Qvfb build problem... from a newbie

richard.davies

Hi All,

I'm new to QT and I and try to setup a development environment for developing for an embedded platform. Firstly though I want to setup my system for using the Virtual Framebuffer, qvfb.

My system is Ubuntu 11.10 64bit build.

I have downloaded SDK 4.8.0 and first have built for my x11 platform, as suggested on the installation instructions...
./configure
make
sudo make install
PATH=/usr/local/Trolltech/Qt-4.8.0/bin;$PATH

I've then performed the following to try and build the QVFB version
make confclean
./configure -qvfb
make

all seems well at this point.....
Now I move into tools/qvfb and try and make the qvfb application and it fails!
Snapshot below
g++ -c -m64 -pipe -O2 -I/usr/include/freetype2 -Wall -W -D_REENTRANT -DQT_NO_QWS_SIGNALHANDLER -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_HAVE_SSE3 -DQT_HAVE_SSSE3 -DQT_HAVE_SSE4_1 -DQT_HAVE_SSE4_2 -DQT_HAVE_AVX -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_SHARED -I../../mkspecs/linux-g++-64 -I. -I../../include/QtCore -I../../include/QtGui -I../../include -I../../src/gui/embedded -I../shared/deviceskin -I../../src/3rdparty/libpng -I/usr/X11R6/include -I.uic/release-shared -I.moc/release-shared -o .obj/release-shared/qanimationwriter.o qanimationwriter.cpp
qanimationwriter.cpp:73:5: error: ‘png_structp’ does not name a type
qanimationwriter.cpp:74:5: error: ‘png_infop’ does not name a type
qanimationwriter.cpp:106:24: error: ‘png_structp’ has not been declared
qanimationwriter.cpp:106:45: error: ‘png_bytep’ has not been declared
qanimationwriter.cpp:106:61: error: ‘png_size_t’ has not been declared
qanimationwriter.cpp: In member function ‘void QAnimationWriterMNG::begin_png()’:
qanimationwriter.cpp:95:9: error: ‘png_ptr’ was not declared in this scope
qanimationwriter.cpp:95:43: error: ‘PNG_LIBPNG_VER_STRING’ was not declared in this scope

Any ideas what I am doing wrong!

Thanks in advance!!!!

iw2lsi

Hi

in order to build qvfb, just configure, compile and install qt for X11 as usually

then update your PATH variable, cd to tools/qvfb under the same qt sources and run

qmake;
make;

thanks all...

      Giampaolo

richard.davies

Hi Giampaolo,

Yeah, that's exactly what I did but get the build problem with libpng? I've tried on three machines with the same results...
Not sure what I'm missing?

Thanks

Richard

iw2lsi

Hello Richard...

can you report the error ?
maybe you are just missing the development version of the package

        Giampaolo

richard.davies

Hi Giampaolo,

Sorry for the stupid question.. but how do I report this problem :-)

Richard

iw2lsi

Hi Richard

why not just copy-and-paste the build error here ?

am I missing something ?

  Giampaolo

richard.davies

Giampaolo,

I see... yes the build error was in the first posting... I'll cut and paste again....

g++ -c -m64 -pipe -O2 -I/usr/include/freetype2 -Wall -W -D_REENTRANT -DQT_NO_QWS_SIGNALHANDLER -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_HAVE_SSE3 -DQT_HAVE_SSSE3 -DQT_HAVE_SSE4_1 -DQT_HAVE_SSE4_2 -DQT_HAVE_AVX -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_SHARED -I../../mkspecs/linux-g++-64 -I. -I../../include/QtCore -I../../include/QtGui -I../../include -I../../src/gui/embedded -I../shared/deviceskin -I../../src/3rdparty/libpng -I/usr/X11R6/include -I.uic/release-shared -I.moc/release-shared -o .obj/release-shared/qanimationwriter.o qanimationwriter.cpp
qanimationwriter.cpp:73:5: error: ‘png_structp’ does not name a type
qanimationwriter.cpp:74:5: error: ‘png_infop’ does not name a type
qanimationwriter.cpp:106:24: error: ‘png_structp’ has not been declared
qanimationwriter.cpp:106:45: error: ‘png_bytep’ has not been declared
qanimationwriter.cpp:106:61: error: ‘png_size_t’ has not been declared
qanimationwriter.cpp: In member function ‘void QAnimationWriterMNG::begin_png()’:
qanimationwriter.cpp:95:9: error: ‘png_ptr’ was not declared in this scope
qanimationwriter.cpp:95:43: error: ‘PNG_LIBPNG_VER_STRING’ was not declared in this scope

Cheers

Richard

iw2lsi

Oh! sorry!

as I remember I had succesfully compiled the qvfb in the past years, I'm going to try again...

actually with qt-4.8.0 and qt-4.8.1 I have another error:

x11keyfaker.cpp:48: fatal error: X11/extensions/XTest.h: File o directory non esistente

I'll try again asap on another (older) machine

        Giampaolo

iw2lsi

Hello Richard

after resolving the libxtst dependency (apt-get install libxtst-dev), I succesfully compiled qvfb on qt 4.7.4

on the same machine, with 4.8.0 and 4.8.1 I have another problem:

.obj/release-shared/qlock.o: In function QLock::isValid() const': qlock.cpp:(.text+0x0): multiple definition of QLock::isValid() const'
...

my libpng is libpng12-dev (1.2.44-1ubuntu0.3), distro is KUbuntu 10.10

Best Regards

         Giampaolo

richard.davies

Hi Giampaolo,

Can you send me the ./configure parameters you use to build 4.8.0 QVFB?

Yeah I also saw this, it's because qlock. references in the make file are include twice???? This seems very strange? Is 4.8.x an officially tested release..

Richard

iw2lsi

Hello Richard

yes... it's strange...

on X11 normally I pass no switch to configure... I just gave a

./configure; make; make install

I wonder also why qvfb is not built automatically with other tools...

      Giampaolo