Messages in this thread | | | Date | Tue, 24 Oct 2006 16:42:07 +0530 | From | Dipti Ranjan Tarai <> | Subject | Re: Link lib to a kernel module |
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Hi, As per my knowledge kernel module can not access to a library function. Library function are only accessible to user level program. Module can access exported symbol only.
Regards Dipti Ranjan Tarai
Matthias Fechner wrote: > Hi, > > I tried today to link a lib (.a) to my kernel module but I could not > found howto do it. > I prepared a little example: > hello.c: > #include <linux/kernel.h> > #include <linux/module.h> > #include <linux/io.h> > #include <linux/version.h> > #include "hello_lib.h" > > MODULE_LICENSE("GPL"); > > int init_module(void) > { > printHello(); > return 0; > } > > void cleanup_module(void) > { > printk("remove module\n"); > return; > } > > hello_lib.c: > int helloWorld(void) > { > printk("Hello World\n"); > return 0; > } > > hello_lib.h: > int helloWorld(void); > > Makefile: > KDIR := /lib/modules/$(shell uname -r)/build > PWD := $(shell pwd) > EXTRA_CFLAGS+=-I/usr/home/idefix/programming/kernel_hello_world_lib/ > > obj-m := hello.o > hello-obj := hello.o libarinc653.a > > all: > gcc -c -o hello_lib.o hello_lib.c > rm -f libhello_lib.a > ar cru libhello_lib.a hello_lib.o > $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules > > Can please someone help me here? > > Thx a lot, > Matthias > >
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