iphonexcodecocoa-touch

Error: Apple Mach-O Linker (Id) Warning in Xcode

In my app I have been working to import and export the database.

I have imported some files which is required for this functionality but when I try to run the app in simulator the errors listed below occurs. Which type of errors are these?

Undefined symbols for architecture i386:
  "_inflateInit2_", referenced from:
      -[NSData(NSDataExtension) gzipInflate] in NSData+CocoaDevUsersAdditions.o
  "_inflate", referenced from:
      -[NSData(NSDataExtension) gzipInflate] in NSData+CocoaDevUsersAdditions.o
  "_inflateEnd", referenced from:
      -[NSData(NSDataExtension) gzipInflate] in NSData+CocoaDevUsersAdditions.o
  "_deflateInit2_", referenced from:
      -[NSData(NSDataExtension) gzipDeflate] in NSData+CocoaDevUsersAdditions.o
  "_deflate", referenced from:
      -[NSData(NSDataExtension) gzipDeflate] in NSData+CocoaDevUsersAdditions.o
  "_deflateEnd", referenced from:
      -[NSData(NSDataExtension) gzipDeflate] in NSData+CocoaDevUsersAdditions.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status
Solution

  • You didn't include the libz.tbd where those functions are. Select the project node, select your target, go to the Build Phases tab, expand "Link Binaries With Libraries", add libz.dylib, and try again.