On Sun, Mar 20, 2011 at 12:40, Darrell Anderson <humanreadable@...> wrote:
> How are you folks getting QT3 and QT4 to coexist together and to ensure KDE4 finds QT4 and not QT3 and 3.5.10 or Trinity find QT3 and not QT4?
>
> I'm looking at the latest Slackware release. Looks like the QT4 location is defined by the QT4DIR environment variable and not QTDIR. That is good news.
>
> Another difference is in the KDE3 days, QTDIR pointed to /usr/lib/qt, which was a sym link to /usr/lib/qt-3.3.8b. In the latest Slackware release, the QT4 files are installed directly to /usr/lib/qt and there is no sym link.
>
> If I understand correctly, when I build a QT3 package on a QT4 system, I should compile QT3 to install at /usr/lib/qt3 and then set a QTDIR environment variable to that location before compiling 3.5.10/Trinity packages.
>
> Does this sound correct?
>
> Darrell
>

You can use -DQT_LIBRARY_DIRS and -DQT_INCLUDE_DIRS with cmake to specify this.



-- 
later, Robert Xu