Trouble compiling nmap 3.20 on OS X

[Saul Good <dark3lf () mac com>]

I'm really sorry to have to trouble you guys with such a noob question, 
but here goes: For some reason, I am having trouble compiling nmap 3.20 
on OS X.  During ./configure operations, it quickly quits and spits out 
this error:

checking for g++... g++
checking for C++ compiler default output... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking build system type... powerpc-apple-darwin6.4
checking host system type... powerpc-apple-darwin6.4
checking for gethostent... no
checking for gethostent in -lnsl... no
checking for setsockopt... no
checking for setsockopt in -lsocket... no
checking for nanosleep... no
checking for nanosleep in -lposix4... no
checking how to run the C preprocessor... /lib/cpp
configure: error: C preprocessor "/lib/cpp" fails sanity check

I am using 10.2.4 with a plain vanilla Dec 2002 developer package.  I 
know the dev tools are sane as I've built many other applications.  Any 
help would be greatly appreciated.

tia
-sg


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