Index: configure.in
===================================================================
RCS file: /cvsroot/pure-data/pd/src/configure.in,v
retrieving revision 1.15
diff -u -w -r1.15 configure.in
--- configure.in	16 Aug 2005 04:06:28 -0000	1.15
+++ configure.in	20 Feb 2006 02:10:33 -0000
@@ -316,11 +316,11 @@
     EXTERNTARGET=pd_darwin
     if test x$jack == "xyes";
     then
-    	LDFLAGS=$LDFLAGS" -framework Jack"
+    	LDFLAGS=$LDFLAGS" -weak_framework Jack"
     fi
     if test x$jack == "xrun";
     then
-        LDFLAGS=$LDFLAGS" -framework Jack"
+        LDFLAGS=$LDFLAGS" -weak_framework Jack"
     fi
 fi
 
Index: makefile.in
===================================================================
RCS file: /cvsroot/pure-data/pd/src/makefile.in,v
retrieving revision 1.8
diff -u -w -r1.8 makefile.in
--- makefile.in	24 Jul 2005 19:41:14 -0000	1.8
+++ makefile.in	20 Feb 2006 02:10:33 -0000
@@ -85,9 +85,12 @@
 $(BIN_DIR)/pdreceive: u_pdreceive.c
 	$(CC) $(CFLAGS)  $(STRIPFLAG) -o $(BIN_DIR)/pdreceive u_pdreceive.c
 
+# MACOSX_DEPLOYMENT_TARGET=10.3 is necessary on Mac OS X to support weak
+# linking of frameworks.  Since its just a environment variable, it should be
+# safely ignored on other platforms.  <hans@at.or.at>
 $(PDEXEC): $(OBJ) 
-	cd ../obj;  $(CC) $(LDFLAGS) $(DBG_CFLAGS) -o $(PDEXEC) $(OBJ) \
-	$(LIB)
+	cd ../obj; MACOSX_DEPLOYMENT_TARGET=10.3 $(CC) $(LDFLAGS) $(DBG_CFLAGS) \
+		-o $(PDEXEC) $(OBJ) $(LIB)
 
 $(BIN_DIR)/pd-gui: $(GOBJ) $(GSRC)
 	cd ../obj; $(CC) $(INCLUDE) -o $(BIN_DIR)/$(GUINAME) $(GOBJ) \