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Diffstat (limited to 'gcccpuopt.sh')
| -rwxr-xr-x | gcccpuopt.sh | 302 |
1 files changed, 0 insertions, 302 deletions
diff --git a/gcccpuopt.sh b/gcccpuopt.sh deleted file mode 100755 index 0bb452108..000000000 --- a/gcccpuopt.sh +++ /dev/null @@ -1,302 +0,0 @@ -#!/bin/sh - -# Print the gcc cpu specific options appropriate for the current CPU - -# Author: -# http://www.pixelbeat.org/ -# Notes: -# This script currently supports Linux,FreeBSD,Cygwin -# This script is x86 (32 bit) specific -# It should work on any gcc >= 2.95 at least -# It only returns CPU specific options. You probably also want -03 etc. -# Changes: -# V0.1, 12 Mar 2003, Initial release -# V0.2, 01 Jun 2005, Added support for 3.2>=gcc<=4.0 -# V0.3, 03 Jun 2005, Added support for pentium-m -# V0.4, 03 Jun 2005, Fix silly bugs -# V0.5, 07 Jun 2005, Clarify/Simplify confusing floating point expr usage -# Print warning when CPU only supported on a newer gcc -# V0.6, 15 Dec 2006, Added support for Intel Core and Core 2 processors -# Added support for 4.1>=gcc<=4.3 -# Added support for gcc -msse3 option -# Added support for new gcc -march=native option -# V0.7, 18 Dec 2006, Changes from Conor McDermottroe -# Added support for FreeBSD -# Remove bash specific constructs -# Better error handling -# V0.8, 19 Dec 2006, Give warnings and 32 bit -march on 64 bit platforms. -# Previously it just gave an invalid blank -march. -# Reported and tested by Ewan Oughton. -# V0.9, 30 Apr 2007, Give error if compiler not present. -# Warn about rather than default to -march=native option. -# V0.92, 08 Nov 2007, Change from Krzysztof Jankowski to support Cygwin. -# Added support for AMD family 10 processors. -# Add support for gcc -msse4 & -msse5 options. -# Use "prescott" rather than "pentium4" for all -# models >= 3 in intel family 15, not just model 3. -# V0.93, 13 Nov 2007, Oops, actually not all intel family 15, model >= 3 -# are prescotts. Use the sse3 flag to distinguish. -# V0.94, 31 Dec 2007, Oops, actually all intel family 15, model >= 3 -# are prescotts. This was indicated by Adam Drzewiecki. -# I was confused by a bug in older linux kernels where pni -# was not reported for my intel "F41" processor at least. -# V0.95, 18 Jan 2008, Changes from Conor McDermottroe -# Support for Mac OS X -# Support for FreeBSD base system - -if [ "$1" = "--version" ]; then - echo "0.95" && exit -fi - -# This table shows when -march options were introduced into _official_ gcc releases. -# Note there are vendor deviations that complicate this. -# For e.g. redhat introduced the prescott option in 3.3-13. -# gcc-2.95 = i386, i486, i586,pentium, i686,pentiumpro, k6 -# gcc-3.0 += athlon -# gcc-3.1 += pentium-mmx, pentium2, pentium3, pentium4, k6-2, k6-3, athlon-{tbird, 4,xp,mp} -# gcc-3.3 += winchip-c6, winchip2, c3 -# gcc-3.4.0 += k8,opteron,athlon64,athlon-fx, c3-2 -# gcc-3.4.1 += pentium-m, pentium3m, pentium4m, prescott, nocona -# gcc-4.3 += core2, amdfam10 - -[ -z "$CC" ] && CC=gcc - -try_gcc_options() { - $CC $* -S -o /dev/null -xc /dev/null >/dev/null 2>&1 -} - -if ! try_gcc_options; then - echo "Error: Couldn't execute your compiler ($CC)" >&2 - exit 1 -fi - -if try_gcc_options -march=native; then - echo "Warning: Your compiler supports the -march=native option which you may prefer" >&2 -fi - -if ! try_gcc_options -march=i386; then - if ! try_gcc_options -m32 -march=i386; then - echo "Error: This script only supports 32 bit x86 architectures" >&2 - exit 1 - else - echo "Warning: The optimum *32 bit* architecture is reported" >&2 - m32="-m32 " - fi -fi - -try_line() { - skip=0 - for arch in $1; do - if try_gcc_options $m32 -march=$arch; then - echo $arch - return - elif [ "$skip" = "0" ] && [ "$arch" != "native" ]; then - skip=1 - echo "Warning: Newer versions of GCC better support your CPU with -march=$arch" >&2 - fi - done - return 1 -} - -read_cpu_data_linux() { - IFS=":" - while read name value; do - unset IFS - name=`echo $name` - value=`echo $value` - IFS=":" - if [ "$name" = "vendor_id" ]; then - vendor_id="$value" - elif [ "$name" = "cpu family" ]; then - cpu_family="$value" - elif [ "$name" = "model" ]; then - cpu_model="$value" - elif [ "$name" = "flags" ]; then - flags="$value" - break #flags last so break early - fi - done < /proc/cpuinfo - unset IFS -} - -read_cpu_data_freebsd() { - local _line _cpu_id - - if [ ! -r /var/run/dmesg.boot ]; then - echo "/var/run/dmesg.boot does not exist!" - exit 1; - fi - - IFS=" -" - for _line in `grep -A2 '^CPU: ' /var/run/dmesg.boot`; do - if [ -n "`echo $_line | grep '^ Origin = '`" ]; then - vendor_id="`echo $_line | sed -e 's/^ Origin = .//' -e 's/[^A-Za-z0-9].*$//'`" - _cpu_id="`echo $_line | sed -e 's/^.*Id = //' -e 's/ .*$//' -e 'y/abcdef/ABCDEF/'`" - cpu_family=$((($_cpu_id & 0xF0F) >> 8)) - cpu_model=$((($_cpu_id & 0xF0) >> 4)) - fi - if [ -n "`echo $_line | grep '^ Features='`" ]; then - flags="`echo $_line | sed -e 's/^.*<//' -e 's/>.*//' -e 's/,/ /g' | tr 'A-Z' 'a-z'`" - fi - done - unset IFS -} - -read_cpu_data_darwin() { - vendor_id="`/usr/sbin/sysctl -n machdep.cpu.vendor`" - cpu_family="`/usr/sbin/sysctl -n machdep.cpu.family`" - cpu_model="`/usr/sbin/sysctl -n machdep.cpu.model`" - flags="`/usr/sbin/sysctl -n machdep.cpu.features | tr 'A-Z' 'a-z'`" -} - -read_cpu_data() { - # Default values - vendor_id="Unset" - cpu_family="-1" - cpu_model="-1" - flags="" - if [ "`uname`" = "Linux" ]; then - read_cpu_data_linux - elif [ "`uname`" = "FreeBSD" ]; then - read_cpu_data_freebsd - elif [ "`uname | sed 's/\(CYGWIN\).*/\1/'`" = "CYGWIN" ]; then - read_cpu_data_linux - elif [ "`uname`" = "Darwin" ]; then - read_cpu_data_darwin - else - echo "Error: `uname` is not a supported operating system" - exit 1 - fi -} - -read_cpu_data - -if [ "$vendor_id" = "AuthenticAMD" ]; then - if [ $cpu_family -eq 4 ]; then - _CFLAGS="-march=i486" - elif [ $cpu_family -eq 5 ]; then - if [ $cpu_model -lt 4 ]; then - _CFLAGS="-march=pentium" - elif [ \( $cpu_model -eq 6 \) -o \( $cpu_model -eq 7 \) ]; then - _CFLAGS="-march=k6" - elif [ \( $cpu_model -eq 8 \) -o \( $cpu_model -eq 12 \) ]; then - line="k6-2 k6" - elif [ \( $cpu_model -eq 9 \) -o \( $cpu_model -eq 13 \) ]; then - line="k6-3 k6-2 k6" - fi - elif [ $cpu_family -eq 6 ]; then - if [ $cpu_model -le 3 ]; then - line="athlon k6-3 k6-2 k6" - elif [ $cpu_model -eq 4 ]; then - line="athlon-tbird athlon k6-3 k6-2 k6" - elif [ $cpu_model -ge 6 ]; then #athlon-{4,xp,mp} - line="athlon-4 athlon k6-3 k6-2 k6" - fi - elif [ $cpu_family -eq 15 ]; then #k8,opteron,athlon64,athlon-fx - line="k8 athlon-4 athlon k6-3 k6-2 k6" - elif [ $cpu_family -eq 16 ]; then #barcelona,amdfam10 - line="amdfam10 k8 athlon-4 athlon k6-3 k6-2 k6" - fi -elif [ "$vendor_id" = "CentaurHauls" ]; then - if [ $cpu_family -eq 5 ]; then - if [ $cpu_model -eq 4 ]; then - line="winchip-c6 pentium" - elif [ $cpu_model -eq 8 ]; then - line="winchip2 winchip-c6 pentium" - elif [ $cpu_model -ge 9 ]; then - line="winchip2 winchip-c6 pentium" #actually winchip3 but gcc doesn't support this currently - fi - elif [ $cpu_family -eq 6 ]; then - if echo "$flags" | grep -q cmov; then - fallback=pentiumpro - else - fallback=pentium #gcc incorrectly assumes i686 always has cmov - fi - if [ $cpu_model -eq 6 ]; then - _CFLAGS="-march=pentium" # ? Cyrix 3 (samuel) - elif [ $cpu_model -eq 7 ] || [ $cpu_model -eq 8 ]; then - line="c3 winchip2 winchip-c6 $fallback" - elif [ $cpu_model -ge 9 ]; then - line="c3-2 c3 winchip2 winchip-c6 $fallback" - fi - fi -elif [ "$vendor_id" = "GenuineIntel" ]; then - if [ $cpu_family -eq 3 ]; then - _CFLAGS="-march=i386" - elif [ $cpu_family -eq 4 ]; then - _CFLAGS="-march=i486" - elif [ $cpu_family -eq 5 ]; then - if [ $cpu_model -ne 4 ]; then - _CFLAGS="-march=pentium" - else - line="pentium-mmx pentium" #No overlap with other vendors - fi - elif [ $cpu_family -eq 6 ]; then - if [ \( $cpu_model -eq 0 \) -o \( $cpu_model -eq 1 \) ]; then - _CFLAGS="-march=pentiumpro" - elif [ \( $cpu_model -ge 3 \) -a \( $cpu_model -le 6 \) ]; then #4=TM5600 at least - line="pentium2 pentiumpro pentium-mmx pentium i486 i386" - elif [ \( $cpu_model -eq 9 \) -o \( $cpu_model -eq 13 \) ]; then #centrino - line="pentium-m pentium4 pentium3 pentium2 pentiumpro pentium-mmx pentium i486 i386" - elif [ $cpu_model -eq 14 ]; then #Core - line="prescott pentium-m pentium4 pentium3 pentium2 pentiumpro pentium-mmx pentium i486 i386" - elif [ $cpu_model -eq 15 ]; then #Core 2 - line="core2 pentium-m pentium4 pentium3 pentium2 pentiumpro pentium-mmx pentium i486 i386" - elif [ \( $cpu_model -ge 7 \) -a \( $cpu_model -le 11 \) ]; then - line="pentium3 pentium2 pentiumpro pentium-mmx pentium i486 i386" - fi - elif [ $cpu_family -eq 15 ]; then - line="pentium4 pentium3 pentium2 pentiumpro pentium-mmx pentium i486 i386" - if [ $cpu_model -ge 3 ]; then - line="prescott $line" - fi - fi -else - echo "Unknown CPU Vendor: $vendor_id" - exit 1 -fi - -[ -z "$_CFLAGS" ] && _CFLAGS="-march=`try_line "$line"`" - -#SSE is not used for floating point by default in gcc 32 bit -#so turn that on here. -if echo "$flags" | grep -q "sse"; then - if try_gcc_options "-mfpmath=sse"; then #gcc >= 3.1 - _CFLAGS="$_CFLAGS -mfpmath=sse" - fi -fi - -#The SSE options are mostly selected automatically -#when a particular march option is selected. -#There are a few exceptions unfortunately, which we handle here. -#Note the sse instruction lines are: -# intel: [sse4.2] [sse4.1] ssse3 sse3 sse2 sse ... -# amd: [sse5] sse4a [sse3] sse2 sse ... -# The bracketed ones are only available on some cpus -# in a particular family and so need to be added explicitly. -if echo "$_CFLAGS" | grep -q "amdfam10"; then - if echo "$flags" | grep -q "sse5"; then - if try_gcc_options "-msse5"; then #gcc >= 4.3 - _CFLAGS="$_CFLAGS -msse5" - fi - fi -elif echo "$_CFLAGS" | grep -E -q "(k8|c3-2)"; then - if echo "$flags" | grep -E -q "(sse3|pni)"; then - if try_gcc_options "-msse3"; then #gcc >= 3.3.3 - _CFLAGS="$_CFLAGS -msse3" - fi - fi -elif echo "$_CFLAGS" | grep -q "core2"; then - if echo "$flags" | grep -q "sse4_2"; then - if try_gcc_options "-msse4"; then #gcc >= 4.3 - _CFLAGS="$_CFLAGS -msse4" - fi - elif echo "$flags" | grep -q "sse4_1"; then - if try_gcc_options "-msse4.1"; then #gcc >= 4.3 - _CFLAGS="$_CFLAGS -msse4.1" - fi - fi -fi - -echo "$m32$_CFLAGS" \ No newline at end of file |