Compiling ZipArchive in XCode 4 project

Question

I'm trying to compile ZipArchive with my project. I imported all the source files, including the minizip files and I am at a loss to understand these errors. I've tried a dozen other ways to incorporate compression/decompression into my iphone project, all with out success. ZipArchive seems to be the best library out, and this problem looks like it's a simple build settings configuration problem but I cannot figure it out.

Undefined symbols for architecture armv6:
  "_zipClose", referenced from:
      -[ZipArchive CloseZipFile2] in ZipArchive.o
  "_zipOpenNewFileInZip3", referenced from:
      -[ZipArchive addFileToZip:newname:] in ZipArchive.o
  "_unzOpenCurrentFile", referenced from:
      -[ZipArchive UnzipFileTo:overWrite:] in ZipArchive.o
  "_unzGetGlobalInfo", referenced from:
      -[ZipArchive UnzipOpenFile:] in ZipArchive.o
  "_unzReadCurrentFile", referenced from:
      -[ZipArchive UnzipFileTo:overWrite:] in ZipArchive.o
  "_unzOpen", referenced from:
      -[ZipArchive UnzipOpenFile:] in ZipArchive.o
  "_unzCloseCurrentFile", referenced from:
      -[ZipArchive UnzipFileTo:overWrite:] in ZipArchive.o
  "_zipWriteInFileInZip", referenced from:
      -[ZipArchive addFileToZip:newname:] in ZipArchive.o
  "_zipOpenNewFileInZip", referenced from:
      -[ZipArchive addFileToZip:newname:] in ZipArchive.o
  "_unzGoToFirstFile", referenced from:
      -[ZipArchive UnzipFileTo:overWrite:] in ZipArchive.o
  "_unzGetCurrentFileInfo", referenced from:
      -[ZipArchive UnzipFileTo:overWrite:] in ZipArchive.o
  "_zipCloseFileInZip", referenced from:
      -[ZipArchive addFileToZip:newname:] in ZipArchive.o
  "_unzClose", referenced from:
      -[ZipArchive UnzipCloseFile] in ZipArchive.o
  "_zipOpen", referenced from:
      -[ZipArchive CreateZipFile2:] in ZipArchive.o
  "_unzGoToNextFile", referenced from:
      -[ZipArchive UnzipFileTo:overWrite:] in ZipArchive.o
  "_unzOpenCurrentFilePassword", referenced from:
      -[ZipArchive UnzipFileTo:overWrite:] in ZipArchive.o
ld: symbol(s) not found for architecture armv6
collect2: ld returned 1 exit status

Answer 1

I had exactly the same issue. I use Xcode 4.4 for iOS 5.1. And I solved it this way:

1. Remove the all ZipArchive-Files incl. Minizip-Folder from your project - move to trash.
2. Re-Add both ZipArchive-Files and the Minitip-Folder and ENSURE YOU SELECT THE OPTION "Create groups for any added folder" instead of "Create folder references for any added folder".
3. if you use ARC, then add to all Build Phases -> Compile Sources ZipArchive-Items the option "-fno-objc-arc"

That´s it - good luck.