build: secp256k1 as a subdir, since it's required

src/Makefile.am

@@ -1,3 +1,4 @@
+DIST_SUBDIRS = secp256k1
 AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS)
 
 
@@ -32,7 +33,7 @@ LIBBITCOINQT=qt/libbitcoinqt.a
 LIBSECP256K1=secp256k1/libsecp256k1.la
 
 $(LIBSECP256K1): $(wildcard secp256k1/src/*) $(wildcard secp256k1/include/*)
-	@$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
+	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
 
 # Make is not made aware of per-object dependencies to avoid limiting building parallelization
 # But to build the less dependent modules first, we manually select their order here:
@@ -334,11 +335,11 @@ CLEANFILES = leveldb/libleveldb.a leveldb/libmemenv.a *.gcda *.gcno
 
 DISTCLEANFILES = obj/build.h
 
-EXTRA_DIST = leveldb secp256k1
+EXTRA_DIST = leveldb
 
 clean-local:
 	-$(MAKE) -C leveldb clean
-	-$(MAKE) -C secp256k1 clean 2>/dev/null
+	-$(MAKE) -C secp256k1 clean
 	rm -f leveldb/*/*.gcno leveldb/helpers/memenv/*.gcno
 	-rm -f config.h
 

src/Makefile.test.include

@@ -104,6 +104,9 @@ bitcoin_test_check: $(TEST_BINARY) FORCE
 bitcoin_test_clean : FORCE
 	rm -f $(CLEAN_BITCOIN_TEST) $(test_test_bitcoin_OBJECTS) $(TEST_BINARY)
 
+check-local:
+	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C secp256k1 check
+
 %.json.h: %.json
 	@$(MKDIR_P) $(@D)
 	@echo "namespace json_tests{" > $@