https://forge.ocamlcore.org/tracker/index.php?func=detail&aid=1202&group_id=278&atid=1189

Index: camldbm-1.0/configure
===================================================================
--- camldbm-1.0.orig/configure
+++ camldbm-1.0/configure
@@ -35,7 +35,7 @@ hasgot() {
   ${CC:-cc} -I$1 -o hasgot.exe hasgot.c $3 $4
   res=$?
   rm -f hasgot.c hasgot.exe
-  return $?
+  return $res
 }
 
 dbm_include="not found"