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POCompression/Decompression library for the iPhone and Xcode 4
 

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  1. POCompression/Decompression library for the iPhone and Xcode 4
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    <p>I have been working on a project that requires downloading a zipped file off a server, and am stuck trying to uncompress it on the iPhone. There appear to be a number of solutions such as <a href="http://www.codeproject.com/KB/library/LiteZip.aspx" rel="nofollow">LiteUnzip</a> , <a href="http://code.google.com/p/ziparchive/" rel="nofollow">ZipArchive</a> and a few others but none so apparently effective as these two. The problem I'm having is making either of them work in my Xcode 4 project. </p> <p><strong>LiteUnzip</strong> is in C and I have had extreme difficulty using it. If you have any example code on how to use it to unzip a single zipped file (containing about 60 files), that would be great.</p> <p><strong>ZipArchive</strong> seems to be the favorite around here, but I can't get it to compile without errors. I am following the instructions on <a href="http://code.google.com/p/ziparchive/issues/detail?id=4" rel="nofollow">http://code.google.com/p/ziparchive/issues/detail?id=4</a>, building a static library for iphone but I continue to get these kinds of errors:</p> <pre><code>Undefined symbols for architecture armv6: "_crc32", referenced from: -[ZipArchive addFileToZip:newname:] in libziparchive.a(ZipArchive.o) _unzReadCurrentFile in libziparchive.a(unzip.o) </code></pre> <p>All the sources I've found have success building in Xcode 3.2, but I am working in Xcode 4. </p> <p><strong>Has anybody had success in Xcode 4 with either of these libraries?</strong> Otherwise, do you know of a library that you have had success with? </p>
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    1. COI googled _crc32 symbol, and did you include a header file named "zconf.h" ?
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    2. COthat header is included in the ZipArchive.mm file.
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