gzread, gzdopen, gzclose not found

[Robert Body]

Hi, I am trying to compile ClanLib, and I have zLib installed, I thought 
that's where these 3 gz function are from... but my Make does not find them

-Robert
(I have)

zlib                    1.2.2-2
    Cygwin DLL version info:
        DLL version: 1.5.18
        DLL epoch: 19
        DLL bad signal mask: 19005
        DLL old termios: 5
        DLL malloc env: 28
        API major: 0
        API minor: 132
        Shared data: 4
        DLL identifier: cygwin1
        Mount registry: 2
        Cygnus registry name: Cygnus Solutions
        Cygwin registry name: Cygwin
        Program options name: Program Options
        Cygwin mount registry name: mounts v2
        Cygdrive flags: cygdrive flags
        Cygdrive prefix: cygdrive prefix
        Cygdrive default prefix:
        Build date: Sat Jul 2 20:30:04 EDT 2005
        Shared id: cygwin1S4

-----------------------------------------------
Building Libs/libclanApp.so
Libs/libclanCore.a(datafile_inputprovider.o): In function 
`_ZNSt11_Deque_baseI18CL_Zipped_PositionSaIS0_EED2Ev':
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ext/new_allocator.h:(.text+0x65): 
undefined reference to `_gzread'
Libs/libclanCore.a(datafile_inputprovider.o): In function 
`_ZN23CL_InputSource_Datafile4openEv':
/home/Owner/utils/ClanLib-0.6.5/Sources/Core/IOData/Generic/datafile_inputprovider.cpp:199: 
undefined reference to `_gzdopen'
Libs/libclanCore.a(datafile_inputprovider.o): In function 
`_ZN23CL_InputSource_Datafile5closeEv':
/home/Owner/utils/ClanLib-0.6.5/Sources/Core/IOData/Generic/datafile_inputprovider.cpp:218: 
undefined reference to `_gzclose'
collect2: ld returned 1 exit status
make: *** [Libs/libclanApp.so] Error 1



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