Mine

What is the location of the directory of C header files that match your running
kernel? [/usr/src/linux/include] 

The path "/usr/src/linux/include" is a kernel header file directory, but it 
does not contain the file "linux/version.h" as expected.  This can happen if 
the kernel has never been built, or if you have invoked the "make mrproper" 
command in your kernel directory.  In any case, you may want to rebuild your 
kernel.