Ever since a thread was posted a while back I have been maintaining my own "How to Compile" document. I am looking for more compiler options for my particular configurations. The compiler is GCC 3.3.x Here is what I have:

Athlon Linux ( originally posted in a previous thread)
CPPFLAGS = -mcpu=athlon-xp -march=athlon-xp -O3 -pipe -mfpmath=sse -m3dnow -msse -mmmx -funroll-loops -fomit-frame-pointer -s -static

Intel Xeon RHEL v3.0
CPPFLAGS = -O3 -pipe -mfpmath=sse -m3dnow -msse -mmmx -funroll-loops
-fomit-frame-pointer -s -static

Ultra Sparc (II-IV) Solaris (5.8,5.9)
CPPFLAGS = -O3 -pipe -funroll-loops -fomit-frame-pointer -s -static

Does anyone with more compiling experience have any suggestions. I am trying to squeeze out as much performance as I can.

Also is there anyway to compile in the libstdc++.so.5 library so that I do not have to set my LD_LIBRARY_PATH?

Thanks,
Brian

Somehow you´re missunderstanding the gcc compiler flags.
1. mcpu=athlon-xp is used for optimizing towards an athlon-xp while keeping backward comatibility it´s overwritten by -march=athlon-xp wich optimises code only working on athlon-xp´s.

2. -O3 includes -expensive-optimisations that means to gcc to include flags like -m3dnow - msse -mmmx

3. you should´nt use -funroll-loops (slows the client a bit down) and -static (only use the flag if you crosscompiling to make code executable on athlon,athon-tbird,athlon-mp and athlon-4 on different linux distributions (somehow like SETI does NO optimization and compatible to i386 so every "idiot" can run it on linux)

Take alook here http://www.freehackers.org/gentoo/gccflags/flag_gcc3opt.html