make it less error-prone to handle config.mk
diff --git a/config.mk b/config.mk
index c502fb9..d5ff516 100644
--- a/config.mk
+++ b/config.mk
@@ -1,2 +1,14 @@
-CAPSTONE_ARCHS = arm x86 mips aarch64
+# Specify which archs you want to compile in
+CAPSTONE_ARCHS =
+# Comment the line below if you don't want to ARM support
+CAPSTONE_ARCHS += arm
+
+# Comment the line below if you don't want to ARM64 support
+CAPSTONE_ARCHS += aarch64
+
+# Comment the line below if you don't want to Mips support
+CAPSTONE_ARCHS += mips
+
+# Comment the line below if you don't want to X86 support
+CAPSTONE_ARCHS += x86