Re: [Qemu-devel] [PATCH] allow to build with older sed

[Daniel P. Berrange]

On Fri, Jan 19, 2018 at 12:52:27AM -0700, Jan Beulich wrote:
> sed's -E option may not be supported by older distros. As there's no
> point using sed here at all, use just shell mechanisms to establish the
> variable values, starting from the stem instead of the full target.
> 
> Signed-off-by: Jan Beulich <address@hidden>

Reviewed-by: Daniel P. Berrange <address@hidden>

> --- a/Makefile
> +++ b/Makefile
> @@ -242,8 +242,7 @@ GENERATED_FILES += $(KEYCODEMAP_FILES)
>  
>  ui/input-keymap-%.c: $(KEYCODEMAP_GEN) $(KEYCODEMAP_CSV) 
> $(SRC_PATH)/ui/Makefile.objs
>       $(call quiet-command,\
> -         src=$$(echo $@ | sed -E -e 
> "s,^ui/input-keymap-(.+)-to-(.+)\.c$$,\1,") && \
> -         dst=$$(echo $@ | sed -E -e 
> "s,^ui/input-keymap-(.+)-to-(.+)\.c$$,\2,") && \
> +         stem=$* && src=$${stem%-to-*} dst=$${stem#*-to-} && \
>           test -e $(KEYCODEMAP_GEN) && \
>           $(PYTHON) $(KEYCODEMAP_GEN) \
>                 --lang glib2 \

Clever ! I was hoping someone might suggest a cleaner approach one day

Regards,
Daniel
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