cppcheck for Linux and OI

Makefile

@@ -57,18 +57,18 @@ endif
 #
 OS := $(shell uname -s)
 ifeq ($(UNAME_S),Linux)
+	# installed by system and in PATH
+	CPPCHECK := cppcheck
 	DBG_REL +=
 endif
 # OpenIndiana and flavours
 ifeq ($(UNAME_S),SunOS)
+	# local installation
+	CPPCHECK := $(HOME)/devl/cppcheck/bin/cppcheck
 	DBG_REL +=
 endif
 
 
-
-# CPPCHECK = $(HOME)/devl/cppcheck/bin/cppcheck
-CPPCHECK := cppcheck
-
 SRC_DIR := src
 OBJ_DIR := obj
 SRC := $(wildcard $(SRC_DIR)/*.cpp)
@@ -119,8 +119,8 @@ $(APP): $(OBJS)
 $(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
 	$(CXX) $(CXXFLAGS) -o $@  -c $<
 
-DIRS:
-	mkdir  -p ./obj ./bin
+DIRS: obj bin
+	mkdir  -p obj bin
 
 cppcheck.out: $(SRC)
 	$(info output to cppcheck.out)