126999d depends: fix zmq build with mingw < 4.0 (Cory Fields)
387879d [depends] ZeroMQ 4.2.2 (fanquake)
Pull request description:
Update depends ZeroMQ to 4.2.2, the release notes are available [here](https://github.com/zeromq/libzmq/releases).
We can drop both patches, as they have both been merged upstream (they actually had been for some time but just hadn't yet made it into a release).
`--without-documentation` is deprecated and has been replaced with `--without-docs`.
`--disable-perf` disables building performance measuring tools, which are enabled by default, see the libzmq [configure.ac](https://github.com/zeromq/libzmq/blob/master/configure.ac#L367).
Updated dependencies.md.
`--disable-curve-keygen` disable building the curve key generation tool. See [here](https://github.com/zeromq/libzmq/blob/master/configure.ac#L405).
Can someone on windows test that this is still working correctly. Maybe @achow101 ?
Tree-SHA512: c6c4b15f545b6de21648f05027b5500fca0e6b5b72e791ac9a0aa523c57f2feb5aae94e42531275dddd922e11e462a52f08be1118ba1629c3cae765b18e5d720
* build: Enable C++11 build, require C++11 compiler
Implements #6211.
* depends: use c++11
* build: update ax_cxx_compile_stdcxx to serial 4
* build: force a c++ standard to be specified
Newer compilers may switch to newer standards by default. For example, gcc6
uses std=gnu++14 by default.
* c++11: fix libbdb build against libc++ in c++11 mode
atomic_init clashes with
* c++11: CAccountingEntry must be defined before use in a list
c++11ism. This fixes builds against libc++.
