Flutter iOS 构建在 BigSur 上失败，XCode 12

编程问答 2022-05-23

问题描述

由于标题问题，Flutter iOS 构建失败。

我按照 Flutter.dev 上提到的简单步骤在 iOS 模拟器上启动应用程序。我在 Android/Web 上使用 Flutter 没有任何问题，但这是我第一次尝试在 iOS 上运行它。

错误摘要 -（完整错误：https://gist.github.com/mannprerak2/520f8a749431a50b8472783c71d67dda）

...
   #import "Headers/CoreMedia.h"
            ^
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhonesimulator.platform/Developer/SDKs/iPhonesimulator14.4.sdk/System/Library/Frameworks/CoreMedia.framework/Headers/CoreMedia.h:15:10: note: in file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhonesimulator.platform/Developer/SDKs/iPhonesimulator14.4.sdk/System/Library/Frameworks/CoreMedia.framework/Headers/CoreMedia.h:15:
    #include <CoreMedia/CMFormatDescription.h>
             ^
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhonesimulator.platform/Developer/SDKs/iPhonesimulator14.4.sdk/System/Library/Frameworks/CoreMedia.framework/Headers/CMFormatDescription.h:26:10: error: Could not build module 'CoreAudio'
    #include <CoreAudio/CoreAudioTypes.h>
             ^
    /Users/prerakmann/development/test_ios/ios/Runner/Runner-Bridging-Header.h:1:9: note: in file included from /Users/prerakmann/development/test_ios/ios/Runner/Runner-Bridging-Header.h:1:
    #import "GeneratedpluginRegistrant.h"
            ^
    /Users/prerakmann/development/test_ios/ios/Runner/GeneratedpluginRegistrant.h:8:9: error: Could not build module 'Flutter'
    #import <Flutter/Flutter.h>
            ^
    192 errors generated.
    <unkNown>:0: error: Failed to emit precompiled header '/Users/prerakmann/Library/Developer/Xcode/DerivedData/Runner-ahrcvwuwhqnepxdcpfsagztcuwrr/Build/Intermediates.noindex/precompiledHeaders/Runner-Bridging-Header-swift_1QEOMJ6SUMBGB-clang_3BG5Q8JCTPBV5.pch' for bridging header '/Users/prerakmann/development/test_ios/ios/Runner/Runner-Bridging-Header.h'
    384 errors generated.
    <unkNown>:0: error: generate-pch command Failed with exit code 1 (use -v to see invocation)
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Constructing build description
...

系统：Macbook Pro 13 (2020)、BigSur 11.2.1、Xcode 12.4

Flutter：已在最新的稳定版和 Beta 版频道上试用。

模拟器：已在 iOS 8、iOS 12 上试用。

重现步骤：创建一个新的 Flutter 应用，运行它。

解决方法

事实证明这是由于 CPATH 被定义为这样而发生的。

╰─$ echo $CPATH
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include

临时修复方法是在当前终端窗口中设置 CPATH=，运行 flutter clean，然后运行应用程序。

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