Build hiredis only for 'make test' rule

Makefile

@@ -17,25 +17,26 @@ else
 	PKGCONFIGDIR = $(LIBDIR)/pkgconfig
 endif
 
+HIREDIS_VERSION := $(shell git submodule status deps/hiredis | grep -oP "\(v[0-9]+\.[0-9]+\.[0-9]-[0-9]*-[a-z0-9]*\)" || true)
 LIBRDB_VERSION = $(shell grep -oP '(?<=LIBRDB_VERSION_STRING ")[0-9]+\.[0-9]+\.[0-9]+' ./src/lib/version.h)
 export LIBRDB_VERSION
 
 # ------------------------- ALL --------------------------------------
 
 all:
-	$(MAKE) -C deps -f Makefile all
-	$(MAKE) -C src/lib -f Makefile all
-	$(MAKE) -C src/ext -f Makefile all
-	$(MAKE) -C src/cli -f Makefile all
-	$(MAKE) -C examples -f Makefile all
+	$(MAKE) -C deps  all
+	$(MAKE) -C src/lib  all
+	$(MAKE) -C src/ext  all
+	$(MAKE) -C src/cli  all
+	$(MAKE) -C examples  all
 
 clean:
-	$(MAKE) -C deps -f Makefile clean
-	$(MAKE) -C src/lib -f Makefile clean
-	$(MAKE) -C src/ext -f Makefile clean
-	$(MAKE) -C src/cli -f Makefile clean
-	$(MAKE) -C examples -f Makefile clean
-	$(MAKE) -C test -f Makefile clean
+	$(MAKE) -C deps  clean
+	$(MAKE) -C src/lib  clean
+	$(MAKE) -C src/ext  clean
+	$(MAKE) -C src/cli  clean
+	$(MAKE) -C examples  clean
+	$(MAKE) -C test  clean
 	rm -f librdb.pc
 	rm -f librdb-ext.pc
 
@@ -50,9 +51,15 @@ debug:
 	OPTIMIZATION="-O0" LIBRDB_DEBUG=1 $(MAKE)
 
 # ------------------------- TEST --------------------------------------
-
-build_test: all
-	$(MAKE) -C test -f Makefile all
+hiredis_submodule:
+	@if [ -z "$(HIREDIS_VERSION)" ]; then \
+		echo "Submodule 'hiredis' is not up to date. Run 'git submodule update --init' to update it."; \
+		exit 1; \
+	fi
+
+build_test: all hiredis_submodule
+	$(MAKE) -C deps all
+	$(MAKE) -C test  all
 
 test: build_test
 	./runtests

deps/Makefile

@@ -1,10 +1,11 @@
 all:
-	$(MAKE) -C redis -f Makefile all
-	$(MAKE) -C hiredis -f Makefile all
+	$(MAKE) -C redis all
 
 clean:
-	$(MAKE) -C redis -f Makefile clean
-	$(MAKE) -C hiredis -f Makefile all
+	$(MAKE) -C redis clean
+	$(MAKE) -C hiredis all
 
+test:
+	$(MAKE) -C hiredis all
 
-.PHONY: all clean
+.PHONY: all clean test