Hello,
I am compiling KDE 4.10.1 on an older RHEL 6.4 system. It all works fine, but I would like to control my GTK themes along-side the KDE for a better visual integration.
I know the kde-gtk-config does this, but requires gtk3 which is not available on RHEL 6. If I start to re-build gtk3 from a later Fedora version, I start to get into dependencies and have to rebuild a handfull of packages which I would rather not do.

I know an ealier verison of this module, I believe 1.6, when it was called chakra-gtk-config supported just GTK2 but I have not been able to get it via gitto use with kdesrc-build, just the 1.7 version which has GTK3. Is there a cmake flag option that can be passed for kde-gtk-config which disables the gtk3 support so that it will compile and work on systems without it?

Thanks in advance.

no idea but try
cd build; ccmake ..
it should telly you about compile options