Re: Help required for Compiling a staging driver

Re: Help required for Compiling a staging driver

[Greg KH]

On Tue, Apr 15, 2014 at 12:08:18AM +0530, Kumar Gaurav wrote:
> Hi All,
> 
> I'm trying to upgrade a driver using semaphore to use mutex. I have 
> applied the required changes. Now i want to compile it to ensure that i 
> didn't broke the kernel.
> 
> Driver Path:drivers/staging/dgap/
> I Marked this driver to load as loadable module
> 
>      kumar@anandlinux:/usr/linux-git$ grep CONFIG_DGAP .config
>      CONFIG_DGAP=m
> 
> Now I'm trying to compile it using below command and getting result as given
>      kumar@anandlinux:/usr/linux-git$ sudo make M=drivers/staging/dgap/
>        Building modules, stage 2.
>        MODPOST 0 modules

Never build kernel code as root.  We used to have a bug in the build
system that if you did this, it would delete your whole filesystem.
Some of us argued that we should leave it there just to keep people from
ever doing this again :)

> So, No module is getting build and again i'm not getting any Error as 
> well. Please tell me where i'm doing wrong.

Have you built this kernel source tree before?  Do a full build first,
before trying to just build one directory.  That should resolve the
issue.

And again, not as root please.

greg k-h

Help required for Compiling a staging driver

[Kumar Gaurav]

Hi All,

I'm trying to upgrade a driver using semaphore to use mutex. I have 
applied the required changes. Now i want to compile it to ensure that i 
didn't broke the kernel.

Driver Path:drivers/staging/dgap/
I Marked this driver to load as loadable module

     kumar@anandlinux:/usr/linux-git$ grep CONFIG_DGAP .config
     CONFIG_DGAP=m

Now I'm trying to compile it using below command and getting result as given
     kumar@anandlinux:/usr/linux-git$ sudo make M=drivers/staging/dgap/
       Building modules, stage 2.
       MODPOST 0 modules

So, No module is getting build and again i'm not getting any Error as 
well. Please tell me where i'm doing wrong.

Regards,
Kumar Gaurav

Re: Help required for Compiling a staging driver

[Greg KH]

On Tue, Apr 15, 2014 at 12:17:24AM +0530, Kumar Gaurav wrote:
> On Tuesday 15 April 2014 12:16 AM, Greg KH wrote:
> > On Tue, Apr 15, 2014 at 12:08:18AM +0530, Kumar Gaurav wrote:
> >> Hi All,
> >>
> >> I'm trying to upgrade a driver using semaphore to use mutex. I have
> >> applied the required changes. Now i want to compile it to ensure that i
> >> didn't broke the kernel.
> >>
> >> Driver Path:drivers/staging/dgap/
> >> I Marked this driver to load as loadable module
> >>
> >>       kumar@anandlinux:/usr/linux-git$ grep CONFIG_DGAP .config
> >>       CONFIG_DGAP=m
> >>
> >> Now I'm trying to compile it using below command and getting result as given
> >>       kumar@anandlinux:/usr/linux-git$ sudo make M=drivers/staging/dgap/
> >>         Building modules, stage 2.
> >>         MODPOST 0 modules
> > Never build kernel code as root.  We used to have a bug in the build
> > system that if you did this, it would delete your whole filesystem.
> > Some of us argued that we should leave it there just to keep people from
> > ever doing this again :)
> >
> >> So, No module is getting build and again i'm not getting any Error as
> >> well. Please tell me where i'm doing wrong.
> > Have you built this kernel source tree before?  Do a full build first,
> > before trying to just build one directory.  That should resolve the
> > issue.
> What does it mean by full build? You mean compiling All modules? If yes 
> then is there anyway to mark all module at once or i need to mark 
> everything one by one (i use menuconfig)?

There's whole books out there that describe how to configure and build a
kernel, I suggest you look into them first (Linux Kernel in a Nutshell
is free online...)

greg k-h

Re: Help required for Compiling a staging driver

[Andev]

On Mon, Apr 14, 2014 at 2:47 PM, Kumar Gaurav
<kumargauravgupta3@gmail.com> wrote:

>
> What does it mean by full build? You mean compiling All modules? If yes then
> is there anyway to mark all module at once or i need to mark everything one
> by one (i use menuconfig)?
>

$ make defconfig
$ make localmodconfig
$ make -j4

Please read: http://www.kroah.com/lkn/

Re: Help required for Compiling a staging driver

[Kumar Gaurav]

On Tuesday 15 April 2014 12:16 AM, Greg KH wrote:
> On Tue, Apr 15, 2014 at 12:08:18AM +0530, Kumar Gaurav wrote:
>> Hi All,
>>
>> I'm trying to upgrade a driver using semaphore to use mutex. I have
>> applied the required changes. Now i want to compile it to ensure that i
>> didn't broke the kernel.
>>
>> Driver Path:drivers/staging/dgap/
>> I Marked this driver to load as loadable module
>>
>>       kumar@anandlinux:/usr/linux-git$ grep CONFIG_DGAP .config
>>       CONFIG_DGAP=m
>>
>> Now I'm trying to compile it using below command and getting result as given
>>       kumar@anandlinux:/usr/linux-git$ sudo make M=drivers/staging/dgap/
>>         Building modules, stage 2.
>>         MODPOST 0 modules
> Never build kernel code as root.  We used to have a bug in the build
> system that if you did this, it would delete your whole filesystem.
> Some of us argued that we should leave it there just to keep people from
> ever doing this again :)
>
>> So, No module is getting build and again i'm not getting any Error as
>> well. Please tell me where i'm doing wrong.
> Have you built this kernel source tree before?  Do a full build first,
> before trying to just build one directory.  That should resolve the
> issue.
What does it mean by full build? You mean compiling All modules? If yes 
then is there anyway to mark all module at once or i need to mark 
everything one by one (i use menuconfig)?
> And again, not as root please.
>
> greg k-h