Problem building gcc 3.2 on powerpc-ibm-aix5.1.0.0

[Brendan_E_Martin at vfc dot com]

Getting the following output at the end of build attempts:

make[3]: Leaving directory `/usr/local/build/gcc/intl'
cc -c -DIN_GCC    -g    -DHAVE_CONFIG_H    -I. -I.
-I/usr/local/src/gcc-3.2/gcc -I/usr/local/src/gcc-3.2/gcc/.
-I/usr/local/src/gcc-3.2/gcc/config -I/usr/local/src/gcc-3.2/gcc/../include
/usr/local/src/gcc-3.2/gcc/tradcif.c -o tradcif.o
"tradcif.y", line 222.17: 1506-196 (W) Initialization between types
"unsigned char*" and "const unsigned char*" is not allowed.
"tradcif.y", line 319.12: 1506-068 (W) Operation between types "unsigned
char*" and "const unsigned char*" is not allowed.
"tradcif.y", line 438.1: 1506-343 (S) Redeclaration of parse_escape differs
from previous declaration on line 35 of "tradcif.y".
"tradcif.y", line 438.1: 1506-381 (I) The type "const unsigned char**" of
parameter 1 in the prototype declaration is not compatible with the
corresponding parameter type "unsigned char**" in the nonprototype
declaration.
make[2]: *** [tradcif.o] Error 1
make[2]: Leaving directory `/usr/local/build/gcc'
make[1]: *** [stage1_build] Error 2
make[1]: Leaving directory `/usr/local/build/gcc'
make: *** [bootstrap] Error 2

I saw a similar question involving AIX 4.3.3 for which the recommendation
was to touch all the .y files and make sure that bison is available.  I
attempted to build bison, but got an error about M4 1.4 being required.  I
could find no references to M4 at gnu.org.

Any recommendations will be appreciated.

Brendan Martin