selftests/futex: Update Makefile to use lib.mk

Adapt the futextest Makefiles to use lib.mk macros for RUN_TESTS and
EMIT_TESTS. For now, we reuse the run.sh mechanism provided by
futextest. This doesn't provide the standard selftests: [PASS|FAIL]
format, but the tests provide very similar output already.

This results in the run_kselftest.sh script for futexes including a
single line: ./run.sh

Cc: Shuah Khan <[e-mail]>
Cc: [e-mail]
Cc: Ingo Molnar <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: Davidlohr Bueso <[e-mail]>
Cc: KOSAKI Motohiro <[e-mail]>
Signed-off-by: Darren Hart <[e-mail]>
Signed-off-by: Shuah Khan <[e-mail]>

tools/testing/selftests/futex/Makefile

···
 SUBDIRS := functional
 
+TEST_PROGS := run.sh
+
 .PHONY: all clean
 all:
 	for DIR in $(SUBDIRS); do $(MAKE) -C $$DIR $@ ; done
 
-run_tests: all
+include ../lib.mk
+
+override define RUN_TESTS
 	./run.sh
+endef
+
+override define INSTALL_RULE
+	mkdir -p $(INSTALL_PATH)
+	install -t $(INSTALL_PATH) $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES)
+
+	@for SUBDIR in $(SUBDIRS); do \
+		$(MAKE) -C $$SUBDIR INSTALL_PATH=$(INSTALL_PATH)/$$SUBDIR install; \
+	done;
+endef
+
+override define EMIT_TESTS
+	echo "./run.sh"
+endef
 
 clean:
 	for DIR in $(SUBDIRS); do $(MAKE) -C $$DIR $@ ; done

tools/testing/selftests/futex/functional/Makefile

···
 	futex_wait_uninitialized_heap \
 	futex_wait_private_mapped_file
 
+TEST_PROGS := $(TARGETS) run.sh
+
 .PHONY: all clean
 all: $(TARGETS)
 
 $(TARGETS): $(HEADERS)
 
-run_tests: all
-	./run.sh
+include ../../lib.mk
 
 clean:
 	rm -f $(TARGETS)