Re: Current media_build doesn't succeed building on kernel 3.1.10

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Hi,

Mauro Carvalho Chehab wrote:
> Em Sun, 30 Sep 2012 20:52:42 +0200
>
> Martin Burnicki <martin.burnicki@xxxxxxxxxxxx> escreveu:
> > Hi all,
> >
> > is anybody out there who can help me with the media_build system? I'm
> > trying to build the current modules on an openSUSE 12.1 system (kernel
> > 3.1.10, x86_64), but I'm getting compilation errors because the s5k4ecgx
> > driver uses function devm_regulator_bulk_get() which AFAICS has been
> > introduced in kernel 3.4 only. When I run the ./build script compilation
> > stops with these messages:
> >
> >  CC [M]  /root/projects/media_build/v4l/s5k4ecgx.o
> > media_build/v4l/s5k4ecgx.c: In function 's5k4ecgx_load_firmware':
> > media_build/v4l/s5k4ecgx.c:346:2: warning: format '%d' expects argument
> > of \ type 'int', but argument 4 has type 'size_t' [-Wformat]
> > media_build/v4l/s5k4ecgx.c: In function 's5k4ecgx_probe':
> > media_build/v4l/s5k4ecgx.c:977:2: error: implicit declaration of \
> >     function 'devm_regulator_bulk_get'
> > [-Werror=implicit-function-declaration] cc1: some warnings being treated
> > as errors
>
> Those are warnings. It wil compile if you disable
> -Werror=implicit-function-declaration.

Hm, yes. Even though the module would finally not load due to "missing 
symbols" this won't matter since I don't need this module. So I suppose I 
need something like

EXTRA_CFLAGS=-Wno-error=implicit-function-declaration

to let this be treated like a warning and thus the build process will 
continue. However, I'm trying to use the ./build script from

git clone git://linuxtv.org/media_build.git

which seems to be best practice to get new modules added to an older kernel. 
Can you or someone else tell me how to pass these EXTRA_CFLAGS to the ./build 
script?

I've tried several ways without success.

Martin
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