diff --git a/config.h.in b/config.h.in
index 7f221618..f6755a1d 100644
--- a/config.h.in
+++ b/config.h.in
@@ -33,6 +33,9 @@
 /* define if the Boost::ASIO library is available */
 #undef HAVE_BOOST_ASIO
 
+/* define if the Boost::Regex library is available */
+#undef HAVE_BOOST_REGEX
+
 /* Dynamic library loading is supported */
 #undef HAVE_DLOPEN
 
@@ -114,7 +117,7 @@
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
 
-/* Default value for --with-target switch */
+/* Default value for --target switch */
 #undef TARGET_ARCH
 
 /* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
diff --git a/configure b/configure
index 6bec2e34..adb204c1 100755
--- a/configure
+++ b/configure
@@ -715,7 +715,6 @@ with_isa
 with_priv
 with_varch
 with_target
-enable_dirty
 enable_dual_endian
 '
       ac_precious_vars='build_alias
@@ -6044,6 +6043,7 @@ else
   as_fn_error $? "libpthread is required" "$LINENO" 5
 fi
 
+
 # Check whether --enable-dual-endian was given.
 if test "${enable_dual_endian+set}" = set; then :
   enableval=$enable_dual_endian;