include library headers in config file?

[marcopus]

Hi @mattearly and thanks for the cmake tutorials

In Ep.5 (4'20") you show how you can include the library header in OLASConfig.h.in instead of in main.cpp. Then you reverted this and went back and include the header in the main program, like so

OurLordAndSavior/main.cpp

Lines 5 to 7 in 147484f

	#ifdef USE_ADDER
	#include <adder.h>
	#endif

Is it possible to do the other way and include library headers in the header config file?