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https://github.com/game-stop/veejay.git
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58 lines
843 B
Bash
Executable File
58 lines
843 B
Bash
Executable File
#!/bin/sh
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# simple script that detects march setting for this computer
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# only for gcc
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if test x"$CC" = x; then
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CC=gcc
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fi
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target=$1
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cc_version=`$CC -dumpversion`
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_cc_major=`echo $cc_version | cut -d'.' -f1`
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_cc_minor=`echo $cc_version | cut -d'.' -f2`
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do_cc()
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{
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$CC -o conftest conftest.c $@ >/dev/null 2>&1
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}
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extcheck()
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{
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cat > conftest.c <<EOF
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#include <signal.h>
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void catch() { exit(1); }
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int main(void){
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signal(SIGILL, catch);
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__asm__ __volatile__ ("$1":::"memory");
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exit(0);
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}
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EOF
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do_cc
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if test -x ./conftest; then
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./conftest
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if test $? -ne 0; then
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return 1
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fi
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return 0
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else
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return 1
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fi
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}
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cat > conftest.c << EOF
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int main(void) { return 0; }
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EOF
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arch=`$CC -march=native -Q --help=target|grep -- '-march='|cut -f3`
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do_cc -march=$arch
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if test $? -ne 0; then
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arch=
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fi
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echo "-march=$arch"
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