fail to start if /usr is on a separate device and is not currently mounted (for example during boot). Maybe this also applies to 32-bit applications on 32-bit systems (see bug #245641). Reproducible: Always Steps to Reproduce:
fixed in 0.1.12-r5 http://sources.gentoo.org/dev-libs/libusb/libusb-0.1.12-r5.ebuild?r1=1.1&r2=1.2