[Solved] build error QT 5.02 gui application

esers

I have libGL.so.1 in /usr/lib/x86_64-linux-gnu/mesa. It is symbolic link to libGL.so.1.2 in the same folder. There is also ld.so.conf in the same folder. But it seams that qt don't see them.
I try to

add INCLUDEPATH += /usr/lib/x86_64-linux-gnu/mesa
add LIBS += -L/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1
to .pro file of my app. One item at a time.
That does not fix the problem. I have the same error.

How can I exclude directive -lGL from qmake command or add the path to /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1?

SGaist

Hi,

The correct way to add a library path is:
@LIBS += -L/usr/lib/x86_64-linux-gnu/mesa/@

By the way, what system are you on ? That seems an unusual folder for mesa to installed

esers

Hi SGaist,
your recomendation does not help.
I have got the same error.

esers

I have ubuntu 12.05 64-bit on Virtual box on Windows 7
I have QT 5.02 and Boot to QT(evaluation) for QT5 installed.

SGaist

How did you instal mesa ?

esers

Hi SGaist,

I install it during Boot to Qt intsaltion.
http://dist.qt.digia.com/developer/download/BootToQt-installation-guide.html
1.Installing 32-bit support libraries
sudo apt-get install g++-multilib ia32-libs

There were no dependent libraries for isa32-libs. So first install libraries from which isa32-lib is dependent. During this installation I install mesa I think.

esers

Projects in Boot to Qt Creator are building without errors. But there are no examples in Boot to Qt. So I install Qt 5.02 to get the examples.

esers

I have solved the problem.

I delete "-lGL" in file
/home/sergey/Qt5.0.2/5.0.2/gcc_64/mkspecs/common
Before fix:
QMAKE_LIBS_OPENGL = -lGL
after fix:
QMAKE_LIBS_OPENGL =

In my example program I don' use opengl

esers

The file name is:
/home/sergey/Qt5.0.2/5.0.2/gcc_64/mkspecs/common/linux.conf

esers

The previous decision was only a patch.

The real fix is to install packages:
mesa-common-dev
libgl1-mesa-dev
libglu1-mesa-dev

for ubuntu 12.04

I was shure that I have installed those packages, but it was not so.

esers

File /home/sergey/Qt5.0.2/5.0.2/gcc_64/mkspecs/common/linux.conf
must be restored to it's original state

metoinside

It has been almost a year an your suggestion about installing:
@mesa-common-dev
libgl1-mesa-dev
libglu1-mesa-dev@
works!
After installation my issue of: "error: cannot find -lGL" resolved
Thanks esers!