iOS Can't build/deploy my application anymore after Xcode 5.1 update

Asked Mar 17 '14 at 07:05

Active Mar 17 '14 at 07:05

Viewed 116 times

i just encountered a weird issue right after updating my Xcode 5.0 to 5.1.. the error occurs while building my application..

clang: error: unknown argument: '-fno-obc-arc' [-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

i Can't build my application anymore…? serious issue please help.. thanks in advance..

If u need further info feel free to ask..

asked Mar 17 '14 at 07:05

Ahmed Z.

2,329
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Your compiler flag needs to be `-fno-objc-arc`. There is a typo in it. – Amar Mar 17 '14 at 07:07
i did that but still its giving the same error – Ahmed Z. Mar 17 '14 at 07:07
Did you correct the typo? – Amar Mar 17 '14 at 07:09
Yes i corrected it to `-fno-objc-arc` and restarted xcode too but still same issue... – Ahmed Z. Mar 17 '14 at 07:10
i also tried a clean build combo but nothing... – Ahmed Z. Mar 17 '14 at 07:10
This looks similar to your issue: [xcode LLVM 5.1 clang error](http://stackoverflow.com/questions/22394575/xcode-llvm-5-1-clang-error) – Amar Mar 17 '14 at 07:13
i saw that but issue is i haven't used it in my code… neither can i find it in find option... – Ahmed Z. Mar 17 '14 at 07:25
Check Project -> Build Phases -> Compile Sources. Individual `.m` files are marked with this compiler flag. – Amar Mar 17 '14 at 07:27
yes there are a few but all are with `-fno-objc-arc` – Ahmed Z. Mar 17 '14 at 07:28
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Are you using any libraries which may have wrong flag set internally? – Amar Mar 17 '14 at 07:29
i have used AFNetwork, XMPP Framework, IDZAQ OGG Library, and a few more little libraries… – Ahmed Z. Mar 17 '14 at 07:34
Any way you can check if they have this wrong flag set? Or may be try with their ARC enabled versions. – Amar Mar 17 '14 at 07:38
i can't think of any way… let me try that – Ahmed Z. Mar 17 '14 at 07:41
xcode keeps crashing on changing -fno-objc-arc… ahhhh – Ahmed Z. Mar 17 '14 at 07:52
@Amar still no luck…. – Ahmed Z. Mar 17 '14 at 07:58
May be you can try creating a completely new project by piecing in individual library and figure out which one could be causing issue. Also it would be worth trying to compile your project on a different machine with Xcode 5.1 – Amar Mar 17 '14 at 08:07
If nothing works, better to downgrade Xcode back to 5.0 where your project was compiling. – Amar Mar 17 '14 at 08:08
oh that would be a very long process… downgrading aill be the only solution rytnow – Ahmed Z. Mar 17 '14 at 08:15

iOS Can't build/deploy my application anymore after Xcode 5.1 update

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