[lua] updated configure script yet again

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10218 626c5289-ae23-0410-ae9c-e8d60b6d4f22

CHANGES.current

@@ -1,6 +1,11 @@
 Version 1.3.34 (in progress)
 ============================
 
+01/24/2008: mgossage
+	    More updates to the configure script for detecting lua.
+	    Also looks in /usr/include/lua*
+	    Also changed typemaps.i not to check for NULL before freeing a pointer
+
 01/21/2008: wsfulton
 	    [Python] For STL containers, SWIG no longer attempts to convert from one
             STL container to another, eg from std::vector<int> to std::vector<double>

Lib/lua/typemaps.i

@@ -172,16 +172,25 @@ void SWIG_write_NAME_num_array(lua_State* L,TYPE *array,int size);
 int SWIG_read_NAME_num_array(lua_State* L,int index,TYPE *array,int size);
 
 */
-%{
 
-#ifdef __cplusplus	/* generic alloc/dealloc fns*/
+/* Reported that you don't need to check for NULL for delete & free
+There probably is some compiler that its not true for, so the code is left here just in case.
+#ifdef __cplusplus	
 #define SWIG_ALLOC_ARRAY(TYPE,LEN) 	new TYPE[LEN]
 #define SWIG_FREE_ARRAY(PTR)		if(PTR){delete[] PTR;}
 #else
 #define SWIG_ALLOC_ARRAY(TYPE,LEN) 	(TYPE *)malloc(LEN*sizeof(TYPE))
 #define SWIG_FREE_ARRAY(PTR)		if(PTR){free(PTR);}
 #endif
-
+*/
+%{
+#ifdef __cplusplus	/* generic alloc/dealloc fns*/
+#define SWIG_ALLOC_ARRAY(TYPE,LEN) 	new TYPE[LEN]
+#define SWIG_FREE_ARRAY(PTR)		delete[] PTR;
+#else
+#define SWIG_ALLOC_ARRAY(TYPE,LEN) 	(TYPE *)malloc(LEN*sizeof(TYPE))
+#define SWIG_FREE_ARRAY(PTR)		free(PTR);
+#endif
 /* counting the size of arrays:*/
 int SWIG_itable_size(lua_State* L, int index)
 {

Lib/swiginit.swg

@@ -55,7 +55,7 @@ SWIGRUNTIME void
 SWIG_InitializeModule(void *clientdata) {
   size_t i;
   swig_module_info *module_head, *iter;
-  int found;
+  int found, init;
 
   clientdata = clientdata;
 
@@ -65,6 +65,9 @@ SWIG_InitializeModule(void *clientdata) {
     swig_module.type_initial = swig_type_initial;
     swig_module.cast_initial = swig_cast_initial;
     swig_module.next = &swig_module;
+    init = 1;
+  } else {
+    init = 0;
   }
 
   /* Try and load any already created modules */
@@ -93,6 +96,12 @@ SWIG_InitializeModule(void *clientdata) {
     module_head->next = &swig_module;
   }
 
+  /* When multiple interpeters are used, a module could have already been initialized in
+     a different interpreter, but not yet have a pointer in this interpreter.
+     In this case, we do not want to continue adding types... everything should be
+     set up already */
+  if (init == 0) return;
+
   /* Now work on filling in swig_module.types */
 #ifdef SWIGRUNTIME_DEBUG
   printf("SWIG_InitializeModule: size %d\n", swig_module.size);

configure.in

@@ -1649,17 +1649,36 @@ fi
 if test -n "$LUAINCLUDE"; then
   AC_CHECK_FILE($LUAINCLUDE/lua.h,[LUAFLAGS="$ISYSTEM$LUAINCLUDE"],[LUABIN=])
 else
-  AC_CHECK_HEADER(lua.h,[LUAFLAGS=""],[LUABIN=])
+  LUA_OK="1"
+  AC_CHECK_HEADER(lua.h,[LUAFLAGS=""],[LUA_OK=""])
+  # if we didn't get it, going to have to look elsewhere (the hard way)
+  if test -z "$LUA_OK"; then
+    AC_MSG_CHECKING(for lua.h in other locations)
+    # note: ubuntu seems to like /usr/include/lua5.1/lua.h
+    dirs="/usr/include/lua* /usr/local/include"
+    for i in $dirs; do
+      #echo "$i"
+      if test -r $i/lua.h; then
+        AC_MSG_RESULT($i/lua.h)
+	LUAFLAGS="$ISYSTEM$i"
+	break;
+      fi
+    done
+    if test -z "$LUAFLAGS"; then
+      AC_MSG_RESULT(not found)
+      LUABIN="" # clear the bin
+    fi
+  fi
 fi
 
 # look for the library files & set LUALINK accordingly
 # will clear LUABIN if not present
 lua_save_LIBS=$LIBS # the code seems to disrupt LIBS, so saving
 	
-if test -z "$LUALIB"; then
+if test -n "$LUALIB"; then
-  AC_SEARCH_LIBS(lua_close, [lua lua51 lua5.1 lua50 lua5.0], [LUALINK="-l$ac_lib"],[LUABIN=])
-else
   AC_CHECK_FILE($LUALIB/liblua.a,[LUALINK="-L$LUALIB -llua"],[LUABIN=])
+else
+  AC_SEARCH_LIBS(lua_close, [lua lua51 lua5.1 lua50 lua5.0], [LUALINK="-l$ac_lib"],[LUABIN=])
 fi
 
 # adding lualib for lua 5.0