error when import zlib in iphone sdk

Question

I have included in my iphone application and the source code I was mocking up the sample code of Molecules provided by Brad Larson, however, when I build the project, it returns the error as below. Can anyone point out for me whether this is a library linking problem or am I missing something else?

"_deflate", referenced from: -[NSData(Gzip) gzipDeflate] in NSData+Gzip.o "_inflateEnd", 
referenced from: -[NSData(Gzip) initWithGzippedData:] in NSData+Gzip.o "inflateInit2", 
referenced from: -[NSData(Gzip) initWithGzippedData:] in NSData+Gzip.o "_inflate", 
referenced from: -[NSData(Gzip) initWithGzippedData:] in NSData+Gzip.o "_deflateEnd", 
referenced from: -[NSData(Gzip) gzipDeflate] in NSData+Gzip.o "deflateInit2", referenced 
from: -[NSData(Gzip) gzipDeflate] in NSData+Gzip.o ld: symbol(s) not found collect2: ld 
returned 1 exit status

Answer 1

In your Target settings window, scroll down to the "Other Linker Flags" section and make sure that -lz is in the field. This will link against the built-in zlib, and your error should go away.

Answer 2

thanks everybody it works perfectly

Answer 3

Hi,

Can anyone help me in knowing, what actually the molecules code do, of one of the following..

a) Does it download the gzip fie using iphone sdk and then uncompress it using zlib. b) or Does it directly download the buffer and utilise it

I have gone through the code, but I didnt got much clear Idea. Please help.

Answer 4

WOW!! I can't believe I wasted around 2 hours trying to figure out why my libraries wouldn't link. You saved my life. I'm eternally grateful to you. :D :D :D

Answer 5

thank you very much Its cleared 8 errors to my project .......