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tools/: Link curve_keygen with a c++ linker

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When trying to linking curve_keygen as if it was a C program, linking
fails (at least with gcc 4.8 on Debian testing) because it can't find
C++ symbols. Linking with g++ instead fixes the issue.

To achieve this, the source is renamed to curve_keygen.cpp, and
tools/Makefile.am is updated accordingly.

Signed-off-by: Gergely Nagy <algernon@balabit.hu>
This commit is contained in:
Gergely Nagy
2013-12-12 11:44:12 +01:00
parent b4395d15f9
commit b50ed02a20
2 changed files with 2 additions and 2 deletions
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58
tools/curve_keygen.cpp Normal file
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@@ -0,0 +1,58 @@
/*
Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file
This file is part of 0MQ.
This tool generates a CurveZMQ keypair, as two printable strings you can
use in configuration files or source code. The encoding uses Z85, which
is a base-85 format that is described in 0MQ RFC 32, and which has an
implementation in the z85_codec.h source used by this tool. The keypair
always works with the secret key held by one party and the public key
distributed (securely!) to peers wishing to connect to it.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <platform.hpp>
#include <zmq.h>
#include <zmq_utils.h>
int main (void)
{
puts ("This tool generates a CurveZMQ keypair, as two printable strings you can");
puts ("use in configuration files or source code. The encoding uses Z85, which");
puts ("is a base-85 format that is described in 0MQ RFC 32, and which has an");
puts ("implementation in the z85_codec.h source used by this tool. The keypair");
puts ("always works with the secret key held by one party and the public key");
puts ("distributed (securely!) to peers wishing to connect to it.");
char public_key [41];
char secret_key [41];
int rc = zmq_curve_keypair (public_key, secret_key);
if (rc != 0) {
if (zmq_errno () == ENOTSUP) {
puts ("To use curve_keygen, please install libsodium and then rebuild libzmq.");
}
exit (1);
}
puts ("\n== CURVE PUBLIC KEY ==");
puts (public_key);
puts ("\n== CURVE SECRET KEY ==");
puts (secret_key);
exit (0);
}