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https://github.com/MariaDB/server.git
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48 lines
1.3 KiB
Text
48 lines
1.3 KiB
Text
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AC_DEFUN([MYSQL_CHECK_CPU],
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[AC_CACHE_CHECK([if compiler supports optimizations for current cpu],
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mysql_cv_cpu,[
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ac_save_CFLAGS="$CFLAGS"
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if test -r /proc/cpuinfo ; then
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cpuinfo="cat /proc/cpuinfo"
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cpu_family=`$cpuinfo | grep 'cpu family' | cut -d ':' -f 2 | cut -d ' ' -f 2 | head -1`
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cpu_vendor=`$cpuinfo | grep 'vendor_id' | cut -d ':' -f 2 | cut -d ' ' -f 2 | head -1`
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fi
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if test "$cpu_vendor" = "AuthenticAMD"; then
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if test $cpu_family -ge 6; then
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cpu_set="athlon pentiumpro k5 pentium i486 i386";
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elif test $cpu_family -eq 5; then
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cpu_set="k5 pentium i486 i386";
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elif test $cpu_family -eq 4; then
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cpu_set="i486 i386"
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else
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cpu_set="i386"
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fi
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elif test "$cpu_vendor" = "GenuineIntel"; then
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if test $cpu_family -ge 6; then
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cpu_set="pentiumpro pentium i486 i386";
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elif test $cpu_family -eq 5; then
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cpu_set="pentium i486 i386";
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elif test $cpu_family -eq 4; then
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cpu_set="i486 i386"
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else
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cpu_set="i386"
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fi
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fi
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for ac_arg in $cpu_set;
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do
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CFLAGS="$ac_save_CFLAGS -mcpu=$ac_arg -march=$ac_arg -DCPU=$ac_arg"
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AC_TRY_COMPILE([],[int i],mysql_cv_cpu=$ac_arg; break;, mysql_cv_cpu="unknown")
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done
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if test "$mysql_cv_cpu" = "unknown"
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then
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CFLAGS="$ac_save_CFLAGS"
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AC_MSG_RESULT(none)
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else
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AC_MSG_RESULT($mysql_cv_cpu)
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fi
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]]))
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