How to specify another directfb-config to the configure script?

Hello friends!

How to specify another directfb-config to the configure script? Iā€™m
doing a custom DirectFB compile and need to recompile SDL to test some
applications.

I tried with the DIRECTFBCONFIG parameter but the configure script
cannot find the directfb-config! :frowning:

Please give me some help!

Thanks in advice!