Xcode10以后：ld: library not found

将文件夹的内容拷贝到对应路径下即可

模拟器运行需要 CoreSimulator libstdc++.6.0.9.dylib 766,624B /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/

下载链接：CoreSimulator  提取码: r8ie

模拟器编译需要 iPhoneSimulator libstdc++.6.0.9.tbd 206,800B /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/

下载链接：iPhoneSimulator  提取码: 54yx

iOS真机 iPhoneOS libstdc++.6.0.9.tbd 209,673B /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib/

下载链接：iPhoneOS  提取码: xp7f

macAPP MacOSX libstdc++.6.0.9.tbd 206,751B /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib/

下载链接：MacOSX  提取码: ymme