Those flags are for gcc-3.x and alike (mostly gcc-3.0, gcc-3.1.1 and gcc-3.2), you may check which gcc you're using with the following command:
|
How to know your gcc version |
| #gcc --version |
You can know which CPU you have with the following command:
|
How to know your CPU type |
| cat /proc/cpuinfo |
This page is for those who don't want to experiment, want a stable system, but still optimized for their processor. Be careful, by using those flags, binaries from your system might not work on another one. So if you compiled with those flags optimized for p4, you cant send a tbz2 or share a hard disk with a friend who only has a pentium MMX.
|
i386 (Intel), do you really want to install gentoo on that ? |
| CHOST="i386-pc-linux-gnu" CFLAGS="-march=i386 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=i386 -O3 -pipe -fomit-frame-pointer" |
|
i486 (Intel), do you really want to install gentoo on that ? |
| CHOST="i486-pc-linux-gnu" CFLAGS="-march=i486 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=i486 -O3 -pipe -fomit-frame-pointer" |
|
Pentium 1 (Intel) |
| CHOST="i586-pc-linux-gnu" CFLAGS="-march=pentium -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=pentium -O3 -pipe -fomit-frame-pointer" |
|
Pentium MMX (Intel) |
| CHOST="i586-pc-linux-gnu" CFLAGS="-march=pentium-mmx -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=pentium-mmx -O3 -pipe -fomit-frame-pointer" |
|
Pentium PRO (Intel) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentiumpro -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=pentiumpro -O3 -pipe -fomit-frame-pointer" |
|
Pentium II (Intel) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium2 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=pentium2 -O3 -pipe -fomit-frame-pointer" |
|
Celeron (Mendocino), aka Celeron1 (Intel) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium2 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=pentium2 -O3 -pipe -fomit-frame-pointer" |
|
Pentium III (Intel) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium3 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=pentium3 -O3 -pipe -fomit-frame-pointer" |
|
Celeron (Coppermine) aka Celeron2 (Intel) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium3 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=pentium3 -O3 -pipe -fomit-frame-pointer" |
|
Celeron (Willamette?) (Intel) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium4 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=pentium4 -O3 -pipe -fomit-frame-pointer" |
|
Pentium 4 (Intel) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium4 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=pentium4 -O3 -pipe -fomit-frame-pointer" |
|
Eden C3/Ezra (Via) |
| CHOST="i586-pc-linux-gnu" CFLAGS="-march=i586 -m3dnow -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=i586 -m3dnow -O3 -pipe -fomit-frame-pointer" |
quote : the ezra doesn't have any special instructions that you could optimize for, just consider is a K6-3...basically a p2 with 3dnow
|
K6 (AMD) |
| CHOST="i586-pc-linux-gnu" CFLAGS="-march=k6 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=k6 -O3 -pipe -fomit-frame-pointer" |
|
K6-2 (AMD) |
| CHOST="i586-pc-linux-gnu" CFLAGS="-march=k6-2 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=k6-2 -O3 -pipe -fomit-frame-pointer" |
|
K6-3 (AMD) |
| CHOST="i586-pc-linux-gnu" CFLAGS="-march=k6-3 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=k6-3 -O3 -pipe -fomit-frame-pointer" |
|
Athlon (AMD) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=athlon -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=athlon -O3 -pipe -fomit-frame-pointer" |
|
Athlon-tbird, aka K7 (AMD) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=athlon-tbird -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=athlon-tbird -O3 -pipe -fomit-frame-pointer" |
|
Athlon-tbird XP (AMD) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer" |
|
Athlon 4(AMD) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=athlon-4 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=athlon-4 -O3 -pipe -fomit-frame-pointer" |
|
Athlon XP (AMD) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer" |
|
Athlon MP (AMD) |
| CHOST="i686-pc-linux-gnu" CFLAGS="-march=athlon-mp -O3 -pipe -fomit-frame-pointer" CXXFLAGS="-march=athlon-mp -O3 -pipe -fomit-frame-pointer" |
|
603 (PowerPC) |
| CHOST="powerpc-unknown-linux-gnu" CFLAGS="-O3 -pipe CXXFLAGS="-O3 -pipe |
|
603e (PowerPC) |
| CHOST="powerpc-unknown-linux-gnu" CFLAGS="-O3 -pipe CXXFLAGS="-O3 -pipe |
|
604 (PowerPC) |
| CHOST="powerpc-unknown-linux-gnu" CFLAGS="-O3 -pipe CXXFLAGS="-O3 -pipe |
|
604e (PowerPC) |
| CHOST="powerpc-unknown-linux-gnu" CFLAGS="-O3 -pipe CXXFLAGS="-O3 -pipe |
|
750 aka as G3 (PowerPC) |
| CHOST="powerpc-unknown-linux-gnu" CFLAGS="-mcpu=750 -O3 -pipe -mpowerpc-gfxopt" CXXFLAGS="-mcpu=750 -O3 -pipe -mpowerpc-gfxopt" |
Note: do not use -march=
|
7400, aka G4 (PowerPC) |
| CHOST="powerpc-unknown-linux-gnu" CFLAGS="-mcpu=7400 -O2 -pipe -maltivec -mabi=altivec -mpowerpc-gfxopt" CXXFLAGS="-mcpu=7400 -O2 -pipe -maltivec -mabi=altivec -mpowerpc-gfxopt" -maltivec -mabi=altivec -mpowerpc-gfxopt" |
Note: do not use -march=
Note: -O3 is unstable on G4
|
7450, aka G4 second generation (PowerPC) |
| CHOST="powerpc-unknown-linux-gnu" CFLAGS="-mcpu=7450 -O2 -pipe -maltivec -mabi=altivec -mpowerpc-gfxopt" CXXFLAGS="-mcpu=7450 -O2 -pipe -maltivec -mabi=altivec -mpowerpc-gfxopt" |
Note: do not use -march=
Note: -O3 is unstable on G4
|
PowerPC (If you don't know which one) |
| CHOST="powerpc-unknown-linux-gnu" CFLAGS="-O3 -pipe -mpowerpc-gfxopt" CXXFLAGS="-O3 -pipe -mpowerpc-gfxopt" |
|
Sparc |
| CHOST="sparc-unknown-linux-gnu" CFLAGS="-O3 -pipe -fomit-frame-pointer" CXXFLAGS="-O3 -pipe -fomit-frame-pointer" |
|
Sparc 64 |
| CHOST="sparc64-unknown-linux-gnu" CFLAGS="-O3 -pipe -fomit-frame-pointer" CXXFLAGS="-O3 -pipe -fomit-frame-pointer" |
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