[FFmpeg-devel] [PATCH v8 14/15] fftools/graphprint: Add execution graph printing

[Michael Niedermayer]

On Tue, Apr 29, 2025 at 08:33:50PM +0000, softworkz . wrote:
> 
> 
> > -----Original Message-----
> > From: ffmpeg-devel <ffmpeg-devel-bounces at ffmpeg.org> On Behalf Of Michael
> > Niedermayer
> > Sent: Dienstag, 29. April 2025 21:35
> > To: FFmpeg development discussions and patches <ffmpeg-devel at ffmpeg.org>
> > Subject: Re: [FFmpeg-devel] [PATCH v8 14/15] fftools/graphprint: Add execution
> > graph printing
> > 
> > Hi softworkz
> > 
> > On Tue, Apr 29, 2025 at 01:00:03AM +0000, softworkz wrote:
> > > From: softworkz <softworkz at hotmail.com>
> > >
> > > The key benefits are:
> > >
> > > - Different to other graph printing methods, this is outputting:
> > >   - all graphs with runtime state
> > >     (including auto-inserted filters)
> > >   - each graph with its inputs and outputs
> > >   - all filters with their in- and output pads
> > >   - all connections between all input- and output pads
> > >   - for each connection:
> > >     - the runtime-negotiated format and media type
> > >     - the hw context
> > >     - if video hw context, both: hw pixfmt + sw pixfmt
> > > - Output can either be printed to stdout or written to specified file
> > > - Output is machine-readable
> > > - Use the same output implementation as ffprobe, supporting multiple
> > >   formats
> > 
> > fails on arm cross compile (no zlib maybe)
> > 
> > /usr/lib/gcc-cross/arm-linux-gnueabi/7/../../../../arm-linux-gnueabi/bin/ld:
> > fftools/resources/resman.o: in function `decompress_gzip':
> > ffmpeg/arm/src/fftools/resources/resman.c:82: undefined reference to
> > `inflateInit2_'
> > /usr/lib/gcc-cross/arm-linux-gnueabi/7/../../../../arm-linux-gnueabi/bin/ld:
> > ffmpeg/arm/src/fftools/resources/resman.c:94: undefined reference to `inflate'
> > /usr/lib/gcc-cross/arm-linux-gnueabi/7/../../../../arm-linux-gnueabi/bin/ld:
> > ffmpeg/arm/src/fftools/resources/resman.c:110: undefined reference to
> > `inflateEnd'
> 
> 
> Ouch! I thought that zlib could be taken for granted.
> 
> What should I do? Guard this and everything else that is depending on it
> by #if blocks?
> 
> Thanks for any advice, I'm not sure how to approach this exactly...

#if or make the whole tool depend on zlib in configure

or write a basic zlib implementation ;)

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Observe your enemies, for they first find out your faults. -- Antisthenes
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