--prefix=/usr -el forgattam.
$ ldd /usr/lib/libcuda.so
linux-vdso.so.1 => (0x00007fffb37ff000)
libpthread.so.0 => /lib/libpthread.so.0 (0x00007f07aaf72000)
libz.so.1 => /usr/lib/libz.so.1 (0x00007f07aad5d000)
libdl.so.2 => /lib/libdl.so.2 (0x00007f07aab59000)
libm.so.6 => /lib/libm.so.6 (0x00007f07aa8d6000)
libc.so.6 => /lib/libc.so.6 (0x00007f07aa581000)
/lib/ld-linux-x86-64.so.2 (0x00007f07ab64a000)