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