On Sun, Jul 10, 2011 at 11:03 AM, Prashant Shah <pshah.mumbai@gmail.com>wrote:

Hi,

On Sun, Jul 10, 2011 at 10:07 AM, Ponkumaran Annadurai <aspkumaran@gmail.com> wrote:

...

I am trying to compile a sample hello world module, but when issue make command, it says that "make: Nothing to be done for `all'.".

------------------- Makefile -------------------------- obj-m += testmod.o

KERNELDIR ?= /lib/modules/$(shell uname -r)/build PWD := $(shell pwd)

default: $(MAKE) -C $(KERNELDIR) M=$(PWD)

clean: rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions

depend .depend dep: $(CC) $(CFLAGS) -M *.c > .depend

ifeq (.depend,$(wildcard .depend)) include .depend endif

------------------------------------------------------------------

when I tried your script it prompted that there might be tab instead of eight spaces. So I inserted 8 spaces there, but it still prompted the same. Also I couldn't understand the script (particularly $(MAKE) - what does the variable stands for? also the rest of the code after "depend.depend.dep"). If you can explain the script, I shall know how to edit the script for my file. -- kumaran

Hi, On Sun, Jul 10, 2011 at 11:36 AM, Ponkumaran Annadurai <aspkumaran@gmail.com> wrote:

when I tried your script it prompted that there might be tab instead of eight spaces. So I inserted 8 spaces there, but it still prompted the same.

Sending file as attachment.

On Sun, Jul 10, 2011 at 12:15 PM, Prashant Shah <pshah.mumbai@gmail.com>wrote:

Hi,

On Sun, Jul 10, 2011 at 11:36 AM, Ponkumaran Annadurai <aspkumaran@gmail.com> wrote:

...

Also I couldn't understand the script (particularly $(MAKE) - what does

the

...

variable stands for? also the rest of the code after "depend.depend.dep"). If you can explain the script, I shall know how to edit the script for my file.

Edit the Makefile and add the following echo's

`default: echo $(MAKE) echo $(KERNELDIR) echo $(PWD) $(MAKE) -C $(KERNELDIR) M=$(PWD)

You can try echoing the values of the variables. The $(MAKE) is the make command used.

Thanks sir, It worked. But still I couldn't understand what is the wrong in the makefile given in TLDP.org, also the if statements as said in the previous mail. One more thing can I install the new kernel in a virtual machine like virtual box? if so how can I do it? coz I can't access Internet from that kernel. Suggesting some measures will be helpful. -- thanks, kumaran

On Sun, Jul 10, 2011 at 10:09 PM, Niamathullah sharief <newbiesha@gmail.com>wrote:

Dear Kumaran,

Try to compile with the below makefile

*"

obj-m += hello-1.o

all: make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules

clean: make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean"

*This was the one I tried first, but it didn't work. The code suggested by Prashant worked. I just want to know why the above code doesn't work.

Regards Sharief

Thanks sir, It worked. But still I couldn't understand what is the wrong in the makefile given in TLDP.org, also the if statements as said in the previous mail. One more thing can I install the new kernel in a virtual machine like virtual box? if so how can I do it? coz I can't access Internet from that kernel. Suggesting some measures will be helpful.

-- thanks, kumaran

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...

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-- thanks, kumaran