使用 Xcode 手动打包是正常的，但是使用脚本打包会报错，错误如下：
The following build commands failed:
PhaseScriptExecution [CP-User]\ Run\ Flutter\ Build\ Script .../Script-C3A097A8FE12FF5F875B057C.sh
flutter build ios --release
then re-run Archive from Xcode.
Command PhaseScriptExecution failed with a nonzero exit code
定位错误
到 Flutter 环境目录下，按图上所示地址找到 xcode_backend.sh，也可以直接看 官方脚本链接
# Archive builds (ACTION=install) should always run in release mode.
if [[ "$ACTION" == "install" && "$build_mode" != "release" ]]; then
EchoError "========================================================================"
EchoError "ERROR: Flutter archive builds must be run in Release mode."
EchoError ""
EchoError "To correct, ensure FLUTTER_BUILD_MODE is set to release or run:"
EchoError "flutter build ios --release"
EchoError ""
EchoError "then re-run Archive from Xcode."
EchoError "========================================================================"
exit -1
fi
解决方案
可以看到，官方脚本的说明里面给出两个解决方案
方案一：直接设置
FLUTTER_BUILD_MODE为release方案二：先运行
flutter build ios --release，再使用Xcode去打包
这里我们是用 Jenkins 脚本进行打包，所以方案二不适用，方案一更加方便些
# 设置Flutter的编译模式为release
export FLUTTER_BUILD_MODE=release
# 执行原有项目的打包脚本
./script/build_iOS.sh
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