StackOverflow2013

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POQt 4.8.3 installation on Windows 7 & QtWebkit problems
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copied!<p>I just updated my Qt to 4.8.3, because the program built from older version is not compatible to the new framework. </p> <p>So I have to upgrade.</p> <p>This process was frustrating and time consuming. So many problems came out.</p> <p>I download Qt from this url: <a href="http://qt-project.org/downloads" rel="nofollow">http://qt-project.org/downloads</a></p> <p>At beginning, I installed the MinGW one (I'm not a fan of MSVC).</p> <p>I tried the newest ( I think it's 4.6) version of MinGW and order version (4.4). However, after I installed MinGW and tried to install Qt 4.8.3, during the process, the following message shows up:</p> <blockquote> <pre><code>There is a problem with your MinGW installation: The installer could not find a valid C:\MinGW\include\w32api.h (Only versions with W32API 3.13 are supported) Do you still want to continue? (Your installation may not work) </code></pre> </blockquote> <p>The 4.6 version does have this w32api.h file, I don't know what's going on. And I have trouble finding MinGW 4.4 with this head file. </p> <p>I decide to ignore this warning and continue to install Qt and Qt creator. After that, I opened my current project, configure it (why the configuration become so complex...), I tried to build it.</p> <p>Then the following message shows up because some external lib I used requires Exception Handling:</p> <blockquote> <p>exception handling disabled, use -fexceptions to enable</p> </blockquote> <p>And I don't know how to enable the it. I tried to add <strong><em>-fexceptions</em></strong> flag in QMAKE_CXXFLAGS but it doesn't work.</p> <p>By the way, I tried the VC version of Qt too, but I used the MinGW before and the VC compiler is quite different, if I use VC version, it will take a lot of time to make it compilable by VC compiler.</p> <p>Does anyone know how to install Qt 4.8.3 on Windows? my project works fine before, now I just want to compile it successfully.......</p> <p>These are not the only problem. I updated the Qt on Mac machine too, it is easier to have the compiler work since it's unix base.</p> <p>However, I used QtWebkit lib in my project and obviously, they changed this lib and it's not compatible to order version.</p> <p>I can compile my project on Mac, however, every time I run it, following massage shows up and the program stopped.</p> <blockquote> <p>dyld: Symbol not found: _OBJC_CLASS_$_CALayerHost Referenced from: /Library/Frameworks/QtWebKit.framework/Versions/4/QtWebKit Expected in: /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore</p> <p>The program has unexpectedly finished.</p> </blockquote> <p>Does any one know how to solve this QtWebKit problem? I'll really appreciate.</p> <p>I remembered that when Qt is under nokia, it's so easy to install and use, the Qt SDK is perfect.</p> <p>I really hate the change made after it was bought by digia.........</p>

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