configure failure

[Karlkneile at aol.com]

I have just installed the current versions of cygwin and gmp.   Cygwin/gcc 
appears to be running ok; I have compiled and run a small test  program.  When 
attempting to configure gmp, I get an error stating that  there is no usable 
m4.  I have no idea what m4 is.  Is this a cygwin  or a gmp file.  Any hints on 
what to try?  I tried this on a different  machine a while back and it failed 
the same way.  
 
Thanks, Karl
 
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