From: aj <aj...@vi...> - 2005-01-31 06:14:33
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here is what needs to be done, i am not very familiar with how to setup the makefiles to pass this data.. i hope someone else can figure it out.. aj's modified /allegro4118/makefile.vc optimzed build switches for msvc7 line166: CFLAG = -Gd Uses the __cdecl calling convention -Ox Uses maximum optimization (/Ob2gity /Gs) -GL Enables whole program optimization -GB on MSVC7 this defaults to -G6: Optimizes code to favor the Pentium Pro, Pentium II, and Pentium III processors -GF enable string pooling i also think this could be added for Athlon and P4: -arch:SSE and this for AMD64, P4: -arch:SSE2 the arch instructions could be put on the TARGET_ARCH_EXCL makefile define. so that it will only be there for people who specifically request it. potential problem: using the -GB compiler option genreates code for PPro/P2/P3, what if the end-user is running a P1 ? > > if we consider msvc7 as a different compiler to msvc6 then its easy. > > > > just as you type fix msvc to start the compile process, we could add a > > msvc7 target. > > that way by default using msvc will default to version 6 command line > > options.. and those that want the extra performance can choice msvc7 > >Wondeful. Absolutely wonderful. >This shouldn't even be too hard: just change makefile.vc to set MSVC 6 >options for those switches that haven't been set yet, then make a >makefile.vc7 that sets those options as appropriate for MSVC7 and then >includes makefile.vc. We don't even have to duplicate an entire makefile. >Please, go ahead and make a patch for this. > >Going a bit further, we could even use this to solve the annoying `-mcpu is >deprecated' waring in MinGW... though that'd be less easy as most people >wouldn't readily know what version of MinGW they're using and you can >easily check if the version number is larger than some other version >number. I think this may be a bit too much... it's basically turning >fix.bat into a Windows replacement for configure, which I'll fully admit >is something I miss more and more in Windows... but I'm not sure it's the >right way to go. > >Evert |