无法生成iOS应用程序（Xcode版本9.4.1（9F2000），颤振0.5.1）

这是一个试驾示例“” 我有以下错误，请评论如何解决这个问题

Xcode's output:
↳
    === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
    clang-3.5: error: unknown argument: '-gmodules'
    clang-3.5: error: unknown argument: '-fbuild-session-file=/Users/nelson/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/Session.modulevalidation'
    clang-3.5: error: no such file or directory: '/Users/nelson/Library/Developer/Xcode/DerivedData/Runner-ctvpprsqskddfxbtqtsepwpaebqm/Index/DataStore'
    clang-3.5: error: option '-fmodules-validate-once-per-build-session' requires '-fbuild-session-timestamp=<seconds since Epoch>'
    Command /usr/local/bin/clang-omp failed with exit code 1
    clang-3.5: error: unknown argument: '-gmodules'
    clang-3.5: error: unknown argument: '-fbuild-session-file=/Users/nelson/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/Session.modulevalidation'
    clang-3.5: error: no such file or directory: '/Users/nelson/Library/Developer/Xcode/DerivedData/Runner-ctvpprsqskddfxbtqtsepwpaebqm/Index/DataStore'
    clang-3.5: error: option '-fmodules-validate-once-per-build-session' requires '-fbuild-session-timestamp=<seconds since Epoch>'
    Command /usr/local/bin/clang-omp failed with exit code 1
    === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
    error: the following command failed with exit code 1 but produced no further output
    CompileC /Users/nelson/Library/Developer/Xcode/DerivedData/Runner-ctvpprsqskddfxbtqtsepwpaebqm/Build/Intermediates.noindex/Runner.build/Debug-iphonesimulator/Runner.build/Objects-normal/x86_64/Runner_vers.o /Users/nelson/Library/Developer/Xcode/DerivedData/Runner-ctvpprsqskddfxbtqtsepwpaebqm/Build/Intermediates.noindex/Runner.build/Debug-iphonesimulator/Runner.build/DerivedSources/Runner_vers.c normal x86_64 c com.apple.compilers.llvm.clang.1_0.compiler
    clang-3.5: error: unknown argument: '-gmodules'
    clang-3.5: error: unknown argument: '-fbuild-session-file=/Users/nelson/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/Session.modulevalidation'
    clang-3.5: error: no such file or directory: '/Users/nelson/Library/Developer/Xcode/DerivedData/Runner-ctvpprsqskddfxbtqtsepwpaebqm/Index/DataStore'
    clang-3.5: error: option '-fmodules-validate-once-per-build-session' requires '-fbuild-session-timestamp=<seconds since Epoch>'
    Command /usr/local/bin/clang-omp failed with exit code 1
    clang-3.5: error: unknown argument: '-gmodules'
    clang-3.5: error: unknown argument: '-fbuild-session-file=/Users/nelson/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/Session.modulevalidation'
    clang-3.5: error: no such file or directory: '/Users/nelson/Library/Developer/Xcode/DerivedData/Runner-ctvpprsqskddfxbtqtsepwpaebqm/Index/DataStore'
    clang-3.5: error: option '-fmodules-validate-once-per-build-session' requires '-fbuild-session-timestamp=<seconds since Epoch>'
    Command /usr/local/bin/clang-omp failed with exit code 1
Could not build the application for the simulator.
Error launching application on iPhone 7 Plus.

Xcode的输出：
↳
==使用配置调试生成项目运行程序的目标运行程序===
clang-3.5:错误：未知参数：'-gmodules'
clang-3.5:错误：未知参数：'-fbuild会话文件=/Users/nelson/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/session.modulevalidation'
clang-3.5:错误：没有这样的文件或目录：'/Users/nelson/Library/Developer/Xcode/DerivedData/Runner ctvpprsqskddfxbtqtsepwpaebqm/Index/DataStore'
clang-3.5:错误：选项“-fmodules每个构建会话验证一次”需要“-fbuild会话时间戳=”
命令/usr/local/bin/clang omp失败，退出代码为1
clang-3.5:错误：未知参数：'-gmodules'
clang-3.5:错误：未知参数：'-fbuild会话文件=/Users/nelson/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/session.modulevalidation'
clang-3.5:错误：没有这样的文件或目录：'/Users/nelson/Library/Developer/Xcode/DerivedData/Runner ctvpprsqskddfxbtqtsepwpaebqm/Index/DataStore'
clang-3.5:错误：选项“-fmodules每个构建会话验证一次”需要“-fbuild会话时间戳=”
命令/usr/local/bin/clang omp失败，退出代码为1
==使用配置调试生成项目运行程序的目标运行程序===
错误：以下命令失败，退出代码为1，但未生成进一步的输出
CompileC/Users/nelson/Library/Developer/Xcode/DerivedData/Runner ctvpprsqskdfxbtqstseppaebqm/Build/Intermediates.noindex/Runner.Build/Debug iphonesimulator/Runner.Build/Objects normal/x86\u 64/Runner\vers.o/Users/nelson/Library/Developer/Xcode/DerivedData/Runner-ctvpprsqskddfxbtqtsepwpaebqm/Build/Intermediates.noindex/Runner.Build/Debug iphonesimulator/Runner.Build/DerivedSources/Runner\vers.c normal x86\u 64 c com.apple.compilers.llvm.clang.1\u 0.compiler
clang-3.5:错误：未知参数：'-gmodules'
clang-3.5:错误：未知参数：'-fbuild会话文件=/Users/nelson/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/session.modulevalidation'
clang-3.5:错误：没有这样的文件或目录：'/Users/nelson/Library/Developer/Xcode/DerivedData/Runner ctvpprsqskddfxbtqtsepwpaebqm/Index/DataStore'
clang-3.5:错误：选项“-fmodules每个构建会话验证一次”需要“-fbuild会话时间戳=”
命令/usr/local/bin/clang omp失败，退出代码为1
clang-3.5:错误：未知参数：'-gmodules'
clang-3.5:错误：未知参数：'-fbuild会话文件=/Users/nelson/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/session.modulevalidation'
clang-3.5:错误：没有这样的文件或目录：'/Users/nelson/Library/Developer/Xcode/DerivedData/Runner ctvpprsqskddfxbtqtsepwpaebqm/Index/DataStore'
clang-3.5:错误：选项“-fmodules每个构建会话验证一次”需要“-fbuild会话时间戳=”
命令/usr/local/bin/clang omp失败，退出代码为1
无法为模拟器生成应用程序。
在iPhone 7 Plus上启动应用程序时出错。

我已通过以下方式解决了该问题：

如果你仔细看看这个问题，它触发了一个过时的Clang3.5版本，我卸载了一个过时的版本并安装了一个新版本

从os x中删除叮当作响的omp

$ brew uninstall clang-omp

卸载clang omp后，需要将颤振安装程序更新至最新版本。事实上，我以前做过更新，但我又做了一次

$ flutter upgrade

我试图再次运行flutter，但无法编译它。它不见了，叮当作响

$ flutter run    
=== BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
    error: can't exec '/usr/local/bin/clang-omp' (No such file or directory)
    Command /usr/local/bin/clang-omp failed with exit code 71
    error: can't exec '/usr/local/bin/clang-omp' (No such file or directory)
    Command /usr/local/bin/clang-omp failed with exit code 71

因为在编译过程中需要更新版本的clang。我安装了llvm

$ brew install llvm

并相应地更新路径

echo 'export PATH="/usr/local/opt/llvm/bin:$PATH"' >> ~/.bash_profile

再次编译应用程序，它已成功编译

$flatter运行
在调试模式下在iPhone 7 Plus上启动lib/main.dart。。。
正在启动Xcode生成。。。
├─集合颤振资源。。。1.1s
└─编译、链接和签名。。。8.6s
Xcode构建完成。11.3秒
正在将文件同步到设备iPhone 7 Plus。。。3.9秒