[PATCH v2 1/6] Kbuild: Fix cleanup of generated sources in tools

[Rasmus Villemoes]

On 20/06/2023 00.41, Tobias Deiminger wrote:

>  quiet_cmd_wrap = WRAP    $@
> -cmd_wrap = echo "\#include <../$(patsubst $(obj)/%,%,$@)>" >$@
> +cmd_wrap = echo "\#include <../$(patsubst $(obj)/generated/%,%,$@)>" >$@
>  
> -$(obj)/boot/%.c $(obj)/common/%.c $(obj)/env/%.c $(obj)/lib/%.c:
> +$(obj)/generated/%.c:
>  	$(call cmd,wrap)

FWIW, this change incidentally also fixes a warning (and future error!)
from GNU Make. Building v2023.04 with GNU Make 4.4 produces

WRAP    tools/env/embedded.c
tools/Makefile:264: warning: pattern recipe did not update peer target
'tools/common/crc32.c'.
tools/Makefile:264: warning: pattern recipe did not update peer target
'tools/boot/crc32.c'.
tools/Makefile:264: warning: pattern recipe did not update peer target
'tools/lib/embedded.c'.
tools/Makefile:264: warning: pattern recipe did not update peer target
'tools/common/embedded.c'.
tools/Makefile:264: warning: pattern recipe did not update peer target
'tools/boot/embedded.c'.
  WRAP    tools/lib/sha1.c
  HOSTCC  tools/img2srec
tools/Makefile:264: warning: pattern recipe did not update peer target
'tools/env/sha1.c'.
tools/Makefile:264: warning: pattern recipe did not update peer target
'tools/common/sha1.c'.
tools/Makefile:264: warning: pattern recipe did not update peer target
'tools/boot/sha1.c'.

etc. See the first "WARNING: Future backward-incompatibility!" bullet in
https://lists.gnu.org/archive/html/help-make/2022-10/msg00020.html .

Rasmus