GNU GMP recently moved to naming the COPYING* files in the same way as gnulib (http://git.savannah.gnu.org/cgit/gnulib.git/tree/doc), and it includes the files COPYING.LESSERv3, COPYINGv2 and COPYINGv3, which all apply to some of the code under some circumstances.
Now, automake thinks a proper COPYING file is missing in gmp, so automake -a makes COPYING a symlink to /usr/share/automake-1.13/COPYING (which contains GPLv3), and it also displays a message "Consider adding the COPYING file to the version control system". Tested with automake-1.14.1 (debian packaged). It would be nice if automake would recognize the gnulib naming convention for COPYING* files. Best regards, /Niels -- Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26. Internet email is subject to wholesale government surveillance.