problem with gcc-3.4.0

[keith.briggs at bt.com]

I just upgraded my redhat linux 8 system to gcc-3.4.0, and now I cannot build gmp-4.1.2.
Can anybody suggest what I can try to fix this?
Thank you,
Keith

install at sodium:~/gmp-4.1.2/mpz> /usr/local/bin/gcc -DHAVE_CONFIG_H -I. -I. -I.. -D__GMP_WITHIN_GMP -I.. -g -O2 -fomit-frame-pointer -mcpu=pentium4 -march=pentium4 -c aorsmul.c
`-mcpu=' is deprecated. Use `-mtune=' or '-march=' instead.

aorsmul.c:44: error: conflicting types for '__gmpz_aorsmul'
aorsmul.c:39: error: previous declaration of '__gmpz_aorsmul' was here
aorsmul.c:44: error: conflicting types for '__gmpz_aorsmul'
aorsmul.c:39: error: previous declaration of '__gmpz_aorsmul' was here 

	Dr. Keith M. Briggs
	Senior Mathematician, Complexity Research, BT Exact
	http://more.btexact.com/people/briggsk2/ (internet)
	http://research.btexact.com/teralab/keithbriggs.html (BT intranet)
	phone: +44(0)1473  work: 641 911 home: 610 517  fax: 642 161
	mail: Keith Briggs, Polaris 134, Adastral Park, Martlesham, Suffolk IP5 3RE, UK