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deb-mbse/cpuflags

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2004-04-04 13:49:05 +00:00
#!/bin/sh
#
# $Id$
#
# Small script to try to find out the CPU optimisation flags.
# Based on ideas found in the NetBSD cpuflags script.
#
OS=`uname -s`
case $OS in
FreeBSD | NetBSD)
if [ -x /sbin/sysctl ]; then
SYSCTL=/sbin/sysctl
elif [ -x /usr/sbin/sysctl ]; then
SYSCTL=/usr/sbin/sysctl
elif [ -x /bin/sysctl ]; then
SYSCTL=/bin/sysctl
else
SYSCTL=/usr/bin/sysctl
fi
hw_machine_arch=`$SYSCTL -n hw.machine_arch`
hw_model=`$SYSCTL -n hw.model`
case $hw_machine_arch in
alpha)
# cpu0 at mainbus0: ID 0 (primary), 21164A-0 (unknown ...
case "`egrep '^cpu0 ' /var/run/dmesg.boot`" in
*[\(\ ]2106[46][-\ \)]*) FLAGS="-mcpu=21064" ;;
*[\(\ ]21164[-\ \)]*) FLAGS="-mcpu=21164" ;;
*[\(\ ]21164A[-\ \)]*) FLAGS="-mcpu=21164a" ;;
*[\(\ ]21264B[-\ \)]*) FLAGS="-mcpu=21264" ;;
esac
;;
i386)
case $hw_model in
*386-class*) FLAGS='-march=i386' ;;
*486-class*) FLAGS='-march=i486' ;;
*AMD\ K6*) FLAGS='-march=k6' ;;
*Pentium*) FLAGS='-march=pentium' ;;
*586-class*) FLAGS='-march=pentium' ;;
*686-class*) FLAGS='-march=pentiumpro' ;;
esac
;;
sparc | sparc64)
case " $hw_model" in # Examples
*[\ \(]MB86900/1A*) FLAGS='-mcpu=cypress' ;; # ss1+
*[\ \(]CY7C601*) FLAGS='-mcpu=cypress' ;; # ss2
*[\ \(]W8601/8701*) FLAGS='-mcpu=cypress' ;; # elc
*[\ \(]MB86904*) FLAGS='-mcpu=supersparc' ;; # ss5 usparc
*[\ \(]MB86907*) FLAGS='-mcpu=supersparc' ;; # ss5 usparc
*[\ \(]TMS390S10*) FLAGS='-mcpu=supersparc' ;; # classic "
*[\ \(]TMS390Z50*) FLAGS='-mcpu=supersparc' ;; # ss10/ss20
*[\ \(]RT620/625*) FLAGS='-mcpu=supersparc' ;; # ss20 ross
*[\ \(]MB86930*) FLAGS='-mcpu=sparclite' ;; # from gcc
*[\ \(]MB86934*) FLAGS='-mcpu=sparclite' ;; # from gcc
# under 1.5.1 -mcpu=ultrasparc chokes egcs-2.91.66 compiling perl
*[\ \(]SUNW,UltraSPARC*) FLAGS='-mcpu=v9' ;; # Ultra
esac
;;
esac
;;
Linux)
hw_machine_arch=`uname -m`
case $hw_machine_arch in
parisc)
case "`egrep 'cpu family' /proc/cpuinfo | cut -d ' ' -f 4`" in
1.0*) FLAGS='-march=1.0' ;;
1.1*) FLAGS='-march=1.1' ;;
2.0*) FLAGS='-march=2.0' ;;
esac
;;
i386)
FLAGS='-march=i386'
;;
i486)
FLAGS='-march=i486'
;;
i586)
FLAGS='-march=pentium'
;;
i686)
FLAGS='-march=pentiumpro'
;;
*)
echo "Unsupported Linux arch $hw_machine_arch"
exit 1
;;
esac
;;
*)
echo "Unsupported OS $OS"
exit 1
;;
esac
# Fixup flags for old gcc
if [ -n "$FLAGS" ]; then
gcc_ver=`gcc -v 2>&1 | awk '/gcc version/ {sub("egcs-","");print $3}'`
FLAGS=`awk -v "flags=$FLAGS" -v "gcc_ver=$gcc_ver" '
{if (gcc_ver < $1){map[$2] = ""$3}}
END{if (flags in map) {print map[flags]}else {print flags}}
' <<EOD
2.90 -mcpu=21164a
2.90 -march=i386 -mno-486
2.90 -march=i486 -m486
2.90 -march=pentium -m486
2.90 -march=pentiumpro -m486
2.90 -mcpu=supersparc -msupersparc
2.90 -mcpu=sparclite -msparclite
2.90 -mcpu=cypress -mcypress
2.90 -mcpu=v9 -mv8
2.90 -mcpu=arm610 -m6
2.90 -mcpu=strongarm110 -m6
2.90 -mcpu=arm710 -m6
2.95 -march=k6 -march=pentium
EOD
`
fi
echo $FLAGS
exit 0