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2010.05.02 12:25 "Re: qmake (Qt) and libtiff "undefined symbols" problem on mac (snow leopard).", by Toby Thain
On 2-May-10, at 9:39 PM, Dave wrote:
> Hi Chris,
> Can you provide some more info on how to build libtiff on my 64 bit
> machine? I could not find the options in the "configure" step.
>
If you are building libtiff from source, by default it will build for
a single architecture (build host's). If you obtained a binary library
from somewhere else, then as Chris says, it may simply not include the
needed architecture.
Perhaps Qt Creator is setting architecture options for your
application's objects? (I know nothing about Qt Creator.) Check the
exact compile commands being used, and/or project settings.
You might find `lipo -info` or `file` handy here (see below).
--Toby
$ lipo -info /usr/local/lib/libgd.a
input file /usr/local/lib/libgd.a is not a fat file
Non-fat file: /usr/local/lib/libgd.a is architecture: ppc7400
$ lipo -info /usr/lib/libcrypto.dylib
Architectures in the fat file: /usr/lib/libcrypto.dylib are: ppc7400
ppc64 i386 x86_64
>
> Thank you.
> Dave
>
> On Sat, May 1, 2010 at 10:51 PM, Chris Cox <ccox@adobe.com> wrote:
> 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
>
>
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