[AD] X11 include path used in allegro build

[Markus Henschel <markus.henschel@xxxxxxxxxx>]

Hi,

I tried to compile allegro using my cross compile toolchain and get an error when including X11 support: "X11/Xlib.h" cannot be found. I think the reason for this is that allegro doesn't use the cmake provided include path ${X11_INCLUDE_DIR}. I think the right thing to is taking the X11 include path reported by the cmake and adding it to the system include path. I attached a patch to fix this. Could you please review it? 

Thanks

Markus

Attachment: add X11 include directory found by cmake to system include directories.patch
Description: add X11 include directory found by cmake to system include directories.patch