静态库是.o文件的合集, 静态库合并就是将静态库的.o合并, 可以实现的工具

• ar, 静态库的查看、拆分、合并
• libtool, xcode提供的静态库操作工具

---

1. 在staticLib文件夹里准备好两个.a静态库

2. 目录结构

   .
   ├── libAFNetworking.a
   └── libSDWebImage.a

1. 执行命令

   libtool \
   -static \
   -o \
   libMerge.a \
   libAFNetworking.a \
   libSDWebImage.a

   • 参数说明

     • libMerge.a是合并后生成静态库的名称
     • libAFNetworking.a和libSDWebImage.a是将要被合并的两个静态库

   • 生成最终静态库

     .
     ├── libAFNetworking.a
     ├── libMerge.a
     └── libSDWebImage.a

2. 利用ar来验证下静态库文件是否包含两个静态库的.o文件

   ar -t /Users/shenyj/Documents/CodeForTest/staticLibMerge/staticLib/libMerge.a

   输出结果

   ❯ ar -t /Users/shenyj/Documents/CodeForTest/staticLibMerge/staticLib/libMerge.a
   __.SYMDEF
   AFHTTPSessionManager.o
   AFNetworking-dummy.o
   AFNetworkReachabilityManager.o
   AFSecurityPolicy.o
   AFURLRequestSerialization.o
   AFURLResponseSerialization.o
   AFURLSessionManager.o
   NSBezierPath+SDRoundedCorners.o
   NSButton+WebCache.o
   NSData+ImageContentType.o
   NSImage+Compatibility.o
   SDAnimatedImage.o
   SDAnimatedImagePlayer.o
   SDAnimatedImageRep.o
   SDAnimatedImageView+WebCache.o
   SDAnimatedImageView.o
   SDAssociatedObject.o
   SDAsyncBlockOperation.o
   SDDeviceHelper.o
   SDDiskCache.o
   SDDisplayLink.o
   SDFileAttributeHelper.o
   SDGraphicsImageRenderer.o
   SDImageAPNGCoder.o
   SDImageAssetManager.o
   SDImageAWebPCoder.o
   SDImageCache.o
   SDImageCacheConfig.o
   SDImageCacheDefine.o
   SDImageCachesManager.o
   SDImageCachesManagerOperation.o
   SDImageCoder.o
   SDImageCoderHelper.o
   SDImageCodersManager.o
   SDImageFrame.o
   SDImageGIFCoder.o
   SDImageGraphics.o
   SDImageHEICCoder.o
   SDImageIOAnimatedCoder.o
   SDImageIOCoder.o
   SDImageLoader.o
   SDImageLoadersManager.o
   SDImageTransformer.o
   SDInternalMacros.o
   SDMemoryCache.o
   SDWeakProxy.o
   SDWebImage-dummy.o
   SDWebImageCacheKeyFilter.o
   SDWebImageCacheSerializer.o
   SDWebImageCompat.o
   SDWebImageDefine.o
   SDWebImageDownloader.o
   SDWebImageDownloaderConfig.o
   SDWebImageDownloaderDecryptor.o
   SDWebImageDownloaderOperation.o
   SDWebImageDownloaderRequestModifier.o
   SDWebImageDownloaderResponseModifier.o
   SDWebImageError.o
   SDWebImageIndicator.o
   SDWebImageManager.o
   SDWebImageOperation.o
   SDWebImageOptionsProcessor.o
   SDWebImagePrefetcher.o
   SDWebImageTransition.o
   UIButton+WebCache.o
   UIColor+SDHexString.o
   UIImage+ExtendedCacheData.o
   UIImage+ForceDecode.o
   UIImage+GIF.o
   UIImage+MemoryCacheCost.o
   UIImage+Metadata.o
   UIImage+MultiFormat.o
   UIImage+Transform.o
   UIImageView+HighlightedWebCache.o
   UIImageView+WebCache.o
   UIView+WebCache.o
   UIView+WebCacheOperation.o

---

1. 准备两个.a静态库: libAFNetworking.a和libSDWebImage.a

   .
   ├── libAFNetworking.a
   └── libSDWebImage.a

2. 先将.a展开成.o文件, 利用x参数

   • 展开AFNetworking

     ar x /Users/shenyj/Documents/CodeForTest/lib/staticLibMerge/staticLib/libAFNetworking.a

   • 展开SDWebImage

     ar x /Users/shenyj/Documents/CodeForTest/lib/staticLibMerge/staticLib/libSDWebImage.a

3. 利用ar合并

   ar -rc libMerge.a *.o

   生成新的.a静态库: libMerge.a

4. 验证下合并是否成功

   ar -t /Users/shenyj/Documents/CodeForTest/lib/staticLibMerge/staticLib/libMerge.a

   会显示两个静态库的全部.o文件