[gstreamer-bugs] [Bug 541358] New: cross mingw32 gcc: getaddrinfo is not in ws2_32.dll before Windows XP

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS
           Summary: cross mingw32 gcc: getaddrinfo is not in ws2_32.dll
                    before Windows XP
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Windows
            Status: UNCONFIRMED
          Severity: minor
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: damien.lespiau at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


libgstsdp uses getaddrinfo and freeaddrinfo functions. These functions are not
in the winsocks DLL before windows XP. mingw32 knows this and its ws2tcpip.h
does not declare them unless the WINVER macro is set to Windows XP or above.

Thus, when trying to cross-compile with mingw32 from a linux box, the build
stop with:

../../../../gst-plugins-base-0.10.20/gst-libs/gst/sdp/gstsdpmessage.c: In
function `is_multicast_address':
../../../../gst-plugins-base-0.10.20/gst-libs/gst/sdp/gstsdpmessage.c:334:
warning: implicit declaration of function `getaddrinfo'
../../../../gst-plugins-base-0.10.20/gst-libs/gst/sdp/gstsdpmessage.c:350:
warning: implicit declaration of function `freeaddrinfo'

and at link time:

/home/damien/src/build-gst-plugins-base-0.10.20/gst-libs/gst/sdp/../../../../gst-plugins-base-0.10.20/gst-libs/gst/sdp/gstsdpmessage.c:334:
undefined reference to `_getaddrinfo'
/home/damien/src/build-gst-plugins-base-0.10.20/gst-libs/gst/sdp/../../../../gst-plugins-base-0.10.20/gst-libs/gst/sdp/gstsdpmessage.c:350:
undefined reference to `_freeaddrinfo'

The right thing to do would be to provide a replacement for those functions to
support systems like windows 2000 (and maybe some Unixes) but for now I have a
patch to fix the build issue knowing that the DLL won't work with windows 2000
or earlier. This patch should not break anything and makes -base compile with
mingw32 so it still can be useful while waiting for someone that needs to have
gstreamer SDP working for windows 2000.


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