Undefined symbols for architecture i386: "_deflate", referenced from PlatCompress(enumCompressOperation, CompressCookie, void, long) in libMo.a

Question

I'm doing native iOS application using SUP.As per documentation; i have included the library and given the link path in Xcode. While building getting following error:

Undefined symbols for architecture i386:
  "_deflate", referenced from:
      PlatCompress(enumCompressOperation, CompressCookie*, void*, long) in         libMo.a(tlplatcompress.o)
  "_deflateEnd", referenced from:
      PlatCompress(enumCompressOperation, CompressCookie*, void*, long) in libMo.a(tlplatcompress.o)
  "_deflateInit_", referenced from:
      StartCompression(enumCompressOperation, unsigned char, long (*)(void*, void*, long), void*, void**) in libMo.a(tlplatcompress.o)
  "_deflateParams", referenced from:
      StartCompression(enumCompressOperation, unsigned char, long (*)(void*, void*, long), void*, void**) in libMo.a(tlplatcompress.o)
  "_inflate", referenced from:
      PlatCompress(enumCompressOperation, CompressCookie*, void*, long) in libMo.a(tlplatcompress.o)
  "_inflateEnd", referenced from:
      PlatCompress(enumCompressOperation, CompressCookie*, void*, long) in libMo.a(tlplatcompress.o)
  "_inflateInit_", referenced from:
      StartCompression(enumCompressOperation, unsigned char, long (*)(void*, void*,  long), void*, void**) in libMo.a(tlplatcompress.o)
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Please help me how to solve this error.I'm new to native iOS development using SUP.

Thanks.

possible duplicate of [Error:Apple Mach-O Linker (Id) Warning](http://stackoverflow.com/questions/7752127/errorapple-mach-o-linker-id-warning) — Martin R, Aug 05 '13 at 08:25
Got sol from here(now no build error): http://stackoverflow.com/questions/7752127/errorapple-mach-o-linker-id-warning Thanks. — bapi, Aug 05 '13 at 09:02

Dhaval H. Nena · Answer 1 · 2018-10-17T13:31:20.570

154

I also had a same error.

Add libz.dylib to framework from the target -> Build Phases tab -> Link Binaries With Libraries,

hope that will work for you.

Note: If libz.dylib not found, try adding libz.tbd

edited Oct 17 '18 at 13:31

answered Nov 30 '13 at 08:26

Dhaval H. Nena

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what is libz.dylib & what does it do? – RYFN Oct 01 '14 at 12:37
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Worked for me on Xcode7, iOS 9.1. My lacking libs were libz.tbd and libsqlite3.tbd – voghDev Jan 19 '16 at 11:11
2

there is no "libz.dylib" but add libz.tbd and works :) – torun Feb 27 '17 at 09:32
Thanks for the answer @Dhaval. Also can you please help me understand what is libz.tbd and how it has resolved this issue. – GJDK Feb 25 '19 at 13:31
@GJDK libz is a library for zip and unzip functionality. The above symbols _deflate, _inflate etc are from this library. – Omkar Dec 10 '20 at 17:21

score 44 · Answer 2 · answered Dec 08 '15 at 22:35

44

Starting with Xcode 7, instead of adding libz.dylib, you should do this:

Go to the project Build Settings tab
Search for Other Linker Flags
Add -lz as a linker flag (see screenshot)
In the Product menu, select Clean before building again

answered Dec 08 '15 at 22:35

Abhi Beckert

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Thank you so much, you saved my life :) – Sagar In Jan 04 '16 at 06:11
getting the same issue in Xcode 8.2.1 for adding a custom framework in a application .... pleasehelp – SHASHANK Feb 28 '17 at 12:15
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Please add an explanation as to why this resolves the problem. – Chuck Krutsinger Jul 07 '17 at 16:45
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@ChuckKrutsinger I know that the manual for `ld` explains the `-l[x]` flag tells the linker how to find the `lib[x].dylib` (in this case, libz.dylib). Somebody who understands this issue better than me should add an explanation. I just stumbled across the solution after other answers here didn't work, and posted what I did. – Abhi Beckert Jul 25 '17 at 20:55
still true for Xcode 9. Either use flags or add the framework would work. – Wingzero Feb 01 '18 at 06:50

score 19 · Answer 3 · edited Sep 17 '14 at 13:58

Undefined symbols for architecture i386:

  "_deflate", referenced from:
      PlatCompress(enumCompressOperation, CompressCookie*, void*, long) in         libMo.a(tlplatcompress.o)
  "_deflateEnd", referenced from:
      PlatCompress(enumCompressOperation, CompressCookie*, void*, long) in libMo.a(tlplatcompress.o)
  "_deflateInit_", referenced from:
      StartCompression(enumCompressOperation, unsigned char, long (*)(void*, void*, long), void*, void**) in libMo.a(tlplatcompress.o)
  "_deflateParams", referenced from:
      StartCompression(enumCompressOperation, unsigned char, long (*)(void*, void*, long), void*, void**) in libMo.a(tlplatcompress.o)
  "_inflate", referenced from:
      PlatCompress(enumCompressOperation, CompressCookie*, void*, long) in libMo.a(tlplatcompress.o)
  "_inflateEnd", referenced from:
      PlatCompress(enumCompressOperation, CompressCookie*, void*, long) in libMo.a(tlplatcompress.o)
  "_inflateInit_", referenced from:
      StartCompression(enumCompressOperation, unsigned char, long (*)(void*, void*,  long), void*, void**) in libMo.a(tlplatcompress.o)
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I had also the same problem,I think you didn't include the libz.dylib library.

To do so:

go to target section
Build Phases tab
Link Binaries With Libraries
click on + button
search libz.dylib
clcik on add button.

Nicely answered. Deep thought. Thanks – Abdul Yasin Mar 08 '17 at 05:50 — Abdul Yasin, Mar 08 '17 at 05:50

score 12 · Answer 4 · answered Mar 18 '16 at 09:10

12

1.go to target section

2.Build Phases tab

3.Link Binaries With Libraries

4.click on + button

5.search libz.tbd (or libz.dylib)

6.click on add button.

answered Mar 18 '16 at 09:10

Vinoth Anandan

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Your answer is no different to the other answers, so why have you posted it? – Droppy Mar 18 '16 at 09:17
Only difference i have made is "5.search libz.tbd (or libz.dylib)" I think libz.tbd is the new name for libz.dylib – Vinoth Anandan Mar 19 '16 at 04:39

Undefined symbols for architecture i386: "_deflate", referenced from PlatCompress(enumCompressOperation, CompressCookie*, void*, long) in libMo.a

4 Answers4

Undefined symbols for architecture i386: "_deflate", referenced from PlatCompress(enumCompressOperation, CompressCookie, void, long) in libMo.a