module compiling : asm/linkage.h file not found

Question

I am trying to compile an example of \"hello world\" Kernel Module, problems found on ubuntu 11.04, kernel 3.2.6, gcc 4.5.2 and fedora 16, kernel 3.2.7, gcc 4.6.7.

c

Answer 1

The asm includes (such as linkage.h) are architecture specific. There should be a set of directories under:

    /usr/src/kernels/(kernel version goes here)/arch

that provide specific includes for the specific CPU architecture you are targeting your code to be compiled for.

Try adding this to your Makefile:

    KVERSION :=R(shell uname -r)

and add the kernel and architecture (x86 in this example):

    INCDIRS = -I./include -I/usr/src/kernels/$(KVERSION)/include -I/usr/src/kernels/$(KVERSION)/arch/x86