[newbie] Using precompiled kernel

[Pascal Touch]

I downloaded kernel-2.4.1-5mdk.src.rpm.
Did rpm --rebuild kernel-2.4.1-3mdk.src.rpm
Got error message :

error: failed build dependencies:
        libbinutils2-devel is needed by kernel-2.4.1-5mdk
        egcs is needed by kernel-2.4.1-5mdk

OK I didn't install egcs. I know it's on my distro. No problem with that. But 
where can I find libbinutils2-devel ? Couldn't find it on ftp sites.
Anybody can give me a hint?