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Message-Id: <1486630590-9410-1-git-send-email-mpe@ellerman.id.au>
Date:   Thu,  9 Feb 2017 19:56:26 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     shuahkh@....samsung.com, bamvor.zhangjian@...wei.com
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
        linux-kselftest@...r.kernel.org, linux-api@...r.kernel.org
Subject: [PATCH 1/5] selftests: Fix selftests build to just build, not run tests

In commit 88baa78d1f31 ("selftests: remove duplicated all and clean
target"), the "all" target was removed from individual Makefiles and
added to lib.mk.

However the "all" target was added to lib.mk *after* the existing
"runtests" target. This means "runtests" becomes the first (default)
target for most of our Makefiles.

This has the effect of causing a plain "make" to build *and run* the
tests. Which is at best rude, but depending on which tests are run could
oops someone's build machine.

  $ make -C tools/testing/selftests/
  ...
  make[1]: Entering directory 'tools/testing/selftests/bpf'
  gcc -Wall -O2 -I../../../../usr/include   test_verifier.c -o tools/testing/selftests/bpf/test_verifier
  gcc -Wall -O2 -I../../../../usr/include   test_maps.c -o tools/testing/selftests/bpf/test_maps
  gcc -Wall -O2 -I../../../../usr/include   test_lru_map.c -o tools/testing/selftests/bpf/test_lru_map
  #0 add+sub+mul FAIL
  Failed to load prog 'Function not implemented'!
  #1 unreachable FAIL
  Unexpected error message!
  #2 unreachable2 FAIL
  ...

Fix it by moving the "all" target to the start of lib.mk, making it the
default target.

Fixes: 88baa78d1f31 ("selftests: remove duplicated all and clean target")
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
---
 tools/testing/selftests/lib.mk | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index 01bb7782a35e..17ed4bbe3963 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -2,6 +2,11 @@
 # Makefile can operate with or without the kbuild infrastructure.
 CC := $(CROSS_COMPILE)gcc
 
+TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
+TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
+
+all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
+
 define RUN_TESTS
 	@for TEST in $(TEST_GEN_PROGS) $(TEST_PROGS); do \
 		BASENAME_TEST=`basename $$TEST`;	\
@@ -42,11 +47,6 @@ endef
 emit_tests:
 	$(EMIT_TESTS)
 
-TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
-TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
-
-all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
-
 clean:
 	$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
 
-- 
2.7.4

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