Ron Johnson wrote:
On 10/06/08 10:48, Hugo Vanwoerkom wrote:
Ron Johnson wrote:
On 10/06/08 09:39, Hugo Vanwoerkom wrote:
Hi,
I am trying to compile *on my own* some sample code that comes with
nvidia-settings and I get errors:
do-nvctrl.cpp:(.text+0x1f): undefined reference to
`XextFindDisplay(_XExtensionInfo*, _XDisplay*)'
but I have Xext referenced:
g++ -o do-nv-control-dvc do-nv-control-dvc.o do-nvctrl.o
-L/usr/lib -L lib-nv -L /usr/X11R6/lib -lXNVCtrl -lqt-mt -lXext
-lX11 -lm -lXxf86vm -lQtGui -lQtCore -lpthread
So where does that entry reside?
Anybody?
Google is your friend!
http://www.google.com/search?q=XextFindDisplay
The first result from this query shows that it's in libXext, package
libxext-dev.
Right. I saw that. And libxext-dev is installed and so is libxext6.
Then why does
g++ -o do-nv-control-dvc do-nv-control-dvc.o do-nvctrl.o
-L/usr/lib -L lib-nv -L /usr/X11R6/lib -lXNVCtrl -lqt-mt -lXext -lX11
-lm -lXxf86vm -lQtGui -lQtCore -lpthread
still give me an undefined reference to XextFindDisplay if I have both
libraries installed?
Hmmm. "$ dpkg -L libxext-dev" seems joyless, also, as is
http://packages.debian.org/search.
I figured it out but don't know the solution:
The errors refer to the parameters used for XextFindDisplay, not
XextFindDisplay itself, because I am using g++.
When I do this:
cc -Wall -I include-nv/ -I /usr/X11R6/include/ do-nv-control-dvc.c -o
do-nv-control-dvc -L lib-nv/ -L /usr/X11R6/lib -lXNVCtrl -lXext -lX11
I get no errors. But when I change the 'cc' to 'g++' I get the errors.
The reason I use g++ is because I want to use Qt classes.
Hugo
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