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[Discuss-gnuradio] GNU-radio build problem

From: Joseph DiVerdi
Subject: [Discuss-gnuradio] GNU-radio build problem
Date: Wed, 9 Apr 2003 12:51:56 -0600

I'm building GNU-radio, am experiencing a problem in the process, and am 
writing for advice on troubleshooting. The build is being performed under Red 
Hat 7.2 (with a 2.4.7-10 kernal).

The problem occurs during the configuration phase prior to make (./configure). 
A snippet of the console listing follows:

checking for X... libraries /usr/X11R6/lib, headers /usr/X11R6/include
checking for dnet_ntoa in -ldnet... no
checking for dnet_ntoa in -ldnet_stub... no
checking for gethostbyname... yes
checking for connect... yes
checking for remove... yes
checking for shmat... yes
checking for IceConnectionNumber in -lICE... yes
checking for Qt... configure: error: Qt (>= Qt 2.2.1) (libraries) not found. 
Please check your installation!
For more details about this problem, look at the end of config.log.

Looks like I've got a problem with Qt. Detailed examination of the config.log 
file offers the following snippet:

configure:8303: checking for Qt
tried NO
configure:8463: c++ -o conftest -g -O2 -Wall -Woverloaded-virtual 
-I/usr/lib/qt-2.3.1/include   -L/usr/lib/qt-2.3.1/lib  conftest.C  -lqt  -lSM 
-lICE  -lXext -lX11  -L/usr/X11R6/lib 1>&5
conftest.C: In function `int main ()':
conftest.C:15: warning: unused variable `QStringList *t'
conftest.C:20: warning: unused variable `int magnolia'
/usr/X11R6/lib/libfontconfig.so.1: undefined reference to `FT_Get_Next_Char'
collect2: ld returned 1 exit status
configure: failed program was:
#include "confdefs.h"
#include <qglobal.h>
#include <qapplication.h>
#include <qapp.h>
#include <qobjcoll.h>
#include <qevent.h>
#include <qstring.h>
#include <qstyle.h>
#include <qiconview.h>
#if ! (QT_VERSION >= 221)
#error 1

Based on the config.log output it looks to me that the problem is in the 
libfontconfig.so.1 library rather than in Qt.

Just to be sure I've confirmed the same results when building gnuradio-0.5, 
gnuradio-0.6, and gnuradio-0.7.

I've confirmed the installation of qt-2.3.1 and have, in fact, reinstalled it 
just to be sure.

I'm not certain how to run down the "undefined reference" complaint. 

Any thoughts on tracking this down further will be greatly appreciated.

Best regards,
Joseph A. DiVerdi, Ph.D., M.B.A.          
http://xtrsystems.com/           970.980.5868 (voice) 
PGP Key ID: 0xD50A9E33           970.224.3723 (fax)

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