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Old October 12th, 2006, 11:07 PM
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Default Kernel compilation probelm

Hi, new here, and having trouble with hello-1.c compliling.
I am using Fedora Core 4, and here is my hello-1.c
 * hello#8722;1.c #8722; The simplest kernel module
#define KERN_INFO
        module_LICENSE("GPL"); //also tried MODULE_LINCENSE("GPL");

#include <linux/module.h> /* Needed by all modules */
#include <linux/kernel.h> /* Needed for KERN_INFO */
int init_module(void)
        printk(KERN_INFO "Hello world 1.\n");
         * A non 0 return means init_module failed; module can't be loaded.
        return 0;
void cleanup_module(void)
        printk(KERN_INFO "Goodbye world 1.\n");
 here is my make file
CFLAGS = -D __KERNEL__ -D MODULE -isystem /lib/modules/`uname -r`/build/include/
$ hello-1.o: hello-1.c
        gcc $(CFLAGS) -O2 -Wall -c hello-1.c
.PHONY: clean
        rm -rf *.o a.out

gcc -D __KERNEL__ -D MODULE -isystem /lib/modules/`uname -r`/build/include/ -O2 -Wall -c hello-1.c
hello-1.c:5: error: syntax error before string constant
hello-1.c:5: warning: type defaults to ‘int’ in declaration of ‘module_LICENSE’
hello-1.c:5: warning: data definition has no type or storage class
In file included from /usr/include/linux/module.h:10,
                 from hello-1.c:7:
/usr/include/linux/config.h:5:2: error: #error Incorrectly using glibc headers for a kernel module
hello-1.c: In function ‘init_module’:
hello-1.c:11: warning: implicit declaration of function ‘printk’
make: *** [hello-1.o] Error 1

Here is the output from the screen.

Thanks for the help.

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Old October 24th, 2006, 07:49 AM
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#define KERN_INFO
What happens if you put this all on to one line? i.e.

#define KERN_INFO module_LICENSE("GPL");
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