Update autosetup to v0.7.2-10-g55241e3

Primarily for bootstrap jimsh build on openbsd

Signed-off-by: Steve Bennett <steveb@workware.net.au>

6 files changed, 1131 insertions, 542 deletions

diff --git a/autosetup/autosetup b/autosetup/autosetup
index e041e77..90f5454 100755
--- a/autosetup/autosetup
+++ b/autosetup/autosetup
@@ -566,7 +566,10 @@ proc options-show {what} {
 	set indent [string repeat " " [expr {$max+4}]]
 	set cols [getenv COLUMNS 80]
 	catch {
-		lassign [exec stty size] rows cols
+		lassign [exec stty size] _ sttycols
+		if {[string is integer -strict $sttycols]} {
+			set cols $sttycols
+		}
 	}
 	incr cols -1
 	# Now output
@@ -910,8 +913,7 @@ proc list-non-empty {list} {
 # Searches the path for an executable with the given name.
 # Note that the name may include some parameters, e.g. 'cc -mbig-endian',
 # in which case the parameters are ignored.
-# The full path to the executable if found, or "" if not found.
-# Returns 1 if found, or 0 if not.
+# Returns the full path to the executable if found, or "" if not found.
 #
 proc find-executable-path {name} {
 	# Ignore any parameters
diff --git a/autosetup/autosetup-config.guess b/autosetup/autosetup-config.guess
index e81d3ae..48a6846 100755
--- a/autosetup/autosetup-config.guess
+++ b/autosetup/autosetup-config.guess
@@ -1,14 +1,14 @@
 #! /bin/sh
 # Attempt to guess a canonical system name.
-#   Copyright 1992-2021 Free Software Foundation, Inc.
+#   Copyright 1992-2024 Free Software Foundation, Inc.
 
 # shellcheck disable=SC2006,SC2268 # see below for rationale
 
-timestamp='2021-06-03'
+timestamp='2024-07-27'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
+# the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful, but
@@ -47,7 +47,7 @@ me=`echo "$0" | sed -e 's,.*/,,'`
 usage="\
 Usage: $0 [OPTION]
 
-Output the configuration name of the system \`$me' is run on.
+Output the configuration name of the system '$me' is run on.
 
 Options:
   -h, --help         print this help, then exit
@@ -60,13 +60,13 @@ version="\
 GNU config.guess ($timestamp)
 
 Originally written by Per Bothner.
-Copyright 1992-2021 Free Software Foundation, Inc.
+Copyright 1992-2024 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
 
 help="
-Try \`$me --help' for more information."
+Try '$me --help' for more information."
 
 # Parse command line
 while test $# -gt 0 ; do
@@ -102,8 +102,8 @@ GUESS=
 # temporary files to be created and, as you can see below, it is a
 # headache to deal with in a portable fashion.
 
-# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
-# use `HOST_CC' if defined, but it is deprecated.
+# Historically, 'CC_FOR_BUILD' used to be named 'HOST_CC'. We still
+# use 'HOST_CC' if defined, but it is deprecated.
 
 # Portable tmp directory creation inspired by the Autoconf team.
 
@@ -123,7 +123,7 @@ set_cc_for_build() {
     dummy=$tmp/dummy
     case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in
 	,,)    echo "int x;" > "$dummy.c"
-	       for driver in cc gcc c89 c99 ; do
+	       for driver in cc gcc c17 c99 c89 ; do
 		   if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then
 		       CC_FOR_BUILD=$driver
 		       break
@@ -155,6 +155,9 @@ Linux|GNU|GNU/*)
 
 	set_cc_for_build
 	cat <<-EOF > "$dummy.c"
+	#if defined(__ANDROID__)
+	LIBC=android
+	#else
 	#include <features.h>
 	#if defined(__UCLIBC__)
 	LIBC=uclibc
@@ -162,6 +165,8 @@ Linux|GNU|GNU/*)
 	LIBC=dietlibc
 	#elif defined(__GLIBC__)
 	LIBC=gnu
+	#elif defined(__LLVM_LIBC__)
+	LIBC=llvm
 	#else
 	#include <stdarg.h>
 	/* First heuristic to detect musl libc.  */
@@ -169,6 +174,7 @@ Linux|GNU|GNU/*)
 	LIBC=musl
 	#endif
 	#endif
+	#endif
 	EOF
 	cc_set_libc=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`
 	eval "$cc_set_libc"
@@ -437,7 +443,7 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
 	# This test works for both compilers.
 	if test "$CC_FOR_BUILD" != no_compiler_found; then
 	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
-		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		(CCOPTS="" $CC_FOR_BUILD -m64 -E - 2>/dev/null) | \
 		grep IS_64BIT_ARCH >/dev/null
 	    then
 		SUN_ARCH=x86_64
@@ -459,7 +465,7 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
 		UNAME_RELEASE=`uname -v`
 		;;
 	esac
-	# Japanese Language versions have a version number like `4.1.3-JL'.
+	# Japanese Language versions have a version number like '4.1.3-JL'.
 	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/'`
 	GUESS=sparc-sun-sunos$SUN_REL
 	;;
@@ -628,7 +634,8 @@ EOF
 		sed 's/^		//' << EOF > "$dummy.c"
 		#include <sys/systemcfg.h>
 
-		main()
+		int
+		main ()
 			{
 			if (!__power_pc())
 				exit(1);
@@ -712,7 +719,8 @@ EOF
 		#include <stdlib.h>
 		#include <unistd.h>
 
-		int main ()
+		int
+		main ()
 		{
 		#if defined(_SC_KERNEL_BITS)
 		    long bits = sysconf(_SC_KERNEL_BITS);
@@ -904,7 +912,7 @@ EOF
 	fi
 	;;
     *:FreeBSD:*:*)
-	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	UNAME_PROCESSOR=`uname -p`
 	case $UNAME_PROCESSOR in
 	    amd64)
 		UNAME_PROCESSOR=x86_64 ;;
@@ -929,6 +937,9 @@ EOF
     i*:PW*:*)
 	GUESS=$UNAME_MACHINE-pc-pw32
 	;;
+    *:SerenityOS:*:*)
+        GUESS=$UNAME_MACHINE-pc-serenity
+        ;;
     *:Interix*:*)
 	case $UNAME_MACHINE in
 	    x86)
@@ -963,11 +974,37 @@ EOF
 	GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
 	GUESS=$UNAME_MACHINE-unknown-$GNU_SYS$GNU_REL-$LIBC
 	;;
+    x86_64:[Mm]anagarm:*:*|i?86:[Mm]anagarm:*:*)
+	GUESS="$UNAME_MACHINE-pc-managarm-mlibc"
+	;;
+    *:[Mm]anagarm:*:*)
+	GUESS="$UNAME_MACHINE-unknown-managarm-mlibc"
+	;;
     *:Minix:*:*)
 	GUESS=$UNAME_MACHINE-unknown-minix
 	;;
     aarch64:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	set_cc_for_build
+	CPU=$UNAME_MACHINE
+	LIBCABI=$LIBC
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    ABI=64
+	    sed 's/^	    //' << EOF > "$dummy.c"
+	    #ifdef __ARM_EABI__
+	    #ifdef __ARM_PCS_VFP
+	    ABI=eabihf
+	    #else
+	    ABI=eabi
+	    #endif
+	    #endif
+EOF
+	    cc_set_abi=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^ABI' | sed 's, ,,g'`
+	    eval "$cc_set_abi"
+	    case $ABI in
+		eabi | eabihf) CPU=armv8l; LIBCABI=$LIBC$ABI ;;
+	    esac
+	fi
+	GUESS=$CPU-unknown-linux-$LIBCABI
 	;;
     aarch64_be:Linux:*:*)
 	UNAME_MACHINE=aarch64_be
@@ -1033,7 +1070,16 @@ EOF
     k1om:Linux:*:*)
 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
 	;;
-    loongarch32:Linux:*:* | loongarch64:Linux:*:* | loongarchx32:Linux:*:*)
+    kvx:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    kvx:cos:*:*)
+	GUESS=$UNAME_MACHINE-unknown-cos
+	;;
+    kvx:mbr:*:*)
+	GUESS=$UNAME_MACHINE-unknown-mbr
+	;;
+    loongarch32:Linux:*:* | loongarch64:Linux:*:*)
 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
 	;;
     m32r*:Linux:*:*)
@@ -1148,16 +1194,27 @@ EOF
 	;;
     x86_64:Linux:*:*)
 	set_cc_for_build
+	CPU=$UNAME_MACHINE
 	LIBCABI=$LIBC
 	if test "$CC_FOR_BUILD" != no_compiler_found; then
-	    if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
-		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
-		grep IS_X32 >/dev/null
-	    then
-		LIBCABI=${LIBC}x32
-	    fi
+	    ABI=64
+	    sed 's/^	    //' << EOF > "$dummy.c"
+	    #ifdef __i386__
+	    ABI=x86
+	    #else
+	    #ifdef __ILP32__
+	    ABI=x32
+	    #endif
+	    #endif
+EOF
+	    cc_set_abi=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^ABI' | sed 's, ,,g'`
+	    eval "$cc_set_abi"
+	    case $ABI in
+		x86) CPU=i686 ;;
+		x32) LIBCABI=${LIBC}x32 ;;
+	    esac
 	fi
-	GUESS=$UNAME_MACHINE-pc-linux-$LIBCABI
+	GUESS=$CPU-pc-linux-$LIBCABI
 	;;
     xtensa*:Linux:*:*)
 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
@@ -1177,7 +1234,7 @@ EOF
 	GUESS=$UNAME_MACHINE-pc-sysv4.2uw$UNAME_VERSION
 	;;
     i*86:OS/2:*:*)
-	# If we were able to find `uname', then EMX Unix compatibility
+	# If we were able to find 'uname', then EMX Unix compatibility
 	# is probably installed.
 	GUESS=$UNAME_MACHINE-pc-os2-emx
 	;;
@@ -1318,7 +1375,7 @@ EOF
 		GUESS=ns32k-sni-sysv
 	fi
 	;;
-    PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+    PENTIUM:*:4.0*:*)	# Unisys 'ClearPath HMP IX 4000' SVR4/MP effort
 			# says <Richard.M.Bartel@ccMail.Census.GOV>
 	GUESS=i586-unisys-sysv4
 	;;
@@ -1364,8 +1421,11 @@ EOF
     BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
 	GUESS=i586-pc-haiku
 	;;
-    x86_64:Haiku:*:*)
-	GUESS=x86_64-unknown-haiku
+    ppc:Haiku:*:*)	# Haiku running on Apple PowerPC
+	GUESS=powerpc-apple-haiku
+	;;
+    *:Haiku:*:*)	# Haiku modern gcc (not bound by BeOS compat)
+	GUESS=$UNAME_MACHINE-unknown-haiku
 	;;
     SX-4:SUPER-UX:*:*)
 	GUESS=sx4-nec-superux$UNAME_RELEASE
@@ -1522,6 +1582,9 @@ EOF
     i*86:rdos:*:*)
 	GUESS=$UNAME_MACHINE-pc-rdos
 	;;
+    i*86:Fiwix:*:*)
+	GUESS=$UNAME_MACHINE-pc-fiwix
+	;;
     *:AROS:*:*)
 	GUESS=$UNAME_MACHINE-unknown-aros
 	;;
@@ -1534,6 +1597,9 @@ EOF
     *:Unleashed:*:*)
 	GUESS=$UNAME_MACHINE-unknown-unleashed$UNAME_RELEASE
 	;;
+    *:Ironclad:*:*)
+	GUESS=$UNAME_MACHINE-unknown-ironclad
+	;;
 esac
 
 # Do we have a guess based on uname results?
@@ -1557,6 +1623,7 @@ cat > "$dummy.c" <<EOF
 #endif
 #endif
 #endif
+int
 main ()
 {
 #if defined (sony)
diff --git a/autosetup/autosetup-config.sub b/autosetup/autosetup-config.sub
index d80c5d7..4aaae46 100755
--- a/autosetup/autosetup-config.sub
+++ b/autosetup/autosetup-config.sub
@@ -1,14 +1,14 @@
 #! /bin/sh
 # Configuration validation subroutine script.
-#   Copyright 1992-2021 Free Software Foundation, Inc.
+#   Copyright 1992-2024 Free Software Foundation, Inc.
 
-# shellcheck disable=SC2006,SC2268 # see below for rationale
+# shellcheck disable=SC2006,SC2268,SC2162 # see below for rationale
 
-timestamp='2021-07-03'
+timestamp='2024-05-27'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
+# the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful, but
@@ -76,13 +76,13 @@ Report bugs and patches to <config-patches@gnu.org>."
 version="\
 GNU config.sub ($timestamp)
 
-Copyright 1992-2021 Free Software Foundation, Inc.
+Copyright 1992-2024 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
 
 help="
-Try \`$me --help' for more information."
+Try '$me --help' for more information."
 
 # Parse command line
 while test $# -gt 0 ; do
@@ -120,15 +120,16 @@ case $# in
 esac
 
 # Split fields of configuration type
-# shellcheck disable=SC2162
+saved_IFS=$IFS
 IFS="-" read field1 field2 field3 field4 <<EOF
 $1
 EOF
+IFS=$saved_IFS
 
 # Separate into logical components for further validation
 case $1 in
 	*-*-*-*-*)
-		echo Invalid configuration \`"$1"\': more than four components >&2
+		echo "Invalid configuration '$1': more than four components" >&2
 		exit 1
 		;;
 	*-*-*-*)
@@ -140,10 +141,21 @@ case $1 in
 		# parts
 		maybe_os=$field2-$field3
 		case $maybe_os in
-			nto-qnx* | linux-* | uclinux-uclibc* \
-			| uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \
-			| netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
-			| storm-chaos* | os2-emx* | rtmk-nova*)
+			  cloudabi*-eabi* \
+			| kfreebsd*-gnu* \
+			| knetbsd*-gnu* \
+			| kopensolaris*-gnu* \
+			| linux-* \
+			| managarm-* \
+			| netbsd*-eabi* \
+			| netbsd*-gnu* \
+			| nto-qnx* \
+			| os2-emx* \
+			| rtmk-nova* \
+			| storm-chaos* \
+			| uclinux-gnu* \
+			| uclinux-uclibc* \
+			| windows-* )
 				basic_machine=$field1
 				basic_os=$maybe_os
 				;;
@@ -158,8 +170,12 @@ case $1 in
 		esac
 		;;
 	*-*)
-		# A lone config we happen to match not fitting any pattern
 		case $field1-$field2 in
+			# Shorthands that happen to contain a single dash
+			convex-c[12] | convex-c3[248])
+				basic_machine=$field2-convex
+				basic_os=
+				;;
 			decstation-3100)
 				basic_machine=mips-dec
 				basic_os=
@@ -167,24 +183,88 @@ case $1 in
 			*-*)
 				# Second component is usually, but not always the OS
 				case $field2 in
-					# Prevent following clause from handling this valid os
+					# Do not treat sunos as a manufacturer
 					sun*os*)
 						basic_machine=$field1
 						basic_os=$field2
 						;;
 					# Manufacturers
-					dec* | mips* | sequent* | encore* | pc533* | sgi* | sony* \
-					| att* | 7300* | 3300* | delta* | motorola* | sun[234]* \
-					| unicom* | ibm* | next | hp | isi* | apollo | altos* \
-					| convergent* | ncr* | news | 32* | 3600* | 3100* \
-					| hitachi* | c[123]* | convex* | sun | crds | omron* | dg \
-					| ultra | tti* | harris | dolphin | highlevel | gould \
-					| cbm | ns | masscomp | apple | axis | knuth | cray \
-					| microblaze* | sim | cisco \
-					| oki | wec | wrs | winbond)
+					  3100* \
+					| 32* \
+					| 3300* \
+					| 3600* \
+					| 7300* \
+					| acorn \
+					| altos* \
+					| apollo \
+					| apple \
+					| atari \
+					| att* \
+					| axis \
+					| be \
+					| bull \
+					| cbm \
+					| ccur \
+					| cisco \
+					| commodore \
+					| convergent* \
+					| convex* \
+					| cray \
+					| crds \
+					| dec* \
+					| delta* \
+					| dg \
+					| digital \
+					| dolphin \
+					| encore* \
+					| gould \
+					| harris \
+					| highlevel \
+					| hitachi* \
+					| hp \
+					| ibm* \
+					| intergraph \
+					| isi* \
+					| knuth \
+					| masscomp \
+					| microblaze* \
+					| mips* \
+					| motorola* \
+					| ncr* \
+					| news \
+					| next \
+					| ns \
+					| oki \
+					| omron* \
+					| pc533* \
+					| rebel \
+					| rom68k \
+					| rombug \
+					| semi \
+					| sequent* \
+					| siemens \
+					| sgi* \
+					| siemens \
+					| sim \
+					| sni \
+					| sony* \
+					| stratus \
+					| sun \
+					| sun[234]* \
+					| tektronix \
+					| tti* \
+					| ultra \
+					| unicom* \
+					| wec \
+					| winbond \
+					| wrs)
 						basic_machine=$field1-$field2
 						basic_os=
 						;;
+					zephyr*)
+						basic_machine=$field1-unknown
+						basic_os=$field2
+						;;
 					*)
 						basic_machine=$field1
 						basic_os=$field2
@@ -265,26 +345,6 @@ case $1 in
 				basic_machine=arm-unknown
 				basic_os=cegcc
 				;;
-			convex-c1)
-				basic_machine=c1-convex
-				basic_os=bsd
-				;;
-			convex-c2)
-				basic_machine=c2-convex
-				basic_os=bsd
-				;;
-			convex-c32)
-				basic_machine=c32-convex
-				basic_os=bsd
-				;;
-			convex-c34)
-				basic_machine=c34-convex
-				basic_os=bsd
-				;;
-			convex-c38)
-				basic_machine=c38-convex
-				basic_os=bsd
-				;;
 			cray)
 				basic_machine=j90-cray
 				basic_os=unicos
@@ -707,15 +767,26 @@ case $basic_machine in
 		vendor=dec
 		basic_os=tops20
 		;;
-	delta | 3300 | motorola-3300 | motorola-delta \
-	      | 3300-motorola | delta-motorola)
+	delta | 3300 | delta-motorola | 3300-motorola | motorola-delta | motorola-3300)
 		cpu=m68k
 		vendor=motorola
 		;;
-	dpx2*)
+	# This used to be dpx2*, but that gets the RS6000-based
+	# DPX/20 and the x86-based DPX/2-100 wrong.  See
+	# https://oldskool.silicium.org/stations/bull_dpx20.htm
+	# https://www.feb-patrimoine.com/english/bull_dpx2.htm
+	# https://www.feb-patrimoine.com/english/unix_and_bull.htm
+	dpx2 | dpx2[23]00 | dpx2[23]xx)
 		cpu=m68k
 		vendor=bull
-		basic_os=sysv3
+		;;
+	dpx2100 | dpx21xx)
+		cpu=i386
+		vendor=bull
+		;;
+	dpx20)
+		cpu=rs6000
+		vendor=bull
 		;;
 	encore | umax | mmax)
 		cpu=ns32k
@@ -830,18 +901,6 @@ case $basic_machine in
 	next | m*-next)
 		cpu=m68k
 		vendor=next
-		case $basic_os in
-		    openstep*)
-		        ;;
-		    nextstep*)
-			;;
-		    ns2*)
-		      basic_os=nextstep2
-			;;
-		    *)
-		      basic_os=nextstep3
-			;;
-		esac
 		;;
 	np1)
 		cpu=np1
@@ -930,12 +989,13 @@ case $basic_machine in
 		;;
 
 	*-*)
-		# shellcheck disable=SC2162
+		saved_IFS=$IFS
 		IFS="-" read cpu vendor <<EOF
 $basic_machine
 EOF
+		IFS=$saved_IFS
 		;;
-	# We use `pc' rather than `unknown'
+	# We use 'pc' rather than 'unknown'
 	# because (1) that's what they normally are, and
 	# (2) the word "unknown" tends to confuse beginning users.
 	i*86 | x86_64)
@@ -963,15 +1023,19 @@ unset -v basic_machine
 
 # Decode basic machines in the full and proper CPU-Company form.
 case $cpu-$vendor in
-	# Here we handle the default manufacturer of certain CPU types in canonical form. It is in
-	# some cases the only manufacturer, in others, it is the most popular.
+	# Here we handle the default manufacturer of certain CPU types in canonical form.
+	# It is in some cases the only manufacturer, in others, it is the most popular.
+	c[12]-convex | c[12]-unknown | c3[248]-convex | c3[248]-unknown)
+		vendor=convex
+		basic_os=${basic_os:-bsd}
+		;;
 	craynv-unknown)
 		vendor=cray
 		basic_os=${basic_os:-unicosmp}
 		;;
 	c90-unknown | c90-cray)
 		vendor=cray
-		basic_os=${Basic_os:-unicos}
+		basic_os=${basic_os:-unicos}
 		;;
 	fx80-unknown)
 		vendor=alliant
@@ -1012,11 +1076,34 @@ case $cpu-$vendor in
 		;;
 
 	# Here we normalize CPU types with a missing or matching vendor
-	dpx20-unknown | dpx20-bull)
-		cpu=rs6000
-		vendor=bull
+	armh-unknown | armh-alt)
+		cpu=armv7l
+		vendor=alt
+		basic_os=${basic_os:-linux-gnueabihf}
+		;;
+
+	# Normalized CPU+vendor pairs that imply an OS, if not otherwise specified
+	m68k-isi)
+		basic_os=${basic_os:-sysv}
+		;;
+	m68k-sony)
+		basic_os=${basic_os:-newsos}
+		;;
+	m68k-tektronix)
+		basic_os=${basic_os:-bsd}
+		;;
+	m88k-harris)
+		basic_os=${basic_os:-sysv3}
+		;;
+	i386-bull | m68k-bull)
+		basic_os=${basic_os:-sysv3}
+		;;
+	rs6000-bull)
 		basic_os=${basic_os:-bosx}
 		;;
+	mips-sni)
+		basic_os=${basic_os:-sysv4}
+		;;
 
 	# Here we normalize CPU types irrespective of the vendor
 	amd64-*)
@@ -1024,7 +1111,7 @@ case $cpu-$vendor in
 		;;
 	blackfin-*)
 		cpu=bfin
-		basic_os=linux
+		basic_os=${basic_os:-linux}
 		;;
 	c54x-*)
 		cpu=tic54x
@@ -1047,7 +1134,7 @@ case $cpu-$vendor in
 		;;
 	m68knommu-*)
 		cpu=m68k
-		basic_os=linux
+		basic_os=${basic_os:-linux}
 		;;
 	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
 		cpu=s12z
@@ -1057,12 +1144,12 @@ case $cpu-$vendor in
 		;;
 	parisc-*)
 		cpu=hppa
-		basic_os=linux
+		basic_os=${basic_os:-linux}
 		;;
 	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
 		cpu=i586
 		;;
-	pentiumpro-* | p6-* | 6x86-* | athlon-* | athalon_*-*)
+	pentiumpro-* | p6-* | 6x86-* | athlon-* | athlon_*-*)
 		cpu=i686
 		;;
 	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
@@ -1071,9 +1158,6 @@ case $cpu-$vendor in
 	pentium4-*)
 		cpu=i786
 		;;
-	pc98-*)
-		cpu=i386
-		;;
 	ppc-* | ppcbe-*)
 		cpu=powerpc
 		;;
@@ -1107,13 +1191,10 @@ case $cpu-$vendor in
 	tx39el-*)
 		cpu=mipstx39el
 		;;
-	x64-*)
-		cpu=x86_64
-		;;
 	xscale-* | xscalee[bl]-*)
 		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
 		;;
-	arm64-*)
+	arm64-* | aarch64le-*)
 		cpu=aarch64
 		;;
 
@@ -1165,114 +1246,231 @@ case $cpu-$vendor in
 		# Recognize the canonical CPU types that are allowed with any
 		# company name.
 		case $cpu in
-			1750a | 580 \
+			  1750a \
+			| 580 \
+			| [cjt]90 \
 			| a29k \
-			| aarch64 | aarch64_be \
+			| aarch64 \
+			| aarch64_be \
+			| aarch64c \
 			| abacus \
-			| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] \
-			| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] \
-			| alphapca5[67] | alpha64pca5[67] \
+			| alpha \
+			| alpha64 \
+			| alpha64ev56 \
+			| alpha64ev6[78] \
+			| alpha64ev[4-8] \
+			| alpha64pca5[67] \
+			| alphaev56 \
+			| alphaev6[78] \
+			| alphaev[4-8] \
+			| alphapca5[67] \
 			| am33_2.0 \
 			| amdgcn \
-			| arc | arceb | arc32 | arc64 \
-			| arm | arm[lb]e | arme[lb] | armv* \
-			| avr | avr32 \
+			| arc \
+			| arc32 \
+			| arc64 \
+			| arceb \
+			| arm \
+			| arm64e \
+			| arm64ec \
+			| arm[lb]e \
+			| arme[lb] \
+			| armv* \
 			| asmjs \
+			| avr \
+			| avr32 \
 			| ba \
-			| be32 | be64 \
-			| bfin | bpf | bs2000 \
-			| c[123]* | c30 | [cjt]90 | c4x \
-			| c8051 | clipper | craynv | csky | cydra \
-			| d10v | d30v | dlx | dsp16xx \
-			| e2k | elxsi | epiphany \
-			| f30[01] | f700 | fido | fr30 | frv | ft32 | fx80 \
-			| h8300 | h8500 \
-			| hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+			| be32 \
+			| be64 \
+			| bfin \
+			| bpf \
+			| bs2000 \
+			| c30 \
+			| c4x \
+			| c8051 \
+			| c[123]* \
+			| clipper \
+			| craynv \
+			| csky \
+			| cydra \
+			| d10v \
+			| d30v \
+			| dlx \
+			| dsp16xx \
+			| e2k \
+			| elxsi \
+			| epiphany \
+			| f30[01] \
+			| f700 \
+			| fido \
+			| fr30 \
+			| frv \
+			| ft32 \
+			| fx80 \
+			| h8300 \
+			| h8500 \
 			| hexagon \
-			| i370 | i*86 | i860 | i960 | ia16 | ia64 \
-			| ip2k | iq2000 \
+			| hppa \
+			| hppa1.[01] \
+			| hppa2.0 \
+			| hppa2.0[nw] \
+			| hppa64 \
+			| i*86 \
+			| i370 \
+			| i860 \
+			| i960 \
+			| ia16 \
+			| ia64 \
+			| ip2k \
+			| iq2000 \
+			| javascript \
 			| k1om \
-			| le32 | le64 \
+			| kvx \
+			| le32 \
+			| le64 \
 			| lm32 \
-			| loongarch32 | loongarch64 | loongarchx32 \
-			| m32c | m32r | m32rle \
-			| m5200 | m68000 | m680[012346]0 | m68360 | m683?2 | m68k \
-			| m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x \
-			| m88110 | m88k | maxq | mb | mcore | mep | metag \
-			| microblaze | microblazeel \
-			| mips | mipsbe | mipseb | mipsel | mipsle \
-			| mips16 \
-			| mips64 | mips64eb | mips64el \
-			| mips64octeon | mips64octeonel \
-			| mips64orion | mips64orionel \
-			| mips64r5900 | mips64r5900el \
-			| mips64vr | mips64vrel \
-			| mips64vr4100 | mips64vr4100el \
-			| mips64vr4300 | mips64vr4300el \
-			| mips64vr5000 | mips64vr5000el \
-			| mips64vr5900 | mips64vr5900el \
-			| mipsisa32 | mipsisa32el \
-			| mipsisa32r2 | mipsisa32r2el \
-			| mipsisa32r3 | mipsisa32r3el \
-			| mipsisa32r5 | mipsisa32r5el \
-			| mipsisa32r6 | mipsisa32r6el \
-			| mipsisa64 | mipsisa64el \
-			| mipsisa64r2 | mipsisa64r2el \
-			| mipsisa64r3 | mipsisa64r3el \
-			| mipsisa64r5 | mipsisa64r5el \
-			| mipsisa64r6 | mipsisa64r6el \
-			| mipsisa64sb1 | mipsisa64sb1el \
-			| mipsisa64sr71k | mipsisa64sr71kel \
-			| mipsr5900 | mipsr5900el \
-			| mipstx39 | mipstx39el \
+			| loongarch32 \
+			| loongarch64 \
+			| m32c \
+			| m32r \
+			| m32rle \
+			| m5200 \
+			| m68000 \
+			| m680[012346]0 \
+			| m6811 \
+			| m6812 \
+			| m68360 \
+			| m683?2 \
+			| m68hc11 \
+			| m68hc12 \
+			| m68hcs12x \
+			| m68k \
+			| m88110 \
+			| m88k \
+			| maxq \
+			| mb \
+			| mcore \
+			| mep \
+			| metag \
+			| microblaze \
+			| microblazeel \
+			| mips* \
 			| mmix \
-			| mn10200 | mn10300 \
+			| mn10200 \
+			| mn10300 \
 			| moxie \
-			| mt \
 			| msp430 \
-			| nds32 | nds32le | nds32be \
+			| mt \
+			| nanomips* \
+			| nds32 \
+			| nds32be \
+			| nds32le \
 			| nfp \
-			| nios | nios2 | nios2eb | nios2el \
-			| none | np1 | ns16k | ns32k | nvptx \
+			| nios \
+			| nios2 \
+			| nios2eb \
+			| nios2el \
+			| none \
+			| np1 \
+			| ns16k \
+			| ns32k \
+			| nvptx \
 			| open8 \
 			| or1k* \
 			| or32 \
 			| orion \
+			| pdp10 \
+			| pdp11 \
 			| picochip \
-			| pdp10 | pdp11 | pj | pjl | pn | power \
-			| powerpc | powerpc64 | powerpc64le | powerpcle | powerpcspe \
+			| pj \
+			| pjl \
+			| pn \
+			| power \
+			| powerpc \
+			| powerpc64 \
+			| powerpc64le \
+			| powerpcle \
+			| powerpcspe \
 			| pru \
 			| pyramid \
-			| riscv | riscv32 | riscv32be | riscv64 | riscv64be \
-			| rl78 | romp | rs6000 | rx \
-			| s390 | s390x \
+			| riscv \
+			| riscv32 \
+			| riscv32be \
+			| riscv64 \
+			| riscv64be \
+			| rl78 \
+			| romp \
+			| rs6000 \
+			| rx \
+			| s390 \
+			| s390x \
 			| score \
-			| sh | shl \
-			| sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb] | sh[lb]e \
-			| sh[1234]e[lb] |  sh[12345][lb]e | sh[23]ele | sh64 | sh64le \
-			| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet \
+			| sh \
+			| sh64 \
+			| sh64le \
+			| sh[12345][lb]e \
+			| sh[1234] \
+			| sh[1234]e[lb] \
+			| sh[23]e \
+			| sh[23]ele \
+			| sh[24]a \
+			| sh[24]ae[lb] \
+			| sh[lb]e \
+			| she[lb] \
+			| shl \
+			| sparc \
+			| sparc64 \
+			| sparc64b \
+			| sparc64v \
+			| sparc86x \
+			| sparclet \
 			| sparclite \
-			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
+			| sparcv8 \
+			| sparcv9 \
+			| sparcv9b \
+			| sparcv9v \
 			| spu \
+			| sv1 \
+			| sx* \
 			| tahoe \
 			| thumbv7* \
-			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
+			| tic30 \
+			| tic4x \
+			| tic54x \
+			| tic55x \
+			| tic6x \
+			| tic80 \
 			| tron \
 			| ubicom32 \
-			| v70 | v850 | v850e | v850e1 | v850es | v850e2 | v850e2v3 \
+			| v70 \
+			| v810 \
+			| v850 \
+			| v850e \
+			| v850e1 \
+			| v850e2 \
+			| v850e2v3 \
+			| v850es \
 			| vax \
+			| vc4 \
 			| visium \
 			| w65 \
-			| wasm32 | wasm64 \
+			| wasm32 \
+			| wasm64 \
 			| we32k \
-			| x86 | x86_64 | xc16x | xgate | xps100 \
-			| xstormy16 | xtensa* \
+			| x86 \
+			| x86_64 \
+			| xc16x \
+			| xgate \
+			| xps100 \
+			| xstormy16 \
+			| xtensa* \
 			| ymp \
-			| z8k | z80)
+			| z80 \
+			| z8k)
 				;;
 
 			*)
-				echo Invalid configuration \`"$1"\': machine \`"$cpu-$vendor"\' not recognized 1>&2
+				echo "Invalid configuration '$1': machine '$cpu-$vendor' not recognized" 1>&2
 				exit 1
 				;;
 		esac
@@ -1293,11 +1491,12 @@ esac
 
 # Decode manufacturer-specific aliases for certain operating systems.
 
-if test x$basic_os != x
+if test x"$basic_os" != x
 then
 
-# First recognize some ad-hoc caes, or perhaps split kernel-os, or else just
+# First recognize some ad-hoc cases, or perhaps split kernel-os, or else just
 # set os.
+obj=
 case $basic_os in
 	gnu/linux*)
 		kernel=linux
@@ -1312,10 +1511,11 @@ case $basic_os in
 		os=`echo "$basic_os" | sed -e 's|nto-qnx|qnx|'`
 		;;
 	*-*)
-		# shellcheck disable=SC2162
+		saved_IFS=$IFS
 		IFS="-" read kernel os <<EOF
 $basic_os
 EOF
+		IFS=$saved_IFS
 		;;
 	# Default OS when just kernel was specified
 	nto*)
@@ -1326,6 +1526,10 @@ EOF
 		kernel=linux
 		os=`echo "$basic_os" | sed -e 's|linux|gnu|'`
 		;;
+	managarm*)
+		kernel=managarm
+		os=`echo "$basic_os" | sed -e 's|managarm|mlibc|'`
+		;;
 	*)
 		kernel=
 		os=$basic_os
@@ -1353,6 +1557,23 @@ case $os in
 	unixware*)
 		os=sysv4.2uw
 		;;
+	# The marketing names for NeXT's operating systems were
+	# NeXTSTEP, NeXTSTEP 2, OpenSTEP 3, OpenSTEP 4.  'openstep' is
+	# mapped to 'openstep3', but 'openstep1' and 'openstep2' are
+	# mapped to 'nextstep' and 'nextstep2', consistent with the
+	# treatment of SunOS/Solaris.
+	ns | ns1 | nextstep | nextstep1 | openstep1)
+		os=nextstep
+		;;
+	ns2 | nextstep2 | openstep2)
+		os=nextstep2
+		;;
+	ns3 | nextstep3 | openstep | openstep3)
+		os=openstep3
+		;;
+	ns4 | nextstep4 | openstep4)
+		os=openstep4
+		;;
 	# es1800 is here to avoid being matched by es* (a different OS)
 	es1800*)
 		os=ose
@@ -1423,6 +1644,7 @@ case $os in
 		;;
 	utek*)
 		os=bsd
+		vendor=`echo "$vendor" | sed -e 's|^unknown$|tektronix|'`
 		;;
 	dynix*)
 		os=bsd
@@ -1439,21 +1661,25 @@ case $os in
 	386bsd)
 		os=bsd
 		;;
-	ctix* | uts*)
+	ctix*)
 		os=sysv
+		vendor=`echo "$vendor" | sed -e 's|^unknown$|convergent|'`
 		;;
-	nova*)
-		os=rtmk-nova
+	uts*)
+		os=sysv
 		;;
-	ns2)
-		os=nextstep2
+	nova*)
+		kernel=rtmk
+		os=nova
 		;;
 	# Preserve the version number of sinix5.
 	sinix5.*)
 		os=`echo "$os" | sed -e 's|sinix|sysv|'`
+		vendor=`echo "$vendor" | sed -e 's|^unknown$|sni|'`
 		;;
 	sinix*)
 		os=sysv4
+		vendor=`echo "$vendor" | sed -e 's|^unknown$|sni|'`
 		;;
 	tpf*)
 		os=tpf
@@ -1491,10 +1717,16 @@ case $os in
 			os=eabi
 			;;
 		    *)
-			os=elf
+			os=
+			obj=elf
 			;;
 		esac
 		;;
+	aout* | coff* | elf* | pe*)
+		# These are machine code file formats, not OSes
+		obj=$os
+		os=
+		;;
 	*)
 		# No normalization, but not necessarily accepted, that comes below.
 		;;
@@ -1513,12 +1745,15 @@ else
 # system, and we'll never get to this point.
 
 kernel=
+obj=
 case $cpu-$vendor in
 	score-*)
-		os=elf
+		os=
+		obj=elf
 		;;
 	spu-*)
-		os=elf
+		os=
+		obj=elf
 		;;
 	*-acorn)
 		os=riscix1.2
@@ -1528,28 +1763,35 @@ case $cpu-$vendor in
 		os=gnu
 		;;
 	arm*-semi)
-		os=aout
+		os=
+		obj=aout
 		;;
 	c4x-* | tic4x-*)
-		os=coff
+		os=
+		obj=coff
 		;;
 	c8051-*)
-		os=elf
+		os=
+		obj=elf
 		;;
 	clipper-intergraph)
 		os=clix
 		;;
 	hexagon-*)
-		os=elf
+		os=
+		obj=elf
 		;;
 	tic54x-*)
-		os=coff
+		os=
+		obj=coff
 		;;
 	tic55x-*)
-		os=coff
+		os=
+		obj=coff
 		;;
 	tic6x-*)
-		os=coff
+		os=
+		obj=coff
 		;;
 	# This must come before the *-dec entry.
 	pdp10-*)
@@ -1571,28 +1813,43 @@ case $cpu-$vendor in
 		os=sunos3
 		;;
 	m68*-cisco)
-		os=aout
+		os=
+		obj=aout
 		;;
 	mep-*)
-		os=elf
+		os=
+		obj=elf
+		;;
+	# The -sgi and -siemens entries must be before the mips- entry
+	# or we get the wrong os.
+	*-sgi)
+		os=irix
+		;;
+	*-siemens)
+		os=sysv4
 		;;
 	mips*-cisco)
-		os=elf
+		os=
+		obj=elf
 		;;
-	mips*-*)
-		os=elf
+	mips*-*|nanomips*-*)
+		os=
+		obj=elf
 		;;
 	or32-*)
-		os=coff
+		os=
+		obj=coff
 		;;
-	*-tti)	# must be before sparc entry or we get the wrong os.
+	# This must be before the sparc-* entry or we get the wrong os.
+	*-tti)
 		os=sysv3
 		;;
 	sparc-* | *-sun)
 		os=sunos4.1.1
 		;;
 	pru-*)
-		os=elf
+		os=
+		obj=elf
 		;;
 	*-be)
 		os=beos
@@ -1616,7 +1873,7 @@ case $cpu-$vendor in
 		os=hpux
 		;;
 	*-hitachi)
-		os=hiux
+		os=hiuxwe2
 		;;
 	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
 		os=sysv
@@ -1660,12 +1917,6 @@ case $cpu-$vendor in
 	*-encore)
 		os=bsd
 		;;
-	*-sgi)
-		os=irix
-		;;
-	*-siemens)
-		os=sysv4
-		;;
 	*-masscomp)
 		os=rtu
 		;;
@@ -1673,10 +1924,12 @@ case $cpu-$vendor in
 		os=uxpv
 		;;
 	*-rom68k)
-		os=coff
+		os=
+		obj=coff
 		;;
 	*-*bug)
-		os=coff
+		os=
+		obj=coff
 		;;
 	*-apple)
 		os=macos
@@ -1694,10 +1947,11 @@ esac
 
 fi
 
-# Now, validate our (potentially fixed-up) OS.
+# Now, validate our (potentially fixed-up) individual pieces (OS, OBJ).
+
 case $os in
 	# Sometimes we do "kernel-libc", so those need to count as OSes.
-	musl* | newlib* | uclibc*)
+	llvm* | musl* | newlib* | relibc* | uclibc*)
 		;;
 	# Likewise for "kernel-abi"
 	eabi* | gnueabi*)
@@ -1705,81 +1959,308 @@ case $os in
 	# VxWorks passes extra cpu info in the 4th filed.
 	simlinux | simwindows | spe)
 		;;
+	# See `case $cpu-$os` validation below
+	ghcjs)
+		;;
 	# Now accept the basic system types.
-	# The portable systems comes first.
 	# Each alternative MUST end in a * to match a version number.
-	gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
-	     | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
-	     | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
-	     | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
-	     | hiux* | abug | nacl* | netware* | windows* \
-	     | os9* | macos* | osx* | ios* \
-	     | mpw* | magic* | mmixware* | mon960* | lnews* \
-	     | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
-	     | aos* | aros* | cloudabi* | sortix* | twizzler* \
-	     | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
-	     | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
-	     | mirbsd* | netbsd* | dicos* | openedition* | ose* \
-	     | bitrig* | openbsd* | secbsd* | solidbsd* | libertybsd* | os108* \
-	     | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
-	     | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
-	     | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
-	     | udi* | lites* | ieee* | go32* | aux* | hcos* \
-	     | chorusrdb* | cegcc* | glidix* | serenity* \
-	     | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
-	     | midipix* | mingw32* | mingw64* | mint* \
-	     | uxpv* | beos* | mpeix* | udk* | moxiebox* \
-	     | interix* | uwin* | mks* | rhapsody* | darwin* \
-	     | openstep* | oskit* | conix* | pw32* | nonstopux* \
-	     | storm-chaos* | tops10* | tenex* | tops20* | its* \
-	     | os2* | vos* | palmos* | uclinux* | nucleus* | morphos* \
-	     | scout* | superux* | sysv* | rtmk* | tpf* | windiss* \
-	     | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
-	     | skyos* | haiku* | rdos* | toppers* | drops* | es* \
-	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
-	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
-	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx*)
+	  abug \
+	| aix* \
+	| amdhsa* \
+	| amigados* \
+	| amigaos* \
+	| android* \
+	| aof* \
+	| aos* \
+	| aros* \
+	| atheos* \
+	| auroraux* \
+	| aux* \
+	| beos* \
+	| bitrig* \
+	| bme* \
+	| bosx* \
+	| bsd* \
+	| cegcc* \
+	| chorusos* \
+	| chorusrdb* \
+	| clix* \
+	| cloudabi* \
+	| cnk* \
+	| conix* \
+	| cos* \
+	| cxux* \
+	| cygwin* \
+	| darwin* \
+	| dgux* \
+	| dicos* \
+	| dnix* \
+	| domain* \
+	| dragonfly* \
+	| drops* \
+	| ebmon* \
+	| ecoff* \
+	| ekkobsd* \
+	| emscripten* \
+	| emx* \
+	| es* \
+	| fiwix* \
+	| freebsd* \
+	| fuchsia* \
+	| genix* \
+	| genode* \
+	| glidix* \
+	| gnu* \
+	| go32* \
+	| haiku* \
+	| hcos* \
+	| hiux* \
+	| hms* \
+	| hpux* \
+	| ieee* \
+	| interix* \
+	| ios* \
+	| iris* \
+	| irix* \
+	| ironclad* \
+	| isc* \
+	| its* \
+	| l4re* \
+	| libertybsd* \
+	| lites* \
+	| lnews* \
+	| luna* \
+	| lynxos* \
+	| mach* \
+	| macos* \
+	| magic* \
+	| mbr* \
+	| midipix* \
+	| midnightbsd* \
+	| mingw32* \
+	| mingw64* \
+	| minix* \
+	| mint* \
+	| mirbsd* \
+	| mks* \
+	| mlibc* \
+	| mmixware* \
+	| mon960* \
+	| morphos* \
+	| moss* \
+	| moxiebox* \
+	| mpeix* \
+	| mpw* \
+	| msdos* \
+	| msys* \
+	| mvs* \
+	| nacl* \
+	| netbsd* \
+	| netware* \
+	| newsos* \
+	| nextstep* \
+	| nindy* \
+	| nonstopux* \
+	| nova* \
+	| nsk* \
+	| nucleus* \
+	| nx6 \
+	| nx7 \
+	| oabi* \
+	| ohos* \
+	| onefs* \
+	| openbsd* \
+	| openedition* \
+	| openstep* \
+	| os108* \
+	| os2* \
+	| os400* \
+	| os68k* \
+	| os9* \
+	| ose* \
+	| osf* \
+	| oskit* \
+	| osx* \
+	| palmos* \
+	| phoenix* \
+	| plan9* \
+	| powermax* \
+	| powerunix* \
+	| proelf* \
+	| psos* \
+	| psp* \
+	| ptx* \
+	| pw32* \
+	| qnx* \
+	| rdos* \
+	| redox* \
+	| rhapsody* \
+	| riscix* \
+	| riscos* \
+	| rtems* \
+	| rtmk* \
+	| rtu* \
+	| scout* \
+	| secbsd* \
+	| sei* \
+	| serenity* \
+	| sim* \
+	| skyos* \
+	| solaris* \
+	| solidbsd* \
+	| sortix* \
+	| storm-chaos* \
+	| sunos \
+	| sunos[34]* \
+	| superux* \
+	| syllable* \
+	| sym* \
+	| sysv* \
+	| tenex* \
+	| tirtos* \
+	| toppers* \
+	| tops10* \
+	| tops20* \
+	| tpf* \
+	| tvos* \
+	| twizzler* \
+	| uclinux* \
+	| udi* \
+	| udk* \
+	| ultrix* \
+	| unicos* \
+	| uniplus* \
+	| unleashed* \
+	| unos* \
+	| uwin* \
+	| uxpv* \
+	| v88r* \
+	|*vms* \
+	| vos* \
+	| vsta* \
+	| vxsim* \
+	| vxworks* \
+	| wasi* \
+	| watchos* \
+	| wince* \
+	| windiss* \
+	| windows* \
+	| winnt* \
+	| xenix* \
+	| xray* \
+	| zephyr* \
+	| zvmoe* )
 		;;
 	# This one is extra strict with allowed versions
 	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
 		# Don't forget version if it is 3.2v4 or newer.
 		;;
+	# This refers to builds using the UEFI calling convention
+	# (which depends on the architecture) and PE file format.
+	# Note that this is both a different calling convention and
+	# different file format than that of GNU-EFI
+	# (x86_64-w64-mingw32).
+	uefi)
+		;;
 	none)
 		;;
+	kernel* | msvc* )
+		# Restricted further below
+		;;
+	'')
+		if test x"$obj" = x
+		then
+			echo "Invalid configuration '$1': Blank OS only allowed with explicit machine code file format" 1>&2
+		fi
+		;;
 	*)
-		echo Invalid configuration \`"$1"\': OS \`"$os"\' not recognized 1>&2
+		echo "Invalid configuration '$1': OS '$os' not recognized" 1>&2
+		exit 1
+		;;
+esac
+
+case $obj in
+	aout* | coff* | elf* | pe*)
+		;;
+	'')
+		# empty is fine
+		;;
+	*)
+		echo "Invalid configuration '$1': Machine code format '$obj' not recognized" 1>&2
+		exit 1
+		;;
+esac
+
+# Here we handle the constraint that a (synthetic) cpu and os are
+# valid only in combination with each other and nowhere else.
+case $cpu-$os in
+	# The "javascript-unknown-ghcjs" triple is used by GHC; we
+	# accept it here in order to tolerate that, but reject any
+	# variations.
+	javascript-ghcjs)
+		;;
+	javascript-* | *-ghcjs)
+		echo "Invalid configuration '$1': cpu '$cpu' is not valid with os '$os$obj'" 1>&2
 		exit 1
 		;;
 esac
 
 # As a final step for OS-related things, validate the OS-kernel combination
 # (given a valid OS), if there is a kernel.
-case $kernel-$os in
-	linux-gnu* | linux-dietlibc* | linux-android* | linux-newlib* | linux-musl* | linux-uclibc* )
+case $kernel-$os-$obj in
+	linux-gnu*- | linux-android*- | linux-dietlibc*- | linux-llvm*- \
+		    | linux-mlibc*- | linux-musl*- | linux-newlib*- \
+		    | linux-relibc*- | linux-uclibc*- | linux-ohos*- )
 		;;
-	uclinux-uclibc* )
+	uclinux-uclibc*- | uclinux-gnu*- )
 		;;
-	-dietlibc* | -newlib* | -musl* | -uclibc* )
+	managarm-mlibc*- | managarm-kernel*- )
+		;;
+	windows*-msvc*-)
+		;;
+	-dietlibc*- | -llvm*- | -mlibc*- | -musl*- | -newlib*- | -relibc*- \
+		    | -uclibc*- )
 		# These are just libc implementations, not actual OSes, and thus
 		# require a kernel.
-		echo "Invalid configuration \`$1': libc \`$os' needs explicit kernel." 1>&2
+		echo "Invalid configuration '$1': libc '$os' needs explicit kernel." 1>&2
 		exit 1
 		;;
-	kfreebsd*-gnu* | kopensolaris*-gnu*)
+	-kernel*- )
+		echo "Invalid configuration '$1': '$os' needs explicit kernel." 1>&2
+		exit 1
 		;;
-	vxworks-simlinux | vxworks-simwindows | vxworks-spe)
+	*-kernel*- )
+		echo "Invalid configuration '$1': '$kernel' does not support '$os'." 1>&2
+		exit 1
 		;;
-	nto-qnx*)
+	*-msvc*- )
+		echo "Invalid configuration '$1': '$os' needs 'windows'." 1>&2
+		exit 1
 		;;
-	os2-emx)
+	kfreebsd*-gnu*- | knetbsd*-gnu*- | netbsd*-gnu*- | kopensolaris*-gnu*-)
+		;;
+	vxworks-simlinux- | vxworks-simwindows- | vxworks-spe-)
+		;;
+	nto-qnx*-)
 		;;
-	*-eabi* | *-gnueabi*)
+	os2-emx-)
 		;;
-	-*)
+	rtmk-nova-)
+		;;
+	*-eabi*- | *-gnueabi*-)
+		;;
+	none--*)
+		# None (no kernel, i.e. freestanding / bare metal),
+		# can be paired with an machine code file format
+		;;
+	-*-)
 		# Blank kernel with real OS is always fine.
 		;;
-	*-*)
-		echo "Invalid configuration \`$1': Kernel \`$kernel' not known to work with OS \`$os'." 1>&2
+	--*)
+		# Blank kernel and OS with real machine code file format is always fine.
+		;;
+	*-*-*)
+		echo "Invalid configuration '$1': Kernel '$kernel' not known to work with OS '$os'." 1>&2
 		exit 1
 		;;
 esac
@@ -1792,7 +2273,7 @@ case $vendor in
 			*-riscix*)
 				vendor=acorn
 				;;
-			*-sunos*)
+			*-sunos* | *-solaris*)
 				vendor=sun
 				;;
 			*-cnk* | *-aix*)
@@ -1862,7 +2343,7 @@ case $vendor in
 		;;
 esac
 
-echo "$cpu-$vendor-${kernel:+$kernel-}$os"
+echo "$cpu-$vendor${kernel:+-$kernel}${os:+-$os}${obj:+-$obj}"
 exit
 
 # Local variables:
diff --git a/autosetup/cc.tcl b/autosetup/cc.tcl
index f45cc2e..05c1b1c 100644
--- a/autosetup/cc.tcl
+++ b/autosetup/cc.tcl
@@ -5,7 +5,7 @@
 #
 # The 'cc' module supports checking various 'features' of the C or C++
 # compiler/linker environment. Common commands are 'cc-check-includes',
-# 'cc-check-types', 'cc-check-functions', 'cc-with', 'make-config-header' and 'make-template'.
+# 'cc-check-types', 'cc-check-functions', 'cc-with' and 'make-config-header'
 #
 # The following environment variables are used if set:
 #
@@ -677,80 +677,82 @@ proc calc-define-output-type {name spec} {
 	return ""
 }
 
-# Initialise some values from the environment or commandline or default settings
-foreach i {LDFLAGS LIBS CPPFLAGS LINKFLAGS CFLAGS} {
-	lassign $i var default
-	define $var [get-env $var $default]
-}
+proc cc-init {} {
+	global autosetup
 
-if {[env-is-set CC]} {
-	# Set by the user, so don't try anything else
-	set try [list [get-env CC ""]]
-} else {
-	# Try some reasonable options
-	set try [list [get-define cross]cc [get-define cross]gcc]
-}
-define CC [find-an-executable {*}$try]
-if {[get-define CC] eq ""} {
-	user-error "Could not find a C compiler. Tried: [join $try ", "]"
-}
+	# Initialise some values from the environment or commandline or default settings
+	foreach i {LDFLAGS LIBS CPPFLAGS LINKFLAGS CFLAGS} {
+		lassign $i var default
+		define $var [get-env $var $default]
+	}
 
-define CPP [get-env CPP "[get-define CC] -E"]
+	if {[env-is-set CC]} {
+		# Set by the user, so don't try anything else
+		set try [list [get-env CC ""]]
+	} else {
+		# Try some reasonable options
+		set try [list [get-define cross]cc [get-define cross]gcc]
+	}
+	define CC [find-an-executable {*}$try]
+	if {[get-define CC] eq ""} {
+		user-error "Could not find a C compiler. Tried: [join $try ", "]"
+	}
 
-# XXX: Could avoid looking for a C++ compiler until requested
-# If CXX isn't found, it is set to the empty string.
-if {[env-is-set CXX]} {
-	define CXX [find-an-executable -required [get-env CXX ""]]
-} else {
-	define CXX [find-an-executable [get-define cross]c++ [get-define cross]g++]
-}
+	define CPP [get-env CPP "[get-define CC] -E"]
 
-# CXXFLAGS default to CFLAGS if not specified
-define CXXFLAGS [get-env CXXFLAGS [get-define CFLAGS]]
+	# XXX: Could avoid looking for a C++ compiler until requested
+	# If CXX isn't found, it is set to the empty string.
+	if {[env-is-set CXX]} {
+		define CXX [find-an-executable -required [get-env CXX ""]]
+	} else {
+		define CXX [find-an-executable [get-define cross]c++ [get-define cross]g++]
+	}
 
-# May need a CC_FOR_BUILD, so look for one
-define CC_FOR_BUILD [find-an-executable [get-env CC_FOR_BUILD ""] cc gcc false]
+	# CXXFLAGS default to CFLAGS if not specified
+	define CXXFLAGS [get-env CXXFLAGS [get-define CFLAGS]]
 
-if {[get-define CC] eq ""} {
-	user-error "Could not find a C compiler. Tried: [join $try ", "]"
-}
+	# May need a CC_FOR_BUILD, so look for one
+	define CC_FOR_BUILD [find-an-executable [get-env CC_FOR_BUILD ""] cc gcc false]
 
-# These start empty and never come from the user or environment
-define AS_CFLAGS ""
-define AS_CPPFLAGS ""
-define AS_CXXFLAGS ""
+	# These start empty and never come from the user or environment
+	define AS_CFLAGS ""
+	define AS_CPPFLAGS ""
+	define AS_CXXFLAGS ""
 
-define CCACHE [find-an-executable [get-env CCACHE ccache]]
+	define CCACHE [find-an-executable [get-env CCACHE ccache]]
 
-# If any of these are set in the environment, propagate them to the AUTOREMAKE commandline
-foreach i {CC CXX CCACHE CPP CFLAGS CXXFLAGS CXXFLAGS LDFLAGS LIBS CROSS CPPFLAGS LINKFLAGS CC_FOR_BUILD LD} {
-	if {[env-is-set $i]} {
-		# Note: If the variable is set on the command line, get-env will return that value
-		# so the command line will continue to override the environment
-		define-append-argv AUTOREMAKE $i=[get-env $i ""]
+	# If any of these are set in the environment, propagate them to the AUTOREMAKE commandline
+	foreach i {CC CXX CCACHE CPP CFLAGS CXXFLAGS CXXFLAGS LDFLAGS LIBS CROSS CPPFLAGS LINKFLAGS CC_FOR_BUILD LD} {
+		if {[env-is-set $i]} {
+			# Note: If the variable is set on the command line, get-env will return that value
+			# so the command line will continue to override the environment
+			define-append-argv AUTOREMAKE $i=[get-env $i ""]
+		}
 	}
-}
 
-# Initial cctest settings
-cc-store-settings {-cflags {} -includes {} -declare {} -link 0 -lang c -libs {} -code {} -nooutput 0}
-set autosetup(cc-include-deps) {}
+	# Initial cctest settings
+	cc-store-settings {-cflags {} -includes {} -declare {} -link 0 -lang c -libs {} -code {} -nooutput 0}
+	set autosetup(cc-include-deps) {}
 
-msg-result "C compiler...[get-define CCACHE] [get-define CC] [get-define CFLAGS] [get-define CPPFLAGS]"
-if {[get-define CXX] ne "false"} {
-	msg-result "C++ compiler...[get-define CCACHE] [get-define CXX] [get-define CXXFLAGS] [get-define CPPFLAGS]"
-}
-msg-result "Build C compiler...[get-define CC_FOR_BUILD]"
-
-# On Darwin, we prefer to use -g0 to avoid creating .dSYM directories
-# but some compilers may not support it, so test here.
-switch -glob -- [get-define host] {
-	*-*-darwin* {
-		if {[cctest -cflags {-g0}]} {
-			define cc-default-debug -g0
+	msg-result "C compiler...[get-define CCACHE] [get-define CC] [get-define CFLAGS] [get-define CPPFLAGS]"
+	if {[get-define CXX] ne "false"} {
+		msg-result "C++ compiler...[get-define CCACHE] [get-define CXX] [get-define CXXFLAGS] [get-define CPPFLAGS]"
+	}
+	msg-result "Build C compiler...[get-define CC_FOR_BUILD]"
+
+	# On Darwin, we prefer to use -g0 to avoid creating .dSYM directories
+	# but some compilers may not support it, so test here.
+	switch -glob -- [get-define host] {
+		*-*-darwin* {
+			if {[cctest -cflags {-g0}]} {
+				define cc-default-debug -g0
+			}
 		}
 	}
-}
 
-if {![cc-check-includes stdlib.h]} {
-	user-error "Compiler does not work. See config.log"
+	if {![cc-check-includes stdlib.h]} {
+		user-error "Compiler does not work. See config.log"
+	}
 }
+
+cc-init
diff --git a/autosetup/jimsh0.c b/autosetup/jimsh0.c
index 3c0e8b7..8f6f7ea 100644
--- a/autosetup/jimsh0.c
+++ b/autosetup/jimsh0.c
@@ -1,5 +1,5 @@
 /* This is single source file, bootstrap version of Jim Tcl. See http://jim.tcl.tk/ */
-#define JIM_TCL_COMPAT
+#define JIM_COMPAT
 #define JIM_ANSIC
 #define JIM_REGEXP
 #define HAVE_NO_AUTOCONF
@@ -13,7 +13,6 @@
 #define jim_ext_file
 #define jim_ext_glob
 #define jim_ext_exec
-#define jim_ext_posix
 #define jim_ext_clock
 #define jim_ext_array
 #define jim_ext_stdlib
@@ -63,7 +62,7 @@
 #define HAVE_PIPE
 #define _FILE_OFFSET_BITS 64
 #endif
-#define JIM_VERSION 83
+#define JIM_VERSION 84
 #ifndef JIM_WIN32COMPAT_H
 #define JIM_WIN32COMPAT_H
 
@@ -96,6 +95,9 @@ char *dlerror(void);
 
 #include <limits.h>
 #define jim_wide _int64
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
 #ifndef LLONG_MAX
 	#define LLONG_MAX    9223372036854775807I64
 #endif
@@ -110,11 +112,7 @@ char *dlerror(void);
 
 #include <io.h>
 
-struct timeval {
-	long tv_sec;
-	long tv_usec;
-};
-
+#include <winsock.h>
 int gettimeofday(struct timeval *tv, void *unused);
 
 #define HAVE_OPENDIR
@@ -1164,7 +1162,7 @@ int Jim_OpenForWrite(const char *filename, int append);
 
 int Jim_OpenForRead(const char *filename);
 
-#if defined(__MINGW32__)
+#if defined(__MINGW32__) || defined(_WIN32)
     #ifndef STRICT
     #define STRICT
     #endif
@@ -1199,6 +1197,7 @@ int Jim_OpenForRead(const char *filename);
     #define Jim_Stat _stat64
     #define Jim_FileStat _fstat64
     #define Jim_Lseek _lseeki64
+    #define O_TEXT _O_TEXT
 
 #else
     #if defined(HAVE_STAT64)
@@ -1241,10 +1240,11 @@ int Jim_OpenForRead(const char *filename);
             #define execvpe(ARG0, ARGV, ENV) execvp(ARG0, ARGV)
         #endif
     #endif
-#endif
 
-#ifndef O_TEXT
-#define O_TEXT 0
+    #ifndef O_TEXT
+        #define O_TEXT 0
+    #endif
+
 #endif
 
 
@@ -1293,8 +1293,14 @@ int Jim_initjimshInit(Jim_Interp *interp)
 "		if {[string match \"*/*\" $jim::argv0]} {\n"
 "			set jim::exe [file join [pwd] $jim::argv0]\n"
 "		} else {\n"
-"			foreach path [split [env PATH \"\"] $tcl_platform(pathSeparator)] {\n"
-"				set exec [file join [pwd] [string map {\\\\ /} $path] $jim::argv0]\n"
+"			set jim::argv0 [file tail $jim::argv0]\n"
+"			set path [split [env PATH \"\"] $tcl_platform(pathSeparator)]\n"
+"			if {$tcl_platform(platform) eq \"windows\"} {\n"
+"\n"
+"				set path [lmap p [list \"\" {*}$path] { string map {\\\\ /} $p }]\n"
+"			}\n"
+"			foreach p $path {\n"
+"				set exec [file join [pwd] $p $jim::argv0]\n"
 "				if {[file executable $exec]} {\n"
 "					set jim::exe $exec\n"
 "					break\n"
@@ -1947,9 +1953,6 @@ int Jim_tclcompatInit(Jim_Interp *interp)
 "			if {$cmd eq \"pid\"} {\n"
 "				return $pids\n"
 "			}\n"
-"			if {$cmd eq \"getfd\"} {\n"
-"				$f getfd\n"
-"			}\n"
 "			if {$cmd eq \"close\"} {\n"
 "				$f close\n"
 "\n"
@@ -2049,8 +2052,8 @@ int Jim_tclcompatInit(Jim_Interp *interp)
 
 
 #define AIO_CMD_LEN 32
-#define AIO_BUF_LEN 256
-#define AIO_WBUF_FULL_SIZE (64 * 1024)
+#define AIO_DEFAULT_RBUF_LEN 256
+#define AIO_DEFAULT_WBUF_LIMIT (64 * 1024)
 
 #define AIO_KEEPOPEN 1
 #define AIO_NODELETE 2
@@ -2058,6 +2061,8 @@ int Jim_tclcompatInit(Jim_Interp *interp)
 #define AIO_WBUF_NONE 8
 #define AIO_NONBLOCK 16
 
+#define AIO_ONEREAD 32
+
 enum wbuftype {
     WBUF_OPT_NONE,
     WBUF_OPT_LINE,
@@ -2132,11 +2137,20 @@ typedef struct AioFile
     const JimAioFopsType *fops;
     Jim_Obj *readbuf;
     Jim_Obj *writebuf;
+    char *rbuf;
+    size_t rbuf_len;
+    size_t wbuf_limit;
 } AioFile;
 
+static void aio_consume(Jim_Obj *objPtr, int n);
+
 static int stdio_writer(struct AioFile *af, const char *buf, int len)
 {
-    return write(af->fd, buf, len);
+    int ret = write(af->fd, buf, len);
+    if (ret < 0 && errno == EPIPE) {
+        aio_consume(af->writebuf, Jim_Length(af->writebuf));
+    }
+    return ret;
 }
 
 static int stdio_reader(struct AioFile *af, char *buf, int len, int nb)
@@ -2273,7 +2287,22 @@ static void aio_consume(Jim_Obj *objPtr, int n)
 }
 
 
-static int aio_autoflush(Jim_Interp *interp, void *clientData, int mask);
+static int aio_flush(Jim_Interp *interp, AioFile *af);
+
+#ifdef jim_ext_eventloop
+static int aio_autoflush(Jim_Interp *interp, void *clientData, int mask)
+{
+    AioFile *af = clientData;
+
+    aio_flush(interp, af);
+    if (Jim_Length(af->writebuf) == 0) {
+
+        return -1;
+    }
+    return 0;
+}
+#endif
+
 
 static int aio_flush(Jim_Interp *interp, AioFile *af)
 {
@@ -2308,19 +2337,7 @@ static int aio_flush(Jim_Interp *interp, AioFile *af)
     return JIM_OK;
 }
 
-static int aio_autoflush(Jim_Interp *interp, void *clientData, int mask)
-{
-    AioFile *af = clientData;
-
-    aio_flush(interp, af);
-    if (Jim_Length(af->writebuf) == 0) {
-
-        return -1;
-    }
-    return 0;
-}
-
-static int aio_read_len(Jim_Interp *interp, AioFile *af, int nb, char *buf, size_t buflen, int neededLen)
+static int aio_read_len(Jim_Interp *interp, AioFile *af, unsigned flags, int neededLen)
 {
     if (!af->readbuf) {
         af->readbuf = Jim_NewStringObj(interp, NULL, 0);
@@ -2338,20 +2355,29 @@ static int aio_read_len(Jim_Interp *interp, AioFile *af, int nb, char *buf, size
         int readlen;
 
         if (neededLen == -1) {
-            readlen = AIO_BUF_LEN;
+            readlen = af->rbuf_len;
         }
         else {
-            readlen = (neededLen > AIO_BUF_LEN ? AIO_BUF_LEN : neededLen);
+            readlen = (neededLen > af->rbuf_len ? af->rbuf_len : neededLen);
+        }
+
+        if (!af->rbuf) {
+            af->rbuf = Jim_Alloc(af->rbuf_len);
         }
-        retval = af->fops->reader(af, buf, readlen, nb);
+        retval = af->fops->reader(af, af->rbuf, readlen, flags & AIO_NONBLOCK);
         if (retval > 0) {
-            Jim_AppendString(interp, af->readbuf, buf, retval);
+            if (retval) {
+                Jim_AppendString(interp, af->readbuf, af->rbuf, retval);
+            }
             if (neededLen != -1) {
                 neededLen -= retval;
             }
+            if (flags & AIO_ONEREAD) {
+                return JIM_OK;
+            }
             continue;
         }
-        if (JimCheckStreamError(interp, af)) {
+        if ((flags & AIO_ONEREAD) || JimCheckStreamError(interp, af)) {
             return JIM_ERR;
         }
         break;
@@ -2422,6 +2448,7 @@ static void JimAioDelProc(Jim_Interp *interp, void *privData)
         Jim_FreeNewObj(interp, af->readbuf);
     }
 
+    Jim_Free(af->rbuf);
     Jim_Free(af);
 }
 
@@ -2435,7 +2462,6 @@ static int aio_cmd_read(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
     int option;
     int nb;
     Jim_Obj *objPtr;
-    char buf[AIO_BUF_LEN];
 
     if (argc) {
         if (*Jim_String(argv[0]) == '-') {
@@ -2469,7 +2495,7 @@ static int aio_cmd_read(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 
     nb = aio_start_nonblocking(af);
 
-    if (aio_read_len(interp, af, nb, buf, sizeof(buf), neededLen) != JIM_OK) {
+    if (aio_read_len(interp, af, nb ? AIO_NONBLOCK : 0, neededLen) != JIM_OK) {
         aio_set_nonblocking(af, nb);
         return JIM_ERR;
     }
@@ -2524,11 +2550,6 @@ static int aio_cmd_copy(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
     AioFile *af = Jim_CmdPrivData(interp);
     jim_wide count = 0;
     jim_wide maxlen = JIM_WIDE_MAX;
-
-    char buf[AIO_BUF_LEN];
-
-    char *bufp = buf;
-    int buflen = sizeof(buf);
     int ok = 1;
     Jim_Obj *objv[4];
 
@@ -2554,10 +2575,10 @@ static int aio_cmd_copy(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 
     while (count < maxlen) {
         jim_wide len = maxlen - count;
-        if (len > buflen) {
-            len = buflen;
+        if (len > af->rbuf_len) {
+            len = af->rbuf_len;
         }
-        if (aio_read_len(interp, af, 0, bufp, buflen, len) != JIM_OK) {
+        if (aio_read_len(interp, af, 0, len) != JIM_OK) {
             ok = 0;
             break;
         }
@@ -2570,17 +2591,13 @@ static int aio_cmd_copy(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
         if (aio_eof(af)) {
             break;
         }
-        if (count >= 16384 && bufp == buf) {
+        if (count >= 16384 && af->rbuf_len < 65536) {
 
-            buflen = 65536;
-            bufp = Jim_Alloc(buflen);
+            af->rbuf_len = 65536;
+            af->rbuf = Jim_Realloc(af->rbuf, af->rbuf_len);
         }
     }
 
-    if (bufp != buf) {
-        Jim_Free(bufp);
-    }
-
     Jim_DecrRefCount(interp, objv[1]);
     Jim_DecrRefCount(interp, objv[2]);
 
@@ -2596,10 +2613,10 @@ static int aio_cmd_copy(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 static int aio_cmd_gets(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
     AioFile *af = Jim_CmdPrivData(interp);
-    char buf[AIO_BUF_LEN];
     Jim_Obj *objPtr = NULL;
     int len;
     int nb;
+    unsigned flags = AIO_ONEREAD;
     char *nl = NULL;
     int offset = 0;
 
@@ -2607,33 +2624,33 @@ static int aio_cmd_gets(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 
 
     nb = aio_start_nonblocking(af);
-
-    if (!af->readbuf) {
-        af->readbuf = Jim_NewStringObj(interp, NULL, 0);
+    if (nb) {
+        flags |= AIO_NONBLOCK;
     }
 
     while (!aio_eof(af)) {
-        const char *pt = Jim_GetString(af->readbuf, &len);
-        nl = memchr(pt + offset, '\n', len - offset);
-        if (nl) {
+        if (af->readbuf) {
+            const char *pt = Jim_GetString(af->readbuf, &len);
+            nl = memchr(pt + offset, '\n', len - offset);
+            if (nl) {
 
-            objPtr = Jim_NewStringObj(interp, pt, nl - pt);
+                objPtr = Jim_NewStringObj(interp, pt, nl - pt);
 
-            aio_consume(af->readbuf, nl - pt + 1);
-            break;
+                aio_consume(af->readbuf, nl - pt + 1);
+                break;
+            }
+            offset = len;
         }
 
-        offset = len;
-        len = af->fops->reader(af, buf, AIO_BUF_LEN, nb);
-        if (len <= 0) {
+
+        if (aio_read_len(interp, af, flags, -1) != JIM_OK) {
             break;
         }
-        Jim_AppendString(interp, af->readbuf, buf, len);
     }
 
     aio_set_nonblocking(af, nb);
 
-    if (!nl && aio_eof(af)) {
+    if (!nl && aio_eof(af) && af->readbuf) {
 
         objPtr = af->readbuf;
         af->readbuf = NULL;
@@ -2682,6 +2699,13 @@ static int aio_cmd_puts(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
         strObj = argv[0];
     }
 
+#ifdef JIM_MAINTAINER
+    if (Jim_IsShared(af->writebuf)) {
+        Jim_DecrRefCount(interp, af->writebuf);
+        af->writebuf = Jim_DuplicateObj(interp, af->writebuf);
+        Jim_IncrRefCount(af->writebuf);
+    }
+#endif
     Jim_AppendObj(interp, af->writebuf, strObj);
     if (nl) {
         Jim_AppendString(interp, af->writebuf, "\n", 1);
@@ -2703,7 +2727,7 @@ static int aio_cmd_puts(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
             break;
 
         case WBUF_OPT_FULL:
-            if (wlen >= AIO_WBUF_FULL_SIZE) {
+            if (wlen >= af->wbuf_limit) {
                 wnow = 1;
             }
             break;
@@ -2872,6 +2896,7 @@ static int aio_cmd_sync(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 static int aio_cmd_buffering(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
     AioFile *af = Jim_CmdPrivData(interp);
+    Jim_Obj *resultObj;
 
     static const char * const options[] = {
         "none",
@@ -2880,17 +2905,57 @@ static int aio_cmd_buffering(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
         NULL
     };
 
-    if (Jim_GetEnum(interp, argv[0], options, &af->wbuft, NULL, JIM_ERRMSG) != JIM_OK) {
-        return JIM_ERR;
+    if (argc) {
+        if (Jim_GetEnum(interp, argv[0], options, &af->wbuft, NULL, JIM_ERRMSG) != JIM_OK) {
+            return JIM_ERR;
+        }
+
+        if (af->wbuft == WBUF_OPT_FULL && argc == 2) {
+            long l;
+            if (Jim_GetLong(interp, argv[1], &l) != JIM_OK || l <= 0) {
+                return JIM_ERR;
+            }
+            af->wbuf_limit = l;
+        }
+
+        if (af->wbuft == WBUF_OPT_NONE) {
+            if (aio_flush(interp, af) != JIM_OK) {
+                return JIM_ERR;
+            }
+        }
+
     }
 
-    if (af->wbuft == WBUF_OPT_NONE) {
-        return aio_flush(interp, af);
+    resultObj = Jim_NewListObj(interp, NULL, 0);
+    Jim_ListAppendElement(interp, resultObj, Jim_NewStringObj(interp, options[af->wbuft], -1));
+    if (af->wbuft == WBUF_OPT_FULL) {
+        Jim_ListAppendElement(interp, resultObj, Jim_NewIntObj(interp, af->wbuf_limit));
+    }
+    Jim_SetResult(interp, resultObj);
+
+    return JIM_OK;
+}
+
+static int aio_cmd_readsize(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+{
+    AioFile *af = Jim_CmdPrivData(interp);
+
+    if (argc) {
+        long l;
+        if (Jim_GetLong(interp, argv[0], &l) != JIM_OK || l <= 0) {
+            return JIM_ERR;
+        }
+        af->rbuf_len = l;
+        if (af->rbuf) {
+            af->rbuf = Jim_Realloc(af->rbuf, af->rbuf_len);
+        }
     }
+    Jim_SetResultInt(interp, af->rbuf_len);
 
     return JIM_OK;
 }
 
+#ifdef jim_ext_eventloop
 static int aio_cmd_timeout(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
 #ifdef HAVE_SELECT
@@ -2908,7 +2973,6 @@ static int aio_cmd_timeout(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 #endif
 }
 
-#ifdef jim_ext_eventloop
 static int aio_eventinfo(Jim_Interp *interp, AioFile * af, unsigned mask,
     int argc, Jim_Obj * const *argv)
 {
@@ -3076,9 +3140,16 @@ static const jim_subcmd_type aio_command_table[] = {
     },
 #endif
     {   "buffering",
-        "none|line|full",
+        "?none|line|full? ?size?",
         aio_cmd_buffering,
-        1,
+        0,
+        2,
+
+    },
+    {   "readsize",
+        "?size?",
+        aio_cmd_readsize,
+        0,
         1,
 
     },
@@ -3321,6 +3392,9 @@ static AioFile *JimMakeChannel(Jim_Interp *interp, int fd, Jim_Obj *filename,
 
     af->writebuf = Jim_NewStringObj(interp, NULL, 0);
     Jim_IncrRefCount(af->writebuf);
+    af->wbuf_limit = AIO_DEFAULT_WBUF_LIMIT;
+    af->rbuf_len = AIO_DEFAULT_RBUF_LEN;
+
 
     Jim_CreateCommand(interp, buf, JimAioSubCmdProc, af, JimAioDelProc);
 
@@ -6719,53 +6793,6 @@ int Jim_arrayInit(Jim_Interp *interp)
     Jim_CreateCommand(interp, "array", Jim_SubCmdProc, (void *)array_command_table, NULL);
     return JIM_OK;
 }
-
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/wait.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-
-
-#ifdef HAVE_SYS_SYSINFO_H
-#include <sys/sysinfo.h>
-#endif
-
-static void Jim_PosixSetError(Jim_Interp *interp)
-{
-    Jim_SetResultString(interp, strerror(errno), -1);
-}
-
-#if defined(HAVE_FORK)
-static int Jim_PosixForkCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
-{
-    pid_t pid;
-
-    JIM_NOTUSED(argv);
-
-    if (argc != 1) {
-        Jim_WrongNumArgs(interp, 1, argv, "");
-        return JIM_ERR;
-    }
-    if ((pid = fork()) == -1) {
-        Jim_PosixSetError(interp);
-        return JIM_ERR;
-    }
-    Jim_SetResultInt(interp, (jim_wide) pid);
-    return JIM_OK;
-}
-#endif
-
-
-int Jim_posixInit(Jim_Interp *interp)
-{
-    Jim_PackageProvideCheck(interp, "posix");
-#ifdef HAVE_FORK
-    Jim_CreateCommand(interp, "os.fork", Jim_PosixForkCommand, NULL, NULL);
-#endif
-    return JIM_OK;
-}
 int Jim_InitStaticExtensions(Jim_Interp *interp)
 {
 extern int Jim_bootstrapInit(Jim_Interp *);
@@ -6775,7 +6802,6 @@ extern int Jim_regexpInit(Jim_Interp *);
 extern int Jim_fileInit(Jim_Interp *);
 extern int Jim_globInit(Jim_Interp *);
 extern int Jim_execInit(Jim_Interp *);
-extern int Jim_posixInit(Jim_Interp *);
 extern int Jim_clockInit(Jim_Interp *);
 extern int Jim_arrayInit(Jim_Interp *);
 extern int Jim_stdlibInit(Jim_Interp *);
@@ -6787,7 +6813,6 @@ Jim_regexpInit(interp);
 Jim_fileInit(interp);
 Jim_globInit(interp);
 Jim_execInit(interp);
-Jim_posixInit(interp);
 Jim_clockInit(interp);
 Jim_arrayInit(interp);
 Jim_stdlibInit(interp);
@@ -11458,6 +11483,9 @@ void Jim_FreeInterp(Jim_Interp *i)
         JimFreeCallFrame(i, cf, JIM_FCF_FULL);
     }
 
+
+    Jim_FreeHashTable(&i->commands);
+
     Jim_DecrRefCount(i, i->emptyObj);
     Jim_DecrRefCount(i, i->trueObj);
     Jim_DecrRefCount(i, i->falseObj);
@@ -11469,8 +11497,6 @@ void Jim_FreeInterp(Jim_Interp *i)
     Jim_DecrRefCount(i, i->nullScriptObj);
     Jim_DecrRefCount(i, i->currentFilenameObj);
 
-    Jim_FreeHashTable(&i->commands);
-
 
     Jim_InterpIncrProcEpoch(i);
 
@@ -17625,7 +17651,7 @@ static int Jim_LoopCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *arg
 {
     int retval;
     jim_wide i;
-    jim_wide limit;
+    jim_wide limit = 0;
     jim_wide incr = 1;
     Jim_Obj *bodyObjPtr;
 
@@ -20937,11 +20963,12 @@ char **Jim_GetEnviron(void)
 {
 #if defined(HAVE__NSGETENVIRON)
     return *_NSGetEnviron();
+#elif defined(_environ)
+    return _environ;
 #else
     #if !defined(NO_ENVIRON_EXTERN)
     extern char **environ;
     #endif
-
     return environ;
 #endif
 }
@@ -20950,6 +20977,8 @@ void Jim_SetEnviron(char **env)
 {
 #if defined(HAVE__NSGETENVIRON)
     *_NSGetEnviron() = env;
+#elif defined(_environ)
+    _environ = env;
 #else
     #if !defined(NO_ENVIRON_EXTERN)
     extern char **environ;
@@ -23568,7 +23597,7 @@ void Jim_SetResultErrno(Jim_Interp *interp, const char *msg)
     Jim_SetResultFormatted(interp, "%s: %s", msg, strerror(Jim_Errno()));
 }
 
-#if defined(__MINGW32__)
+#if defined(_WIN32) || defined(WIN32)
 #include <sys/stat.h>
 
 int Jim_Errno(void)
diff --git a/autosetup/system.tcl b/autosetup/system.tcl
index f23781b..05d378a 100644
--- a/autosetup/system.tcl
+++ b/autosetup/system.tcl
@@ -55,6 +55,8 @@ options {
 	program-prefix:
 	program-suffix:
 	program-transform-name:
+	x-includes:
+	x-libraries:
 }
 
 # @check-feature name { script }
@@ -318,95 +320,101 @@ proc make-template {template {out {}}} {
 	}
 }
 
-# build/host tuples and cross-compilation prefix
-opt-str build build ""
-define build_alias $build
-if {$build eq ""} {
-	define build [config_guess]
-} else {
-	define build [config_sub $build]
-}
+proc system-init {} {
+	global autosetup
 
-opt-str host host ""
-define host_alias $host
-if {$host eq ""} {
-	define host [get-define build]
-	set cross ""
-} else {
-	define host [config_sub $host]
-	set cross $host-
-}
-define cross [get-env CROSS $cross]
+	# build/host tuples and cross-compilation prefix
+	opt-str build build ""
+	define build_alias $build
+	if {$build eq ""} {
+		define build [config_guess]
+	} else {
+		define build [config_sub $build]
+	}
 
-# build/host _cpu, _vendor and _os
-foreach type {build host} {
-	set v [get-define $type]
-	if {![regexp {^([^-]+)-([^-]+)-(.*)$} $v -> cpu vendor os]} {
-		user-error "Invalid canonical $type: $v"
+	opt-str host host ""
+	define host_alias $host
+	if {$host eq ""} {
+		define host [get-define build]
+		set cross ""
+	} else {
+		define host [config_sub $host]
+		set cross $host-
 	}
-	define ${type}_cpu $cpu
-	define ${type}_vendor $vendor
-	define ${type}_os $os
-}
+	define cross [get-env CROSS $cross]
 
-opt-str prefix prefix /usr/local
-
-# These are for compatibility with autoconf
-define target [get-define host]
-define prefix $prefix
-define builddir $autosetup(builddir)
-define srcdir $autosetup(srcdir)
-define top_srcdir $autosetup(srcdir)
-define abs_top_srcdir [file-normalize $autosetup(srcdir)]
-define abs_top_builddir [file-normalize $autosetup(builddir)]
-
-# autoconf supports all of these
-define exec_prefix [opt-str exec-prefix exec_prefix $prefix]
-foreach {name defpath} {
-	bindir /bin
-	sbindir /sbin
-	libexecdir /libexec
-	libdir /lib
-} {
-	define $name [opt-str $name o $exec_prefix$defpath]
-}
-foreach {name defpath} {
-	datadir /share
-	sharedstatedir /com
-	infodir /share/info
-	mandir /share/man
-	includedir /include
-} {
-	define $name [opt-str $name o $prefix$defpath]
-}
-if {$prefix ne {/usr}} {
-	opt-str sysconfdir sysconfdir $prefix/etc
-} else {
-	opt-str sysconfdir sysconfdir /etc
-}
-define sysconfdir $sysconfdir
+	# build/host _cpu, _vendor and _os
+	foreach type {build host} {
+		set v [get-define $type]
+		if {![regexp {^([^-]+)-([^-]+)-(.*)$} $v -> cpu vendor os]} {
+			user-error "Invalid canonical $type: $v"
+		}
+		define ${type}_cpu $cpu
+		define ${type}_vendor $vendor
+		define ${type}_os $os
+	}
+
+	opt-str prefix prefix /usr/local
+
+	# These are for compatibility with autoconf
+	define target [get-define host]
+	define prefix $prefix
+	define builddir $autosetup(builddir)
+	define srcdir $autosetup(srcdir)
+	define top_srcdir $autosetup(srcdir)
+	define abs_top_srcdir [file-normalize $autosetup(srcdir)]
+	define abs_top_builddir [file-normalize $autosetup(builddir)]
+
+	# autoconf supports all of these
+	define exec_prefix [opt-str exec-prefix exec_prefix $prefix]
+	foreach {name defpath} {
+		bindir /bin
+		sbindir /sbin
+		libexecdir /libexec
+		libdir /lib
+	} {
+		define $name [opt-str $name o $exec_prefix$defpath]
+	}
+	foreach {name defpath} {
+		datadir /share
+		sharedstatedir /com
+		infodir /share/info
+		mandir /share/man
+		includedir /include
+	} {
+		define $name [opt-str $name o $prefix$defpath]
+	}
+	if {$prefix ne {/usr}} {
+		opt-str sysconfdir sysconfdir $prefix/etc
+	} else {
+		opt-str sysconfdir sysconfdir /etc
+	}
+	define sysconfdir $sysconfdir
 
-define localstatedir [opt-str localstatedir o /var]
-define runstatedir [opt-str runstatedir o /run]
+	define localstatedir [opt-str localstatedir o /var]
+	define runstatedir [opt-str runstatedir o /run]
 
-define SHELL [get-env SHELL [find-an-executable sh bash ksh]]
+	define SHELL [get-env SHELL [find-an-executable sh bash ksh]]
 
-# These could be used to generate Makefiles following some automake conventions
-define AM_SILENT_RULES [opt-bool silent-rules]
-define AM_MAINTAINER_MODE [opt-bool maintainer-mode]
-define AM_DEPENDENCY_TRACKING [opt-bool dependency-tracking]
+	# These could be used to generate Makefiles following some automake conventions
+	define AM_SILENT_RULES [opt-bool silent-rules]
+	define AM_MAINTAINER_MODE [opt-bool maintainer-mode]
+	define AM_DEPENDENCY_TRACKING [opt-bool dependency-tracking]
 
-# Windows vs. non-Windows
-switch -glob -- [get-define host] {
-	*-*-ming* - *-*-cygwin - *-*-msys {
-		define-feature windows
-		define EXEEXT .exe
-	}
-	default {
-		define EXEEXT ""
+	# Windows vs. non-Windows
+	switch -glob -- [get-define host] {
+		*-*-ming* - *-*-cygwin - *-*-msys {
+			define-feature windows
+			define EXEEXT .exe
+		}
+		default {
+			define EXEEXT ""
+		}
 	}
+
+	# Display
+	msg-result "Host System...[get-define host]"
+	msg-result "Build System...[get-define build]"
 }
 
-# Display
-msg-result "Host System...[get-define host]"
-msg-result "Build System...[get-define build]"
+system-init