--- gforth/configure.in	2008/01/08 19:55:55	1.207
+++ gforth/configure.in	2008/04/22 15:23:46	1.222
@@ -20,15 +20,45 @@ dnl Process this file with autoconf to p
 
 dnl We use some automake macros here,
 dnl but don't use automake for creating Makefile.in
-AC_INIT([gforth],[0.6.9-20070604],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
+AC_INIT([gforth],[0.6.9-20080405],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
 AC_PREREQ(2.54)
 #snapshots have numbers major.minor.release-YYYYMMDD
 #note that lexicographic ordering must be heeded.
 #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
-UPDATED="June 02, 2007"
+UPDATED="February 23, 2008"
 AC_SUBST(UPDATED)
 AC_CONFIG_HEADERS(engine/config.h)
 
+#ltdl stuff:
+AC_CONFIG_MACRO_DIR([libltdl/m4])
+LT_CONFIG_LTDL_DIR([libltdl])
+LT_INIT([dlopen])
+LTDL_INIT([subproject],[convenience])
+AC_CONFIG_AUX_DIR([libltdl/config])
+
+# check for ltdl features we need
+# The lt_dladvise_init symbol was added with libtool-2.2
+if test "x$with_included_ltdl" != "xyes"; then
+  save_CFLAGS="$CFLAGS"
+  save_LDFLAGS="$LDFLAGS"
+  CFLAGS="$CFLAGS $LTDLINCL"
+  LDFLAGS="$LDFLAGS $LIBLTDL"
+  AC_CHECK_LIB([ltdl], [lt_dladvise_init],
+		[],
+	[AC_MSG_ERROR([libltdl-2.2 or later needed; configure with --with-included-ltdl])])
+  LDFLAGS="$save_LDFLAGS"
+  CFLAGS="$save_CFLAGS"
+fi
+
+#how to link with libltdl
+if test "x$with_included_ltdl" = "xyes"; then
+  #hard-code it (hopefully portable); the official way is to use automake :-(
+  LTDL_LDLIBS='-L$(top_builddir)/libltdl/.libs -lltdlc'
+else
+  LTDL_LDLIBS='$(LIBLTDL)'
+fi
+AC_SUBST(LTDL_LDLIBS)
+
 #suppress the "-g -O2" default
 test "$CFLAGS" || CFLAGS=-O2
 
@@ -188,11 +218,19 @@ case "$host_cpu" in
 		   CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
 		fi
 		if test -z $arm_cacheflush; then
-		    no_dynamic_default=1
-                    arm_cacheflush=arch/arm/cacheflush0
-		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
+		   case "$host_os" in
+		     *linux*)
+			arm_cacheflush=arch/arm/cacheflush-linux 
+			;;
+		     *)   
+			no_dynamic_default=1
+			arm_cacheflush=arch/arm/cacheflush0
+			AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
+			;;
+                   esac
 		fi
-                AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
+                AC_LIBSOURCES([../arch/arm/cacheflush0, dnl
+			       ../arch/arm/cacheflush-linux])
                 AC_LIBOBJ(../$arm_cacheflush)
                 #longer skipcodes lead to problems on ARM, and it uses
                 #only 4-byte alignment anyway
@@ -502,8 +540,8 @@ then
 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
         OPTS=-ll
 else
-        if test "$ac_cv_sizeof_char_p" == 8; then
-           OPTS="-ll -no-ll"
+        if test "$ac_cv_sizeof_char_p" = 8; then
+           OPTS="-ll -noll"
         else
            OPTS=-noll
         fi
@@ -599,13 +637,17 @@ AC_MSG_RESULT($M4)
 
 # Find installed Gforth
 AC_MSG_CHECKING([for gforth])
-GFORTH="`which gforth 2>/dev/null`"
-if test ! -z "$GFORTH"; then  GFORTH="$GFORTH -m4M" ; fi
-AC_SUBST(GFORTH)
-AC_DEFINE_UNQUOTED(GFORTH,"$GFORTH",[How to invoke gforth])
-AC_MSG_RESULT($GFORTH)
+GFORTH="`cd / && which gforth 2>/dev/null`"
+if test -z "$GFORTH"; then
+  PREFORTH='echo "You need to configure with a gforth in $$PATH to build this part" && false'
+else
+  PREFORTH="$GFORTH -i `cd / && gforth --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
+fi
+AC_SUBST(PREFORTH)
+AC_DEFINE_UNQUOTED(PREFORTH,"$PREFORTH",[How to invoke the pre-installed gforth])
+AC_MSG_RESULT($PREFORTH)
 
-echo "machine='$machine'"
+#echo "machine='$machine'"
 
 dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
 AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
@@ -656,13 +698,13 @@ AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chc
 
 dnl Now a little support for DOS/DJGCC
 AC_SUBST(GFORTH_EXE)
-GFORTH_EXE=""
+GFORTH_EXE="true"
 AC_SUBST(GFORTHFAST_EXE)
-GFORTHFAST_EXE=""
+GFORTHFAST_EXE="true"
 AC_SUBST(GFORTHITC_EXE)
-GFORTHITC_EXE=""
+GFORTHITC_EXE="true"
 AC_SUBST(GFORTHDITC_EXE)
-GFORTHDITC_EXE=""
+GFORTHDITC_EXE="true"
 
 AC_SUBST(FORTHSIZES)
 
@@ -779,7 +821,6 @@ dnl Checks for library functions
 dnl This check is just for making later checks link with libm.
 dnl using sin here is no good idea since it is built-into gcc and typechecked
 AC_CHECK_LIB(m,asin)
-AC_CHECK_LIB(ltdl,lt_dlinit)
 AC_CHECK_LIB(dl,dlopen)
 dnl check for libffi 2.x
 AC_CHECK_LIB(ffi,ffi_call)