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Full Discussion: Make cannot generate .ko linux kernel module
Top Forums Programming Make cannot generate .ko linux kernel module Post 302577065 by vistastar on Monday 28th of November 2011 06:11:06 AM
Old 11-28-2011
Make cannot generate .ko linux kernel module
cannot generate .ko file on my linux, although it can generate module.symvers.
But when I copy .c file and Makefile to another linux computer, there's no problem.

The strange thing is: make is successfuly executed, and returned 0;
Code:
make output:

	make -C /lib/modules/2.6.18-92.el5xen/build  
	M=/home/ye         modules
	make[1]: Entering directory `/usr/src/kernels/2.6.18-92.el5-xen-i686' 
	Building modules, stage 2. 
	MODPOST 
	make[1]: Leaving directory  `/usr/src/kernels/2.6.18-92.el5-xen-i686'


system: RHEL5
Code:
Makefile:
  1 ifneq ($(KERNELRELEASE),)
  2     obj-m:=hello.o
  3 else
  4     KDIR:=/lib/modules/$(shell uname -r)/build
  5     PWD:=$(shell pwd)
  6 default:
  7     $(MAKE) -C $(KDIR) M=$(PWD) modules
  8 clean:
  9     $(MAKE) -C $(KDIR) M=$(PWD) clean 
 10 endif

Code:
hello.c

 1 #include<linux/init.h>
  2 #include<linux/module.h>
  3 #include<linux/moduleparam.h>
  4 
  5 MODULE_LICENSE("GPL");
  6 
  7 static char *my_string = "parameter";
  8 static int my_int = 1;
  9 
 10 module_param(my_string,charp,S_IRUGO);
 11 module_param(my_int,int,S_IRUGO);
 12 
 13 
 14 static int hello_init(void){
 15     
 16     
 17 
 18     printk(KERN_ALERT "%s %d\n",my_string,my_int);
 19     return 0;
 20 }
 21 
 22 static void hello_exit(void){
 23     printk(KERN_ALERT "goodbye\n");
 24 }
 25 
 26 module_init(hello_init);
 27 module_exit(hello_exit);

Last edited by vistastar; 11-28-2011 at 07:40 AM..
 

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LEARN ABOUT CENTOS

create_makefiles

CREATE_MAKEFILES()														CREATE_MAKEFILES()

NAME

       create_makefiles - Recreates all Makefiles beneath a directory

SYNOPSIS

       create_makefiles [dir]

DESCRIPTION

       create_makefiles recreates all Makefiles in dir and its (recursed) subdirectories from the corresponding Makefile.am templates.

       This script must be run from the toplevel directory (the one containing configure). This script saves time compared to re-running configure
       completely.

       If the source directory is different from the build directory (see the environment variables below), it will be assumed that each
       Makefile.am and Makefile.in belongs beneath the source directory and that each Makefile belongs beneath the build directory.

       This utility is part of the KDE Software Development Kit.

ENVIRONMENT

       One of the following variables (but not both) should be set if the source directory is different from the build directory. If the build
       directory is simply a subdirectory of the source directory, the simpler variable OBJ_SUBDIR should be used.

       OBJ_SUBJDIR
	   Indicates that the build directory is in the given subdirectory of the source directory. For instance, if the source directory is
	   kdesdk and the build directory is kdesdk/obj-i386-linux, then OBJ_SUBDIR should be set to obj-i386-linux.

       OBJ_REPLACEMENT
	   A sed expression that is used to transform the source directory into the build directory. For instance, if the source directory is
	   kdesdk/obj-i386-linux, then OBJ_REPLACEMENT should be set to s#kdesdk#kdesdk-obj#.

SEE ALSO

       create_makefile(1) make(2)

AUTHORS

       create_makefiles was written by David Faure<faure@kde.org>.

       This manual page was prepared by Ben Burton<bab@debian.org> for the Debian GNU/Linux system (but may be used by others).

																CREATE_MAKEFILES()
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