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May 2010

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2010.05.02 01:54 "qmake (Qt) and libtiff "undefined symbols" problem on mac (snow leopard).", by Dave Sun
2010.05.02 02:51 "Re: qmake (Qt) and libtiff "undefined symbols" problem on mac (snow leopard).", by Chris Cox
2010.05.02 11:39 "Re: qmake (Qt) and libtiff "undefined symbols" problem on mac (snow leopard).", by <hotdog.sun@gmail.com>
2010.05.02 12:25 "Re: qmake (Qt) and libtiff "undefined symbols" problem on mac (snow leopard).", by Toby Thain
2010.05.02 21:48 "Re: qmake (Qt) and libtiff "undefined symbols" problem on mac (snow leopard).", by Dmitry Fedorov

2010.05.02 02:51 "Re: qmake (Qt) and libtiff "undefined symbols" problem on mac (snow leopard).", by Chris Cox

The important line would be "ld: warning: in /usr/local/lib/libtiff.dylib,
file is not of required architecture"
You have a libtiff that isn't compiled for your architecture.
(probably 32 bit when you need 64, or vice versa)

Chris


________________________________________
From: tiff-bounces@lists.maptools.org [tiff-bounces@lists.maptools.org] On
Behalf Of Dave Sun [hotdog.sun@gmail.com]
Sent: Saturday, May 01, 2010 6:54 PM
To: tiff@lists.maptools.org
Subject: [Tiff] qmake (Qt) and libtiff "undefined symbols" problem on mac   
   (snow leopard).

Dear folks,

I have problems using qmake to compile my simplest libtiff program. Here are
the information about my system.

computer:  Darwin Darwin Kernel Version 10.2.0: Tue Nov  3 10:37:10 PST
2009; root:xnu-1486.2.11~1/RELEASE_I386 i386
Qt version: Qt 4.6.2
libtiff version: 3.9.2
operating system: snow leopard.
Simplest program:

#include <QtCore/QCoreApplication>
#include "tiff.h"
#include "tiffio.h"
#include <iostream>

int main(int argc, char *argv[])
{
    //QCoreApplication a(argc, argv);
    TIFF* tif = TIFFOpen("foo.tif", "r");
    if(tif == NULL)
       std::cout << "could not open the file";
    TIFFClose(tif);
    //return a.exec();
std::cout << "hello";
    return 0;
}

my pro file:

QT       -= gui
TARGET = libtiffSimpleTest
CONFIG   += console
CONFIG   -= app_bundle
TEMPLATE = app
LIBS += -ltiff
SOURCES += main.cpp

I used Qt creator as my IDE. When I run compiling program I got the
following error:


ld: warning: in /usr/local/lib/libtiff.dylib, file is not of required
architecture

Undefined symbols:

"_TIFFOpen", referenced from:

_main in main.o

ld: symbol(s) not found

collect2: ld returned 1 exit status

make: *** [libtiffSimpleTest] Error 1


However, when I just use the following:

g++ main.cpp -ltiff


It works well. What is the problem here?



Thank you.

Dave