Messages in this thread | | | Subject | Re: [PATCH] lz4c: shut up lz4c output | From | Michal Marek <> | Date | Mon, 29 Feb 2016 13:58:13 +0100 |
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On 2016-02-29 13:40, Arnd Bergmann wrote: > When KERNEL_LZ4 is set, we always get an output even when building > with 'make -s': > > *** LZ4 Compression CLI , by Yann Collet (May 31 2013) *** > ! Generating compressed LZ4 using Legacy format (deprecated !) ! > Using stdin for input > Using stdout for output > Compressed 11213376 bytes into 4555781 bytes ==> 40.63% > Done in 0.63 s ==> 16.97 MB/s > > The output is not helpful in the context of building the kernel, > so this patch hides the stdout output of the lz4 binary completely.
> - lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ > + lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ 2>&1 || \ > (rm -f $@ ; false)
Hi Arnd,
this redirection does not hide it, but rather includes it in the compressed image file.
BTW, my copy of lz4c only displays this warning with -v.
Michal
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