[RFC PATCH bpf-next v5 5/8] selftests/bpf: generate verifier/tests.h in a regular recipe

The verifier/tests.h recipe is a $(shell ...) expansion: the command
runs while make expands the recipe line - including under make -n -
its exit status is discarded, and the resulting (empty) expansion is
what make actually executes. Turn it into a plain recipe.

Signed-off-by: Mykola Lysenko <[email protected]>
---
 tools/testing/selftests/bpf/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 774286a55..0ee02eeac 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -922,12 +922,12 @@ $(eval $(call DEFINE_TEST_RUNNER,test_maps))
 # them (e.g., test.h is using completely pattern), that it's worth just
 # explicitly defining all the rules explicitly.
 verifier/tests.h: verifier/*.c
-	$(shell ( cd verifier/; \
+	$(Q)( cd verifier/; \
 		  echo '/* Generated header, do not edit */'; \
 		  echo '#ifdef FILL_ARRAY'; \
 		  ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
 		  echo '#endif' \
-		) > verifier/tests.h)
+		) > verifier/tests.h
 $(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
 	$(call msg,BINARY,,$@)
 	$(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
-- 
2.43.0