kompilace jadra pro pentium4

[Zdenek Pytela]

petr cezar píše:
> dobry den,
> 
> rad bych si konecne zkusil kompilaci jadra a to pro procesor, ktery me 
> loni zbavil veskerych mych uspor
> 
> mam red hat 9.0 s jejich jadrem 2.4.20-8
> 
> v adresari se zdrojakem je podadresar 'configs', ktery tam 
> (predpokladam) vytvorily kluci z cerveneho klobouku
> 
> prekopiroval jsem tedy jejich './configs/kernel-2.4.20-i686.config' na 
> './.config' a spustil 'make xconfig'. tam jsem pouze skrome priznal, 
> ze nemam nejaky lecjaky i686 nybrz primo pentium4 a konfiguraci ulozil
> 
> pak dam 'make dep' a nakonec 'make install' a pak koukam, ze se pri 
> kompilaci jednotlivych souboru neustale objevuje '-march=i686' ...?
> 
> ja jsem cekal spise '-march=pentium4 -mcpu=pentium4', ne?
> 
> gcc v rh-9.0 uz pentium4 zna, nebo ne? nemusi se jeste nekde neco 
> nastavit? a nebo je to ok a vse se deje tak jak ma?
gcc (1), info gcc
...
       -mcpu=cpu-type
           Tune to cpu-type everything applicable about the generated code,
           except for the ABI and the set of available instructions.  The
           choices for cpu-type are i386, i486, i586, i686, pentium,
pentium-
           mmx, pentiumpro, pentium2, pentium3, pentium4, k6, k6-2, k6-3,
           athlon, athlon-tbird, athlon-4, athlon-xp and athlon-mp.

           While picking a specific cpu-type will schedule things appropri-
           ately for that particular chip, the compiler will not generate
any
           code that does not run on the i386 without the -march=cpu-type
           option being used.  i586 is equivalent to pentium and i686 is
           equivalent to pentiumpro.  k6 and athlon are the AMD chips as
           opposed to the Intel ones.

       -march=cpu-type
           Generate instructions for the machine type cpu-type.  The choices
           for cpu-type are the same as for -mcpu.  Moreover, specifying
           -march=cpu-type implies -mcpu=cpu-type.
...
a archiv konference

-- 

--Zdeněk Pytela, <letty na mrakoplas.phil.muni.cz>