linux-kernel - [PATCH v3 11/16] kunit: Always descend into kunit directory during build

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Message-Id: <20250611-kunit-kselftests-v3-11-55e3d148cbc6@linutronix.de>
Date: Wed, 11 Jun 2025 09:38:17 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Masahiro Yamada <masahiroy@...nel.org>, 
 Nathan Chancellor <nathan@...nel.org>, 
 Andrew Morton <akpm@...ux-foundation.org>, Willy Tarreau <w@....eu>, 
 Thomas Weißschuh <linux@...ssschuh.net>, 
 Brendan Higgins <brendan.higgins@...ux.dev>, 
 David Gow <davidgow@...gle.com>, Rae Moar <rmoar@...gle.com>, 
 Shuah Khan <shuah@...nel.org>, Jonathan Corbet <corbet@....net>, 
 Nicolas Schier <nicolas.schier@...ux.dev>, 
 Paul Walmsley <paul.walmsley@...ive.com>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
 Alexandre Ghiti <alex@...ti.fr>, Nicolas Schier <nicolas.schier@...ux.dev>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>, 
 linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com, 
 linux-doc@...r.kernel.org, linux-riscv@...ts.infradead.org, 
 workflows@...r.kernel.org, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH v3 11/16] kunit: Always descend into kunit directory during
 build

An upcoming change will add 'userprogs' to the kunit subdirectory.
For kbuild to properly clean up these build artifacts the subdirectory
needs to be always processed.

Pushing the special logic for hook.o into the kunit Makefile also makes the
logic easier to understand.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
 lib/Makefile       | 4 ----
 lib/kunit/Makefile | 2 +-
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/lib/Makefile b/lib/Makefile
index c38582f187dd81916113319072e5cfef26f26c84..698566135091cc3bf0054f1954b434dc3325364a 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -108,11 +108,7 @@ test_fpu-y := test_fpu_glue.o test_fpu_impl.o
 CFLAGS_test_fpu_impl.o += $(CC_FLAGS_FPU)
 CFLAGS_REMOVE_test_fpu_impl.o += $(CC_FLAGS_NO_FPU)
 
-# Some KUnit files (hooks.o) need to be built-in even when KUnit is a module,
-# so we can't just use obj-$(CONFIG_KUNIT).
-ifdef CONFIG_KUNIT
 obj-y += kunit/
-endif
 
 ifeq ($(CONFIG_DEBUG_KOBJECT),y)
 CFLAGS_kobject.o += -DDEBUG
diff --git a/lib/kunit/Makefile b/lib/kunit/Makefile
index 5aa51978e456ab3bb60c12071a26cf2bdcb1b508..656f1fa35abcc635e67d5b4cb1bc586b48415ac5 100644
--- a/lib/kunit/Makefile
+++ b/lib/kunit/Makefile
@@ -17,7 +17,7 @@ kunit-objs +=				debugfs.o
 endif
 
 # KUnit 'hooks' are built-in even when KUnit is built as a module.
-obj-y +=				hooks.o
+obj-$(if $(CONFIG_KUNIT),y) +=		hooks.o
 
 obj-$(CONFIG_KUNIT_TEST) +=		kunit-test.o
 obj-$(CONFIG_KUNIT_TEST) +=		platform-test.o

-- 
2.49.0