Can't compile plasma apps
 

Whenever I attempt to compile plasma apps, I get the following error during make -

make[2]: *** [CMakeFiles/plasma_applet_cwp.dir/plasma-cwp-pixmap-dialog.o] Error 1
make[1]: *** [CMakeFiles/plasma_applet_cwp.dir/all] Error 2
make: *** [all] Error 2

I have looked, but I don't know what this means. Can someone explain it?

That's not the full output right? That would probably be more helpful. Also, make sure you have all the devel packages. Also, I believe there is a KDE forum and irc channels that may be better places for asking these questions:
http://forum.kde.org/
#plasma and #kde-devel on irc.freenode.net

Check your packages, if you are sure you have all the necessary packages, post the full output here.