#!/usr/bin/awk -f

BEGIN {
    while (!/flags/) if (getline < "/proc/cpuinfo" != 1) exit 1
    if (/lm/&&/cmov/&&/cx8/&&/fpu/&&/fxsr/&&/mmx/&&/syscall/&&/sse2/) level = 1
    if (level == 1 && /cx16/&&/lahf/&&/popcnt/&&/sse4_1/&&/sse4_2/&&/ssse3/) level = 2
    if (level == 2 && /avx/&&/avx2/&&/bmi1/&&/bmi2/&&/f16c/&&/fma/&&/abm/&&/movbe/&&/xsave/) level = 3
    if (level == 3 && /avx512f/&&/avx512bw/&&/avx512cd/&&/avx512dq/&&/avx512vl/) level = 4

    print "";

    if (level == 1) { print "...This CPU is a x86_64-v1 processor."; }
    if (level == 2) { print "...This CPU is a x86_64-v2 processor."; }
    if (level == 3) { print "...This CPU is a x86_64-v3 processor."; }
    if (level == 4) { print "...This CPU is a x86_64-v4 processor."; }

    print "";
    print "The following versions of AlmaLinux will run on processors shown below:";
    print "    AlmaLinux8.x  -->  v1 and following cpu.";
    print "    AlmaLinux9.x  -->  v2 and following cpu.";
    print "    AlmaLinux10.x -->  v3 and following cpu by default.";
    print "                  (apparently there will be a version of 10.x to run on v2.)";

    exit 1
}