zLib 链接错误 XCode 4，未定义的符号
链接错误：
Undefined symbols for architecture i386: "_unzOpen", referenced from:
我的 xcode 项目中有一个 libz.dylib （构建阶段/链接二进制文件与库） 还可以看到 -lz 链接标志
Ld Debug/DemoOSX_d.app/Contents/MacOS/DemoOSX_d normal i386
cd /Projects/Scorpio/DemoOSX
setenv MACOSX_DEPLOYMENT_TARGET 10.7
/Developer/usr/bin/clang++ -arch i386 -isysroot /Developer/SDKs/MacOSX10.7.sdk -L/Projects/Scorpio/DemoOSX/Debug -L/Projects/Scorpio/DemoOSX/../LibMacOS -F/Projects/Scorpio/DemoOSX/Debug -F/Developer/SDKs/MacOSX10.7.sdk/usr/lib -filelist /Projects/Scorpio/DemoOSX/Debug/DemoOSX.build/Objects-normal/i386/DemoOSX_d.LinkFileList -mmacosx-version-min=10.7 -lz /Projects/Scorpio/DemoOSX/../LibMacOS/SysAudio_d.a /Projects/Scorpio/DemoOSX/../LibMacOS/SysUtils_d.a -lexpat -logg -lvorbis -lvorbisfile /Projects/Scorpio/DemoOSX/../LibMacOS/SysMath_d.a /Projects/Scorpio/DemoOSX/../LibMacOS/SysMemManager_d.a -framework OpenAL -framework SDL -framework Cocoa -o /Projects/Scorpio/DemoOSX/Debug/DemoOSX_d.app/Contents/MacOS/DemoOSX_d
1) 尝试在文件检查器中检查扩展名 - mach o 动态库
2) 尝试构建 32/64 位应用程序
3) 添加其他链接器标志“usr/lib/libz.dylib”
4) 尝试添加标头搜索路径 /usr/include
没有任何帮助:(，可能需要自行构建
ARCHS 32 位英特尔 SDK_ROOT最新10.7 GCC_VERSION 苹果 LLVM 3.0
link err:
Undefined symbols for architecture i386: "_unzOpen", referenced from:
I have a libz.dylib in my xcode project (Build Phases/Link binaries with library)
also can see -lz link flag
Ld Debug/DemoOSX_d.app/Contents/MacOS/DemoOSX_d normal i386
cd /Projects/Scorpio/DemoOSX
setenv MACOSX_DEPLOYMENT_TARGET 10.7
/Developer/usr/bin/clang++ -arch i386 -isysroot /Developer/SDKs/MacOSX10.7.sdk -L/Projects/Scorpio/DemoOSX/Debug -L/Projects/Scorpio/DemoOSX/../LibMacOS -F/Projects/Scorpio/DemoOSX/Debug -F/Developer/SDKs/MacOSX10.7.sdk/usr/lib -filelist /Projects/Scorpio/DemoOSX/Debug/DemoOSX.build/Objects-normal/i386/DemoOSX_d.LinkFileList -mmacosx-version-min=10.7 -lz /Projects/Scorpio/DemoOSX/../LibMacOS/SysAudio_d.a /Projects/Scorpio/DemoOSX/../LibMacOS/SysUtils_d.a -lexpat -logg -lvorbis -lvorbisfile /Projects/Scorpio/DemoOSX/../LibMacOS/SysMath_d.a /Projects/Scorpio/DemoOSX/../LibMacOS/SysMemManager_d.a -framework OpenAL -framework SDL -framework Cocoa -o /Projects/Scorpio/DemoOSX/Debug/DemoOSX_d.app/Contents/MacOS/DemoOSX_d
1) tried check extension in file inspector - mach o dynamic library
2) tried build 32/64 bit app
3) add other linker flags "usr/lib/libz.dylib"
4) tried add header search path /usr/include
nothing help:(, probably need to build itself
ARCHS 32bit intel
SDK_ROOT Latest 10.7
GCC_VERSION Apple LLVM 3.0
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unzOpen函数是“minizip”的一部分，“minizip”是 zlib 的一个附加组件，但不包含在 Apple 版本的 zlib 中。您需要访问 zlib.net 获取 minizip 的源代码。The
unzOpenfunction is part of "minizip", an add-on to zlib that is not included in Apple's version of zlib. You need to go to zlib.net to get the source code for minizip.