Facing problem while compiling 1st code

[eppy]

[I got following error while compiling 1st code in qt. I m very new qt.
[code]
08:19:09: Running steps for project test...
08:19:09: Configuration unchanged, skipping qmake step.
08:19:09: Starting: "/usr/bin/make"
g++ -m32 -Wl,-rpath,/home/saag/Qt5.5.0/5.5/gcc -Wl,-rpath,/home/saag/Qt5.5.0/5.5/gcc/lib -o test main.o mainwindow.o moc_mainwindow.o -L/home/saag/Qt5.5.0/5.5/gcc/lib -lQt5Widgets -lQt5Gui -lQt5Core -lGL -lpthread
/usr/bin/ld: cannot find -lGL
collect2: error: ld returned 1 exit status
make: *** [test] Error 1
08:19:10: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project test (kit: Desktop Qt 5.5.0 GCC 32bit)
When executing step "Make"
08:19:10: Elapsed time: 00:01.
[/code]

I m using ubuntu 14.04. I have attached qt version screen shot(bcoz there two versions has been mentioned.)

I have attched project too.
Plz help with this.

[mrjj]

Hi
is it a opengl program ?
did you install the opengl
http://askubuntu.com/questions/306703/compile-opengl-program-missing-gl-gl-h
maybe
sudo apt-get install libgl1-mesa-dev

does a normal project work?

[eppy]

@mrjj said:

sudo apt-get install libgl1-mesa-dev

Thanks this command works.
BTW, which library is this.

[mrjj]

@eppy
its opengl library.