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Re: building a qt library
From: |
Craig Sanders |
Subject: |
Re: building a qt library |
Date: |
Sun, 30 Nov 2008 13:35:44 +1100 |
Lorenzo Bettini <address@hidden> wrote:>
> 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
Hello again Lorenzo.
I haven't tried configuring and building my Qt project using Cygwin under
Windows. Rather, I have only configured and built it under Linux Fedora Core 2
and using the default Qt installation (version 3.3) that is distributed with it.
If I invoke the following switch ;
--with-Qt-dir
when I run the configure script, then my project successfully configures and
compiles. This has always worked for me, so I haven't bothered to try using any
of the other Qt related configure script switches, i.e. --with-Qt-lib-dir, etc.
You could maybe try using this approach, and if you find that it doesn't work
for you then you could perhaps send an e-mail to the author of the bnv_have_qt
macro. I don't use Windows for software development, so I'm not sure what you
would need to do in order to get the bnv_have_qt macro to find your Qt
installation using just this one configure script switch. Sorry I can't be of
more any more help.
Good luck with it.
- Craig Sanders