Getting Qt4 to work on FreeBSD

[enpey]

I have installed devel/qt4 and am trying to compile the simple "Hello Qt!" beginner.I have installed all from ports, but cannot find anything in relation to installation other than I need to set a few environment variables...

If I leave QTDIR empty, when running '$ qmake hello.pro' I now do not receive a long line of QFile:pen: errors. In my Makefile I have set absolute paths for MOC and UIC (/usr/local/bin/moc-qt4 or uic-qt4) and I am now receiving this error:

$ make
c++ -c -pipe -Wall -W -O2 -fno-strict-aliasing -pipe -DQT_NO_DEBUG -DQT_THREAD_SUPPORT -I/usr/local/share/qt/mkspecs/freebsd-g++ -I. -I. -I../../../../../local/include -I/include -o moc_qapplication.o ../../../../../local/include/Qt/moc_qapplication.cpp
../../../../../local/include/Qt/moc_qapplication.cpp: In member function 'virtual int QApplication::qt_metacall(QMetaObject::Call, int, void**)':
../../../../../local/include/Qt/moc_qapplication.cpp:106: error: invalid use of incomplete type 'struct QApplicationPrivate'
../../../../../local/include/QtCore/qobject.h:285: error: forward declaration of 'struct QApplicationPrivate'
../../../../../local/include/Qt/moc_qapplication.cpp:115: error: invalid use of incomplete type 'struct QIcon'
../../../../../local/include/Qt/qapplication.h:72: error: forward declaration of 'struct QIcon'
*** Error code 1

Stop in /usr/home/np/docs/.code/hello.

I found this http://lists.trolltech.com/qt-jambi...ead00008-0.html but I am unsure of its relevance as I have not installed qt3 (Except for package dependencies such as linux-opera). Could qt3 library interference be affecting my results?

If I '$ export QTDIR=/usr/local/share/qt4; qmake hello.pro' I get a long long list of QFile:pen errors followed by some other errors, but still end up with a Makefile. It still gives me the same errors as outlined above.

With QTDIR set, and running 'qmake hello.pro' these are the errors I get:

QFile::open: No file name specified
.
.
.
QFile::open: No file name specified
QFile::open: No file name specified
qt_config.prf:8: Unknown test function: debug
qt_functions.prf:1: Unknown test function: defineReplace
qt_functions.prf:18: Unknown test function: defineTest
QFile::open: No file name specified
QFile::open: No file name specified
qt_config.prf:8: Unknown test function: debug
qt_functions.prf:1: Unknown test function: defineReplace
qt_functions.prf:18: Unknown test function: defineTest
.
.
.
$

Anyone have any ideas on what I might be able to do to get it working?

Thanks, enpey

[hydra]

Hi,
I've just installed the devel/qt4 package. Then I downloaded the first sample program (http://doc.trolltech.com/4.3/tutorial-t1.html) into a directory.

What needs to be done next (assuming tcsh for setting the QMAKESPEC, use export when using bash):

setenv QMAKESPEC freebsd-g++
qmake-qt4 -project
qmake-qt4
make

Hope it works for you.

[enpey]

Hey,

I am using zsh and I have checked to ensure that export is working. I downloaded the file you are using and that did not work either - giving me:

Script started on Tue May 6 07:19:39 2008
$ ls
log.txt main.cpp
$ qmake-qt4 -project
$ ls
hell.pro log.txt main.cpp
$ qmake-qt4
$ ls
Makefile hell.pro log.txt main.cpp
$ make
c++ -c -pipe -O2 -fno-strict-aliasing -pipe -Wall -W -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/share/qt4/mkspecs/freebsd-g++ -I. -I/usr/local/include/QtCore -I/usr/local/include/QtCore -I/usr/local/include/QtGui -I/usr/local/include/QtGui -I/usr/local/include -I. -I. -I. -I/usr/local/include -o main.o main.cpp
main.cpp:1: error: expected constructor, destructor, or type conversion before 'file'
In file included from /usr/include/sys/_types.h:33,
from /usr/include/stddef.h:43,
from /usr/local/include/QtCore/qglobal.h:47,
from /usr/local/include/QtCore/qnamespace.h:47,
from /usr/local/include/QtCore/qobjectdefs.h:47,
from /usr/local/include/QtCore/qobject.h:49,
from /usr/local/include/QtCore/qcoreapplication.h:47,
from /usr/local/include/QtGui/qapplication.h:47,
from /usr/local/include/QtGui/QApplication:1,
from main.cpp:6:
/usr/include/machine/_types.h:75: error: '__int8_t' does not name a type
In file included from /usr/include/unistd.h:41,
from /usr/include/c++/4.2/bits/gthr-default.h:44,
from /usr/include/c++/4.2/bits/gthr.h:114,
from /usr/include/c++/4.2/bits/c++io.h:43,
from /usr/include/c++/4.2/iosfwd:46,
from /usr/include/c++/4.2/bits/stl_algobase.h:70,
from /usr/include/c++/4.2/bits/char_traits.h:46,
from /usr/include/c++/4.2/string:47,
from /usr/local/include/QtCore/qstring.h:62,
from /usr/local/include/QtCore/qobject.h:50,
from /usr/local/include/QtCore/qcoreapplication.h:47,
from /usr/local/include/QtGui/qapplication.h:47,
from /usr/local/include/QtGui/QApplication:1,
from main.cpp:6:
/usr/include/sys/types.h:64: error: '__int8_t' does not name a type
In file included from /usr/include/c++/4.2/bits/postypes.h:49,
from /usr/include/c++/4.2/iosfwd:49,
from /usr/include/c++/4.2/bits/stl_algobase.h:70,
from /usr/include/c++/4.2/bits/char_traits.h:46,
from /usr/include/c++/4.2/string:47,
from /usr/local/include/QtCore/qstring.h:62,
from /usr/local/include/QtCore/qobject.h:50,
from /usr/local/include/QtCore/qcoreapplication.h:47,
from /usr/local/include/QtGui/qapplication.h:47,
from /usr/local/include/QtGui/QApplication:1,
from main.cpp:6:
/usr/include/stdint.h:77: error: '__int_least8_t' does not name a type
*** Error code 1

Stop in /usr/home/np/docs/.code/hell.

I am currently cvsupping the latest source...

For the application I was trying to build (Found in the book 'C++ GUI Programming with Qt4'), using qmake-qt4 instead of qmake means I don't have to adjust the Makefile to point to moc and uic correctly, but it still gives me the same error about incomplete types in the end.

I will finish updating and see if that has any effect.

Thanks, enpey

[enpey]

I just rebuilt and installed the kernel and world but still get the same error...
Any ideas as to why or what I can do to fix this?

[TerryP]

To me, that output looks kind of strange because the headers in /usr/include/ should be the systems headers, C++ ones going in /usr/include/c++/n.m/ and generally work.


========
My system has both Qt 3.3.8 and Qt 4.3.1 installed and could compile and run the same test app fine with GNU Make and the systems compiler.

Terry@dixie$ vim main.cpp                                                  2:59
Terry@dixie$ qmake-qt4 -project                                            2:59
Terry@dixie$ qmake-qt4                                                     2:59
Terry@dixie$ ls                                                            2:59
Makefile            main.cpp            qt4-helloworld.pro
Terry@dixie$ gmake                                                         2:59
c++ -c -pipe -O2 -fno-strict-aliasing -pipe -Wall -W -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/share/qt4/mkspecs/freebsd-g++ -I. -I/usr/local/include/QtCore -I/usr/local/include/QtCore -I/usr/local/include/QtGui -I/usr/local/include/QtGui -I/usr/local/include -I. -I. -I. -I/usr/local/include -o main.o main.cpp
c++ -pthread -o qt4-helloworld main.o    -L/usr/local/lib -lQtGui -L/usr/local/lib -lpng -lSM -lICE -pthread -pthread -lXi -lXrender -lXrandr -lXfixes -lXcursor -lXinerama -lfreetype -lfontconfig -lXext -lX11 -lQtCore -lz -lm -pthread -lgthread-2.0 -lglib-2.0 -liconv
Terry@dixie$ ls                                                            3:00
Makefile            main.o              qt4-helloworld.pro
main.cpp            qt4-helloworld*
Terry@dixie$ ./qt4-helloworld                                              3:00
Terry@dixie$                                                               3:00

Note that my ~/.shrc.local (which is sourced by my ~/.zshrc) sets the variables needed:

 # QT: needed in order to compile QT programs...
 export QMAKESPEC='freebsd-g++'
 export QTDIR='/usr/X11R6/include/'

much like hydrapolic told you.

[enpey]

Ok, Well it has been my silly mistake from copying and pasting the program into vim (The opening comment was not yet a comment). This program now compiles and executes as it is meant to without warning or error on my system.

I assume it must have been a similar silly mistake that prevented my other program from running as after re-writing that and using qmake-qt4 it now works fine.

Thanks to both hydrapolic and to TerryP for their suggestions...

[hydra]

You're welcome