small fixes:

C/atomic.c

@@ -2771,12 +2771,11 @@ void Yap_InitAtomPreds(void) {
   Yap_InitCPred("atomics_to_string", 3, atomics_to_string3, 0);
   Yap_InitCPred("get_string_code", 3, get_string_code3, 0);
 
-  Yap_InitCPred("downcase_text_to_atom", 2, downcase_text_to_atom, 0);
     Yap_InitCPred("downcase_atom", 2, downcase_text_to_atom, 0);
-  Yap_InitCPred("upcase_text_to_atom", 2, upcase_text_to_atom, 0);
   Yap_InitCPred("upcase_atom", 2, upcase_text_to_atom, 0);
-  Yap_InitCPred("text_to_string", 2, downcase_text_to_string, 0);
+
-  Yap_InitCPred("text_to_atom", 2, downcase_text_to_string, 0);
+  Yap_InitCPred("downcase_text_to_atom", 2, downcase_text_to_atom, 0);
+  Yap_InitCPred("upcase_text_to_atom", 2, upcase_text_to_atom, 0);
   Yap_InitCPred("downcase_text_to_string", 2, downcase_text_to_string, 0);
   Yap_InitCPred("upcase_text_to_string", 2, upcase_text_to_string, 0);
   Yap_InitCPred("downcase_text_to_codes", 2, downcase_text_to_codes, 0);

C/globals.c

@@ -329,15 +329,16 @@ CELL *Yap_GetFromArena(Term *arenap, UInt cells, UInt arity) {
 }
 }
 
-static void CloseArena(cell_space_t *region, Term *oldArenaP,
+static Term CloseArena(cell_space_t *region, Term arena,
                        UInt old_size USES_REGS) {
   UInt new_size;
 
   if (HR == region->oH)
-    return;
+    return 0;
-  new_size = old_size - (HR - RepAppl(*oldArenaP));
+  new_size = old_size - (HR - RepAppl(arena));
-  *oldArenaP = CreateNewArena(HR, new_size);
+  arena = CreateNewArena(HR, new_size);
   exit_cell_space( region );
+  return arena;
 }
 
 static inline void clean_dirty_tr(tr_fr_ptr TR0 USES_REGS) {
@@ -670,12 +671,12 @@ static Term CopyTermToArena(Term t, Term arena, bool share, bool copy_att_vars,
                                          Hi PASS_REGS)) < 0) {
                 goto error_handler;
             }
-            CloseArena(&cspace, newarena, old_size PASS_REGS);
+            *newarena = CloseArena(&cspace, arena, old_size PASS_REGS);
             return Hi[0];
         }
 #endif
         if (share && VarOfTerm(t) > ArenaPt(arena)) {
-            CloseArena(&cspace, newarena, old_size PASS_REGS);
+            *newarena = CloseArena(&cspace, arena, old_size PASS_REGS);
             return t;
         }
         tn = MkVarTerm();
@@ -683,7 +684,7 @@ static Term CopyTermToArena(Term t, Term arena, bool share, bool copy_att_vars,
             res = -1;
             goto error_handler;
         }
-        CloseArena(&cspace, newarena, old_size PASS_REGS);
+	*newarena = CloseArena(&cspace, arena, old_size PASS_REGS);
         return tn;
     } else if (IsAtomOrIntTerm(t)) {
         return t;
@@ -705,7 +706,7 @@ static Term CopyTermToArena(Term t, Term arena, bool share, bool copy_att_vars,
                                      Hi PASS_REGS)) < 0) {
             goto error_handler;
         }
-        CloseArena(&cspace, newarena, old_size PASS_REGS);
+        *newarena = CloseArena(&cspace, arena, old_size PASS_REGS);
         return tf;
     } else {
         Functor f;
@@ -726,7 +727,7 @@ static Term CopyTermToArena(Term t, Term arena, bool share, bool copy_att_vars,
         if (IsExtensionFunctor(f)) {
             switch ((CELL) f) {
                 case (CELL) FunctorDBRef:
-                    CloseArena(&cspace, newarena, old_size PASS_REGS);
+                    *newarena = CloseArena(&cspace, arena, old_size PASS_REGS);
                     return t;
                 case (CELL) FunctorLongInt:
                     if (HR > ASP - (MIN_ARENA_SIZE + 3)) {
@@ -785,7 +786,7 @@ static Term CopyTermToArena(Term t, Term arena, bool share, bool copy_att_vars,
                 goto error_handler;
             }
         }
-        CloseArena(&cspace, newarena, old_size PASS_REGS);
+        *newarena = CloseArena(&cspace, arena, old_size PASS_REGS);
         return tf;
     }
     error_handler:
@@ -858,7 +859,7 @@ restart:
       HB0[i] = init;
     }
   }
-  CloseArena(&cells, newarena, ArenaSz(arena) PASS_REGS);
+  *newarena = CloseArena(&cells, arena, ArenaSz(arena) PASS_REGS);
   return tf;
 }
 
@@ -1683,7 +1684,7 @@ static Int p_nb_queue_enqueue(USES_REGS1) {
   RESET_VARIABLE(HR);
   qd[QUEUE_TAIL] = (CELL)HR;
   HR++;
-  CloseArena(&cspace, qd + QUEUE_ARENA, old_sz PASS_REGS);
+  qd[QUEUE_ARENA] = CloseArena(&cspace, qd[ QUEUE_ARENA ], old_sz PASS_REGS);
   return TRUE;
 }
 
@@ -1707,7 +1708,7 @@ static Int p_nb_queue_dequeue(USES_REGS1) {
   /* garbage collection ? */
   enter_cell_space(&cspace);
   qd[QUEUE_SIZE] = Global_MkIntegerTerm(qsz - 1);
-  CloseArena(&cspace, &arena, old_sz PASS_REGS);
+  qd[QUEUE_ARENA] = CloseArena(&cspace, arena, old_sz PASS_REGS);
   return Yap_unify(out, ARG2);
 }
 
@@ -1957,7 +1958,7 @@ restart:
     old_sz = ArenaSz(arena);
     HR = HB = ArenaPt(arena);
     qd[HEAP_MAX] = Global_MkIntegerTerm(hmsize);
-    CloseArena(&cspace, qd + HEAP_ARENA, old_sz PASS_REGS);
+    qd[HEAP_ARENA] = CloseArena(&cspace, arena, old_sz PASS_REGS);
     goto restart;
   }
   arena = qd[HEAP_ARENA];
@@ -2005,7 +2006,7 @@ restart:
   pt[2 * hsize + 1] = to;
   PushHeap(pt, hsize);
   qd[HEAP_SIZE] = Global_MkIntegerTerm(hsize + 1);
-  CloseArena(&cspace, qd + HEAP_ARENA, old_sz PASS_REGS);
+  qd[HEAP_ARENA] = CloseArena(&cspace, qd[ HEAP_ARENA ], old_sz PASS_REGS);
   return TRUE;
 }
 
@@ -2362,7 +2363,7 @@ cell_space_t cspace;
   pt = qd + HEAP_START;
   PushBeam(pt, pt + 2 * hmsize, hsize, key, to);
   qd[HEAP_SIZE] = Global_MkIntegerTerm(hsize + 1);
-  CloseArena(&cspace, qd + HEAP_ARENA, old_sz PASS_REGS);
+  qd[HEAP_ARENA] = CloseArena(&cspace, qd[ HEAP_ARENA ], old_sz PASS_REGS);
   return TRUE;
 }
 
@@ -2385,7 +2386,7 @@ static Int p_nb_beam_del(USES_REGS1) {
   /* garbage collection ? */
  enter_cell_space(&cspace);
   qd[HEAP_SIZE] = Global_MkIntegerTerm(qsz - 1);
-  CloseArena(&cspace, &arena, old_sz PASS_REGS);
+  qd[ HEAP_ARENA] = CloseArena(&cspace, arena, old_sz PASS_REGS);
   tk = qd[HEAP_START];
   tv = DelBeamMin(qd + HEAP_START,
                   qd + (HEAP_START + 2 * IntegerOfTerm(qd[HEAP_MAX])), qsz);

CMakeLists.txt

@@ -680,8 +680,12 @@ ${GMP_LIBRARIES}
 ${READLINE_LIBRARIES}
 ${ANDROID_LIBRARIES}
 ${WINDLLS}
+)
+if (PYTHON_LIBRARIES)
+  target_link_libraries(libYap
   ${PYTHON_LIBRARIES}
  )
+endif()
 
 set_target_properties(libYap
 PROPERTIES OUTPUT_NAME Yap
@@ -862,6 +866,7 @@ include(UseJava)
 #
 #macro_optional_find_package(JNI ON)
 #   JNI_INCLUDE_DIRS      = the include dirs to use
+
 #   JNI_LIBRARIES         = the libraries to use
 #   JNI_FOUND             = TRUE if JNI headers and libraries were found.
 #   JAVA_AWT_LIBRARY      = the path to the jawt library

CXX/CMakeLists.txt

@@ -15,8 +15,8 @@ if ( WIN32 OR ANDROID)
   set_property( DIRECTORY  APPEND PROPERTY COMPILE_DEFINITIONS  "_YAP_NOT_INSTALLED_=1;HAVE_CONFIG_H=1;_GNU_SOURCE;YAP_KERNEL=1" )
 else()
   add_library(YAP++ ${CXX_SOURCES} )
-  if (WITH_PYTHON)
+  if (WITH_PYTHON AND PYTHON_LIBRARIES)
-    target_link_libraries(YAP++ Py4YAP )
+    target_link_libraries(YAP++ ${PYTHON_LIBRARIES} )
   endif()
   target_link_libraries(YAP++ ${CMAKE_DL_LIBS} libYap)
   

pl/bootlists.yap

@@ -69,20 +69,34 @@ lists:append([H|T], L, [H|R]) :-
        lists:append(T, L, R).
 
 
-:- set_prolog_flag(source, true). % :- no_source.
-
 %   lists:delete(List, Elem, Residue)
 %   is true when List is a list, in which Elem may or may not occur, and
 %   Residue is a copy of List with all elements identical to Elem lists:deleted.
 
 /** @pred delete(+ _List_, ? _Element_, ? _Residue_)
 
-:- set_prolog_flag(source, false). % disable source.
+True when  _List_ is a list, in which  _Element_ may or may not
+occur, and  _Residue_ is a copy of  _List_ with all elements
+identical to  _Element_ deleted.
+
+*/
+lists:delete([], _, []).
+lists:delete([Head|List], Elem, Residue) :-
+    ( Head \= Elem
+    ->
+    lists:delete(List, Elem, Residue)
+    ;
+    Residue = [Head|MoreResidue],
+    lists:delete(List, Elem, MoreResidue)
+    ).
+
 
 
 
 %   length of a list.
 
+:- set_prolog_flag(source, false). % disable source.
+
 /** @pred  length(? _L_,? _S_)
 
 

pl/messages.yap

@@ -254,6 +254,8 @@ compose_message(style_check(What,FILE,Line,Clause), Level)-->
   main_message(style_check(What,FILE,Line,Clause) , Level, LC ).
 compose_message(yes, _Level) --> !,
   [  'yes'- []  ].
+compose_message(false, _Level) --> !,
+  [  'no'- []  ].
 compose_message(Throw, _Level) -->
     !,
     [ 'UNHANDLED EXCEPTION - message ~w unknown' - [Throw] ].