[PATCH 09/13] Makefile: Split static checker targets

[David Gibson <david@gibson.dropbear.id.au>]

Currently we have a single 'cppcheck' and 'clang-tidy' target which checks
passt.  However, it doesn't check the additional binaries, qrap and
passt-repair.  In preparation for running the static checkers on those as
well, split the targets into a top-level rule and a pattern rule which we
will be able to reuse.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 Makefile | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 9cb5e1ba..b8a3cf9e 100644
--- a/Makefile
+++ b/Makefile
@@ -183,8 +183,13 @@ docs: README.md
 CLANG_TIDY = clang-tidy
 CLANG_TIDY_FLAGS = -DCLANG_TIDY_58992
 
-clang-tidy: $(PASST_SRCS)
-	$(CLANG_TIDY) $^ -- $(BASE_CPPFLAGS) $(CPPFLAGS) $(CLANG_TIDY_FLAGS)
+clang-tidy: passt.clang-tidy
+
+.PHONY: %.clang-tidy
+%.clang-tidy:
+	$(CLANG_TIDY) $(filter %.c,$^) -- $(BASE_CPPFLAGS) $(CPPFLAGS) $(CLANG_TIDY_FLAGS)
+
+passt.clang-tidy: $(PASST_SRCS) $(PASST_HEADERS) seccomp.h
 
 CPPCHECK = cppcheck
 CPPCHECK_FLAGS = --std=c11 --error-exitcode=1 --enable=all --force	\
@@ -199,5 +204,10 @@ CPPCHECK_FLAGS = --std=c11 --error-exitcode=1 --enable=all --force	\
 	--suppress=unusedStructMember					\
 	 -D CPPCHECK_6936
 
-cppcheck: $(PASST_SRCS) $(PASST_HEADERS) seccomp.h
+cppcheck: passt.cppcheck
+
+.PHONY: %.cppcheck
+%.cppcheck:
 	$(CPPCHECK) $(CPPCHECK_FLAGS) $(BASE_CPPFLAGS) $^
+
+passt.cppcheck: $(PASST_SRCS) $(PASST_HEADERS) seccomp.h
-- 
2.53.0