diff -aur minisat/core/SolverTypes.h minisat.clang/core/SolverTypes.h
--- minisat/core/SolverTypes.h	2010-07-10 18:07:36.000000000 +0200
+++ minisat.clang/core/SolverTypes.h	2016-05-13 12:14:50.759671959 +0200
@@ -47,7 +47,7 @@
     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; }
@@ -55,7 +55,7 @@
 };
 
 
-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 -aur minisat/utils/Options.h minisat.clang/utils/Options.h
--- minisat/utils/Options.h	2010-07-10 18:07:36.000000000 +0200
+++ minisat.clang/utils/Options.h	2016-05-13 12:14:50.759671959 +0200
@@ -282,15 +282,15 @@
         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");
Only in minisat.clang/utils: Options.o
Only in minisat.clang/utils: System.o