老项目模拟器运行提示Executable Path is a Directory

Executable Path is a Directory

/Users/flymac/Library/Developer/Xcode/DerivedData/project-fidnwpgktjppikakteauackxjniw/Build/Products/Debug-iphonesimulator/project.app is not a valid path to an executable file.

原因：

Xcode12淘汰了VALID_ARCHS，但是有些集成进来的第三方库还是有这个key，Xcode12模拟器已经用arm架构来编译项目，而link链接的还是x86架构

解决方法：

到Build Settings 中找到VALID_ARCHS，添加x86_64

这个问题解决后，可能还会出现第三方库未找到框架x86_64的问题

not found for architecture x86_64

Undefined symbols for architecture x86_64:"_OBJC_CLASS_$_AFHTTPSessionManager", referenced from:in ANHttpTool.o"_OBJC_CLASS_$_AFNetworkReachabilityManager", referenced from:in ANHttpTool.o"_OBJC_CLASS_$_AFSecurityPolicy", referenced from:in ANHttpTool.o"_OBJC_CLASS_$_DWKWebView", referenced from:in YJPracticeWebViewController.o"_OBJC_CLASS_$_IQKeyboardManager", referenced from:in AppDelegate.o"_OBJC_CLASS_$_MJRefreshAutoNormalFooter", referenced from:in YJCommentsListController.o"_OBJC_CLASS_$_MJRefreshNormalHeader", referenced from:in YJCommentsListController.o"_OBJC_CLASS_$_RACCommand", referenced from:in YJCommentViewModel.o"_OBJC_CLASS_$_RACSignal", referenced from:in YJCommentViewModel.o"_OBJC_CLASS_$_SDImageCache", referenced from:in ANCacheManager.o"_OBJC_CLASS_$_SDWebImageDownloader", referenced from:in YJCommentViewController.o"_OBJC_CLASS_$_SVProgressHUD", referenced from:in NetWorkTools.o"_OBJC_CLASS_$_TKAlertCenter", referenced from:in UIView+ANHUD.o"_YYScreenSize", referenced from:-[YJWKWebViewController webView] in YJWKWebViewController.o-[YJWKWebViewController webView] in YJWKWebViewController.o___54-[YJPracticeDetailController setDataWithIndex:isLast:]_block_invoke_2 in YJPracticeDetailController.o-[YJPracticeDetailController scrollView] in YJPracticeDetailController.o-[YJPracticeDetailController becomeVipView] in YJPracticeDetailController.o-[YJSingCourseListController setUpView] in YJSingCourseListController.o-[YJPracticeWebViewController webView] in YJPracticeWebViewController.o-[YJPracticeWebViewController webView] in YJPracticeWebViewController.o...
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

解决方法：

在Podfie中添加以下代码

post_install do |installer|installer.generated_projects.each do |project|project.targets.each do |target|target.build_configurations.each do |config|config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '12.0'config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64"endendend
end