sudo ./configure CFLAGS="-arch i386 -arch x86_64" CXXFLAGS="-arch i386 -arch x86_64" LDFLAGS="-arch i386 -arch x86_64"

On OS X, use the "--with-archflags" option to build with the correct set of
architectures:

    ./configure --with-archflags="-arch i386 -arch x86_64" ...

./configure --with-archflags="-arch i386 -arch x86_64"
make
sudo make install