Setting headers and libraries paths?

Master Fox · 07-26-2007, 07:01 PM

Sorry if this is in the wrong forum

I recently switched distro to Arch (I like it). But when I try to compile programs which need QT I always occur with the error, checking for Qt... configure: error: Qt (>= Qt 3.2) (headers and libraries) not found.
QT is installed and I can easy do ./configure --with-qt-dir= parameter

but how would I fix it so I don't have to do it each time on each differnt file?
The current path that I know works and ./configure doesn't fail on me is: --with-qt-dir=/opt/qt

Also one more offtopic question, how do I remove the highlight copy and paste? its really annoying me

Tinkster · 07-26-2007, 07:40 PM

If you look at the output of (pretty much any) ./configure --help you'll
see something like this towards the end:

Code:

Some influential environment variables:
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
              nonstandard directory <lib dir>
  CPPFLAGS    C/C++ preprocessor flags, e.g. -I<include dir> if you have
              headers in a nonstandard directory <include dir>
  CXX         C++ compiler command
  CXXFLAGS    C++ compiler flags
  CPP         C preprocessor
  CXXCPP      C++ preprocessor
  F77         Fortran 77 compiler command
  FFLAGS      Fortran 77 compiler flags

So ... if you put something like

Code:

export CPPFLAGS=-I/opt/qt/include
export LDFLAGS=-L/opt/qt/lib

in your ~/.bashrc (or equivalent initialisation script)
I'd assume you should be sweet?

Cheers,
Tink

Master Fox · 07-27-2007, 07:48 AM

Still coming up with the same error, i've added it to my .bashrc, logged out and logged back in again and it still accurs

Below is the config.log error

Code:

configure:28110: checking for Qt
configure: 28175: /opt/qt4/include/qstyle.h
configure: 28175: /opt/qt4/qstyle.h
configure: 28175: /usr/lib/qt3/include/qstyle.h
configure: 28175: /usr/lib/qt3/qstyle.h
configure: 28175: /usr/lib/qt/include/qstyle.h
configure: 28175: /usr/lib/qt/qstyle.h
configure: 28175: /usr/share/qt3/include/qstyle.h
configure: 28175: /usr/share/qt3/qstyle.h
configure: 28175: /usr/local/qt/include/qstyle.h
configure: 28175: /usr/include/qt/qstyle.h
configure: 28175: /usr/include/qstyle.h
configure: 28175: /usr/X11R6/include/X11/qt/qstyle.h
configure: 28175: /usr/X11R6/include/qt/qstyle.h
configure: 28175: /usr/X11R6/include/qt2/qstyle.h
configure: 28175: /usr/include/qt3/qstyle.h
configure: 28175: ./qstyle.h
tried NO
tried /opt/qt4/lib
tried /opt/qt4
tried /usr/lib/qt3/lib
tried /usr/lib/qt3
tried /usr/lib/qt/lib
tried /usr/lib/qt
tried /usr/share/qt3/lib
tried /usr/share/qt3
tried /usr/X11R6/lib
tried /usr/lib
tried /usr/local/qt/lib
tried /usr/lib
configure:28293: rm -rf SunWS_cache; g++ -o conftest -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall -W -Wpointer-arith -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -W$
/usr/bin/ld: cannot find -lqt-mt
collect2: ld returned 1 exit status
configure:28296: $? = 1
configure: failed program was:
#include "confdefs.h"
#include <qglobal.h>
#include <qapplication.h>
#include <qcursor.h>
#include <qstylefactory.h>
#include <private/qucomextra_p.h>
#if ! (QT_VERSION >= 0x030200)
#error 1
#endif

int main() {
    (void)QStyleFactory::create(QString::null);
    QCursor c(Qt::WhatsThisCursor);
    return 0;
}
configure:28336: error: Qt (>= Qt 3.2) (headers and libraries) not found. Please check your installation!
For more details about this problem, look at the end of config.log.

I've tried copying and linking the path/directoy to /usr/lib but then gives me another error about qt-mt not being found. I have both QT3.2 and QT4 installed but not being detected

Tinkster · 07-27-2007, 02:43 PM

Out of curiosity: do those environment variables show up
in the shell you're running configure from?

env|grep FLAGS

Cheers,
Tink

Master Fox · 07-27-2007, 07:25 PM

They do,

[paw-fox ~]$ env|grep FLAGS
LDFLAGS=-L/opt/qt/lib
CPPFLAGS=-I/opt/qt/include