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I'm getting a unique error when compiling on Xcode lately. The app in question is one I got from github called sios. The error is:

clang: error: unknown argument: '-mstructure-size-boundary=32' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
clang: error: unknown argument: '-falign-loops' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
clang: error: unknown argument: '-falign-labels' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
clang: error: unknown argument: '-falign-jumps' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
clang: error: unknown argument: '-fpeel-loops' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 1

How can this be fixed?

user717452
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2 Answers2

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You'll have to talk to the people who develop that code. Those are unknown build arguments, and Xcode 5.1 contains a new version of clang that rejects them (instead of just letting them pass unnoticed, which is what happened previously).

Alternatively, compile with Xcode 5.0. (See my discussion here about how Xcode 5.0 and 5.1 can live side by side.)

Community
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matt
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  • I had seen some posts about the wunused post and being able to somehow keep that from throwing errors. But, the posts I saw didn't really say how you do that. – user717452 Apr 16 '14 at 23:27
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Remove the "unknown" arguments listed in the errors thrown by clang, from the SNES_CFLAGS under the build settings in xcode. It will compile successfully then ;-)

lewtonium
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