linux-kernel - [PATCH] selftests/vm: fix out-of-tree build

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Date:   Mon, 15 Mar 2021 17:47:00 +0800
From:   Rong Chen <rong.a.chen@...el.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Shuah Khan <shuah@...nel.org>
Cc:     Rong Chen <rong.a.chen@...el.com>,
        kernel test robot <lkp@...el.com>,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] selftests/vm: fix out-of-tree build

When building out-of-tree, attempting to make target from $(OUTPUT) directory:

  make[1]: *** No rule to make target '$(OUTPUT)/protection_keys.c', needed by '$(OUTPUT)/protection_keys_32'.

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Rong Chen <rong.a.chen@...el.com>
---
 tools/testing/selftests/vm/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile
index 4cbc91d6869f..73e1cc96d7c2 100644
--- a/tools/testing/selftests/vm/Makefile
+++ b/tools/testing/selftests/vm/Makefile
@@ -102,7 +102,7 @@ endef
 ifeq ($(CAN_BUILD_I386),1)
 $(BINARIES_32): CFLAGS += -m32
 $(BINARIES_32): LDLIBS += -lrt -ldl -lm
-$(BINARIES_32): %_32: %.c
+$(BINARIES_32): $(OUTPUT)/%_32: %.c
 	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
 $(foreach t,$(TARGETS),$(eval $(call gen-target-rule-32,$(t))))
 endif
@@ -110,7 +110,7 @@ endif
 ifeq ($(CAN_BUILD_X86_64),1)
 $(BINARIES_64): CFLAGS += -m64
 $(BINARIES_64): LDLIBS += -lrt -ldl
-$(BINARIES_64): %_64: %.c
+$(BINARIES_64): $(OUTPUT)/%_64: %.c
 	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
 $(foreach t,$(TARGETS),$(eval $(call gen-target-rule-64,$(t))))
 endif
-- 
2.20.1