Failed to build mkfs.jffs2

[yh at bizmail.com.au]

Hi,

I am using the version mtd-20050122 for a linux arm system, I can build 
mtd under arm-linux-gcc, but failed to build a host tool mkfs.jffs2 by 
"make CC=cc" in util directory on FC5. Please see following error 
messages. Is there any way to fix it, rather than to change a new version?

compr_zlib.c:65: error: ‘z_stream’ has no member named ‘zalloc'
compr_zlib.c:66: error: ‘z_stream’ has no member named ‘zfree’

Thanks.

Jim