On Thu, 25 Mar 2004 18:09:13 +0100
Alexander Dalloz <alexander.dalloz(a)uni-bielefeld.de> wrote:
Am Do, den 25.03.2004 schrieb John Thompson um 17:46:
> For some reason I am unable to compile anything that uses Qt. It
> always fails thus:
>
>
> checking for Qt... configure: error: Qt (>= Qt 3.0.3) (library
> qt-mt) not found. Please check your installation!
> For more details about this problem, look at the end of
> config.log. Make sure that you have compiled Qt with thread
> support!
>
> Now, libqt-mt *does* exist:
>
> [root@starfleet root]# ls /usr/lib/qt3/lib/libqt-mt*
> /usr/lib/qt3/lib/libqt-mt.so /usr/lib/qt3/lib/libqt-mt.so.3.1
> /usr/lib/qt3/lib/libqt-mt.so.0 /usr/lib/qt3/lib/libqt-mt.so.3.1.2
> /usr/lib/qt3/lib/libqt-mt.so.3
>
> So what's the problem?
> -John (JohnThompson(a)new.rr.com)
This is for sure a FAQ for compilation effords requiring QT libs and
headers.
/usr/lib/qt3/lib is not standard search path. So be sure you point to
this library if things need to be linked against these libs. If I
check my FC1 the directory where the qt3 stuff is installed to is
/usr/lib/qt-3.1/ - not /usr/lib/qt3 - and thus /etc/ld.so.conf
contains an entry /usr/lib/qt-3.1/lib to point to the libraries
directory.
So if you compile something which need the QT libs and headers be sure
you point there. The QT libs path should be in ld.so.conf. Besides
that you may also need to pass gcc flags like -L/usr/lib/qt-3.1/lib
and-I/usr/lib/qt-3.1/include.
Thanks. I have added /usr/lib/qt-3.1/lib to /etc/ld.so.conf and run ldconfig. I have put
LDFLAGS=-L/usr/lib/qt-3.1/lib and CPPFLAGS=-I/usr/lib/qt-3.1/include in to the build
environment and yet it still fails:
[...]
configure:21754: rm -rf SunWS_cache; g++ -o conftest -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 -O2 -O2 -g -pipe -march=i686
-fno-exceptions -fno-check-new -I/usr/lib/qt3/include -I/usr/X11R6/include
-DQT_THREAD_SUPPORT -I/usr/lib/qt-3.1/include -D_REENTRANT -L-L/usr/lib/qt-3.1/lib
-L/usr/lib/qt3/lib -L/usr/X11R6/lib conftest.cc -lqt-mt -lpng -lz -lm -ljpeg -ldl
-lXext -lX11 -lSM -lICE -lpthread 1>&5
[...]
configure:21797: error: Qt (>= Qt 3.0.3) (library qt-mt) not found. Please check your
installation!
For more details about this problem, look at the end of config.log.
Make sure that you have compiled Qt with thread support!
Any other ideas?
--
-John (JohnThompson(a)new.rr.com)