problem to compile 7.0.2

Hello
I downloaded the postgresql 7.0.2 source package,
read instructions for installation.
When I try to configure it as root with the
"./configure" command, I have an error:

...
checking setting debug compiler flag... using
default
checking for c++... no
checking for g++... no
checking for gcc... gcc
checking whether the C++ compiler (gcc   )
works... no
configure: error: installation or configuration
problem: C++
compiler cannot create executables.

I work with a Suse6.3 distribution and I think my
gcc is ok :
# gcc --version
2.7.2.3

Do you have an idea

Thanks
Lionel
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