--- gforth/configure.in	2010/05/17 09:01:11	1.277
+++ gforth/configure.in	2010/09/13 18:18:11	1.282
@@ -20,7 +20,7 @@ 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],[0.7.0-20090215],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
+AC_INIT([gforth],[0.7.0-20100807],[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.
@@ -242,14 +242,20 @@ case "$host_cpu" in
 		;;
 	i486)
 		machine=386
-		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
+		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
+		CFLAGS_1="$CFLAGS"
+		CFLAGS="$CFLAGS -march=i486"
+		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
+		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")
 		;;
 	i*86)
 		machine=386
 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
 		CFLAGS_1="$CFLAGS"
-		CFLAGS="$CFLAGS -march=pentium"
+		CFLAGS="$CFLAGS -march=pentium -mtune=generic"
+		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -march=pentium")
 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
+		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")
 		;;
 	x86_64)
 		case $CC
@@ -282,6 +288,7 @@ case "$host_cpu" in
 		;;
 	mips*)
 		machine=mips
+		AC_LIBOBJ(../arch/mips/check_prim) 
 		#dynamic native code has the following problems on MIPS:
 		#
 		#1) J/JAL seems relocatable, but is are only
@@ -693,14 +700,16 @@ AC_MSG_RESULT($PREFORTH)
 dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
 if test x$EC_MODE = xfalse
 then
-  AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
+  AS_IF([test -f $srcdir/arch/$machine/asm.fs],
+        [asm_fs=arch/$machine/asm.fs])
 fi
 AC_SUBST(asm_fs)
 
 dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
 if test x$EC_MODE = xfalse
 then
-  AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
+  AS_IF([test -f $srcdir/arch/$machine/disasm.fs],
+   	[disasm_fs=arch/$machine/disasm.fs])
 fi
 AC_SUBST(disasm_fs)
 
@@ -805,7 +814,11 @@ fi
 #echo "CFLAGS=$CFLAGS"
 #echo "ac_link=$ac_link"
 AC_MSG_CHECKING([if and how we can waste code space])
-if test -z "$skipcode"; then
+if test -z "$skipcode" && test x$cross_compiling = xyes; then
+   # we cannot perform the AC_TRY_RUN check when cross-compiling.  
+   skipcode=no
+   AC_MSG_RESULT([$skipcode, can't run checks since cross-compiling])
+elif test -z "$skipcode"; then
     skipcode=no
     CFLAGS_1="$CFLAGS"
     CFLAGS="$CFLAGS $ENGINE_FLAGS"
@@ -843,7 +856,7 @@ then
 	no_dynamic_default=1
 	AC_MSG_WARN(Disabling default dynamic native code generation)
     fi
-    AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
+    AC_DEFINE_UNQUOTED(SKIP16,asm(""),statement for skipping 16 bytes)
 else
     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
 fi