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List:       kde-devel
Subject:    Newbie KFileDialog linking error/question
From:       "Jason L. Buberel" <jason () buberel ! org>
Date:       2003-05-19 5:28:17
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Could anyone find the obvious error here... I am just starting to play around 
with KDevelop (Gideon) 3.0.0a4 (KDE 3.1.1a on Gentoo Linux 1.4 using GCC 
3.2.2 and libtool 1.4.1) and I am just putting together a simple HellWorld 
application to get a feel for things.

The code snippet that I am working on is:

    QString startDir = "/home/jason";
    QString filter = "*";
    QString caption = "Open a file";
    QString otherFileName = KFileDialog::getOpenFileName(startDir, filter, 
this, caption);

This compiles just fine, but I get the following error during link time:

source='helloworld.cpp' object='helloworld.o' libtool=no 
depfile='.deps/helloworld.Po' tmpdepfile='.deps/helloworld.TPo' depmode=gcc3 
/bin/sh /home/jason/src/kde/helloworld/admin/depcomp g++ -DHAVE_CONFIG_H -I. 
-I/home/jason/src/kde/helloworld/src -I.. -I/usr/kde/3.1/include 
-I/usr/qt/3/include -I/usr/X11R6/include -DQT_THREAD_SUPPORT -D_REENTRANT 
-Wnon-virtual-dtor -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith 
-Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE 
-Wcast-align -Wconversion -Wchar-subscripts -O2 -Wformat-security 
-Wmissing-format-attribute -fno-exceptions -fno-check-new -fno-common -c -o 
helloworld.o `test -f 'helloworld.cpp' || echo 
'/home/jason/src/kde/helloworld/src/'`helloworld.cpp 

 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor 
-Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith 
-Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE 
-Wcast-align -Wconversion -Wchar-subscripts -O2 -Wformat-security 
-Wmissing-format-attribute -fno-exceptions -fno-check-new -fno-common -o 
helloworld -R /usr/kde/3.1/lib -R /usr/qt/3/lib -R /usr/X11R6/lib 
-L/usr/X11R6/lib -L/usr/qt/3/lib -L/usr/kde/3.1/lib main.o helloworld.o 
-lkdeui  
* helloworld.o(.text+0x9e1): In function `HelloWorld::fileOpen()': 
* : undefined reference to `KFileDialog::getOpenFileName(QString const&, 
QString const&, QWidget*, QString const&)' 
* collect2: ld returned 1 exit status 
* gmake[2]: *** [helloworld] Error 1 
* gmake[2]: Target `all' not remade because of errors. 
* gmake[1]: *** [all-recursive] Error 1 
* gmake: *** [all] Error 2

I have verfied that the KDE libraries are indeed installed in /usr/kde/3.1/lib 
(-L/usr/kde/3.1/lib, -R/usr/kde/3.1/lib). Other KDE and Qt classes appear to 
link just fine when used in both static and non-static contexts (KURL, 
KMessageBox::Information(), etc.). All other aspects of my KDE environment 
appear to be working just fine (other installed KDE apps are definitely using 
KFileDialog objects). I get basically the same error when I use 
KFileDialog::getOpenURL() static method.

I have tried to 'Build -> Clean Project', then 'Build -> Run Automake & 
Friends', then 'Build -> Run Configure' before trying to compile, link, and 
run. The KDevelop project was created with the New Project Wizard.

Any help appreciated.

-jason


 
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