Re: Insmod problems

On Tue, 4 Dec 2001, Michael Zhu wrote:

| I've define these two when I compile the module. The
| command line is:
|
| gcc -D_KERNEL_ -DMODULE -c hello.c

Check the spelling of "__KERNEL__".

~Randy

| --- Tyler BIRD <[e-mail]> wrote:
| > You need to define the __KERNEL__ and MODULE symbols
| >
| > #define __KERNEL__
| > #define MODULE
| >
| >
| > >>> Nav Mundi <[e-mail]> 12/04/01 09:33AM
| > >>>
| > What are we doing wrong? - Nav & Michael
| > **************************************************
| >
| > hello.c Source:
| >
| > #include "/home/mzhu/linux/include/linux/config.h"
| > /*retrieve the CONFIG_* macros */
| > #if defined(CONFIG_MODVERSIONS) &&
| > !defined(MODVERSIONS)
| > #define MODVERSIONS  /* force it on */
| > #endif
| >
| > #ifdef MODVERSIONS
| > #include
| > "/home/mzhu/linux/include/linux/modversions.h"
| > #endif
| >
| > #include "/home/mzhu/linux/include/linux/module.h"
| >
| > int init_module(void)  { printk("<1>Hello,
| > world\n");  return 0; }
| > void cleanup_module(void) { printk("<1>Goodbye cruel
| > world\n"); }
| >
| > Output:
| >
| > #>gcc -D_KERNEL_ -DMODULE -c hello.c
| >
| > [This builds the hello.o file. ]
| >
| > #>insmod hello.o
| >
| > hello.o : unresolved symbol printk
| > hello.o : Note: modules without a GPL compatible
| > license cannot use
| > GPONLY_symbols