Re: building a qt library

[Lorenzo Bettini]

Craig Sanders wrote:
> Greetings Lorenzo.
>
> I have used the GNU Autotools in the past to build some simple projects which 
> made use of the Qt Library. I prefer to use the GNU Autotools as I find them 
> much more flexible and much more powerful than qmake.
>
> As I recall, there are 2 key steps that need to be performed when using the GNU 
> Autotools with Qt.
>
> Step 1, You will need to get hold of an Autoconf macro which will detect if and 
> if so, where you have a Qt Library installed on your system. If this macro 
> detects that you have a Qt Library installed on your system, then it will 
> generate some appropriate settings for you.
>
> Step 2, You will also need to instruct the Autotools how to invoke the Qt moc 
> (Meta Object Compiler) on your relevant source code files.
>
> To accomplish the first step, you should be able to find an appropriate 
> Autoconf macro here ;
>
>   http://autoconf-archive.cryp.to/macros-by-category.html
>
> Personally, I use the macro bnv_have_qt - information about which can be found 
> here ;
>
>   http://autoconf-archive.cryp.to/bnv_have_qt.html
>
> I then call this macro from my configure.ac file as is illustrated below.
<SNIP>

Hi Craig

thanks a lot for your answer!

I've just tried this macro on a brand new empty project...  I'm testing 
it under windows with cygwin, and it seems to fail: I run configure like 
this

./configure --with-Qt-lib-dir=/usr/lib/qt3/lib/ 
--with-Qt-include-dir=/usr/include/qt3/ 
--with-Qt-bin-dir=/usr/lib/qt3/bin/ --with-Qt-lib=qt

and I get

checking for Qt... yes:
    QT_CXXFLAGS=-I/usr/include/qt3/
    QT_DIR=
    QT_LIBS=-L/usr/lib/qt3/lib/ -lqt  -lSM -lICE  -lX11 -lXext -lXmu 
-lXt -lXi
    QT_UIC=/usr/lib/qt3/bin//uic
    QT_MOC=/usr/lib/qt3/bin//moc
    QT_LRELEASE=/usr/lib/qt3/bin//lrelease
    QT_LUPDATE=/usr/lib/qt3/bin//lupdate
checking correct functioning of Qt installation... failure
configure: error: Failed to find matching components of a complete
                  Qt installation. Try using more options,
                  see ./configure --help.

Actually, the link phase of the test example fails...  have you even 
tried your project under cygwin?

cheers
        Lorenzo


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Lorenzo Bettini, PhD in Computer Science, DI, Univ. Torino
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