diff --git a/Makefile b/Makefile
index 22ddde0..b1b7770 100644
--- a/Makefile
+++ b/Makefile
@@ -1,18 +1,54 @@
-CC=g++
+CXX=		g++
+CXXFLAGS=	-g -O3 -msse4.2 -mpopcnt -fomit-frame-pointer -Winline -Wall
+CPPFLAGS=
+INCLUDES=
+OBJS=		Output.o CommandLines.o Process_Read.o Assembly.o kmer.o Hash_Table.o \
+			POA.o Correct.o Levenshtein_distance.o edlib.o Overlaps.o
+EXE=		ccs_assembly
+LIBS=		-lz -lpthread -lm
 
-CFLAGS = -w -c -msse4.2 -mpopcnt -fomit-frame-pointer -Winline -O3 -lz
-LDFLAGS = -lm -lz -lpthread -O3 -mpopcnt -msse4.2 -lz -w
+ifneq ($(asan),)
+	CXXFLAGS+=-fsanitize=address
+	LIBS+=-fsanitize=address
+endif
 
-SOURCES = main.cpp Output.cpp CommandLines.cpp Process_Read.cpp Assembly.cpp kmer.cpp Hash_Table.cpp POA.cpp Correct.cpp Levenshtein_distance.cpp edlib.cpp Overlaps.cpp
-OBJECTS = $(SOURCES:.c=.o)
-EXECUTABLE = ccs_assembly
+.SUFFIXES:.cpp .o
+.PHONY:all clean depend
 
+.cpp.o:
+		$(CXX) -c $(CXXFLAGS) $(CPPFLAGS) $(INCLUDES) $< -o $@
 
-all: $(SOURCES) $(EXECUTABLE)
-$(EXECUTABLE): $(OBJECTS)
-	$(CC) $(OBJECTS) -o $@ $(LDFLAGS) 
+all:$(EXE)
+
+$(EXE):$(OBJS) main.o
+		$(CXX) $(CXXFLAGS) $^ -o $@ $(LIBS)
 
-.c.o:
-	$(CC) $(CFLAGS) $< -o $@ 
 clean:
-	rm -f *.o *~ \#* ccs_assembly
\ No newline at end of file
+		rm -fr gmon.out *.o a.out $(EXE) *~ *.a *.dSYM
+
+depend:
+		(LC_ALL=C; export LC_ALL; makedepend -Y -- $(CPPFLAGS) $(DFLAGS) -- *.cpp)
+
+# DO NOT DELETE
+
+Assembly.o: Assembly.h Process_Read.h kseq.h Overlaps.h kvec.h kdq.h
+Assembly.o: CommandLines.h kmer.h Hash_Table.h khash.h POA.h Correct.h
+Assembly.o: Levenshtein_distance.h Output.h
+CommandLines.o: CommandLines.h ketopt.h
+Correct.o: Correct.h Hash_Table.h khash.h kmer.h Process_Read.h kseq.h
+Correct.o: Overlaps.h kvec.h kdq.h CommandLines.h Levenshtein_distance.h
+Correct.o: POA.h edlib.h Assembly.h
+Hash_Table.o: Hash_Table.h khash.h kmer.h Process_Read.h kseq.h Overlaps.h
+Hash_Table.o: kvec.h kdq.h CommandLines.h Correct.h Levenshtein_distance.h
+Hash_Table.o: POA.h ksort.h
+Levenshtein_distance.o: Levenshtein_distance.h
+Output.o: Output.h CommandLines.h
+Overlaps.o: Overlaps.h kvec.h kdq.h ksort.h Process_Read.h kseq.h
+Overlaps.o: CommandLines.h
+POA.o: POA.h Hash_Table.h khash.h kmer.h Process_Read.h kseq.h Overlaps.h
+POA.o: kvec.h kdq.h CommandLines.h Correct.h Levenshtein_distance.h
+Process_Read.o: Process_Read.h kseq.h Overlaps.h kvec.h kdq.h CommandLines.h
+edlib.o: edlib.h
+kmer.o: kmer.h Process_Read.h kseq.h Overlaps.h kvec.h kdq.h CommandLines.h
+main.o: CommandLines.h Process_Read.h kseq.h Overlaps.h kvec.h kdq.h
+main.o: Assembly.h Levenshtein_distance.h edlib.h
diff --git a/Overlaps.cpp b/Overlaps.cpp
index 38ff861..3aaf903 100644
--- a/Overlaps.cpp
+++ b/Overlaps.cpp
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#define __STDC_LIMIT_MACROS
 #include <stdint.h>
 #include "Overlaps.h"
 #include "ksort.h"
@@ -8404,4 +8405,4 @@ char* output_file_name, long long bubble_dist, int read_graph, int write)
     
     asg_destroy(sg);
     free(coverage_cut);
-}
\ No newline at end of file
+}
diff --git a/kseq.h b/kseq.h
index 6dea15b..4360f82 100644
--- a/kseq.h
+++ b/kseq.h
@@ -37,6 +37,14 @@
 #define KS_SEP_LINE  2 // line separator: "\n" (Unix) or "\r\n" (Windows)
 #define KS_SEP_MAX   2
 
+#ifndef klib_unused
+#if (defined __clang__ && __clang_major__ >= 3) || (defined __GNUC__ && __GNUC__ >= 3)
+#define klib_unused __attribute__ ((__unused__))
+#else
+#define klib_unused
+#endif
+#endif /* klib_unused */
+
 #define __KS_TYPE(type_t)						\
 	typedef struct __kstream_t {				\
 		unsigned char *buf;						\
@@ -65,7 +73,7 @@
 	}
 
 #define __KS_GETC(__read, __bufsize)						\
-	static inline int ks_getc(kstream_t *ks)				\
+	static inline klib_unused int ks_getc(kstream_t *ks)	\
 	{														\
 		if (ks_err(ks)) return -3;							\
 		if (ks->is_eof && ks->begin >= ks->end) return -1;	\
@@ -231,7 +239,7 @@ typedef struct __kstring_t {
 	__KSEQ_BASIC(SCOPE, type_t)					\
 	__KSEQ_READ(SCOPE)
 
-#define KSEQ_INIT(type_t, __read) KSEQ_INIT2(static, type_t, __read)
+#define KSEQ_INIT(type_t, __read) KSEQ_INIT2(static klib_unused, type_t, __read)
 
 #define KSEQ_DECLARE(type_t) \
 	__KS_TYPE(type_t) \