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Old 01-06-2004, 11:41 PM   #1
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Registered: Jan 2004
Location: Pune, Mharashtra, India
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kernel progarmmer's(module compiletion problem)==> full detail<==

==> i try to compile this module code form root password
/* hello.c - The simplest kernel module.
#include <linux/module.h> /* Needed by all modules */
#include <linux/kernel.h> /* Needed for KERN_ALERT */
#include <linux/modversions.h>
int init_module(void)
printk("Hello world 1.\n");
// A non 0 return means init_module failed; module can't be loaded.
return 0;
void cleanup_module(void)
printk("Goodbye world 1.\n");

==>for compiling this module i use a bash file that contain's
hello.o: hello.c /usr/include/linux/version.h
gcc -Wall -DMODULE -D__KERNEL__ -DLINUX -c hello.c

==> but these error's are come
error i
hello.o:: command not found
In file included from hello.c:3:
/usr/include/linux/module.h:60: parse error before `atomic_t'
/usr/include/linux/module.h:60: warning: no semicolon at end of struct or union
/usr/include/linux/module.h:60: warning: no semicolon at end of struct or union
/usr/include/linux/module.h:62: parse error before `}'
/usr/include/linux/module.h:62: warning: data definition has no type or storage class
/usr/include/linux/module.h:91: parse error before `}'
hello.c: In function `init_module':
hello.c:11: warning: implicit declaration of function `printk'

==> i m using RH7.3 kernel please help me for solving this problem
Old 01-07-2004, 01:04 AM   #2
Registered: Jul 2003
Location: bangalore . india
Distribution: openSUSE 10.3
Posts: 251

Rep: Reputation: 33
try compiling it with
gcc -Wall -DMODULE -D__KERNEL__ -DLINUX -c hello.c -I /usr/src/<linux-2.x.x>/include -nostdinc

would work fine..

you are not supposed to be picking up user land header files that are there in /usr/include


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