portupgrade and USE_GCC=3.3

[Herbert]

Hei!

When I try to rebuild centericq with g++33 using portupgrade I end up in
hundreds of make processes.

# portupgrade -f centericq -M USE_GCC=3.3

After a few seconds:

% ps xa |grep make |wc -l
     398

The same happens if I do 

# make USE_GCC=3.3 install clean
# make USE_GCC=3.3 clean

make: Max recursion level (500) exceeded.: Resource temporarily
unavailable
make: Max recursion level (500) exceeded.: Resource temporarily
unavailable

Although

# make USE_GCC=3.3 ; make install clean

works.

% uname -sr
FreeBSD 5.1-RELEASE-p2

The same happens with other ports (tested with fltk and qt32).

Am I doing something wrong or is this a bug?

Herbert