Linux now supports Virtual Routing and Forwarding (VRF) as per:
https://www.kernel.org/doc/Documentation/networking/vrf.txt
In order for an application to bind or connect to a socket with an
address in a VRF, they need to first bind the socket to the VRF device:
setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, dev, strlen(dev)+1);
Note "dev" is the VRF device, eg. VRF "blue", rather than an interface
enslaved to the VRF.
Add a new socket option, ZMQ_BINDTODEVICE, to bind a socket to a device.
In general, if a socket is bound to a device, eg. an interface, only
packets received from that particular device are processed by the socket.
If device is a VRF device, then subsequent binds/connects to that socket
use addresses in the VRF routing table.
Solution: we can use 'CMAKE_SYSTEM_VERSION' instead of
'${CMAKE_SYSTEM_VERSION}' for the 'if' clauses.
CMake fails to evaluate condition when CMAKE_SYSTEM_VERSION is
empty, which can happen with a default installation of Mingw-w64
in Linux.
Some #define switches cause the body of entire files to be omitted. This
causes a linker warning on Visual Studio 2017, for example
warning LNK4221: This object file does not define any previously
undefined public symbols, so it will not be used by any link
operation that consumes this library
Since this is warning us about something that shouldn't be
earth-shattering news, we add a linker flag to suppress this warning on
MSVC builds.
Add two new options to CMakeLists.txt:
`BUILD_SHARED` - Whether or not to build the shared object (Default: ON)
`BUILD_STATIC` - Whether or not to build the static archive (Default: ON)
Remove the `build/msvc` include path from the test project to fix a
problem with the order of the include paths. Additionally remove the
unnecessary `include_directories` from the master project.
Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
* add define for windows/UWP
* prevent issue with COM references
* gettickcount not available on uwp
* add compiler definitions
* add convenitnece cmake file
* brute force uwp compilation
* fix compiler version
* cosmetics
Solution: use pthread API to set the name. For now call every thread
"ZMQ b/g thread". Would be nice to number the I/O threads and name
explicitly the reaper thread, but in reality a bit of internal API
churn would be necessary, so perhaps it's not worth it.
This is useful when debugging a process with many threads.
Solution: set SOVERSION in CMakeLists to match the SONAME generated
by libtool so that there is no mismatch between the output of the
*NIX build systems.
Before:
$ ls -l
total 2696
lrwxrwxrwx 1 luca luca 15 Dec 1 22:36 libzmq.so -> libzmq.so.4.2.0
lrwxrwxrwx 1 luca luca 15 Dec 1 22:36 libzmq.so.4.2.0 -> libzmq.so.4.2.1
-rwxr-xr-x 1 luca luca 906168 Dec 1 22:36 libzmq.so.4.2.1
$ readelf -d libzmq.so.4.2.1 | grep SONAME
0x000000000000000e (SONAME) Library soname: [libzmq.so.4.2.0]
After:
$ ls -l
total 2700
lrwxrwxrwx 1 luca luca 15 Dec 1 22:31 libzmq.so -> libzmq.so.5.1.0
-rwxr-xr-x 1 luca luca 906168 Dec 1 22:31 libzmq.so.4.2.1
lrwxrwxrwx 1 luca luca 15 Dec 1 22:31 libzmq.so.5.1.0 -> libzmq.so.4.2.1
$ readelf -d libzmq.so.4.2.1 | grep SONAME
0x000000000000000e (SONAME) Library soname: [libzmq.so.5.1.0]
Solution: use only Libs.private to avoid breaking application builds.
Even though Requires.private are supposed to be parsed only if
pkg-config is called with --static, the --cflags parameter is enough
to trigger the parsing, causing build failures for applications that
do not (and should not) depend on libzmq's dependencies.
Solution: add dependencies, if necessary, to the .private Libs and
Requires field of the pkgconfig file at build time.
This way pkg-config --static --libs libzmq will correctly print
dependencies if they were used to build the static libzmq.a library.
Solution:
Add CMake option called WITH_MILITANT so that it aligns with the Autotools
build infrastructure; enabling this option defines ZMQ_ACT_MILITANT, which
enables assertions should malformed requests make their way into
zmq_setsockopt(3) or zmq_getsockopt(3).
