zlib compilation failures

I got the most recent snapshot of the MTD and JFFS2 and try to compile it, but it fails on the following errors. The kernel is 2.4.18. Any ideas on whats wrong?

Thanks!

ppc_405-gcc -D__KERNEL__ -I/home/jds/PPC_DEV/WT405_LINUX/linux/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-common -g -ggdb -I/home/jds/PPC_DEV/WT405_LINUX/linux/arch/ppc -fsigned-char -msoft-float -pipe -ffixed-r2 -Wno-uninitialized -mmultiple -mstring -Wa,-m405 -DKBUILD_BASENAME=zlib -DEXPORT_SYMTAB -c zlib.c
zlib.c:72: `deflate' undeclared here (not in a function) zlib.c:72: initializer element is not constant
zlib.c:72: (near initialization for __ksymtab_deflate.value') zlib.c:73: deflateInit_' undeclared here (not in a function) zlib.c:73: initializer element is not constant
zlib.c:73: (near initialization for __ksymtab_deflateInit_.value') zlib.c:74: deflateInit2_' undeclared here (not in a function) zlib.c:74: initializer element is not constant
zlib.c:74: (near initialization for __ksymtab_deflateInit2_.value') zlib.c:75: deflateEnd' undeclared here (not in a function) zlib.c:75: initializer element is not constant
zlib.c:75: (near initialization for __ksymtab_deflateEnd.value') zlib.c:76: deflateSetDictionary' undeclared here (not in a function) zlib.c:76: initializer element is not constant
zlib.c:76: (near initialization for __ksymtab_deflateSetDictionary.value') zlib.c:77: deflateCopy' undeclared here (not in a function) zlib.c:77: initializer element is not constant
zlib.c:77: (near initialization for __ksymtab_deflateCopy.value') zlib.c:78: deflateReset' undeclared here (not in a function) zlib.c:78: initializer element is not constant
...

zlib.c: In function `inflate_codes_free':
zlib.c:4864: structure has no member named `zfree'
zlib.c:4864: structure has no member named `opaque'
zlib.c: At top level:
zlib.c:5170: warning: function declaration isn't a prototype zlib.c:5374: warning: function declaration isn't a prototype zlib.c:5374: `adler32' used prior to declaration
zlib.c:5374: warning: adler32' was previously implicitly declared to return int' make[2]: *** [zlib.o] Error 1
make[2]: Leaving directory `/home/jds/PPC_DEV/WT405_LINUX/linux/lib' make[1]: *** [first_rule] Error 2
make[1]: Leaving directory `/home/jds/PPC_DEV/WT405_LINUX/linux/lib'
make: *** [_dir_lib] Error 2
Make status: 2
***** Build Failure -make bzImage *****