alpha@virtual:~//gnupg-2.1.0$ ./agent/gpg-agent --version
./agent/gpg-agent: /lib/i386-linux-gnu/libgpg-error.so.0: no version information available (required by ./agent/gpg-agent)
./agent/gpg-agent: /lib/i386-linux-gnu/libgpg-error.so.0: no version information available (required by /usr/local/lib/libgcrypt.so.20)
./agent/gpg-agent: relocation error: ./agent/gpg-agent: symbol gpgrt_set_alloc_func, version GPG_ERROR_1.0 not defined in file libgpg-error.so.0 with link time reference