printk is not my friend

[Charles Brown]

OK. so if i 'touch driver.c', leave it empty, and do this in the makefile'

ifneq ($(KERNELRELEASE),)
       obj-m := driver.o
       driver-objs := hello.o cdev.o

everything is happy.

--CB

Charles Brown wrote:
> my problem seems to be a Makefile issue.  Following LDD3, i had started
> a char driver file (cdev.c), which i planned to add to hello.c, and i'd
> done this in the makefile;
> 
> ifneq ($(KERNELRELEASE),)
>      obj-m := hello.o
>      hello-objs := cdev.o
> 
> if i take out that 'cdev.o' it works.  I re-read that section of LDD3,
> "If, instead, you have a module called module.ko that is generated from
> two source files (called, say, file1.c and file2.c), the correct
> incantation would be:
> 
> obj-m := module.o
> module-objs := file1.o file2.o
> 
> So, i tried this;
> 
> ifneq ($(KERNELRELEASE),)
>      obj-m := module.o
>      hello-objs := hello.o cdev.o
> 
> but make says, "No rule to make diver.c".
> 
> --CB
> 
> 
>
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