--- a/auto-cpu-optimization.sh
+++ b/auto-cpu-optimization.sh
@@ -1,19 +1,22 @@
 #!/bin/bash
 
-# Check if GCC is installed
-check_gcc() {
-  if ! [ -x "$(command -v gcc)" ]; then
-    # Display error message if GCC is not installed
-    echo "Error: GCC is not installed. Please install GCC and try again." >&2
+# Detect CPU march using available compiler (GCC or Clang)
+# Supports systems without GCC (e.g. musl/LLVM profiles)
+# See: https://github.com/Szowisz/CachyOS-kernels/issues/31
+detect_march() {
+  if [ -x "$(command -v gcc)" ]; then
+    gcc -Q -march=native --help=target | grep -m1 march= | awk '{print $2}'
+  elif [ -x "$(command -v clang)" ]; then
+    # Clang outputs target-cpu in its verbose mode
+    clang -### -march=native -E - </dev/null 2>&1 | grep -Po -m1 '"\-target-cpu"[[:space:]]"\K[^"]+'
+  else
+    echo "Error: Neither GCC nor Clang is installed. Please install one and try again." >&2
     exit 1
   fi
 }
 
-# Call the function before running the rest of the script
-check_gcc
-
-# Get CPU type from GCC and convert to uppercase
-MARCH=$(gcc -Q -march=native --help=target|grep -m1 march=|awk '{print $2}')
+# Get CPU type and convert to uppercase
+MARCH=$(detect_march)
 
 # Sync with 0005-cachy.patch using
 # sed -E '/= -march=/!d;/^[+]/!d;/CONFIG_GENERIC_CPU/d;/-march=native/d;s/.+CONFIG_M([^)]+).+-march=([^ ]+).*/\2) MARCH=\1;;/g' 0005-cachy.patch