objective-c - iOS : Compiling Static Libraries

Question

我正在尝试构建我的第一个静态库，但遇到编译问题。我的意思是我可以编译我的库，一切看起来都很好，但是当我设置一个测试项目来测试它时，我收到了这种错误:

ld: warning: ignoring file /Users/*/Desktop/TestApp/LibProva/libProva.a, file was built for archive which is not the architecture being linked (i386) Undefined symbols for architecture i386: "_OBJC_CLASS_$_Prova", referenced from: objc-class-ref in AppDelegate.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation)

ld: warning: ignoring file /Users/**/Desktop/TestApp/LibProva/libProva.a, file was built for archive which is not the architecture being linked (i386)

所以我猜编译有问题(由于模拟器和设备中的架构不同)，但我不知道如何以正确的方式进行操作。有人可以解释一下如何解决这个问题吗？

Answer 1

您必须使用 lipo 创建通用二进制文件:

#!/bin/bash
#build the device
echo building for ARM architecture
xcodebuild -sdk iphoneos4.3 "ARCHS=armv6 armv7" build > /dev/null
#build the simulator
echo building for the i386 architecture
xcodebuild -sdk iphonesimulator4.3 "ARCHS=i386 x86_64" "VALID_ARCHS=i386 x86_64" build > /dev/null
#make the folder
mkdir "Fat Binary"
#lipo suck it together
echo lipo binaries together
lipo -output Fat\ Binary/libmylib.a  -create build/Release-iphoneos/libprefuse_visual_iOS.a build/Release-iphonesimulator/libmylib.a
echo lipo binary saved at $./Fat Binary/libmylib.a
echo copying headers
cp -R build/Release-iphoneos/usr "Fat Binary"
echo [COMPLETE]

请务必将 libmylib.a 的实例替换为 xcodebuild 生成的 .a 的实际名称。