Xcode 4.6 zXing compile error after Xcode update (4H127)

Question

Different projects using ZXing have error after last Xcode update:

Error messages are:

Any compiler flag I have to set up?

i assume these are not errors but warnings for the fields which you might have not used within your project — nsgulliver, Jan 29 '13 at 22:35
Unfortunately the compiler show them as errors (red color and not yellow color as for warning) and is impossible to complete the build phase. I try to remove the "unused" variable definitions but the error appears somewhere else (variable not defined...) — Fulkron, Jan 29 '13 at 22:40
This should be posted to the ZXing project page, not SO. It's always best to contact the developers directly for such an issue. — rmaddy, Jan 29 '13 at 22:49
This modifications work (tested): http://code.google.com/p/zxing/source/detail?r=2566# — Rok Jarc, Mar 11 '13 at 17:02

score 40 · Accepted Answer · answered Feb 05 '13 at 09:14

40

Just add this flag

-Wno-unused-private-field

under ZXingWidget target -> Build Settings -> Other Warning Flags. Click the + button and paste the flag, clean and build again.

How to set compiler flags

(No need to remove any other flag, just ignore unused private field warning)

answered Feb 05 '13 at 09:14

txulu

1

The best temporary fix up to this time. Thanks – Fulkron Feb 06 '13 at 08:24
1

if i were @Fulkron i would have accepted this answer. This is the most straight forward answer to this problem :) – Selvin Feb 11 '13 at 10:55
1

This solution leaves the project clean without warnings – txulu Feb 15 '13 at 17:15
@txulu After fixing this i got issue from SMSAction.h file? – Karthik Sep 30 '13 at 10:32

krisrak · Answer 2 · 2013-02-06T18:29:00.573

13

Here is a workaround to get it to compile. You have remove couple compile warning flags:

Select the xzing project, build settings, look for "Other Warning Flags" and remove -Werror and -Wno-unused-parameter

enter image description here

edited Feb 06 '13 at 18:29

answered Jan 31 '13 at 00:22

krisrak

Its in the section titled "Apple LLVM 4.2 compiler warning flags". See screenshot here: https://www.dropbox.com/s/az64llbjqv326mr/llvm_compiler_warning_flags.png – Shiprack Feb 03 '13 at 14:06

score 3 · Answer 3 · answered Jan 29 '13 at 23:24

3

They have the project set up to treat warnings as errors. Turn off that setting and it should compile, so you can at least run the sample code.

Also tell them so they can fix the warnings.

answered Jan 29 '13 at 23:24

Are you looking at the target it's trying to compile? – Kendall Helmstetter Gelner Jan 29 '13 at 23:48
2

OK in the subProject target there is the flag to change to avoid error messages. Hope they fix asap. tnx – Fulkron Jan 30 '13 at 10:59

score 2 · Answer 4 · answered Jan 30 '13 at 06:35

2

Looks like this is a temporary fix http://code.google.com/p/zxing/issues/detail?id=1494 I hope for a much nicer solution soon.

answered Jan 30 '13 at 06:35

Ivan Carosati

Just removing the "Other Warning Flags" "-Werror" worked perfectly for me! Got only 4 warnings so far. (Which is just what Kendall Helmstetter Gelner was saying) – Ivan Carosati Jan 30 '13 at 15:56

4 Answers4