Add Zig package support with downloader and installation checks

src/globals/scripts/zig-cc.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+
+if [ "$BUILD_ROOT_PATH" = "" ]; then
+    echo "The script must be run in the SPC build environment."
+    exit 1
+fi
+
+SCRIPT_DIR="$(dirname "${BASH_SOURCE[0]}")"
+BUILDROOT_ABS=$BUILD_ROOT_PATH
+PARSED_ARGS=()
+
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        -isystem)
+            shift
+            ARG="$1"
+            shift
+            ARG_ABS="$(realpath "$ARG" 2>/dev/null || true)"
+            [[ "$ARG_ABS" == "$BUILDROOT_ABS" ]] && PARSED_ARGS+=("-I$ARG") || PARSED_ARGS+=("-isystem" "$ARG")
+            ;;
+        -isystem*)
+            ARG="${1#-isystem}"
+            shift
+            ARG_ABS="$(realpath "$ARG" 2>/dev/null || true)"
+            [[ "$ARG_ABS" == "$BUILDROOT_ABS" ]] && PARSED_ARGS+=("-I$ARG") || PARSED_ARGS+=("-isystem$ARG")
+            ;;
+        -march=*|-mcpu=*)
+            OPT_NAME="${1%%=*}"
+            OPT_VALUE="${1#*=}"
+            # Skip armv8- flags entirely as Zig doesn't support them
+            if [[ "$OPT_VALUE" == armv8-* ]]; then
+                shift
+                continue
+            fi
+            # replace -march=x86-64 with -march=x86_64
+            OPT_VALUE="${OPT_VALUE//-/_}"
+            PARSED_ARGS+=("${OPT_NAME}=${OPT_VALUE}")
+            shift
+            ;;
+        *)
+            PARSED_ARGS+=("$1")
+            shift
+            ;;
+    esac
+done
+
+[[ -n "$SPC_TARGET" ]] && TARGET="-target $SPC_TARGET" || TARGET=""
+
+if [[ "$SPC_TARGET" =~ \.[0-9]+\.[0-9]+ ]]; then
+    output=$(zig cc $TARGET $SPC_COMPILER_EXTRA "${PARSED_ARGS[@]}" 2>&1)
+    status=$?
+
+    if [[ $status -eq 0 ]]; then
+        echo "$output"
+        exit 0
+    fi
+
+    if echo "$output" | grep -qE "version '.*' in target triple"; then
+        filtered_output=$(echo "$output" | grep -vE "version '.*' in target triple")
+        echo "$filtered_output"
+        exit 0
+    fi
+fi
+
+exec zig cc $TARGET $SPC_COMPILER_EXTRA "${PARSED_ARGS[@]}"