fix xlib header case
On Archlinux libx11 installs
/usr/include/X11/Xlib.h, not /usr/include/X11/xlib.h
@@ -16,7 +16,7 @@ ENDIF()
set(CNGFX_SRCS ./CNFG3D.c ./CNFGFunctions.c)
IF(UNIX)
- check_include_file("X11/xlib.h" HAVE_X11_H)
+ check_include_file("X11/Xlib.h" HAVE_X11_H)
IF(HAVE_X11_H)
list(APPEND CNGFX_SRCS ./CNFGXDriver.c)
