diff --git a/Makefile b/Makefile
index ceb9d77d..7782c85f 100644
--- a/Makefile
+++ b/Makefile
@@ -62,6 +62,14 @@ SORELEASE?=.0#   Declare empty to leave out from library file name.
 MINISAT_CXXFLAGS = -I. -D __STDC_LIMIT_MACROS -D __STDC_FORMAT_MACROS -Wall -Wno-parentheses -Wextra
 MINISAT_LDFLAGS  = -Wall -lz
 
+ifeq (Darwin,$(findstring Darwin,$(shell uname)))
+	SHARED_LDFLAGS += -shared -Wl,-dylib_install_name,$(MINISAT_DLIB).$(SOMAJOR)
+	RELEASE_LDFLAGS +=
+else
+	SHARED_LDFLAGS += -shared -Wl,-soname,$(MINISAT_DLIB).$(SOMAJOR)
+	RELEASE_LDFLAGS += -static
+endif
+
 ECHO=@echo
 ifeq ($(VERB),)
 VERB=@
@@ -96,9 +104,9 @@ $(BUILD_DIR)/dynamic/%.o:			MINISAT_CXXFLAGS +=$(MINISAT_REL) $(MINISAT_FPIC)
 
 ## Build-type Link-flags:
 $(BUILD_DIR)/profile/bin/$(MINISAT):		MINISAT_LDFLAGS += -pg
-$(BUILD_DIR)/release/bin/$(MINISAT):		MINISAT_LDFLAGS += --static $(MINISAT_RELSYM)
+$(BUILD_DIR)/release/bin/$(MINISAT):		MINISAT_LDFLAGS += $(RELEASE_LDFLAGS) $(MINISAT_RELSYM)
 $(BUILD_DIR)/profile/bin/$(MINISAT_CORE):	MINISAT_LDFLAGS += -pg
-$(BUILD_DIR)/release/bin/$(MINISAT_CORE):	MINISAT_LDFLAGS += --static $(MINISAT_RELSYM)
+$(BUILD_DIR)/release/bin/$(MINISAT_CORE):	MINISAT_LDFLAGS += $(RELEASE_LDFLAGS) $(MINISAT_RELSYM)
 
 ## Executable dependencies
 $(BUILD_DIR)/release/bin/$(MINISAT):	 	$(BUILD_DIR)/release/minisat/simp/Main.o $(BUILD_DIR)/release/lib/$(MINISAT_SLIB)
@@ -162,7 +170,7 @@ $(BUILD_DIR)/dynamic/lib/$(MINISAT_DLIB).$(SOMAJOR).$(SOMINOR)$(SORELEASE)\
  $(BUILD_DIR)/dynamic/lib/$(MINISAT_DLIB):
 	$(ECHO) Linking Shared Library: $@
 	$(VERB) mkdir -p $(dir $@)
-	$(VERB) $(CXX) $(MINISAT_LDFLAGS) $(LDFLAGS) -o $@ -shared -Wl,-soname,$(MINISAT_DLIB).$(SOMAJOR) $^
+	$(VERB) $(CXX) $^ $(SHARED_LDFLAGS) $(MINISAT_LDFLAGS) $(LDFLAGS) -o $@
 	$(VERB) ln -sf $(MINISAT_DLIB).$(SOMAJOR).$(SOMINOR)$(SORELEASE) $(BUILD_DIR)/dynamic/lib/$(MINISAT_DLIB).$(SOMAJOR)
 	$(VERB) ln -sf $(MINISAT_DLIB).$(SOMAJOR) $(BUILD_DIR)/dynamic/lib/$(MINISAT_DLIB)
 
diff --git a/minisat/core/SolverTypes.h b/minisat/core/SolverTypes.h
index 89986d1e..a0b427f2 100644
--- a/minisat/core/SolverTypes.h
+++ b/minisat/core/SolverTypes.h
@@ -52,7 +52,7 @@ struct Lit {
     int     x;
 
     // Use this as a constructor:
-    friend Lit mkLit(Var var, bool sign = false);
+    //friend Lit mkLit(Var var, bool sign = false);
 
     bool operator == (Lit p) const { return x == p.x; }
     bool operator != (Lit p) const { return x != p.x; }
@@ -60,7 +60,7 @@ struct Lit {
 };
 
 
-inline  Lit  mkLit     (Var var, bool sign) { Lit p; p.x = var + var + (int)sign; return p; }
+inline  Lit  mkLit     (Var var, bool sign = false) { Lit p; p.x = var + var + (int)sign; return p; }
 inline  Lit  operator ~(Lit p)              { Lit q; q.x = p.x ^ 1; return q; }
 inline  Lit  operator ^(Lit p, bool b)      { Lit q; q.x = p.x ^ (unsigned int)b; return q; }
 inline  bool sign      (Lit p)              { return p.x & 1; }
diff --git a/minisat/utils/Options.h b/minisat/utils/Options.h
index 4e71a18c..7d2e83a8 100644
--- a/minisat/utils/Options.h
+++ b/minisat/utils/Options.h
@@ -282,15 +282,15 @@ class Int64Option : public Option
         if (range.begin == INT64_MIN)
             fprintf(stderr, "imin");
         else
-            fprintf(stderr, "%4"PRIi64, range.begin);
+            fprintf(stderr, "%4" PRIi64, range.begin);
 
         fprintf(stderr, " .. ");
         if (range.end == INT64_MAX)
             fprintf(stderr, "imax");
         else
-            fprintf(stderr, "%4"PRIi64, range.end);
+            fprintf(stderr, "%4" PRIi64, range.end);
 
-        fprintf(stderr, "] (default: %"PRIi64")\n", value);
+        fprintf(stderr, "] (default: %" PRIi64 ")\n", value);
         if (verbose){
             fprintf(stderr, "\n        %s\n", description);
             fprintf(stderr, "\n");
diff --git a/minisat/utils/System.cc b/minisat/utils/System.cc
index 21aa4ff4..b353bece 100644
--- a/minisat/utils/System.cc
+++ b/minisat/utils/System.cc
@@ -77,7 +77,7 @@ double Minisat::memUsed() {
     struct rusage ru;
     getrusage(RUSAGE_SELF, &ru);
     return (double)ru.ru_maxrss / 1024; }
-double Minisat::memUsedPeak() { return memUsed(); }
+double Minisat::memUsedPeak(bool strictlyPeak) { (void) strictlyPeak; return memUsed(); }
 
 
 #elif defined(__APPLE__)
@@ -87,11 +87,11 @@ double Minisat::memUsed() {
     malloc_statistics_t t;
     malloc_zone_statistics(NULL, &t);
     return (double)t.max_size_in_use / (1024*1024); }
-double Minisat::memUsedPeak() { return memUsed(); }
+double Minisat::memUsedPeak(bool strictlyPeak) { (void) strictlyPeak; return memUsed(); }
 
 #else
 double Minisat::memUsed()     { return 0; }
-double Minisat::memUsedPeak() { return 0; }
+double Minisat::memUsedPeak(bool strictlyPeak) { (void) strictlyPeak; return 0; }
 #endif