An unnamed Administration source, James McDonald, wrote:
% People,
%
% I have a Pentium III 600 with 512MB RAM running mdk9.1.
%
% I have been compiling and installing stuff using the compiler flags in
% douglas's mozilla from source sxs namely |'-O3 -march=i686 -mcpu=i686' ?
In most cases, "-O2" is preferable and will certainly speed up the
compilation. Using "-march=i686" implies "-mcpu=i686", so you don't
have to use "-mcpu=i686" if you specify "-march=i686". Depending on your
compiler version, you can use "-march=pentium3" instead of "-march=i686".
Other optimization options you can use for the Pentium III include
"-mfpmath=sse", "-msse", "-msse2", and "-mmmx".
Kurt