enable objc modules for using @import instead of #import

configure.ac

@@ -50,6 +50,7 @@ case "$target" in
                 LIBS="$LIBS -mmacosx-version-min=10.6 -framework Foundation"
                 CXXFLAGS="$CXXFLAGS -mmacosx-version-min=10.6"
                 CFLAGS="$CFLAGS -mmacosx-version-min=10.6"
+                OBJCFLAGS="$OBJCFLAGS  -fmodules"
                 build_apple=yes
         ;;
         i386-apple*|armv6-apple*|armv7-apple*|armv7s-apple*|arm64-apple*|aarch64-apple*)

src/backgroundtask.m

@@ -67,7 +67,7 @@ void belle_sip_end_background_task(unsigned long id){
 
 #else
 /*mac*/
-#import <Foundation/NSProcessinfo.h>
+@import Foundation;
 
 static unsigned long dummy_id=0;
 static id activity_id=0;

src/belle_sip_object.c

@@ -76,7 +76,9 @@ void belle_sip_object_dump_active_objects(void){
 		belle_sip_message("List of leaked objects:");
 		for(elem=all_objects;elem!=NULL;elem=elem->next){
 			belle_sip_object_t *obj=(belle_sip_object_t*)elem->data;
-			belle_sip_message("%s(%p) ref=%i",obj->vptr->type_name,obj,obj->ref);
+			char* content= belle_sip_object_to_string(obj);
+			belle_sip_message("%s(%p) ref=%i, content [%10s...]",obj->vptr->type_name,obj,obj->ref,content);
+			belle_sip_free(content);
 		}
 	}else belle_sip_message("No objects leaked.");
 }