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Message-ID: <20241016194149.4178898-1-chris.packham@alliedtelesis.co.nz>
Date: Thu, 17 Oct 2024 08:41:49 +1300
From: Chris Packham <chris.packham@...iedtelesis.co.nz>
To: masahiroy@...nel.org,
	nathan@...nel.org,
	nicolas@...sle.eu
Cc: linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH v2] kbuild: Restore the ability to build out of tree dtbs

A build pattern to handle out of tree dtbs is to copy the .dts file into
the kernel source tree and run `make myboard.dtb`. This is supported by
the wildcard %.dtb rule in the Makefile but recent changes to split the
dtb handling out of scripts/Makefile.build stopped this from working.
Restore this functionality by looking for .dtb in $(MAKECMDGOALS) as
well as $(targets).

Fixes: e7e2941300d2 ("kbuild: split device tree build rules into scripts/Makefile.dtbs")
Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
---

Notes:
    Changes in v2:
    - keep $(target) and search for .dtb in $(MAKECMDGOALS)

 scripts/Makefile.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 8f423a1faf50..78763a4bc58a 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -449,7 +449,7 @@ ifneq ($(userprogs),)
 include $(srctree)/scripts/Makefile.userprogs
 endif
 
-ifneq ($(need-dtbslist)$(dtb-y)$(dtb-)$(filter %.dtb %.dtb.o %.dtbo.o,$(targets)),)
+ifneq ($(need-dtbslist)$(dtb-y)$(dtb-)$(filter %.dtb %.dtb.o %.dtbo.o,$(targets))$(filter %.dtb,$(MAKECMDGOALS)),)
 include $(srctree)/scripts/Makefile.dtbs
 endif
 
-- 
2.47.0


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