i've deleted the builds already, but if you are interested i could rebuild them and send them to you.

i don't think it's my cache:

using "--enable-core-inline" put my builds using gcc-3.4.2 and gcc-4.1.0 and yours all within close to the same speed. i guess forgetting to add that is what gave mine the ~10% speed increase. i guess i can now ditch gcc-3.4.2 and stick with only using 4.1.0 since i only kept 3.4.2 just for dosbox, …

for dosbox i use gcc-3.4.2 as mentioned in an earlier post as it produces the fastest version of dosbox for me (i've benched dosbox with gcc-3.4.2, 3.4.5, 4.0.2, 4.0.3, and 4.1.0). i used -march=athlon-xp as one of my flags when i rebenched that time around but when i used march=athlon-xp the speed …

hey thnx for the heads up on dosbox & the sse math, it's been too long since i've tried using other cflag options. since i had some free time this evening i decided to rebench with some different cflag options and the one that produced the fastest code was: configure CFLAGS="-g -O3 -pipe -fomit- …

you don't have to have -msse if you use -march with an appropriate cpu w/sse since it will be automatically turned on. as for -mfpmath, i've seen improvements with other stuff so it's become a standard flag with anything i compile.

messing around with cflags can get UGLY, but if you feel the need to beat yourself up: http://gcc.gnu.org/onlinedocs/gcc-3.4.6/gcc/i386-and-x86_002d64-Options.html http://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html but if you really want to try to build your own, these might help but don't …

most probs i saw and also ran into was trying to do the entire thing. with what i posted has worked for me. the key i've found is using the mingw installer to install another copy to another folder. then pretty much copy/paste what i posted. but i'm sure we've bored everyone else on the subject of …

i've had troubles getting the entire system to compile/upgrade, but all you really need is the core + g++ so here are a few mirrors: ftp://ftp.mirrorservice.org/sites/sources.redhat.com/pub/gcc/releases/gcc-4.1.0/gcc-core-4.1.0.tar.gz ftp://ftp.mirrorservice.org/sites/sources.redhat.com/pub/gcc/ …

make CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer -ffast-math -mfpmath=sse" CXXFLAGS="-mthreads -fno-omit-frame-pointer -O2 -march=pentium4 -pipe -mfpmath=sse" LDFLAGS=-s bootstrap

"-march=pentium4" and "mfpmath=sse" is just as important too.

hey animeg, what is your cpu?

pay attention in the CFLAGS that i use "-march=athlonx-xp" and "mfpmath=sse" as the lowest cpu i always compile for is the a-xp so i include these will all my builds, they really are not neccessary for compling gcc, but that's just me.

i'll try to keep this as simple as i can. this is what i did for multi installs of gcc: install whatever version of mingw you are using in a folder, ex: c:\mingw\3.4.2 instead of c:\mingw then install msys. then say you want to also use 4.1.0 so install another copy of gcc to another folder, ex: c:\ …

do you have any experience with compiling source code? if so you might be better off compiling a version for yourself with cpu optimizations for your own specific cpu (amd athlon xp; intel pentium 3, pentium 4). as for myself, i've tried several different compiles with different versions of gcc and …