At the first step, run the ./configure, I always get:

configure: error: C preprocessor "gcc" fails sanity check

Any suggestion will be appreciated.

============================================
I have set the following environment settings for this issue:

CC=gcc
CFLAGS=-maix64
COLUMNS=120
CPP=gcc
CPPFLAGS=-maix64
CXX=g++
CXXCPP=g++
CXXFLAGS=-maix64
OBJECT_MODE=64

Note: If I don't set these settings, I can easily pass this two
package's building, but I got too much compiling errors when I build my
applications like

1252-191 Only .llong should be used for relocatable expressions.

============================================
other info and settings:
bash-3.00# which gcc
/usr/local/bin/gcc
bash-3.00# which g++
/usr/local/bin/g++
bash-3.00# gcc -v
Using built-in specs.
Target: powerpc-ibm-aix5.3.0.0
Configured with: ../gcc-4.0.2/configure --disable-nls
Thread model: aix
gcc version 4.0.2
bash-3.00# g++ -v
Using built-in specs.
Target: powerpc-ibm-aix5.3.0.0
Configured with: ../gcc-4.0.2/configure --disable-nls
Thread model: aix
gcc version 4.0.2
bash-3.00#
bash-3.00# which ld
/usr/bin/ld
bash-3.00# ld -V
ld: LD 1.64 (08/19/2003)
bash-3.00# oslevel -r
5300-01
bash-3.00# uname -a
AIX devaix 3 5 000F067F4C00
bash-3.00# bootinfo -K
64
bash-3.00# bootinfo -y
64
bash-3.00#

I got the answer:

CPP="gcc -E"
CXXCPP="g++ -E"

everyone can ask the question related to this topic. mikey38@hotmail.com