Date: Tue, 11 Sep 2001 12:37:23 -0700 (PDT) From: Jonathan Belson <jon@witchspace.com> To: freebsd-gnats-submit@FreeBSD.org Subject: ports/30511: Problem getting opengl/mesa to work with latest port of qt Message-ID: <200109111937.f8BJbNF25070@freefall.freebsd.org>
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>Number: 30511
>Category: ports
>Synopsis: Problem getting opengl/mesa to work with latest port of qt
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-ports
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Sep 11 12:40:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: Jonathan Belson
>Release: freebsd-stable
>Organization:
>Environment:
FreeBSD lexx.local 4.3-STABLE FreeBSD 4.3-STABLE #0: Mon Aug 27 18:27:48 BST 2001 jon@lexx.local:/usr/src/sys/compile/LEXX i386
>Description:
I'm having problems trying to get opengl to work with the latest
version of qt. It's my understanding that I have to link against
libqtgl for qt with opengl support:
#include <qapplication.h>
#include <qgl.h>
int main(int argc, char** argv)
{
QApplication app(argc, argv);
QGLWidget* w = new QGLWidget(0, "a widget");
delete w;
return 0;
}
I compile it with :
gcc -o prog prog.cc -I/usr/X11R6/include/qt2/ -I/usr/X11R6/include/
-L/usr/X11R6/lib/ -L/usr/local/lib -lqtgl -lpthread
It links fine, but when I try to run it I get the error:
/usr/libexec/ld-elf.so.1: ./prog: Undefined symbol
"__9QGLWidgetP7QWidgetPCcPC9QGLWidgetUi"
ldd ./prog gives:
libqt2.so.4 => /usr/X11R6/lib/libqt2.so.4 (0x1806d000)
libpthread.so.14 => /usr/local/lib/libpthread.so.14 (0x18512000)
libc.so.4 => /usr/lib/libc.so.4 (0x1852a000)
libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x185c2000)
libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x185d0000)
libSM.so.6 => /usr/X11R6/lib/libSM.so.6 (0x186ab000)
libICE.so.6 => /usr/X11R6/lib/libICE.so.6 (0x186b4000)
libXft.so.1 => /usr/X11R6/lib/libXft.so.1 (0x186ca000)
libpng.so.4 => /usr/local/lib/libpng.so.4 (0x186f4000)
libz.so.2 => /usr/lib/libz.so.2 (0x18713000)
libjpeg.so.9 => /usr/local/lib/libjpeg.so.9 (0x18720000)
libmng.so.1 => /usr/local/lib/libmng.so.1 (0x1873e000)
libstdc++.so.3 => /usr/lib/libstdc++.so.3 (0x18770000)
libm.so.2 => /usr/lib/libm.so.2 (0x187b5000)
libXThrStub.so.6 => /usr/X11R6/lib/libXThrStub.so.6 (0x187d0000)
libXrender.so.1 => /usr/X11R6/lib/libXrender.so.1 (0x187d2000)
libfreetype.so.7 => /usr/local/lib/libfreetype.so.7 (0x187d7000)
liblcms.so.1 => /usr/local/lib/liblcms.so.1 (0x1880e000)
I was slightly concerned that the first line shows libqt2 rather than
libqtgl; should this be the case?
/usr/X11R6/lib# ll | grep qt
lrwxr-xr-x 1 root wheel 29 Sep 6 18:50 libqt2-mt.so ->
/usr/X11R6/lib/libqt2-mt.so.4
-r-xr-xr-x 1 root wheel 4884936 Sep 6 18:50 libqt2-mt.so.4
lrwxr-xr-x 1 root wheel 26 Sep 6 18:50 libqt2.so ->
/usr/X11R6/lib/libqt2.so.4
-r-xr-xr-x 1 root wheel 4869448 Sep 6 18:50 libqt2.so.4
lrwxr-xr-x 1 root wheel 27 Sep 6 18:50 libqtgl.so ->
/usr/X11R6/lib/libqtgl.so.4
-r-xr-xr-x 1 root wheel 4899888 Sep 6 18:50 libqtgl.so.4
When I reinstall the previous version (qt-2.3.0) the code links and runs
as expected.
I'm running FreeBSD stable, with qt-2.3.1 built from the port.
Thanks!
>How-To-Repeat:
See 'full description' for code example.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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