diff -up Singular-3-1-7/Singular/Makefile.in.undefined Singular-3-1-7/Singular/Makefile.in
--- Singular-3-1-7/Singular/Makefile.in.undefined	2016-02-15 21:28:04.755898679 -0700
+++ Singular-3-1-7/Singular/Makefile.in	2016-02-15 21:31:11.347859890 -0700
@@ -144,7 +144,7 @@ LIBSINGULAR_LIBS =-lsingfac -lsingcf -ln
 
 SO_SUFFIX = so
 
-LIBSINGULAR_FLAGS = -shared
+LIBSINGULAR_FLAGS = -shared -Wl,--no-undefined
 LIBSINGULAR_LD = $(CXX)
 
 # correct suffix for dynamic linking
diff -up Singular-3-1-7/Singular/misc_ip.cc.undefined Singular-3-1-7/Singular/misc_ip.cc
--- Singular-3-1-7/Singular/misc_ip.cc.undefined	2014-08-06 09:59:15.000000000 -0600
+++ Singular-3-1-7/Singular/misc_ip.cc	2016-02-15 21:31:11.349859729 -0700
@@ -1269,7 +1269,6 @@ void siInit(char *name)
   errorreported = 0;
 }
 
-#ifdef LIBSINGULAR
 #ifdef HAVE_FACTORY
 // the init routines of factory need mmInit
 int mmInit( void )
@@ -1277,4 +1276,3 @@ int mmInit( void )
   return 1;
 }
 #endif
-#endif
diff -up Singular-3-1-7/Singular/tesths.cc.undefined Singular-3-1-7/Singular/tesths.cc
--- Singular-3-1-7/Singular/tesths.cc.undefined	2014-08-06 09:59:15.000000000 -0600
+++ Singular-3-1-7/Singular/tesths.cc	2016-02-15 21:32:47.063145511 -0700
@@ -51,23 +51,6 @@
 extern int siInit(char *);
 
 #if ! defined(LIBSINGULAR)
-static int mmInit2( void )
-{
-#if defined(OMALLOC_USES_MALLOC) || defined(X_OMALLOC)
-    /* in mmstd.c, for some architectures freeSize() unconditionally uses the *system* free() */
-    /* sage ticket 5344: http://trac.sagemath.org/sage_trac/ticket/5344 */
-    /* do not rely on the default in Singular as libsingular may be different */
-    mp_set_memory_functions(omMallocFunc,omReallocSizeFunc,omFreeSizeFunc);
-#else
-    mp_set_memory_functions(malloc,reallocSize,freeSize);
-#endif
-  return 1;
-}
-int mmInit( void )
-{
-  return mmInit2();
-}
-
 /*0 implementation*/
 int main(          /* main entry to Singular */
     int argc,      /* number of parameter */