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From: Anders Roxell <anders.roxell@linaro.org>
To: shuah@kernel.org, christian@brauner.io
Cc: nathan@kernel.org, ndesaulniers@google.com,
	linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
	llvm@lists.linux.dev, Anders Roxell <anders.roxell@linaro.org>,
	Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH 1/2] selftests: cgroup: build error multiple outpt files
Date: Fri,  5 Nov 2021 17:25:29 +0100	[thread overview]
Message-ID: <20211105162530.3307666-1-anders.roxell@linaro.org> (raw)

When building selftests/cgroup: with clang the following error are seen:

clang -Wall -pthread    test_memcontrol.c cgroup_util.c ../clone3/clone3_selftests.h  -o /home/anders/.cache/tuxmake/builds/current/kselftest/cgroup/test_memcontrol
clang: error: cannot specify -o when generating multiple output files
make[3]: *** [../lib.mk:146: /home/anders/.cache/tuxmake/builds/current/kselftest/cgroup/test_memcontrol] Error 1

Rework to add the header files to LOCAL_HDRS before including ../lib.mk,
since the dependency is evaluated in '$(OUTPUT)/%:%.c $(LOCAL_HDRS)' in
file lib.mk.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
 tools/testing/selftests/cgroup/Makefile | 12 +++++++-----
 tools/testing/selftests/lib.mk          |  2 +-
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/cgroup/Makefile b/tools/testing/selftests/cgroup/Makefile
index 59e222460581..745fe25fa0b9 100644
--- a/tools/testing/selftests/cgroup/Makefile
+++ b/tools/testing/selftests/cgroup/Makefile
@@ -11,10 +11,12 @@ TEST_GEN_PROGS += test_core
 TEST_GEN_PROGS += test_freezer
 TEST_GEN_PROGS += test_kill
 
+LOCAL_HDRS += $(selfdir)/clone3/clone3_selftests.h $(selfdir)/pidfd/pidfd.h
+
 include ../lib.mk
 
-$(OUTPUT)/test_memcontrol: cgroup_util.c ../clone3/clone3_selftests.h
-$(OUTPUT)/test_kmem: cgroup_util.c ../clone3/clone3_selftests.h
-$(OUTPUT)/test_core: cgroup_util.c ../clone3/clone3_selftests.h
-$(OUTPUT)/test_freezer: cgroup_util.c ../clone3/clone3_selftests.h
-$(OUTPUT)/test_kill: cgroup_util.c ../clone3/clone3_selftests.h ../pidfd/pidfd.h
+$(OUTPUT)/test_memcontrol: cgroup_util.c
+$(OUTPUT)/test_kmem: cgroup_util.c
+$(OUTPUT)/test_core: cgroup_util.c
+$(OUTPUT)/test_freezer: cgroup_util.c
+$(OUTPUT)/test_kill: cgroup_util.c
diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index fe7ee2b0f29c..a40add31a2e3 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -141,7 +141,7 @@ endif
 # Selftest makefiles can override those targets by setting
 # OVERRIDE_TARGETS = 1.
 ifeq ($(OVERRIDE_TARGETS),)
-LOCAL_HDRS := $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h
+LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h
 $(OUTPUT)/%:%.c $(LOCAL_HDRS)
 	$(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@
 
-- 
2.33.0


             reply	other threads:[~2021-11-05 16:25 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-05 16:25 Anders Roxell [this message]
2021-11-05 16:25 ` [PATCH 2/2] selftests: cgroup: use function 'labs()' over 'abs()' Anders Roxell
2021-11-05 20:15   ` Nick Desaulniers
2021-11-09 15:02   ` Christian Brauner
2021-11-05 20:10 ` [PATCH 1/2] selftests: cgroup: build error multiple outpt files Nick Desaulniers
2021-11-09 15:01 ` Christian Brauner
2021-11-20  0:22 ` Shuah Khan
2021-11-23 14:26   ` Christian Brauner
2021-11-30 16:41     ` Shuah Khan
2021-12-01 13:06       ` Christian Brauner
2021-12-03 17:08         ` Shuah Khan

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