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Gurio
Gurio

Reputation: 157

Compiling clang++ with -std=gnu++11 fails

I am trying to compile my project via clang++, version 3.4. I am using flag -std=gnu++11, and it fails.

Earlier I used llvm 3.3 and everything was OK. but now i have such error message:

clang (LLVM option parsing): Unknown command line argument '-std=gnu++11'.  Try: 'clang (LLVM option parsing) -help'
clang (LLVM option parsing): Did you mean '-stats=gnu++11'?

Upvotes: 0

Views: 1611

Answers (1)

user743382
user743382

Reputation:

Testing shows that this error can come up when some other bogus options get used. For example:

$ clang -mllvm -std=gnu++11 test3.cc -o test3
clang (LLVM option parsing): Unknown command line argument '-std=gnu++11'.  Try: 'clang (LLVM option parsing) -help'
clang (LLVM option parsing): Did you mean '-stats=gnu++11'?

The -mllvm option tells clang to not process the -std=gnu++11 option itself, but to pass it on to LLVM. But LLVM has no idea what this option means.

To solve the problem, make sure your other options are correct; the error message is leading you to think the problem is somewhere it isn't.

Upvotes: 5

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