gcc-4.1.1 solaris 10 AMD Sun Fire X4100 M2

Old version off gcc was already installed so I used it.

bunzip2 gcc-4.1.1.tar.bz2
/usr/sfw/bin/gtar xvf gcc-4.1.1.tar
cd gcc-4.1.1

We need gnu make
ln -s /usr/sfw/bin/gmake /usr/sbin/make

Env variables
export PATH=/usr/ucb:/usr/sbin:/usr/bin:/usr/local/bin:/usr/ccs/bin:/usr/sfw/bin
export CC=gcc


Configure with recommended options
./configure --with-as=/usr/sfw/bin/gas --with-gnu-as --with-ld=/usr/ccs/bin/ld --without-gnu-ld --enable-languages=c,c++ --enable-shared
make
make install