--- cryptlib-3.4.3.1/tools/ccopts.sh.orig	2022-12-30 17:40:57.093303975 +0100
+++ cryptlib-3.4.3.1/tools/ccopts.sh	2022-12-30 17:41:51.230634217 +0100
@@ -385,7 +385,17 @@
 # worked since at least 2.7.2 although it wasn't actually documented until
 # the first 3.x releases).
 
-GCC_VER="$(gcc -dumpversion | tr -d  '.' | cut -c 1-2)"
+GCC_VER="$($CC -dumpversion)"
+case $GCC_VER in
+        [0-9])
+                GCC_VER="${GCC_VER}0" ;;
+
+        [0-9][0-9]*)
+                GCC_VER="$(echo $GCC_VER | tr -d  '.' | cut -c 1-3)" ;;
+
+        *)
+                GCC_VER="$(echo $GCC_VER | tr -d  '.' | cut -c 1-2)" ;;
+esac
 
 # Try and determine the CPU type.  This is made more complex by a pile of
 # *BSE's which, along with antideluvian tools like an as that doesn't
@@ -471,7 +481,7 @@
 				CCARGS="$CCARGS -march=pentium" ;;
 		esac ;
 	else
-		CCARGS="$CCARGS -mcpu=pentium" ;
+		CCARGS="$CCARGS -march=native" ;
 	fi ;
 fi