Re: [Qemu-devel] [PATCH] Fix TAGS creation

[Markus Armbruster]

David Gibson <address@hidden> writes:

> Currently the Makefile creates TAGS for emacs with the command:
>     find "$(SRC_PATH)" -name '*.[hc]' -print0 | xargs -0 etags
> That works only if xargs ends up invoking etags just once.  If xargs runs
> etags several times, as it will if there are enough files, then the later
> invocations will overwrite the output from the earlier invocations.  This
> patch uses the etags --append option to fix the bug.
>
> Signed-off-by: David Gibson <address@hidden>
> ---
>  Makefile |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/Makefile b/Makefile
> index 2262410..bb576da 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -331,7 +331,8 @@ test speed: all
>  
>  .PHONY: TAGS
>  TAGS:
> -     find "$(SRC_PATH)" -name '*.[hc]' -print0 | xargs -0 etags
> +     rm -f $@
> +     find "$(SRC_PATH)" -name '*.[hc]' -print0 | xargs -0 etags --append
>  
>  cscope:
>       rm -f ./cscope.*

Slightly more portable:

    find "$(SRC_PATH)" -name '*.[hc]' -exec etags --append {} +