【发布时间】：2020-07-14 21:05:47
【问题描述】：
每次我尝试在 Xcode 上构建 Unity 项目时，都会收到此构建时错误。
使用完全相同的 firebase 包的其他游戏不会发生这种情况。我尝试使用 pod update 进行更新，但仍然没有成功。
Undefined symbols for architecture arm64:
"firebase::FutureHandle::FutureHandle(firebase::FutureHandle const&)", referenced from:
firebase::remote_config::Fetch(unsigned long long) in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
____ZN8firebase13remote_config5FetchEy_block_invoke in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
___copy_helper_block_ea8_40c37_ZTSKN8firebase16SafeFutureHandleIvEE in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
"firebase::FutureHandle::Detach()", referenced from:
firebase::remote_config::Fetch(unsigned long long) in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
"firebase::FutureHandle::FutureHandle(unsigned long, firebase::detail::FutureApiInterface*)", referenced from:
_Firebase_RemoteConfig_Fetch__SWIG_1 in libFirebaseCppRemoteConfig.a(remote_config_08c4a1f5237ed5b16a396c81df6a9ee4.o)
firebase::remote_config::FetchLastResult() in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
"firebase::FutureHandle::FutureHandle()", referenced from:
_Firebase_RemoteConfig_Fetch__SWIG_1 in libFirebaseCppRemoteConfig.a(remote_config_08c4a1f5237ed5b16a396c81df6a9ee4.o)
firebase::remote_config::FetchLastResult() in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
"firebase::ReferenceCountedFutureImpl::CompleteHandle(firebase::FutureHandle const&)", referenced from:
void firebase::ReferenceCountedFutureImpl::CompleteInternal<void, void firebase::ReferenceCountedFutureImpl::CompleteInternal<void>(firebase::FutureHandle const&, int, char const*)::'lambda'(void*)>(firebase::FutureHandle const&, int, char const*, void firebase::ReferenceCountedFutureImpl::CompleteInternal<void>(firebase::FutureHandle const&, int, char const*)::'lambda'(void*) const&) in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
"firebase::ReferenceCountedFutureImpl::ReleaseMutexAndRunCallbacks(firebase::FutureHandle const&)", referenced from:
void firebase::ReferenceCountedFutureImpl::CompleteInternal<void, void firebase::ReferenceCountedFutureImpl::CompleteInternal<void>(firebase::FutureHandle const&, int, char const*)::'lambda'(void*)>(firebase::FutureHandle const&, int, char const*, void firebase::ReferenceCountedFutureImpl::CompleteInternal<void>(firebase::FutureHandle const&, int, char const*)::'lambda'(void*) const&) in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
"firebase::FutureHandle::operator=(firebase::FutureHandle const&)", referenced from:
_Firebase_RemoteConfig_Fetch__SWIG_1 in libFirebaseCppRemoteConfig.a(remote_config_08c4a1f5237ed5b16a396c81df6a9ee4.o)
firebase::remote_config::FetchLastResult() in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
"firebase::FutureHandle::~FutureHandle()", referenced from:
_Firebase_RemoteConfig_Fetch__SWIG_1 in libFirebaseCppRemoteConfig.a(remote_config_08c4a1f5237ed5b16a396c81df6a9ee4.o)
firebase::remote_config::Fetch(unsigned long long) in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
firebase::remote_config::FetchLastResult() in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
____ZN8firebase13remote_config5FetchEy_block_invoke in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
___destroy_helper_block_ea8_40c37_ZTSKN8firebase16SafeFutureHandleIvEE in libFirebaseCppRemoteConfig.a(remote_config_ios_e6d2ed559f32c182ac8412737f5fb36a.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
【问题讨论】：
标签： xcode firebase unity3d cocoapods