Merge pull request #492 from arsenm/master

Make CMake build usable for other systems

builds/cmake/platform.hpp.in

@@ -0,0 +1,91 @@
+#ifndef __ZMQ_PLATFORM_HPP_INCLUDED__
+#define __ZMQ_PLATFORM_HPP_INCLUDED__
+
+#cmakedefine ZMQ_FORCE_SELECT
+#cmakedefine ZMQ_FORCE_POLL
+#cmakedefine ZMQ_FORCE_EPOLL
+#cmakedefine ZMQ_FORCE_DEVPOLL
+#cmakedefine ZMQ_FORCE_KQUEUE
+#cmakedefine ZMQ_FORCE_SELECT
+#cmakedefine ZMQ_FORCE_POLL
+
+#cmakedefine ZMQ_FORCE_MUTEXES
+
+
+#cmakedefine HAVE_CLOCK_GETTIME
+#cmakedefine HAVE_GETHRTIME
+#cmakedefine ZMQ_HAVE_UIO
+
+#cmakedefine ZMQ_HAVE_EVENTFD
+#cmakedefine ZMQ_HAVE_IFADDRS
+
+#cmakedefine ZMQ_HAVE_SOCK_CLOEXEC
+#cmakedefine ZMQ_HAVE_SO_KEEPALIVE
+#cmakedefine ZMQ_HAVE_TCP_KEEPCNT
+#cmakedefine ZMQ_HAVE_TCP_KEEPIDLE
+#cmakedefine ZMQ_HAVE_TCP_KEEPINTVL
+#cmakedefine ZMQ_HAVE_TCP_KEEPALIVE
+
+#cmakedefine ZMQ_HAVE_OPENPGM
+#cmakedefine ZMQ_MAKE_VALGRIND_HAPPY
+
+
+#ifdef _AIX
+  #define ZMQ_HAVE_AIX
+#endif
+
+#if defined ANDROID
+  #define ZMQ_HAVE_ANDROID
+#endif
+
+#if defined __CYGWIN__
+  #define ZMQ_HAVE_CYGWIN
+#endif
+
+#if defined __MINGW32__
+  #define ZMQ_HAVE_MINGW32
+#endif
+
+#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
+  #define ZMQ_HAVE_FREEBSD
+#endif
+
+#if defined __hpux
+  #define ZMQ_HAVE_HPUX
+#endif
+
+#if defined __linux__
+  #define ZMQ_HAVE_LINUX
+#endif
+
+#if defined __NetBSD__
+  #define ZMQ_HAVE_NETBSD
+#endif
+
+#if defined __OpenBSD__
+  #define ZMQ_HAVE_OPENBSD
+#endif
+
+#if defined __VMS
+  #define ZMQ_HAVE_OPENVMS
+#endif
+
+#if defined __APPLE__
+  #define ZMQ_HAVE_OSX
+#endif
+
+#if defined __QNXNTO__
+  #define ZMQ_HAVE_QNXNTO
+#endif
+
+#if defined(sun) || defined(__sun)
+  #define ZMQ_HAVE_SOLARIS
+#endif
+
+#if defined(WIN32) || defined(_WIN32)
+  #define ZMQ_HAVE_WINDOWS
+#endif
+
+
+
+#endif

cmake/Modules/FindAsciiDoc.cmake

@@ -0,0 +1,24 @@
+# - Find Asciidoc
+# this module looks for asciidoc and a2x
+#
+# ASCIIDOC_EXECUTABLE - the full path to asciidoc
+# ASCIIDOC_FOUND - If false, don't attempt to use asciidoc.
+# A2X_EXECUTABLE - the full path to a2x
+# A2X_FOUND - If false, don't attempt to use a2x.
+
+find_program(ASCIIDOC_EXECUTABLE asciidoc asciidoc.py
+             PATHS "$ENV{ASCIIDOC_ROOT}"
+                   "$ENV{PROGRAMW6432}/asciidoc"
+                   "$ENV{PROGRAMFILES}/asciidoc"
+                   "$ENV{PROGRAMFILES(X86)}/asciidoc")
+
+find_program(A2X_EXECUTABLE a2x
+             PATHS "$ENV{ASCIIDOC_ROOT}"
+                   "$ENV{PROGRAMW6432}/asciidoc"
+                   "$ENV{PROGRAMFILES}/asciidoc"
+                   "$ENV{PROGRAMFILES(X86)}/asciidoc")
+
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_ARGS(AsciiDoc REQUIRED_VARS ASCIIDOC_EXECUTABLE)
+mark_as_advanced(ASCIIDOC_EXECUTABLE A2X_EXECUTABLE)

cmake/Modules/TestZMQVersion.cmake

@@ -1,35 +1,18 @@
 
-  MESSAGE(STATUS "Detecting ZMQ")
-        SET(TRY_RUN_DIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/zmq_run.dir)
+file(READ "${PROJECT_SOURCE_DIR}/include/zmq.h" _ZMQ_H_CONTENTS)
+string(REGEX REPLACE ".*#define ZMQ_VERSION_MAJOR ([0-9]+).*" "\\1" ZMQ_VERSION_MAJOR "${_ZMQ_H_CONTENTS}")
+string(REGEX REPLACE ".*#define ZMQ_VERSION_MINOR ([0-9]+).*" "\\1" ZMQ_VERSION_MINOR "${_ZMQ_H_CONTENTS}")
+string(REGEX REPLACE ".*#define ZMQ_VERSION_PATCH ([0-9]+).*" "\\1" ZMQ_VERSION_PATCH "${_ZMQ_H_CONTENTS}")
+set(ZMQ_VERSION "${ZMQ_VERSION_MAJOR}.${ZMQ_VERSION_MINOR}.${ZMQ_VERSION_PATCH}")
 
-        TRY_RUN(RUN_RESULT COMPILE_RESULT
-          ${TRY_RUN_DIR}
-          ${CMAKE_SOURCE_DIR}/cmake/Modules/zmq_version.cpp
-          CMAKE_FLAGS 
-            "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_SOURCE_DIR}/include"
-          COMPILE_OUTPUT_VARIABLE COMPILE_OUTPUT
-          RUN_OUTPUT_VARIABLE RUN_OUTPUT)
+message(STATUS "Detected ZMQ Version - ${ZMQ_VERSION}")
 
-        IF(COMPILE_RESULT)
-          IF(RUN_RESULT MATCHES "FAILED_TO_RUN")
-            MESSAGE(STATUS "Detecting ZMQ - failed")
-          ELSE()
-            STRING(REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+).*" "\\1" ZMQ_VERSION_MAJOR "${RUN_OUTPUT}")
-            STRING(REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+).*" "\\2" ZMQ_VERSION_MINOR "${RUN_OUTPUT}")
-            STRING(REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+).*" "\\3" ZMQ_VERSION_PATCH "${RUN_OUTPUT}")
-            MESSAGE(STATUS "Detecting ZMQ - ${ZMQ_VERSION_MAJOR}.${ZMQ_VERSION_MINOR}.${ZMQ_VERSION_PATCH}")
-          ENDIF()
-        ELSE()
-          MESSAGE(STATUS "Check for ZMQ version - not found")
-          MESSAGE(STATUS "Detecting ZMQ - failed")
-        ENDIF()
-
-  if(MSVC_VERSION MATCHES "1700")
-    set(_zmq_COMPILER "-v110")
-  elseif(MSVC10)
-    set(_zmq_COMPILER "-v100")
-  elseif(MSVC90)
-    set(_zmq_COMPILER "-v90")
-  else()
-    set(_zmq_COMPILER "")
-  endif()
+if(MSVC_VERSION MATCHES "1700")
+  set(_zmq_COMPILER "-v110")
+elseif(MSVC10)
+  set(_zmq_COMPILER "-v100")
+elseif(MSVC90)
+  set(_zmq_COMPILER "-v90")
+else()
+  set(_zmq_COMPILER "")
+endif()

cmake/Modules/ZMQSourceRunChecks.cmake

@@ -0,0 +1,129 @@
+
+
+macro(zmq_check_sock_cloexec)
+  message(STATUS "Checking whether SOCK_CLOEXEC is supported")
+  check_c_source_runs(
+    "
+#include <sys/types.h>
+#include <sys/socket.h>
+
+int main(int argc, char *argv [])
+{
+    int s = socket(PF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
+    return(s == -1);
+}
+"
+    ZMQ_HAVE_SOCK_CLOEXEC)
+endmacro()
+
+# TCP keep-alives Checks.
+
+macro(zmq_check_so_keepalive)
+  message(STATUS "Checking whether SO_KEEPALIVE is supported")
+  check_c_source_runs(
+"
+#include <sys/types.h>
+#include <sys/socket.h>
+
+int main(int argc, char *argv [])
+{
+    int s, rc, opt = 1;
+    return(
+       ((s = socket(PF_INET, SOCK_STREAM, 0)) == -1) ||
+       ((rc = setsockopt(s, SOL_SOCKET, SO_KEEPALIVE,(char*) &opt, sizeof(int))) == -1)
+    );
+}
+"
+    ZMQ_HAVE_SO_KEEPALIVE)
+endmacro()
+
+macro(zmq_check_tcp_keepcnt)
+  message(STATUS "Checking whether TCP_KEEPCNT is supported")
+  check_c_source_runs(
+    "
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+int main(int argc, char *argv [])
+{
+    int s, rc, opt = 1;
+    return(
+       ((s = socket(PF_INET, SOCK_STREAM, 0)) == -1) ||
+       ((rc = setsockopt(s, SOL_SOCKET, SO_KEEPALIVE,(char*) &opt, sizeof(int))) == -1) ||
+       ((rc = setsockopt(s, IPPROTO_TCP, TCP_KEEPCNT,(char*) &opt, sizeof(int))) == -1)
+    );
+}
+"
+    ZMQ_HAVE_TCP_KEEPCNT)
+endmacro()
+
+macro(zmq_check_tcp_keepidle)
+  message(STATUS "Checking whether TCP_KEEPIDLE is supported")
+  check_c_source_runs(
+    "
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+int main(int argc, char *argv [])
+{
+    int s, rc, opt = 1;
+    return(
+       ((s = socket(PF_INET, SOCK_STREAM, 0)) == -1) ||
+       ((rc = setsockopt(s, SOL_SOCKET, SO_KEEPALIVE,(char*) &opt, sizeof(int))) == -1) ||
+       ((rc = setsockopt(s, IPPROTO_TCP, TCP_KEEPIDLE,(char*) &opt, sizeof(int))) == -1)
+    );
+}
+"
+    ZMQ_HAVE_TCP_KEEPIDLE)
+endmacro()
+
+
+macro(zmq_check_tcp_keepintvl)
+  message(STATUS "Checking whether TCP_KEEPINTVL is supported")
+  check_c_source_runs(
+    "
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+int main(int argc, char *argv [])
+{
+    int s, rc, opt = 1;
+    return(
+       ((s = socket(PF_INET, SOCK_STREAM, 0)) == -1) ||
+       ((rc = setsockopt(s, SOL_SOCKET, SO_KEEPALIVE,(char*) &opt, sizeof(int))) == -1) ||
+       ((rc = setsockopt(s, IPPROTO_TCP, TCP_KEEPINTVL,(char*) &opt, sizeof(int))) == -1)
+    );
+}
+
+"
+    ZMQ_HAVE_TCP_KEEPINTVL)
+endmacro()
+
+
+macro(zmq_check_tcp_keepalive)
+  message(STATUS "Checking whether TCP_KEEPALIVE is supported")
+  check_c_source_runs(
+    "
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+int main(int argc, char *argv [])
+{
+    int s, rc, opt = 1;
+    return(
+       ((s = socket(PF_INET, SOCK_STREAM, 0)) == -1) ||
+       ((rc = setsockopt(s, SOL_SOCKET, SO_KEEPALIVE,(char*) &opt, sizeof(int))) == -1) ||
+       ((rc = setsockopt(s, IPPROTO_TCP, TCP_KEEPALIVE,(char*) &opt, sizeof(int))) == -1)
+    );
+}
+"
+    ZMQ_HAVE_TCP_KEEPALIVE)
+endmacro()

cmake/Modules/zmq_version.cpp

@@ -1,31 +0,0 @@
-/*
-    Copyright (c) 2007-2012 iMatix Corporation
-    Copyright (c) 2009-2011 250bpm s.r.o.
-    Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
-
-    This file is part of 0MQ.
-
-    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 "zmq.h"
-
-#include <stdio.h>
-
-int main ()
-{
-    printf ("%d.%d.%d\n", ZMQ_VERSION_MAJOR, ZMQ_VERSION_MINOR, ZMQ_VERSION_PATCH);
-    return 0;
-}
-

perf/inproc_lat.cpp

@@ -26,7 +26,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "../src/platform.hpp"
+#include "platform.hpp"
 
 #if defined ZMQ_HAVE_WINDOWS
 #include <windows.h>

perf/inproc_thr.cpp

@@ -26,7 +26,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "../src/platform.hpp"
+#include "platform.hpp"
 
 #if defined ZMQ_HAVE_WINDOWS
 #include <windows.h>

src/decoder.hpp

@@ -163,7 +163,7 @@ namespace zmq
             return false;
         }
 
-        inline bool message_ready_size (size_t msg_sz)
+        inline bool message_ready_size (size_t /* msg_sz */)
         {
             zmq_assert (false);
             return false;

src/i_decoder.hpp

@@ -30,8 +30,9 @@ namespace zmq
 
     //  Interface to be implemented by message decoder.
 
-    struct i_decoder
+    class i_decoder
     {
+    public:
         virtual ~i_decoder () {}
 
         virtual void set_msg_sink (i_msg_sink *msg_sink_) = 0;

src/i_msg_sink.hpp

@@ -29,8 +29,9 @@ namespace zmq
 
     //  Interface to be implemented by message sink.
 
-    struct i_msg_sink
+    class i_msg_sink
     {
+    public:
         virtual ~i_msg_sink () {}
 
         //  Delivers a message. Returns 0 if successful; -1 otherwise.

src/i_msg_source.hpp

@@ -29,8 +29,9 @@ namespace zmq
 
     //  Interface to be implemented by message source.
 
-    struct i_msg_source
+    class i_msg_source
     {
+    public:
         virtual ~i_msg_source () {}
 
         //  Fetch a message. Returns 0 if successful; -1 otherwise.

src/ip.cpp

@@ -73,11 +73,11 @@ zmq::fd_t zmq::open_socket (int domain_, int type_, int protocol_)
 
 void zmq::unblock_socket (fd_t s_)
 {
-#ifdef ZMQ_HAVE_WINDOWS
+#if defined ZMQ_HAVE_WINDOWS
     u_long nonblock = 1;
     int rc = ioctlsocket (s_, FIONBIO, &nonblock);
     wsa_assert (rc != SOCKET_ERROR);
-#elif ZMQ_HAVE_OPENVMS
+#elif defined ZMQ_HAVE_OPENVMS
     int nonblock = 1;
     int rc = ioctl (s_, FIONBIO, &nonblock);
     errno_assert (rc != -1);
@@ -92,6 +92,8 @@ void zmq::unblock_socket (fd_t s_)
 
 void zmq::enable_ipv4_mapping (fd_t s_)
 {
+  (void) s_;
+
 #ifdef IPV6_V6ONLY
 #ifdef ZMQ_HAVE_WINDOWS
     DWORD flag = 0;
@@ -107,3 +109,4 @@ void zmq::enable_ipv4_mapping (fd_t s_)
 #endif
 #endif
 }
+

src/libzmq.pc.cmake.in

@@ -0,0 +1,10 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=@CMAKE_INSTALL_PREFIX@
+libdir=@CMAKE_INSTALL_PREFIX@/lib
+includedir=@CMAKE_INSTALL_PREFIX@/include
+
+Name: libzmq
+Description: 0MQ c++ library
+Version: @ZMQ_VERSION_MAJOR@.@ZMQ_VERSION_MINOR@.@ZMQ_VERSION_PATCH@
+Libs: -L${libdir} -lzmq
+Cflags: -I@CMAKE_INSTALL_PREFIX@/include

src/object.cpp

@@ -124,6 +124,7 @@ void zmq::object_t::process_command (command_t &cmd_)
         process_reaped ();
         break;
 
+    case command_t::done:
     default:
         zmq_assert (false);
     }

src/options.cpp

@@ -320,20 +320,23 @@ int zmq::options_t::setsockopt (int option_, const void *optval_,
             else {
                 std::string filter_str ((const char*) optval_, optvallen_);
 
-                tcp_address_mask_t filter;
-                int rc = filter.resolve (filter_str.c_str (), ipv4only ? true : false);
+                tcp_address_mask_t mask;
+                int rc = mask.resolve (filter_str.c_str (), ipv4only ? true : false);
                 if (rc != 0) {
                     errno = EINVAL;
                     return -1;
                 }
-                tcp_accept_filters.push_back(filter);
+                tcp_accept_filters.push_back(mask);
 
                 return 0;
             }
         }
+    default:
+        {
+            errno = EINVAL;
+            return -1;
+        }
     }
-    errno = EINVAL;
-    return -1;
 }
 
 int zmq::options_t::getsockopt (int option_, void *optval_, size_t *optvallen_)

src/signaler.cpp

@@ -206,8 +206,8 @@ void zmq::signaler_t::recv ()
     //  one, return it back to the eventfd object.
     if (unlikely (dummy == 2)) {
         const uint64_t inc = 1;
-        ssize_t sz = write (w, &inc, sizeof (inc));
-        errno_assert (sz == sizeof (inc));
+        ssize_t sz2 = write (w, &inc, sizeof (inc));
+        errno_assert (sz2 == sizeof (inc));
         return;
     }
 
@@ -238,8 +238,10 @@ int zmq::signaler_t::make_fdpair (fd_t *r_, fd_t *w_)
     return 0;
 
 #elif defined ZMQ_HAVE_WINDOWS
-    SECURITY_DESCRIPTOR sd = {0};
-    SECURITY_ATTRIBUTES sa = {0};
+    SECURITY_DESCRIPTOR sd;
+    SECURITY_ATTRIBUTES sa;
+    memset (&sd, 0, sizeof (sd));
+    memset (&sa, 0, sizeof (sa));
 
     InitializeSecurityDescriptor(&sd, SECURITY_DESCRIPTOR_REVISION);
     SetSecurityDescriptorDacl(&sd, TRUE, 0, FALSE);

src/socket_base.cpp

@@ -437,14 +437,14 @@ int zmq::socket_base_t::connect (const char *addr_)
 
         //  Create a bi-directional pipe to connect the peers.
         object_t *parents [2] = {this, peer.socket};
-        pipe_t *pipes [2] = {NULL, NULL};
+        pipe_t *new_pipes [2] = {NULL, NULL};
         int hwms [2] = {sndhwm, rcvhwm};
         bool delays [2] = {options.delay_on_disconnect, options.delay_on_close};
-        int rc = pipepair (parents, pipes, hwms, delays);
+        int rc = pipepair (parents, new_pipes, hwms, delays);
         errno_assert (rc == 0);
 
         //  Attach local end of the pipe to this socket object.
-        attach_pipe (pipes [0]);
+        attach_pipe (new_pipes [0]);
 
         //  If required, send the identity of the local socket to the peer.
         if (peer.options.recv_identity) {
@@ -453,9 +453,9 @@ int zmq::socket_base_t::connect (const char *addr_)
             errno_assert (rc == 0);
             memcpy (id.data (), options.identity, options.identity_size);
             id.set_flags (msg_t::identity);
-            bool written = pipes [0]->write (&id);
+            bool written = new_pipes [0]->write (&id);
             zmq_assert (written);
-            pipes [0]->flush ();
+            new_pipes [0]->flush ();
         }
 
         //  If required, send the identity of the peer to the local socket.
@@ -465,21 +465,21 @@ int zmq::socket_base_t::connect (const char *addr_)
             errno_assert (rc == 0);
             memcpy (id.data (), peer.options.identity, peer.options.identity_size);
             id.set_flags (msg_t::identity);
-            bool written = pipes [1]->write (&id);
+            bool written = new_pipes [1]->write (&id);
             zmq_assert (written);
-            pipes [1]->flush ();
+            new_pipes [1]->flush ();
         }
 
         //  Attach remote end of the pipe to the peer socket. Note that peer's
         //  seqnum was incremented in find_endpoint function. We don't need it
         //  increased here.
-        send_bind (peer.socket, pipes [1], false);
+        send_bind (peer.socket, new_pipes [1], false);
 
         // Save last endpoint URI
         options.last_endpoint.assign (addr_);
 
         // remember inproc connections for disconnect
-        inprocs.insert (inprocs_t::value_type (std::string (addr_), pipes[0]));
+        inprocs.insert (inprocs_t::value_type (std::string (addr_), new_pipes[0]));
 
         return 0;
     }
@@ -540,17 +540,17 @@ int zmq::socket_base_t::connect (const char *addr_)
     if (options.delay_attach_on_connect != 1 || icanhasall) {
         //  Create a bi-directional pipe.
         object_t *parents [2] = {this, session};
-        pipe_t *pipes [2] = {NULL, NULL};
+        pipe_t *new_pipes [2] = {NULL, NULL};
         int hwms [2] = {options.sndhwm, options.rcvhwm};
         bool delays [2] = {options.delay_on_disconnect, options.delay_on_close};
-        rc = pipepair (parents, pipes, hwms, delays);
+        rc = pipepair (parents, new_pipes, hwms, delays);
         errno_assert (rc == 0);
 
         //  Attach local end of the pipe to the socket object.
-        attach_pipe (pipes [0], icanhasall);
+        attach_pipe (new_pipes [0], icanhasall);
 
         //  Attach remote end of the pipe to the session object later on.
-        session->attach_pipe (pipes [1]);
+        session->attach_pipe (new_pipes [1]);
     }
 
     //  Save last endpoint URI
@@ -664,7 +664,7 @@ int zmq::socket_base_t::send (msg_t *msg_, int flags_)
         return -1;
 
     //  Compute the time when the timeout should occur.
-    //  If the timeout is infite, don't care. 
+    //  If the timeout is infinite, don't care.
     int timeout = options.sndtimeo;
     uint64_t end = timeout < 0 ? 0 : (clock.now_ms () + timeout);
 
@@ -746,7 +746,7 @@ int zmq::socket_base_t::recv (msg_t *msg_, int flags_)
     }
 
     //  Compute the time when the timeout should occur.
-    //  If the timeout is infite, don't care. 
+    //  If the timeout is infinite, don't care.
     int timeout = options.rcvtimeo;
     uint64_t end = timeout < 0 ? 0 : (clock.now_ms () + timeout);
 

src/stream_engine.hpp

@@ -94,7 +94,7 @@ namespace zmq
 
         //  Size of the greeting message:
         //  Preamble (10 bytes) + version (1 byte) + socket type (1 byte).
-        const static size_t greeting_size = 12;
+        static const size_t greeting_size = 12;
 
         //  True iff we are registered with an I/O poller.
         bool io_enabled;

src/tcp_listener.cpp

@@ -240,7 +240,8 @@ zmq::fd_t zmq::tcp_listener_t::accept ()
     //  Accept one connection and deal with different failure modes.
     zmq_assert (s != retired_fd);
 
-    struct sockaddr_storage ss = {};
+    struct sockaddr_storage ss;
+    memset (&ss, 0, sizeof (ss));
 #ifdef ZMQ_HAVE_HPUX
     int ss_len = sizeof (ss);
 #else

src/zmq.cpp

@@ -56,7 +56,7 @@
 
 
 // XSI vector I/O
-#if ZMQ_HAVE_UIO
+#if defined ZMQ_HAVE_UIO
 #include <sys/uio.h>
 #else
 struct iovec {
@@ -980,7 +980,7 @@ int zmq_proxy (void *frontend_, void *backend_, void *control_)
 
 //  The deprecated device functionality
 
-int zmq_device (int type, void *frontend_, void *backend_)
+int zmq_device (int /* type */, void *frontend_, void *backend_)
 {
     return zmq::proxy (
         (zmq::socket_base_t*) frontend_,
@@ -989,7 +989,7 @@ int zmq_device (int type, void *frontend_, void *backend_)
 
 //  Callback to free socket event data
 
-void zmq_free_event (void *event_data, void *hint)
+void zmq_free_event (void *event_data, void * /* hint */)
 {
     zmq_event_t *event = (zmq_event_t *) event_data;