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 -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html