Add a basic framework for a test suite

The test suite uses the standard automake support. Tests are always built,
but run only when you do a "make check".

Makefile.am

@@ -1,7 +1,7 @@
 ACLOCAL_AMFLAGS = -I config
 
-SUBDIRS = src doc perf devices
-DIST_SUBDIRS = src doc perf devices builds/msvc
+SUBDIRS = src doc perf devices tests
+DIST_SUBDIRS = src doc perf devices tests builds/msvc
 
 EXTRA_DIST = \
 $(top_srcdir)/foreign/openpgm/@pgm_basename@.tar.gz \

configure.in

@@ -374,7 +374,7 @@ AC_OUTPUT(Makefile src/Makefile doc/Makefile
     perf/Makefile src/libzmq.pc \
     devices/Makefile devices/zmq_forwarder/Makefile \
     devices/zmq_streamer/Makefile devices/zmq_queue/Makefile \
-    builds/msvc/Makefile)
+    builds/msvc/Makefile tests/Makefile)
 
 #  On Linux patch libtool to delete hardcoded paths (rpath).
 case "${host_os}" in

tests/Makefile.am

@@ -0,0 +1,8 @@
+INCLUDES = -I$(top_builddir)/include
+LDADD = $(top_builddir)/src/libzmq.la
+
+noinst_PROGRAMS = simple
+
+simple_SOURCES = simple.cpp
+
+TESTS = $(noinst_PROGRAMS)

tests/simple.cpp

@@ -0,0 +1,32 @@
+/*
+    Copyright (c) 2007-2010 iMatix Corporation
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU 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
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <zmq.h>
+
+/*  This is the simplest possible test case; test if we can initialize and
+    immediately terminate a context. */
+int main (int argc, char *argv [])
+{
+    void *ctx;
+
+    ctx = zmq_init (1);
+    zmq_term (ctx);
+
+    return 0;
+}