Add check script

check_avx.sh

@@ -0,0 +1,79 @@
+#!/bin/bash
+
+# Copyright (c) 2022 Alex313031.
+
+program="Thorium Browser." # The program we are checking for.
+
+YEL='\033[1;33m' # Yellow
+RED='\033[1;31m' # Red
+GRE='\033[1;32m' # Green
+
+script_name=${0##*/}
+
+check_result() { # Message calls
+    local ret="$1"
+    local msg="$2"
+    [ "$ret" -ne 0 ] && { printf "${RED}FAIL:" && tput sgr0 && echo " $msg"; exit 1; }
+    printf "${GRE}SUCCESS:" && tput sgr0 && echo " $msg"
+}
+
+get_cpuinfo() { # return details of the first CPU only
+    cat /proc/cpuinfo | awk 'BEGIN { RS = "" ; } { printf ("%s\n", $0); exit(0); }'
+}
+
+have_cpu_feature() {
+    local feature="$1"
+    get_cpuinfo | egrep -q "^flags.*\<$feature\>"
+}
+
+have_sse42_cpu_feature () {
+    local feature="sse4_2"
+    local desc="Streaming SIMD Extensions v4.2"
+    local need="$desc ($feature)"
+    have_cpu_feature "$feature"
+    check_result "$?" "$need"
+}
+
+have_avx_cpu_feature () {
+    local feature="avx"
+    local desc="Advanced Vector Extensions"
+    local need="$desc ($feature)"
+    have_cpu_feature "$feature"
+    check_result "$?" "$need"
+}
+
+have_aes_cpu_feature () {
+    local feature="aes"
+    local desc="Advanced Encryption Standard Extensions"
+    local need="$desc ($feature)"
+    have_cpu_feature "$feature"
+    check_result "$?" "$need"
+}
+
+have_64bit_cpu() {
+    local feature="lm" # "Long mode"
+    local desc="64-bit x86 CPU"
+    local need="$desc ($feature)"
+    have_cpu_feature "$feature"
+    check_result "$?" "$need"
+}
+
+common_checks() {
+    have_64bit_cpu && \
+        have_sse42_cpu_feature && have_aes_cpu_feature && have_avx_cpu_feature
+}
+
+check_host() {
+	printf "\n" &&
+    printf "${YEL}Checking if host is capable of building/running $program\n" && tput sgr0; echo
+    common_checks
+}
+
+main() {
+    case "$1" in
+        host) check_host ;;
+        *) printf "${RED}ERROR: Invalid type specified: '$1'\n" 2>&1 && tput sgr0; exit 1 ;;
+    esac
+}
+
+main "host" && printf "\n" && exit 0