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110 lines
2.3 KiB
Bash
Executable file
110 lines
2.3 KiB
Bash
Executable file
#!/bin/sh
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#
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# Check cpu of current machine and find the
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# best compiler optimization flags for gcc
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#
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#
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if test -r /proc/cpuinfo ; then
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cpuinfo="cat /proc/cpuinfo"
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cpu_family=`$cpuinfo | grep 'family' | cut -d ':' -f 2 | cut -d ' ' -f 2 | head -1`
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if test -z "$cpu_family" ; then
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cpu_family=`$cpuinfo | grep 'cpu' | cut -d ':' -f 2 | cut -d ' ' -f 2 | head -1`
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fi
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cpu_vendor=`$cpuinfo | grep 'vendor_id' | cut -d ':' -f 2 | cut -d ' ' -f 2 | head -1`
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model_name=`$cpuinfo | grep 'model name' | cut -d ':' -f 2 | head -1`
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if test -z "$model_name" ; then
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model_name=`$cpuinfo | grep 'cpu model' | cut -d ':' -f 2 | head -1`
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fi
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if test -z "$model_name" ; then
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model_name=`uname -m`
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fi
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else
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# Fallback when there is no /proc/cpuinfo
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case "`uname -s`" in
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FreeBSD)
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cpu_family=`uname -m`;
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model_name=`sysctl -b hw.model`
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;;
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*)
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cpu_family=`uname -m`;
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model_name="unknown";
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;;
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esac
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fi
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cpu_flag=""
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cpu_flag_old=""
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case "$cpu_family--$model_name" in
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Alpha*EV6*)
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cpu_flag="ev6";
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;;
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*Xeon*)
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cpu_flag="nocona";
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;;
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*Pentium*4*Mobile*CPU*)
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cpu_flag="pentium4m";
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;;
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*Pentium*4*CPU*)
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cpu_flag="pentium4";
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;;
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*Pentium*III*Mobile*CPU*)
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cpu_flag="pentium3m";
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;;
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*Pentium*III*CPU*)
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cpu_flag="pentium3";
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;;
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*Athlon*64*)
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cpu_flag="athlon64";
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cpu_flag_old="athlon";
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;;
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*Athlon*)
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cpu_flag="athlon";
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;;
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*Itanium*)
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# Don't need to set any flags for itanium(at the moment)
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cpu_flag="";
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;;
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*ppc)
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cpu_flag="powerpc";
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;;
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*)
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cpu_flag="";
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;;
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esac
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if test -z "$cpu_flag"; then
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echo "BUILD/check-cpu: Oops, could not findout what kind of cpu this machine is using."
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check_cpu_flags=""
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return
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fi
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echo "cpu_flag: $cpu_flag"
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if test -z "$CC" ; then
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cc="gcc";
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else
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cc=$CC
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fi
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cc_ver=`$cc --version | sed 1q`
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cc_verno=`echo $cc_ver | sed -e 's/[^0-9. ]//g; s/^ *//g; s/ .*//g'`
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case "$cc_ver--$cc_verno" in
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*GCC*--3.4*|*GCC*--3.5*|*GCC*--4.*)
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check_cpu_cflags="-mtune=$cpu_flag -march=$cpu_flag"
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;;
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*GCC*)
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# Fix for older compiler versions
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if test -n "$cpu_flag_old"; then
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cpu_flag="$cpu_flag_old"
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fi
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check_cpu_cflags="-mcpu=$cpu_flag -march=$cpu_flag"
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;;
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*)
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check_cpu_cflags=""
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;;
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esac
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echo $check_cpu_cflags
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