--- gforth/configure.in	2003/05/04 08:28:28	1.120
+++ gforth/configure.in	2003/07/18 15:12:26	1.122
@@ -18,6 +18,7 @@ dnl Process this file with autoconf to p
 #along with this program; if not, write to the Free Software
 #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 
+
 dnl We use some automake macros here,
 dnl but don't use automake for creating Makefile.in
 AC_INIT([gforth],[0.6.1],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
@@ -29,6 +30,9 @@ UPDATED="March 11, 2003"
 AC_SUBST(UPDATED)
 AC_CONFIG_HEADERS(engine/config.h)
 
+#suppress the "-g -O2" default
+test "$CFLAGS" || CFLAGS=-O2
+
 #default setting that may be changed later:
 no_dynamic_default=0
 
@@ -40,12 +44,18 @@ AC_ARG_ENABLE(force-reg,
 AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)]))
 
 AC_ARG_WITH(debug,
-[  --with-debug     specifies option -g to compile with debug info (default)
-  --without-debug  omits the -g switch and creates smaller images on
-                   machines where "strip" has problems with gcc style
-                   debugging informations.],
+[  --with-debug		  specifies option -g to compile with debug info
+  --without-debug	  omits the -g switch and creates smaller images on
+			  machines where "strip" has problems with gcc style
+			  debugging informations.],
 if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
 
+AC_ARG_WITH(dynamic,
+[  --with-dynamic	  Gforth defaults to dynamic super instructions,
+  --without-dynamic	  this may cause problems with newer GCCs and global
+			  CSE, so if you see troubles, turn it off.],
+if test "$withval" = "no"; then no_dynamic_default=1; fi)
+
 dnl PEEPHOLE="yes"
 dnl AC_ARG_WITH(peephole,
 dnl [  --with-peephole	Enable peephole optimization (default)
@@ -85,8 +95,6 @@ dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BIT
 #currently we force direct threading this way.  Eventually we should
 #setup in the arch and engine files right
 
-CFLAGS=$CFLAGS
-
 AC_PROG_CC
 
 test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)