Xcode 10 - Build project failed

Question

I just updated my Xcode to version 10. And when i build my project it shows me error

ld: library not found for -lstdc++.6.0.9 clang: error: linker command failed with exit code 1 (use -v to see invocation)

I have been trying to clean project for many times but still not work for me.

Anyone has solution for this?

Possible duplicate of Xcode 10 beta error: linker command failed with exit code 1 — Kerberos
– Kerberos, Commented Oct 2, 2018 at 14:50

JTea · Accepted Answer · 2018-10-02 14:44:45Z

2

Xcode 10 removed support for -lstdc++. So check in your project settings under 'BuildPhases -> Link Binary With Libraries ' and remove the -lstdc++ dependency. If you use a 3rd party library which depends on -lstdc++ then you would need to ask to get a new version without this dependency. Also check: Xcode 10 (iOS 12) does not contain libstdc++6.0.9

answered Oct 2, 2018 at 14:44

JTea

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3 Comments

Visal Sambo Over a year ago

Now it throws me another error ld: symbol(s) not found for architecture x86_64

JTea Over a year ago

So then you might actually have a dependency on libstdc++ .

Visal Sambo Over a year ago

You meant when I remove libstdc++, and it throws me another error that mean i have some libraries which depend on it right?

Elhoej · Accepted Answer · 2018-10-02 14:41:13Z

Try to clear the derived data, paste this into your termnial:

rm -rf "$(getconf DARWIN_USER_CACHE_DIR)/org.llvm.clang/ModuleCache" rm -rf ~/Library/Developer/Xcode/DerivedData rm -rf ~/Library/Caches/com.apple.dt.Xcode

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