$ ldd M2
	linux-gate.so.1 =>  (0x003dd000)
	libpthread.so.0 => /lib/libpthread.so.0 (0x00ed9000)
	libncurses.so.5 => /usr/lib/libncurses.so.5 (0x0023e000)
	libdl.so.2 => /lib/libdl.so.2 (0x00110000)
	librt.so.1 => /lib/librt.so.1 (0x002e3000)
	libm.so.6 => /lib/libm.so.6 (0x0068a000)
	libc.so.6 => /lib/libc.so.6 (0x00cab000)
	/lib/ld-linux.so.2 (0x00b63000)
	libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00201000)

$ /lib/libc.so.6 
GNU C Library (Ubuntu EGLIBC 2.12.1-0ubuntu10) stable release version 2.12.1, by Roland McGrath et al.
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 4.4.5.