--- gforth/configure.in	1999/03/20 09:20:31	1.52
+++ gforth/configure.in	2000/09/23 15:46:52	1.74
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 
-#Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
+#Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
 
 #This file is part of Gforth.
 
@@ -16,18 +16,18 @@ dnl Process this file with autoconf to p
 
 #You should have received a copy of the GNU General Public License
 #along with this program; if not, write to the Free Software
-#Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 
 AC_INIT(engine/engine.c)
 
 dnl We use some automake macros here,
 dnl but don't use automake for creating Makefile.in
-AM_INIT_AUTOMAKE(gforth,0.4.9-19990320)
+AM_INIT_AUTOMAKE(gforth,0.4.9-20000726)
 #snapshots have numbers major.minor.release-YYYYMMDD
 #note that lexicographic ordering bust be heeded.
 #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
 AM_CONFIG_HEADER(engine/config.h)
-AM_CYGWIN32
+#AM_CYGWIN32
 
 AC_ARG_ENABLE(force-reg,
 [  --enable-force-reg	  Use explicit register declarations if they appear in
@@ -148,7 +148,9 @@ fi
 AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
 OLDLDFLAGS=$LDFLAGS
 LDFLAGS="$LDFLAGS -export-dynamic"
-AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
+dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
+dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
+AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
 test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
 AC_MSG_RESULT($ac_export_dynamic)
 
@@ -190,16 +192,35 @@ case "$host_cpu" in
 			AC_DEFINE(DIRECT_THREADED)
 		fi
 		;;
-	i586|i686)
+	i586)
 		machine=386
-		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
+		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
+		CFLAGS_1="$CFLAGS"
+		CFLAGS="$CFLAGS -mpentium"
+		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
 		if test "${enable_direct_threaded+set}" = "" \
 			-a "${enable_indirect_threaded+set}" = ""
 		then
-			echo "Using indirect threaded code on Pentium and up"
+			echo "Using indirect threaded code on Pentium/K5/K6"
 			AC_DEFINE(INDIRECT_THREADED)
 		fi
 		;;
+	i686)
+		machine=386
+		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
+		CFLAGS_1="$CFLAGS"
+		CFLAGS="$CFLAGS -mpentium"
+		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
+		if test "${enable_direct_threaded+set}" = "" \
+			-a "${enable_indirect_threaded+set}" = ""
+		then
+			echo "Using direct threaded code on Athlon/PPro/Pentium II/Pentium III"
+			AC_DEFINE(DIRECT_THREADED)
+		fi
+		;;
+	ia64*)
+		machine=ia64
+		;;
         m68k)
 		machine=m68k
 		CFLAGS="$CFLAGS -fomit-frame-pointer"
@@ -227,11 +248,25 @@ case "$host_cpu" in
 		;;
 	alpha*)
 		machine=alpha
+		#full IEEE FP support for more uniformity across platforms:
+		CFLAGS="$CFLAGS -mieee"
 		;;
-	power*)
+	power*|rs6000)
 		machine=power
 		$srcdir/mkinstalldirs arch/power
 		AC_CHECK_FUNC(_sync_cache_range,true,LIBOBJS="$LIBOBJS ../arch/power/_sync_cache_range.o")
+		#link text segment into first 32MB
+		AC_MSG_CHECKING([whether the linker accepts --script=arch/power/elf32ppc.x])
+		OLDLDFLAGS=$LDFLAGS
+                #the -L../$srcdir helps when $srcdir is relative
+		LDFLAGS="$LDFLAGS -L$srcdir -L../$srcdir -Xlinker --script=$srcdir/arch/power/elf32ppc.x"
+		AC_TRY_LINK(,,ac_link_script=yes,ac_link_script=no)
+		test $ac_link_script = yes||LDFLAGS=$OLDLDFLAGS
+		AC_MSG_RESULT($ac_link_script)
+		AC_MSG_CHECKING([whether the code is in the first 32MB])
+		AC_TRY_RUN([main(){label: exit(((unsigned long)&&label)>32000000UL);}],ac_code_under_32=yes,ac_code_under_32=no,ac_code_under_32=no)
+                AC_MSG_RESULT($ac_code_under_32)
+		test $ac_code_under_32 = yes||(AC_MSG_WARN([Using indirect threading]); AC_DEFINE(INDIRECT_THREADED))
 		;;
 	*)
 		echo "No direct threading support for $host_cpu, using indirect threading."
@@ -244,6 +279,12 @@ esac
 AC_SUBST(host)
 AC_SUBST(ENGINE_FLAGS)
 
+AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
+AC_SUBST(asm_fs)
+
+AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
+AC_SUBST(disasm_fs)
+
 case "$host_os" in
 	*win32)
 		EXE=".exe"
@@ -305,14 +346,16 @@ then
 	AC_FUNC_MEMCMP
 fi
 AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
-AC_CHECK_FUNCS(dlopen sys_siglist)
+AC_CHECK_FUNCS(dlopen sys_siglist getrusage)
 AC_DECL_SYS_SIGLIST
 AC_CHECK_FUNC(getopt_long,true,LIBOBJS="$LIBOBJS getopt.o getopt1.o")
 AC_CHECK_FUNCS(rint expm1 log1p)
 AC_REPLACE_FUNCS(ecvt)
 dnl No check for select, because our replacement is no good under
 dnl anything but DOS
-AC_CHECK_HEADERS(sys/mman.h)
+AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
+AC_FUNC_FNMATCH
+test $ac_cv_func_fnmatch_works = yes || LIBOBJS="$LIBOBJS fnmatch.o"
 AC_CHECK_FUNCS(mmap sysconf getpagesize)
 AM_PATH_LISPDIR