linux-kernel - [PATCH] selftests: Makefile: create OUTPUT dir

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Message-ID: <20240916075655.4117151-1-anders.roxell@linaro.org>
Date: Mon, 16 Sep 2024 09:56:55 +0200
From: Anders Roxell <anders.roxell@...aro.org>
To: shuah@...nel.org
Cc: willemb@...gle.com,
	kuba@...nel.org,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Anders Roxell <anders.roxell@...aro.org>
Subject: [PATCH] selftests: Makefile: create OUTPUT dir

When cross building kselftest out-of-tree the following issue can be
seen:

[...]
make[4]: Entering directory
'/src/kernel/linux/tools/testing/selftests/net/lib'
  CC       csum
/usr/lib/gcc-cross/aarch64-linux-gnu/13/../../../../aarch64-linux-gnu/bin/ld:
cannot open output file /tmp/build/kselftest/net/lib/csum: No such
file or directory
collect2: error: ld returned 1 exit status
[...]

Create the output build directory before building the targets, solves
this issue with building 'net/lib/csum'.

Suggested-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
---
 tools/testing/selftests/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index b38199965f99..05c143bcff6a 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -261,6 +261,7 @@ ifdef INSTALL_PATH
 	@ret=1;	\
 	for TARGET in $(TARGETS) $(INSTALL_DEP_TARGETS); do \
 		BUILD_TARGET=$$BUILD/$$TARGET;	\
+		mkdir -p $$BUILD_TARGET;	\
 		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET install \
 				INSTALL_PATH=$(INSTALL_PATH)/$$TARGET \
 				SRC_PATH=$(shell readlink -e $$(pwd)) \
-- 
2.45.2