I've downloaded the latest release of libzip and am currently trying to build it on OSX and failing:
Linking C shared library libzip.dylib
Undefined symbols for architecture x86_64:
"_crc32", referenced from:
__zip_filerange_crc in zip_filerange_crc.o
_crc_read in zip_source_crc.o
_decrypt in zip_source_pkware.o
__zip_string_crc32 in zip_string.o
(maybe you meant: __zip_string_crc32)
"_deflate", referenced from:
_compress_read in zip_source_deflate.o
(maybe you meant: _zip_source_deflate)
"_deflateEnd", referenced from:
_deflate_compress in zip_source_deflate.o
"_deflateInit2_", referenced from:
_deflate_compress in zip_source_deflate.o
"_inflate", referenced from:
_decompress_read in zip_source_deflate.o
"_inflateEnd", referenced from:
_deflate_decompress in zip_source_deflate.o
"_inflateInit2_", referenced from:
_deflate_decompress in zip_source_deflate.o
"_zError", referenced from:
__zip_error_strerror in zip_error_strerror.o
_zip_error_to_str in zip_error_to_str.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [libzip.3.0.dylib] Error 1
make[2]: *** [CMakeFiles/zip.dir/all] Error 2
make[1]: *** [CMakeFiles/zip.dir/rule] Error 2
make: *** [zip] Error 2
It needs a crc32 function but it doesn't include one nor does it seem to link to anything else. Has anyone been able to build libzip on OSX 10.9?
You seem to be missing to link a against libz.
Get the developer files for zlib somewhere and add -lz to the link command.
来源：https://stackoverflow.com/questions/20424110/crc32-missing-when-building-libzip-on-osx-10-9