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Date:	Sat, 8 Jan 2022 15:34:54 +0900 (JST)
From:	Tatsuro MATSUOKA <tmacchant2 AT yahoo DOT co DOT jp>
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
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Subject:	Re: [ANNOUNCEMENT] Updated: gnuplot-5.4.3-1
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Reply-To:	Tatsuro MATSUOKA <matsuoka AT nuce DOT nagoya-u DOT ac DOT jp>
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> ----- Original Message -----
> Gnuplot version 5.4.3 is now available on Cygwin.  The upstream release
> notes for this bugfix / minor feature enhancement release are available
> at:
> 
> http://www.gnuplot.info/ReleaseNotes_5_4_3.html
> 
> 
> Cygwin Notes
> ============
> 
> The tutorial has been removed from the 5.4 branch of gnuplot, so it is
> no longer available in the package.
> 
> The ggi terminal has been dropped from the build.  I am considering
> dropping both the gpic and the mif terminal in a further update as well.
> 
> The wxt terminal is now available.
> 
> The qt terminal still doesn't work on Cygwin due to either a Cygwin or
> Qt5 bug that is still under investigation.  If you want to help, please
> install the gnuplot-qt5 package and try to debug it.
> 
Attach the below patch to the qt-5.9.4

--- a/qtbase-everywhere-src-5.10.1/src/network/socket/qlocalsocket_unix.cpp
+++ b/qtbase-everywhere-src-5.10.1/src/network/socket/qlocalsocket_unix.cpp
@@ -239,7 +239,7 @@ void QLocalSocket::connectToServer(OpenM
     }

     // create the socket
-    if (-1 == (d->connectingSocket = qt_safe_socket(PF_UNIX, SOCK_STREAM, 0, 
O_NONBLOCK))) {
+    if (-1 == (d->connectingSocket = qt_safe_socket(PF_UNIX, SOCK_STREAM, 
0))) {
         d->errorOccurred(UnsupportedSocketOperationError,
                        
QLatin1String("QLocalSocket::connectToServer"));
         return;



I generaged renamed cygQt5Network-5.dll as cygQt5Network-5-gnuplot.dll and linked against it.
(Downgrade gcc-11 to gcc-10 is required for qt-5.9.4 build
https://cygwin.com/pipermail/cygwin/2021-December/250235.html)

The qt terminal works.

   error messages are shown in interactive session. 
   For example,
     terminal type is now 'qt'
     gnuplot> pl x
     QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-user'
     libGL error: Windows-DRI extension not available
     libGL error: No matching fbConfigs or visuals found
     libGL error: failed to load driver: swrast
     gnuplot> QXcbShmImage: shmget() failed (88: Function not implemented) for size 1394424 (642x543)
   For QStandardPaths error, the message is supressed if the environmental variable XDG_RUNTIME_DIR to
   /tmp/runtime-user like 
     export XDG_RUNTIME_DIR=/tmp/runtime-user
   For libGL errors, the messages are supressed if the environmental variable LIBGL_ALWAYS_INDIRECT to 1 like
     export LIBGL_ALWAYS_INDIRECT=1
   For QXcbShmImage: shmget() failed, the message is surpressed if cygserver service is running.
   Right click terminal launcher and run as administrator and execute below
      $ cygserver-config
      /etc/cygserver.conf
      is produced and then execute
      $ cygrunsrv -S cygserver
      Then cygserver service is registered to registry.
      https://superuser.com/questions/738105/how-to-install-cygserver

Tatsuro


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