Export unused symbols in category-only files for when they are used in static libs to avoid linker warnings

1 files changed, 8 insertions, 2 deletions

diff --git a/Foundation/GTMNSDictionary+URLArguments.m b/Foundation/GTMNSDictionary+URLArguments.m
index 4799b2d..5a7aa5f 100644
--- a/Foundation/GTMNSDictionary+URLArguments.m
+++ b/Foundation/GTMNSDictionary+URLArguments.m
@@ -6,9 +6,9 @@
 //  Licensed under the Apache License, Version 2.0 (the "License"); you may not
 //  use this file except in compliance with the License.  You may obtain a copy
 //  of the License at
-// 
+//
 //  http://www.apache.org/licenses/LICENSE-2.0
-// 
+//
 //  Unless required by applicable law or agreed to in writing, software
 //  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 //  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
@@ -21,6 +21,12 @@
 #import "GTMMethodCheck.h"
 #import "GTMDefines.h"
 
+
+// Export a nonsense symbol to suppress a libtool warning when this is linked alone in a static lib.
+__attribute__((visibility("default")))
+    char GTMNSDictionaryURLArgumentsExportToSuppressLibToolWarning = 0;
+
+
 @implementation NSDictionary (GTMNSDictionaryURLArgumentsAdditions)
 
 GTM_METHOD_CHECK(NSString, gtm_stringByEscapingForURLArgument);