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

obj-m += hello.o

all:
    make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules

clean:
    make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean

is a proper way to build modules see kbuild documentation

And to see difference beetween your compiler invocation you could

cat /lib/modules/$(shell uname -r)/build/Makefile

And analyze an output