Installation warnings on OSX

[pronebird]

Hey, that's what I get during installation of zmq. Seems like some of scripts are old.

➜ zeromq-node npm install zmq --save

zmq@2.15.3 install /Users/pronebird/Downloads/zeromq-node/node_modules/zmq
node-gyp rebuild

CXX(target) Release/obj.target/zmq/binding.o
In file included from ../binding.cc:29:
/usr/local/Cellar/zeromq/4.2.0/include/zmq_utils.h:40:32: warning: unknown warning group '-Wcpp', ignored [-Wunknown-pragmas]
#pragma GCC diagnostic warning "-Wcpp"
^
/usr/local/Cellar/zeromq/4.2.0/include/zmq_utils.h:41:32: warning: unknown warning group '-Werror', ignored [-Wunknown-pragmas]
#pragma GCC diagnostic ignored "-Werror"
^
/usr/local/Cellar/zeromq/4.2.0/include/zmq_utils.h:44:9: warning: Warning: zmq_utils.h is deprecated. All its functionality is provided by zmq.h. [-W#pragma-messages]
#pragma message("Warning: zmq_utils.h is deprecated. All its functionality is provided by zmq.h.")
^
3 warnings generated.
SOLINK_MODULE(target) Release/zmq.node
clang: warning: libstdc++ is deprecated; move to libc++ with a minimum deployment target of OS X 10.9
ld: warning: directory not found for option '-L/opt/local/lib'

[haysclark]

I'm not a C++ guru, but all 3 of these warning stem from zmq_utils.h being included here in bind.cc. It looks like this deprecation warning was added in version 4.2.0 of libzmq: commit.

I am not sure if it's possible to do any pre-processor magic in bind.cc to only include zmq_utils.h if the version of libzmq is 4.2.0 or greater. ¯\(ツ)/¯

[pronebird]

@haysclark thanks for investigating this!

zmq_utils.h functionality has been moved to zmq.h since 4.2.0, therefore zmq_utils.h has to be included only when building against zmq < 4.2.0

Something like that should work:

// zmq 4.2.0 deprecates the use of zmq_utils.h
#if ZMQ_VERSION < ZMQ_MAKE_VERSION(4,2,0)
#include <zmq_utils.h>
#endif

[PuzoLiang]

@haysclark thanks for investigating this!

zmq_utils.h functionality has been moved to zmq.h since 4.2.0, therefore zmq_utils.h has to be included only when building against zmq < 4.2.0

Something like that should work:

// zmq 4.2.0 deprecates the use of zmq_utils.h
#if ZMQ_VERSION < ZMQ_MAKE_VERSION(4,2,0)
#include <zmq_utils.h>
#endif

which file fill content like you last lines of comments? I add your tips codes to zmq.h and zmq_util.h repectly respectively, but it doesn't work.