project with a dll and a testprog (doesn't compile)

[aMan]

Hi, i have the following structure in my project:
tester/tester.pro
tester/tester.cpp
calina/widget.h
calina/widget.cpp
calina/calina.pro
main.pro

main.pro

SUBDIRS += calina \
 tester
TEMPLATE = subdirs 
CONFIG += warn_on \
          qt \
          thread

SUBDIRS += calina \
 tester
TEMPLATE = subdirs 
CONFIG += warn_on \
          qt \
          thread

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calina.pro

TEMPLATE = lib
 
CONFIG += dll \
debug \
opengl \
x11
CONFIG -= release \
stl \
thread
QT += xml \
opengl
TARGET = ../bin/calina
 
HEADERS += widget.h
 
SOURCES += widget.cpp

TEMPLATE = lib

CONFIG += dll \
debug \
opengl \
x11
CONFIG -= release \
stl \
thread
QT += xml \
opengl
TARGET = ../bin/calina

HEADERS += widget.h

SOURCES += widget.cpp

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tester.pro

TEMPLATE = app
 
CONFIG -= release \
stl \
thread
CONFIG += debug \
opengl
QT += xml \
opengl
INCLUDEPATH += ../calina
 
LIBS += -L../calina \
-l../bin/calina
TARGETDEPS += ../calina/lib../bin/calina.so
 
SOURCES += tester.cpp

TEMPLATE = app

CONFIG -= release \
stl \
thread
CONFIG += debug \
opengl
QT += xml \
opengl
INCLUDEPATH += ../calina

LIBS += -L../calina \
-l../bin/calina
TARGETDEPS += ../calina/lib../bin/calina.so

SOURCES += tester.cpp

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tester.cpp

#include "widget.h"
 
int main(int argc, char *argv[])
{
 
	calina::Widget widget;
	widget.doSomething();
 
	return 0;
}

#include "widget.h"

int main(int argc, char *argv[])
{

	calina::Widget widget;
	widget.doSomething();

	return 0;
}

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but if i try to compile it, i get the followin error

## no error, the lib is compiled and then moved to /bin/libcalina.so.1.0.0
make[1]: Leaving directory `/home/damdam/Documents/projekte/dipl_arb/source/calina'
cd tester && /usr/bin/qmake tester.pro -unix -o Makefile
cd tester && make -f Makefile
make[1]: Entering directory `/home/damdam/Documents/projekte/dipl_arb/source/tester'
g++ -c -pipe -g -Wall -W -D_REENTRANT -DQT_XML_LIB -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/default -I. -I/usr/include/QtCore -I/usr/include/QtCore -I/usr/include/QtGui -I/usr/include/QtGui -I/usr/include/QtOpenGL -I/usr/include/QtOpenGL -I/usr/include/QtXml -I/usr/include/QtXml -I/usr/include -I../calina -I/usr/X11R6/include -I. -I. -o tester.o tester.cpp
tester.cpp:33: warning: unused parameter ‘argc’
tester.cpp:33: warning: unused parameter ‘argv’
make[1]: *** Keine Regel vorhanden, um das Target »../calina/lib../bin/calina.so«,
benötigt von »tester«, zu erstellen. Schluss.
//make[1]: *** No rule to create target >>../calina/lib.......s<<
// needed by >>teser<<
make[1]: Leaving directory `/home/damdam/Documents/projekte/dipl_arb/source/tester'
make: *** [sub-tester-make_default] Fehler 2
// .. error 2

Can you pleas help me?

[fullmetalcoder]

Try this :

calina.pro :

TEMPLATE = lib
CONFIG += dll debug
CONFIG -= thread stl release
DESTDIR = ../bin
QT += xml opengl
TARGET = calina
HEADERS += widget.h
SOURCES += widget.cpp

TEMPLATE = lib
CONFIG += dll debug
CONFIG -= thread stl release
DESTDIR = ../bin
QT += xml opengl
TARGET = calina
HEADERS += widget.h
SOURCES += widget.cpp

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tester.pro :

TEMPLATE = app
CONFIG += debug
CONFIG -= thread stl release
QT += xml opengl
INCLUDEPATH += ../calina
LIBS += -L../bin -lcalina
SOURCES += tester.cpp

TEMPLATE = app
CONFIG += debug
CONFIG -= thread stl release
QT += xml opengl
INCLUDEPATH += ../calina
LIBS += -L../bin -lcalina
SOURCES += tester.cpp

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[aMan]

Thank you, it compiles fine now. But when i try to execute it, i get the following error:

./tester/tester: error while loading shared libraries: libcalina.so.1: cannot open shared object file: No such file or directory

The lib is in
./bin/libcalina.so
./bin/libcalina.so.1
./bin/libcalina.so.1.0
./bin/libcalina.so.1.0.0

The exe file
./tester/tester

The same, if both the .so files and the tester (bin/exe) are in the same dir..

lld on the tester (exe) shows

linux-gate.so.1 =>  (0xffffe000)
libcalina.so.1 => not found
libQtXml.so.4 => /usr/lib/libQtXml.so.4 (0xb7f12000)
...

linux-gate.so.1 =>  (0xffffe000)
libcalina.so.1 => not found
libQtXml.so.4 => /usr/lib/libQtXml.so.4 (0xb7f12000)
...

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I know whats wrong, but i don't know, how to solve it..

[jacek]

./tester/tester: error while loading shared libraries: libcalina.so.1: cannot open shared object file: No such file or directory

There are two solutions. Either you have to edit your /etc/ld.so.conf (or /etc/ls.so.conf.d/something) and run ldconfig as root or make LD_LIBRARY_PATH environment variable point to a directory where the library is.

[aMan]

thank you, it works..

[aMan]

Hi,
I have still the same pro files, as posted above by fullmetalcoder, but now i'm on windows with vs2005.

The lib is compiled fine and a dll is created. But when it comes to compile the tester program, i get an error like this (translated from german):

link /LIBPATH:"c:\qt\lib" /NOLOGO /DEBUG /SUBSYSTEM:WINDOWS /incremental:no /OUT:"..\bin\tester.exe" @C:\DOKUME~1\damdam\LOKALE~1\Temp\nm817.tmp
LINK : fatal error LNK1181: Input file "calina.lib" couldn't be opened.
.
NMAKE : fatal error U1077: ""C:\Programme\Microsoft Visual Studio 8\VC\BIN\link.EXE"": Return-Code "0x49d"
Stop.
NMAKE : fatal error U1077: ""C:\Programme\Microsoft Visual Studio 8\VC\BIN\nmake.exe"": Return-Code "0x2"
Stop.
NMAKE : fatal error U1077: "cd": Return-Code "0x2"
Stop.

I do compiling with qmake nmake and nothing else. Please help me..

[marcel]

Open the project properties and under Linker look at:

• General, and see if you have the directory of the lib file listed in "Additional library directories". If not, add it there.
• Input, at "Additional Dependencies" and see if you have "calina.lib" listed there. Also, if it isn't there, add it yourself.

EDIT: Well yes, as I can see from your post, you don't meet the conditions for the first point in the solution I have suggested.
So do this, and see if you get any other errors. You shouldn't.

Regards

[aMan]

I'm compiling on the command line, so I don't have a project file (only makefiles) and cannot open vs. And I don't have an lib file too (should have mentioned that), because I want dynamic linking..

There should be an option in the pro file for fixing that, but i don't know it (it has to be in the pro file, because it must be platform independant..)

[marcel]

But that lib is just the import library used by the linker to link your application to the dll.
So, even if you link dynamically, you will still need a ".lib" to map the functions in your program's import address table to the dll library.

Try with DEPENDPATH qmake variable and set it to the path of the additional dependencies directories( your library).


Regards

[aMan]

So how can i get the lib file?

I've tried compiling the lib statically and a calina.lib was created, but the result of compiling the tester was static too.

I've looked into the qt/lib directory. For instance QtGui has 9 files:
QtGui4.dll
QtGui4.exp
QtGui4.lib
QtGui.prl

QtGuid4.dll
QtGuid4.exp
QtGuid4.lib
QtGuid4.pdb
QtGuid.prl

I assume the d in the second list stands for debug, because there is also a pdb file (program debug file from vs). But there are still 4 files for one lib, in my project there is only one (calina.dll) created.

[marcel]

It will be generated automatically...
It is by default placed in Debug or Release, depending on which target you compile/.

Regards