Компиляция ZipArchive в проекте XCode 4

Я пытаюсь скомпилировать ZipArchive с моим проектом. Я импортировал все исходные файлы, включая файлы minizip, и не могу понять эти ошибки. Я пробовал дюжину других способов включить сжатие / распаковку в свой проект iphone, но безуспешно. ZipArchive кажется лучшей библиотекой, и эта проблема выглядит как простая проблема с настройкой параметров сборки, но я не могу ее понять.

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