#
# Makefile for the kernel character device drivers.
#
# Note! Dependencies are done automagically by 'make dep', which also
# removes any old dependencies. DON'T put your own dependencies here
# unless it's something special (ie not a .c file).
#
# Note 2! The CFLAGS definitions are now inherited from the
# parent makes..
#

# Object file lists.

obj-y		:=
obj-m		:=
obj-n		:=
obj-		:=

O_TARGET := radio.o

# All of the (potential) objects that export symbols.
# This list comes from 'grep -l EXPORT_SYMBOL *.[hc]'.

export-objs     := miropcm20-rds-core.o

list-multi	:= miropcm20.o

miropcm20-objs	:= miropcm20-rds-core.o miropcm20-radio.o

obj-$(CONFIG_RADIO_AZTECH) += radio-aztech.o
obj-$(CONFIG_RADIO_RTRACK2) += radio-rtrack2.o
obj-$(CONFIG_RADIO_SF16FMI) += radio-sf16fmi.o
obj-$(CONFIG_RADIO_CADET) += radio-cadet.o
obj-$(CONFIG_RADIO_TYPHOON) += radio-typhoon.o
obj-$(CONFIG_RADIO_TERRATEC) += radio-terratec.o
obj-$(CONFIG_RADIO_MAXIRADIO) += radio-maxiradio.o
obj-$(CONFIG_RADIO_RTRACK) += radio-aimslab.o
obj-$(CONFIG_RADIO_ZOLTRIX) += radio-zoltrix.o
obj-$(CONFIG_RADIO_MIROPCM20) += miropcm20.o
obj-$(CONFIG_RADIO_MIROPCM20_RDS) += miropcm20-rds.o
obj-$(CONFIG_RADIO_GEMTEK) += radio-gemtek.o
obj-$(CONFIG_RADIO_GEMTEK_PCI) += radio-gemtek-pci.o
obj-$(CONFIG_RADIO_TRUST) += radio-trust.o
obj-$(CONFIG_RADIO_MAESTRO) += radio-maestro.o

include $(TOPDIR)/Rules.make

miropcm20.o: $(miropcm20-objs)
	$(LD) -r -o $@ $(miropcm20-objs)

 /* hello.c 
 * 
 * "Hello, world" - the loadable kernel module version. 
 *
 * Compile this with 
 *
 *          gcc -c hello.c -Wall
 */

/* Declare what kind of code we want from the header files */
#define __KERNEL__         /* We're part of the kernel */
#define MODULE             /* Not a permanent part, though. */

/* Standard headers for LKMs */
#include <linux/modversions.h> 
#include <linux/module.h>  

#define _LOOSE_KERNEL_NAMES
    /* With some combinations of Linux and gcc, tty.h will not compile if
       you don't define _LOOSE_KERNEL_NAMES.  It's a bug somewhere.
    */
#include <linux/tty.h>      /* console_print() interface */

/* Initialize the LKM */
int init_module()
{
  console_print("Hello, world - this is the kernel speaking\n");
  /* More normal is printk(), but there's less that can go wrong with 
     console_print(), so let's start simple.
  */

  /* If we return a non zero value, it means that 
   * init_module failed and the LKM can't be loaded 
   */
  return 0;
}


/* Cleanup - undo whatever init_module did */
void cleanup_module()
{
  console_print("Short is the life of an LKM\n");
}

gcc -c -Wall hello.c

In file included from HelloMod.c:15:
/usr/include/linux/modversions.h:1:2: #error Modules should never use kernel-headers system headers,
/usr/include/linux/modversions.h:2:2: #error but rather headers from an appropriate kernel-source package.
/usr/include/linux/modversions.h:3:2: #error Change -I/usr/src/linux/include (or similar) to
/usr/include/linux/modversions.h:4:2: #error -I/lib/modules/$(uname -r)/build/include
/usr/include/linux/modversions.h:5:2: #error to build against the currently-running kernel.

gcc -c -Wall hello.c -I/lib/modules/2.4.18-5/build/include

./HelloMod.o: kernel-module version mismatch
	./HelloMod.o was compiled for kernel version 2.4.18-5custom
	while this kernel is version 2.4.18-5.

./HelloMod.o: kernel-module version mismatch
	./HelloMod.o was compiled for kernel version 2.4.18-5custom
	while this kernel is version 2.4.18-5.