Missing cmake check for Xrender

[Allen Winter]

On Tuesday 27 January 2009 9:10:21 am Allen Winter wrote:
> On Tuesday 27 January 2009 4:46:33 am Josef Spillner wrote:
> > Hello,
> > 
> > my kdelibs cmake checks completed successfully but make then later choked when 
> > X11/extensions/Xrender.h was not found in kfilepreviewgenerator.
> > A cmake check should be added.
> > 
> kfilepreviewgenerator unconditionally (for X11 anyway) includes X11/extensions/Xrender.h
> 
> So we either
> 1) hard-require Xrender.
> 2) make Xrender optional, but then we need someone to look a the code and
>     add conditional compiles for X11_Xrender_FOUND.
> 
> I volunteer to make the change to the buildsystem, but first I need to know
> if we will require Xrender for KDE on X11.  I believe Xrender is optional
> in several other KDE modules already.
> 
Ok, I took care of this.
kfilepreviewgenerator can now build with or without Xrender.
And the kdelibs CMakeLists.txt will print a logging message about Xrender discovery.