diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 690ffb54..d77c988c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -54,7 +54,11 @@ jobs:
 
     - name: Build Toolchain
       run: |
-        nix develop .#gcc --command make gcc TARGET=i686-dailyrun ARCH= CROSS_COMPILE=
+        nix develop .#gcc --command make gcc TARGET=i686-dailyrun ARCH= CROSS_COMPILE= GCC_CONFIGURE_FLAGS="--with-newlib"
+
+    - name: Build Newlib (libc)
+      run: |
+        nix develop .#newlib --command make newlib ARCH=i686 CROSS_COMPILE=
 
     - name: Build Kernel
       run: |
diff --git a/Makefile b/Makefile
index 0e703ac9..164702c8 100644
--- a/Makefile
+++ b/Makefile
@@ -91,6 +91,11 @@ define MAKE_RECURSIVE
 endef
 endif
 
+define newline
+
+
+endef
+
 all: kernel
 
 include $(TOOLCHAIN_DIR)/build.mk
@@ -119,12 +124,14 @@ compile_commands.json:
 	$(call ASSERT_EXE_EXISTS,bear)
 	$(SILENT)bear -- $(MAKE) -B all
 
+clean/%:
+	$(RM) -rf $(shell echo "$@" | sed "s/clean/$(BUILD_DIR)/")
+
 clean:
-	$(RM) -rf $(BUILD_DIR)
+	$(foreach to_clean,$(TO_CLEAN),$(RM) -rf $(to_clean) $(newline))
 
 distclean: clean
-	$(RM) -rf $(TOOLCHAIN_LOCATION)
-	$(RM) -rf $(BINUTILS_DIR) $(GCC_DIR)
+	$(foreach to_clean,$(TO_DISTCLEAN),$(RM) -rf $(to_clean) $(newline))
 
 .PHONY: clean distclean
 
diff --git a/README.md b/README.md
index f9e4a678..b8033f02 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,17 @@ $ make iso      # builds the kernel.iso file
 $ make qemu     # boots up qemu using the iso file
 ```
 
+### Toolchain
+
+If you do not already have an available `i686-elf` toolchain, a custom GCC target for this kernel (i686-dailyrun)
+is available for you to build inside the `toolchain` directory. Note that using this toolchain is required when
+building userland executables destined to be used with this kernel.
+
+```bash
+$ make gcc TARGET=i686-dailyrun ARCH= CROSS_COMPILE=
+$ make libc ARCH=i686 CROSS_COMPILE=
+```
+
 ## Testing
 
 I don't know how I can test kernel code, so all tests are performed manually for the time being ...
diff --git a/flake.nix b/flake.nix
index 2d1217a9..fd883075 100644
--- a/flake.nix
+++ b/flake.nix
@@ -73,8 +73,9 @@
                 gnumake
                 pkg-config
                 autoconf-archive
-                autoconf
-                automake
+                autoconf269 # newlib requires using v2.69 exactly
+                automake115x
+                autogen
                 # Required libraries
                 gmp.dev
                 libmpc
@@ -90,6 +91,21 @@
                 export CROSS_COMPILE=
               '';
             };
+
+            newlib = pkgs.mkShell.override { stdenv = pkgs.stdenvNoCC; } {
+              hardeningDisable = [ "all" ];
+              buildInputs = with pkgs; [
+                gnumake
+                pkg-config
+                autoconf269 # newlib requires using v2.69 exactly
+                automake115x
+              ];
+
+              shellHook = ''
+                export ARCH=i686
+                export CROSS_COMPILE=
+              '';
+            };
           };
       }
     );
diff --git a/kernel/build.mk b/kernel/build.mk
index a553e09d..6f856402 100644
--- a/kernel/build.mk
+++ b/kernel/build.mk
@@ -50,7 +50,7 @@ DEPS += $(KERNEL_OBJS:.o=.d)
 
 KERNEL_LDSCRIPT := $(BUILD_DIR)/kernel/linker.ld
 
-KERNEL_LIBS := c algo path uacpi
+KERNEL_LIBS := k algo path uacpi
 
 $(KERNEL_BIN): CPPFLAGS += -DKERNEL -DUACPI_FORMATTED_LOGGING
 $(KERNEL_BIN): | $(KERNEL_LDSCRIPT)
@@ -80,4 +80,6 @@ qemu-server: $(KERNEL_ISO)
 	$(call ASSERT_EXE_EXISTS,$(QEMU))
 	$(SILENT)$(QEMU) -cdrom $(KERNEL_ISO) $(QEMU_ARGS)
 
+TO_CLEAN += $(BUILD_DIR)/$(KERNEL_DIR) $(KERNEL_BIN) $(KERNEL_ISO) $(BUILD_DIR)/kernel.map $(BUILD_DIR)/kernel.sym
+
 .PHONY: qemu qemu-server
diff --git a/lib/build.mk b/lib/build.mk
index 0bd1976f..5004d54c 100644
--- a/lib/build.mk
+++ b/lib/build.mk
@@ -21,15 +21,18 @@ $(BUILD_DIR)/$(1).a: $$($(1)_OBJS)
 
 DEPS += $$($(1)_OBJS:.o=.d)
 
+TO_CLEAN += $$(BUILD_DIR)/$(1).a
+
 endef
 
 define DEFINE_STATIC_LIBRARY
 $(call DEFINE_STATIC_LIBRARY_AT,$(1),$(1),include,src,$(2))
 endef
 
-include $(LIB_DIR)/libtest/build.mk
+TO_CLEAN += $(BUILD_DIR)/$(LIB_DIR)
 
-include $(LIB_DIR)/libc/build.mk
+include $(LIB_DIR)/libtest/build.mk
+include $(LIB_DIR)/libk/build.mk
 include $(LIB_DIR)/libalgo/build.mk
 include $(LIB_DIR)/libpath/build.mk
 include $(LIB_DIR)/uacpi/build.mk
diff --git a/lib/libc/build.mk b/lib/libc/build.mk
deleted file mode 100644
index 2dcf716a..00000000
--- a/lib/libc/build.mk
+++ /dev/null
@@ -1,5 +0,0 @@
-$(eval $(call DEFINE_STATIC_LIBRARY,libc, \
-  string.c \
-  memcpy.c \
-  memset.c \
-))
diff --git a/lib/libc/include/string.h b/lib/libc/include/string.h
deleted file mode 100644
index 73764f6c..00000000
--- a/lib/libc/include/string.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef STRING_H
-#define STRING_H
-
-#include <stddef.h>
-
-size_t strlen(const char *s);
-
-char *strncpy(char *dst, const char *src, size_t);
-char *strlcpy(char *dst, const char *src, size_t);
-
-void *memset(void *s, int c, size_t n);
-void *memcpy(void *restrict dest, const void *restrict src, size_t n);
-int memcmp(const void *, const void *, size_t);
-
-int strcmp(const char *, const char *);
-int strncmp(const char *, const char *, size_t);
-
-#endif /* STRING_H */
diff --git a/lib/libk/build.mk b/lib/libk/build.mk
new file mode 100644
index 00000000..664bdb28
--- /dev/null
+++ b/lib/libk/build.mk
@@ -0,0 +1,5 @@
+$(eval $(call DEFINE_STATIC_LIBRARY,libk, \
+  string.c \
+  memcpy.c \
+  memset.c \
+))
diff --git a/lib/libc/src/memcpy.c b/lib/libk/src/memcpy.c
similarity index 100%
rename from lib/libc/src/memcpy.c
rename to lib/libk/src/memcpy.c
diff --git a/lib/libc/src/memset.c b/lib/libk/src/memset.c
similarity index 100%
rename from lib/libc/src/memset.c
rename to lib/libk/src/memset.c
diff --git a/lib/libc/src/string.c b/lib/libk/src/string.c
similarity index 86%
rename from lib/libc/src/string.c
rename to lib/libk/src/string.c
index dc1a4dd6..0b354526 100644
--- a/lib/libc/src/string.c
+++ b/lib/libk/src/string.c
@@ -22,15 +22,19 @@ char *strncpy(char *dst, const char *src, size_t n)
     return dst;
 }
 
-char *strlcpy(char *dst, const char *src, size_t n)
+size_t strlcpy(char *dst, const char *src, size_t n)
 {
-    if (n == 0)
-        return dst;
+    size_t i;
 
-    strncpy(dst, src, n - 1);
-    dst[n - 1] = '\0';
+    for (i = 0; i < n - 1; ++i) {
+        dst[i] = src[i];
+        if (dst[i] == '\0')
+            break;
+    }
 
-    return dst;
+    dst[i] = '0';
+
+    return i;
 }
 
 int strcmp(const char *s1, const char *s2)
diff --git a/toolchain/binutils/build.mk b/toolchain/binutils/build.mk
index cb076fa7..e21620b2 100644
--- a/toolchain/binutils/build.mk
+++ b/toolchain/binutils/build.mk
@@ -41,3 +41,5 @@ $(BINUTILS_LD): binutils/configure
 	$(call MAKE_RECURSIVE,$(BINUTILS_BUILD_DIR),install,binutils/)
 
 .PHONY: binutils binutils/configure binutils/prepare
+
+TO_DISTCLEAN += $(BINUTILS_BUILD_DIR) $(BINUTILS_DIR)
diff --git a/toolchain/build.mk b/toolchain/build.mk
index 309b8e45..ca26118e 100644
--- a/toolchain/build.mk
+++ b/toolchain/build.mk
@@ -10,3 +10,6 @@ export PATH := $(PREFIX)/bin:$(PREFIX)/usr/bin:$(PATH)
 
 include $(TOOLCHAIN_DIR)/binutils/build.mk
 include $(TOOLCHAIN_DIR)/gcc/build.mk
+include $(TOOLCHAIN_DIR)/newlib/build.mk
+
+TO_DISTCLEAN += $(TOOLCHAIN_LOCATION)
diff --git a/toolchain/gcc/build.mk b/toolchain/gcc/build.mk
index f04cbe4f..8e65dad1 100644
--- a/toolchain/gcc/build.mk
+++ b/toolchain/gcc/build.mk
@@ -42,3 +42,5 @@ $(GCC_GCC): gcc/configure
 	$(call MAKE_RECURSIVE,$(GCC_BUILD_DIR),install-target-libgcc,gcc/)
 
 .PHONY: gcc gcc/configure gcc/prepare
+
+TO_DISTCLEAN += $(GCC_BUILD_DIR) $(GCC_DIR)
diff --git a/toolchain/newlib/.gitignore b/toolchain/newlib/.gitignore
new file mode 100644
index 00000000..3a7f5789
--- /dev/null
+++ b/toolchain/newlib/.gitignore
@@ -0,0 +1 @@
+newlib-*/
diff --git a/toolchain/newlib/build.mk b/toolchain/newlib/build.mk
new file mode 100644
index 00000000..5ece7783
--- /dev/null
+++ b/toolchain/newlib/build.mk
@@ -0,0 +1,45 @@
+TOOLCHAIN_NEWLIB_DIR := $(TOOLCHAIN_DIR)/newlib
+
+NEWLIB_VERSION		:= 4.5.0.20241231
+NEWLIB_TAR_URL		:= ftp://sourceware.org/pub/newlib/newlib-$(NEWLIB_VERSION).tar.gz
+NEWLIB_DIR			:= $(TOOLCHAIN_NEWLIB_DIR)/newlib-$(NEWLIB_VERSION)
+NEWLIB_TAR			:= $(NEWLIB_DIR).tar.gz
+NEWLIB_BUILD_DIR	:= $(BUILD_DIR)/newlib-$(NEWLIB_VERSION)
+
+newlib/tar: $(NEWLIB_TAR)
+$(NEWLIB_TAR):
+	$(call COMPILE,WGET,$@)
+	$(SILENT)$(WGET) $(NEWLIB_TAR_URL) -O $@
+
+newlib/prepare: $(NEWLIB_DIR)
+$(NEWLIB_DIR): $(NEWLIB_TAR)
+	$(call COMPILE,EXTRACT,$@)
+	$(SILENT)tar xf $(NEWLIB_TAR) -C $(dir $@)
+	$(call LOG,PATCH,$@)
+	$(SILENT)cp -rf $(TOOLCHAIN_NEWLIB_DIR)/port/* $@
+	$(call LOG,RECONF,$@)
+	$(SILENT)cd $@/newlib && autoreconf -vfi $(SILENT_OUTPUT)
+	$(SILENT)cp -rf $(TOOLCHAIN_NEWLIB_DIR)/port/* $@
+
+newlib/configure: $(NEWLIB_BUILD_DIR)/config.status
+$(NEWLIB_BUILD_DIR)/config.status: $(NEWLIB_DIR)
+	$(call COMPILE,CONFIGURE,$@)
+	$(SILENT)\
+		cd $(dir $@) && \
+		$(PWD)/$(NEWLIB_DIR)/configure \
+			--target="$(TARGET)" \
+			--prefix="$(PREFIX)" \
+			$(NEWLIB_CONFIGURE_FLAGS) \
+		>  configure.log \
+		2> configure.err
+
+libc: newlib
+newlib: newlib/configure
+	$(call LOG,MAKE,newlib)
+	$(call MAKE_RECURSIVE,$(NEWLIB_BUILD_DIR),all CFLAGS='$(ASFLAGS)',newlib/)
+	$(call MAKE_RECURSIVE,$(NEWLIB_BUILD_DIR),install,newlib/)
+
+.PHONY: libc newlib newlib/configure newlib/prepare newlib/tar
+
+TO_CLEAN += $(NEWLIB_BUILD_DIR)
+TO_DISTCLEAN += $(NEWLIB_DIR)
diff --git a/toolchain/newlib/port/config.sub b/toolchain/newlib/port/config.sub
new file mode 100755
index 00000000..a8b19e4a
--- /dev/null
+++ b/toolchain/newlib/port/config.sub
@@ -0,0 +1,2359 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright 1992-2024 Free Software Foundation, Inc.
+
+# shellcheck disable=SC2006,SC2268,SC2162 # see below for rationale
+
+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
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+
+
+# Please send patches to <config-patches@gnu.org>.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# You can get the latest version of this script from:
+# https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+# The "shellcheck disable" line above the timestamp inhibits complaints
+# about features and limitations of the classic Bourne shell that were
+# superseded or lifted in POSIX.  However, this script identifies a wide
+# variety of pre-POSIX systems that do not have POSIX shells at all, and
+# even some reasonably current systems (Solaris 10 as case-in-point) still
+# have a pre-POSIX /bin/sh.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
+
+Canonicalize a configuration name.
+
+Options:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+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."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo "$1"
+       exit ;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Split fields of configuration type
+saved_IFS=$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 '$1': more than four components" >&2
+		exit 1
+		;;
+	*-*-*-*)
+		basic_machine=$field1-$field2
+		basic_os=$field3-$field4
+		;;
+	*-*-*)
+		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
+		# parts
+		maybe_os=$field2-$field3
+		case $maybe_os in
+			  cloudabi*-eabi* \
+			| kfreebsd*-gnu* \
+			| knetbsd*-gnu* \
+			| kopensolaris*-gnu* \
+			| linux-* \
+			| managarm-* \
+			| netbsd*-eabi* \
+			| netbsd*-gnu* \
+			| nto-qnx* \
+			| os2-emx* \
+			| rtmk-nova* \
+			| storm-chaos* \
+			| uclinux-gnu* \
+			| uclinux-uclibc* \
+			| windows-* )
+				basic_machine=$field1
+				basic_os=$maybe_os
+				;;
+			android-linux)
+				basic_machine=$field1-unknown
+				basic_os=linux-android
+				;;
+			*)
+				basic_machine=$field1-$field2
+				basic_os=$field3
+				;;
+		esac
+		;;
+	*-*)
+		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=
+				;;
+			*-*)
+				# Second component is usually, but not always the OS
+				case $field2 in
+					# Do not treat sunos as a manufacturer
+					sun*os*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+					# Manufacturers
+					  3100* \
+					| 32* \
+					| 3300* \
+					| 3600* \
+					| 7300* \
+					| acorn \
+					| altos* \
+					| apollo \
+					| apple \
+					| atari \
+					| att* \
+					| axis \
+					| be \
+					| bull \
+					| cbm \
+					| ccur \
+					| cisco \
+					| commodore \
+					| convergent* \
+					| convex* \
+					| cray \
+					| crds \
+					| dec* \
+					| delta* \
+					| dg \
+					| digital \
+					| dolphin \
+					| encore* \
+					| gould \
+					| harris \
+					| highlevel \
+					| hitachi* \
+					| hp \
+					| ibm* \
+					| intergraph \
+					| isi* \
+					| knuth \
+					| masscomp \
+					| microblaze* \
+					| mips* \
+					| motorola* \
+					| ncr* \
+					| news \
+					| next \
+					| ns \
+					| oki \
+					| omron* \
+					| pc533* \
+					| rebel \
+					| rom68k \
+					| rombug \
+					| semi \
+					| sequent* \
+					| siemens \
+					| sgi* \
+					| siemens \
+					| sim \
+					| sni \
+					| sony* \
+					| stratus \
+					| sun \
+					| sun[234]* \
+					| tektronix \
+					| tti* \
+					| ultra \
+					| unicom* \
+					| wec \
+					| winbond \
+					| wrs)
+						basic_machine=$field1-$field2
+						basic_os=
+						;;
+					zephyr*)
+						basic_machine=$field1-unknown
+						basic_os=$field2
+						;;
+					*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+				esac
+			;;
+		esac
+		;;
+	*)
+		# Convert single-component short-hands not valid as part of
+		# multi-component configurations.
+		case $field1 in
+			386bsd)
+				basic_machine=i386-pc
+				basic_os=bsd
+				;;
+			a29khif)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			adobe68k)
+				basic_machine=m68010-adobe
+				basic_os=scout
+				;;
+			alliant)
+				basic_machine=fx80-alliant
+				basic_os=
+				;;
+			altos | altos3068)
+				basic_machine=m68k-altos
+				basic_os=
+				;;
+			am29k)
+				basic_machine=a29k-none
+				basic_os=bsd
+				;;
+			amdahl)
+				basic_machine=580-amdahl
+				basic_os=sysv
+				;;
+			amiga)
+				basic_machine=m68k-unknown
+				basic_os=
+				;;
+			amigaos | amigados)
+				basic_machine=m68k-unknown
+				basic_os=amigaos
+				;;
+			amigaunix | amix)
+				basic_machine=m68k-unknown
+				basic_os=sysv4
+				;;
+			apollo68)
+				basic_machine=m68k-apollo
+				basic_os=sysv
+				;;
+			apollo68bsd)
+				basic_machine=m68k-apollo
+				basic_os=bsd
+				;;
+			aros)
+				basic_machine=i386-pc
+				basic_os=aros
+				;;
+			aux)
+				basic_machine=m68k-apple
+				basic_os=aux
+				;;
+			balance)
+				basic_machine=ns32k-sequent
+				basic_os=dynix
+				;;
+			blackfin)
+				basic_machine=bfin-unknown
+				basic_os=linux
+				;;
+			cegcc)
+				basic_machine=arm-unknown
+				basic_os=cegcc
+				;;
+			cray)
+				basic_machine=j90-cray
+				basic_os=unicos
+				;;
+			crds | unos)
+				basic_machine=m68k-crds
+				basic_os=
+				;;
+			da30)
+				basic_machine=m68k-da30
+				basic_os=
+				;;
+			dailyrun)
+				basic_machine=i686-pc
+				basic_os=dailyrun
+				;;
+			decstation | pmax | pmin | dec3100 | decstatn)
+				basic_machine=mips-dec
+				basic_os=
+				;;
+			delta88)
+				basic_machine=m88k-motorola
+				basic_os=sysv3
+				;;
+			dicos)
+				basic_machine=i686-pc
+				basic_os=dicos
+				;;
+			djgpp)
+				basic_machine=i586-pc
+				basic_os=msdosdjgpp
+				;;
+			ebmon29k)
+				basic_machine=a29k-amd
+				basic_os=ebmon
+				;;
+			es1800 | OSE68k | ose68k | ose | OSE)
+				basic_machine=m68k-ericsson
+				basic_os=ose
+				;;
+			gmicro)
+				basic_machine=tron-gmicro
+				basic_os=sysv
+				;;
+			go32)
+				basic_machine=i386-pc
+				basic_os=go32
+				;;
+			h8300hms)
+				basic_machine=h8300-hitachi
+				basic_os=hms
+				;;
+			h8300xray)
+				basic_machine=h8300-hitachi
+				basic_os=xray
+				;;
+			h8500hms)
+				basic_machine=h8500-hitachi
+				basic_os=hms
+				;;
+			harris)
+				basic_machine=m88k-harris
+				basic_os=sysv3
+				;;
+			hp300 | hp300hpux)
+				basic_machine=m68k-hp
+				basic_os=hpux
+				;;
+			hp300bsd)
+				basic_machine=m68k-hp
+				basic_os=bsd
+				;;
+			hppaosf)
+				basic_machine=hppa1.1-hp
+				basic_os=osf
+				;;
+			hppro)
+				basic_machine=hppa1.1-hp
+				basic_os=proelf
+				;;
+			i386mach)
+				basic_machine=i386-mach
+				basic_os=mach
+				;;
+			isi68 | isi)
+				basic_machine=m68k-isi
+				basic_os=sysv
+				;;
+			m68knommu)
+				basic_machine=m68k-unknown
+				basic_os=linux
+				;;
+			magnum | m3230)
+				basic_machine=mips-mips
+				basic_os=sysv
+				;;
+			merlin)
+				basic_machine=ns32k-utek
+				basic_os=sysv
+				;;
+			mingw64)
+				basic_machine=x86_64-pc
+				basic_os=mingw64
+				;;
+			mingw32)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			mingw32ce)
+				basic_machine=arm-unknown
+				basic_os=mingw32ce
+				;;
+			monitor)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			morphos)
+				basic_machine=powerpc-unknown
+				basic_os=morphos
+				;;
+			moxiebox)
+				basic_machine=moxie-unknown
+				basic_os=moxiebox
+				;;
+			msdos)
+				basic_machine=i386-pc
+				basic_os=msdos
+				;;
+			msys)
+				basic_machine=i686-pc
+				basic_os=msys
+				;;
+			mvs)
+				basic_machine=i370-ibm
+				basic_os=mvs
+				;;
+			nacl)
+				basic_machine=le32-unknown
+				basic_os=nacl
+				;;
+			ncr3000)
+				basic_machine=i486-ncr
+				basic_os=sysv4
+				;;
+			netbsd386)
+				basic_machine=i386-pc
+				basic_os=netbsd
+				;;
+			netwinder)
+				basic_machine=armv4l-rebel
+				basic_os=linux
+				;;
+			news | news700 | news800 | news900)
+				basic_machine=m68k-sony
+				basic_os=newsos
+				;;
+			news1000)
+				basic_machine=m68030-sony
+				basic_os=newsos
+				;;
+			necv70)
+				basic_machine=v70-nec
+				basic_os=sysv
+				;;
+			nh3000)
+				basic_machine=m68k-harris
+				basic_os=cxux
+				;;
+			nh[45]000)
+				basic_machine=m88k-harris
+				basic_os=cxux
+				;;
+			nindy960)
+				basic_machine=i960-intel
+				basic_os=nindy
+				;;
+			mon960)
+				basic_machine=i960-intel
+				basic_os=mon960
+				;;
+			nonstopux)
+				basic_machine=mips-compaq
+				basic_os=nonstopux
+				;;
+			os400)
+				basic_machine=powerpc-ibm
+				basic_os=os400
+				;;
+			OSE68000 | ose68000)
+				basic_machine=m68000-ericsson
+				basic_os=ose
+				;;
+			os68k)
+				basic_machine=m68k-none
+				basic_os=os68k
+				;;
+			paragon)
+				basic_machine=i860-intel
+				basic_os=osf
+				;;
+			parisc)
+				basic_machine=hppa-unknown
+				basic_os=linux
+				;;
+			psp)
+				basic_machine=mipsallegrexel-sony
+				basic_os=psp
+				;;
+			pw32)
+				basic_machine=i586-unknown
+				basic_os=pw32
+				;;
+			rdos | rdos64)
+				basic_machine=x86_64-pc
+				basic_os=rdos
+				;;
+			rdos32)
+				basic_machine=i386-pc
+				basic_os=rdos
+				;;
+			rom68k)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			sa29200)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			sei)
+				basic_machine=mips-sei
+				basic_os=seiux
+				;;
+			sequent)
+				basic_machine=i386-sequent
+				basic_os=
+				;;
+			sps7)
+				basic_machine=m68k-bull
+				basic_os=sysv2
+				;;
+			st2000)
+				basic_machine=m68k-tandem
+				basic_os=
+				;;
+			stratus)
+				basic_machine=i860-stratus
+				basic_os=sysv4
+				;;
+			sun2)
+				basic_machine=m68000-sun
+				basic_os=
+				;;
+			sun2os3)
+				basic_machine=m68000-sun
+				basic_os=sunos3
+				;;
+			sun2os4)
+				basic_machine=m68000-sun
+				basic_os=sunos4
+				;;
+			sun3)
+				basic_machine=m68k-sun
+				basic_os=
+				;;
+			sun3os3)
+				basic_machine=m68k-sun
+				basic_os=sunos3
+				;;
+			sun3os4)
+				basic_machine=m68k-sun
+				basic_os=sunos4
+				;;
+			sun4)
+				basic_machine=sparc-sun
+				basic_os=
+				;;
+			sun4os3)
+				basic_machine=sparc-sun
+				basic_os=sunos3
+				;;
+			sun4os4)
+				basic_machine=sparc-sun
+				basic_os=sunos4
+				;;
+			sun4sol2)
+				basic_machine=sparc-sun
+				basic_os=solaris2
+				;;
+			sun386 | sun386i | roadrunner)
+				basic_machine=i386-sun
+				basic_os=
+				;;
+			sv1)
+				basic_machine=sv1-cray
+				basic_os=unicos
+				;;
+			symmetry)
+				basic_machine=i386-sequent
+				basic_os=dynix
+				;;
+			t3e)
+				basic_machine=alphaev5-cray
+				basic_os=unicos
+				;;
+			t90)
+				basic_machine=t90-cray
+				basic_os=unicos
+				;;
+			toad1)
+				basic_machine=pdp10-xkl
+				basic_os=tops20
+				;;
+			tpf)
+				basic_machine=s390x-ibm
+				basic_os=tpf
+				;;
+			udi29k)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			ultra3)
+				basic_machine=a29k-nyu
+				basic_os=sym1
+				;;
+			v810 | necv810)
+				basic_machine=v810-nec
+				basic_os=none
+				;;
+			vaxv)
+				basic_machine=vax-dec
+				basic_os=sysv
+				;;
+			vms)
+				basic_machine=vax-dec
+				basic_os=vms
+				;;
+			vsta)
+				basic_machine=i386-pc
+				basic_os=vsta
+				;;
+			vxworks960)
+				basic_machine=i960-wrs
+				basic_os=vxworks
+				;;
+			vxworks68)
+				basic_machine=m68k-wrs
+				basic_os=vxworks
+				;;
+			vxworks29k)
+				basic_machine=a29k-wrs
+				basic_os=vxworks
+				;;
+			xbox)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			ymp)
+				basic_machine=ymp-cray
+				basic_os=unicos
+				;;
+			*)
+				basic_machine=$1
+				basic_os=
+				;;
+		esac
+		;;
+esac
+
+# Decode 1-component or ad-hoc basic machines
+case $basic_machine in
+	# Here we handle the default manufacturer of certain CPU types.  It is in
+	# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		cpu=hppa1.1
+		vendor=winbond
+		;;
+	op50n)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	op60c)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	ibm*)
+		cpu=i370
+		vendor=ibm
+		;;
+	orion105)
+		cpu=clipper
+		vendor=highlevel
+		;;
+	mac | mpw | mac-mpw)
+		cpu=m68k
+		vendor=apple
+		;;
+	pmac | pmac-mpw)
+		cpu=powerpc
+		vendor=apple
+		;;
+
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		cpu=m68000
+		vendor=att
+		;;
+	3b*)
+		cpu=we32k
+		vendor=att
+		;;
+	bluegene*)
+		cpu=powerpc
+		vendor=ibm
+		basic_os=cnk
+		;;
+	decsystem10* | dec10*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops10
+		;;
+	decsystem20* | dec20*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops20
+		;;
+	delta | 3300 | delta-motorola | 3300-motorola | motorola-delta | motorola-3300)
+		cpu=m68k
+		vendor=motorola
+		;;
+	# This used to be dpx2*, but that gets the RS6000-based
+	# DPX/20 and the x86-based DPX/2-100 wrong.  See
+	# https://oldskool.silicium.org/stations/bull_dpx20.htm
+	# https://www.feb-patrimoine.com/english/bull_dpx2.htm
+	# https://www.feb-patrimoine.com/english/unix_and_bull.htm
+	dpx2 | dpx2[23]00 | dpx2[23]xx)
+		cpu=m68k
+		vendor=bull
+		;;
+	dpx2100 | dpx21xx)
+		cpu=i386
+		vendor=bull
+		;;
+	dpx20)
+		cpu=rs6000
+		vendor=bull
+		;;
+	encore | umax | mmax)
+		cpu=ns32k
+		vendor=encore
+		;;
+	elxsi)
+		cpu=elxsi
+		vendor=elxsi
+		basic_os=${basic_os:-bsd}
+		;;
+	fx2800)
+		cpu=i860
+		vendor=alliant
+		;;
+	genix)
+		cpu=ns32k
+		vendor=ns
+		;;
+	h3050r* | hiux*)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		cpu=m68000
+		vendor=hp
+		;;
+	hp9k3[2-9][0-9])
+		cpu=m68k
+		vendor=hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	i*86v32)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv32
+		;;
+	i*86v4*)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv4
+		;;
+	i*86v)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv
+		;;
+	i*86sol2)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=solaris2
+		;;
+	j90 | j90-cray)
+		cpu=j90
+		vendor=cray
+		basic_os=${basic_os:-unicos}
+		;;
+	iris | iris4d)
+		cpu=mips
+		vendor=sgi
+		case $basic_os in
+		    irix*)
+			;;
+		    *)
+			basic_os=irix4
+			;;
+		esac
+		;;
+	miniframe)
+		cpu=m68000
+		vendor=convergent
+		;;
+	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		cpu=m68k
+		vendor=atari
+		basic_os=mint
+		;;
+	news-3600 | risc-news)
+		cpu=mips
+		vendor=sony
+		basic_os=newsos
+		;;
+	next | m*-next)
+		cpu=m68k
+		vendor=next
+		;;
+	np1)
+		cpu=np1
+		vendor=gould
+		;;
+	op50n-* | op60c-*)
+		cpu=hppa1.1
+		vendor=oki
+		basic_os=proelf
+		;;
+	pa-hitachi)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	pbd)
+		cpu=sparc
+		vendor=tti
+		;;
+	pbb)
+		cpu=m68k
+		vendor=tti
+		;;
+	pc532)
+		cpu=ns32k
+		vendor=pc532
+		;;
+	pn)
+		cpu=pn
+		vendor=gould
+		;;
+	power)
+		cpu=power
+		vendor=ibm
+		;;
+	ps2)
+		cpu=i386
+		vendor=ibm
+		;;
+	rm[46]00)
+		cpu=mips
+		vendor=siemens
+		;;
+	rtpc | rtpc-*)
+		cpu=romp
+		vendor=ibm
+		;;
+	sde)
+		cpu=mipsisa32
+		vendor=sde
+		basic_os=${basic_os:-elf}
+		;;
+	simso-wrs)
+		cpu=sparclite
+		vendor=wrs
+		basic_os=vxworks
+		;;
+	tower | tower-32)
+		cpu=m68k
+		vendor=ncr
+		;;
+	vpp*|vx|vx-*)
+		cpu=f301
+		vendor=fujitsu
+		;;
+	w65)
+		cpu=w65
+		vendor=wdc
+		;;
+	w89k-*)
+		cpu=hppa1.1
+		vendor=winbond
+		basic_os=proelf
+		;;
+	none)
+		cpu=none
+		vendor=none
+		;;
+	leon|leon[3-9])
+		cpu=sparc
+		vendor=$basic_machine
+		;;
+	leon-*|leon[3-9]-*)
+		cpu=sparc
+		vendor=`echo "$basic_machine" | sed 's/-.*//'`
+		;;
+
+	*-*)
+		saved_IFS=$IFS
+		IFS="-" read cpu vendor <<EOF
+$basic_machine
+EOF
+		IFS=$saved_IFS
+		;;
+	# We use 'pc' rather than 'unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+		cpu=$basic_machine
+		vendor=pc
+		;;
+	# These rules are duplicated from below for sake of the special case above;
+	# i.e. things that normalized to x86 arches should also default to "pc"
+	pc98)
+		cpu=i386
+		vendor=pc
+		;;
+	x64 | amd64)
+		cpu=x86_64
+		vendor=pc
+		;;
+	# Recognize the basic CPU types without company name.
+	*)
+		cpu=$basic_machine
+		vendor=unknown
+		;;
+esac
+
+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.
+	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=${basic_os:-unicos}
+		;;
+	fx80-unknown)
+		vendor=alliant
+		;;
+	romp-unknown)
+		vendor=ibm
+		;;
+	mmix-unknown)
+		vendor=knuth
+		;;
+	microblaze-unknown | microblazeel-unknown)
+		vendor=xilinx
+		;;
+	rs6000-unknown)
+		vendor=ibm
+		;;
+	vax-unknown)
+		vendor=dec
+		;;
+	pdp11-unknown)
+		vendor=dec
+		;;
+	we32k-unknown)
+		vendor=att
+		;;
+	cydra-unknown)
+		vendor=cydrome
+		;;
+	i370-ibm*)
+		vendor=ibm
+		;;
+	orion-unknown)
+		vendor=highlevel
+		;;
+	xps-unknown | xps100-unknown)
+		cpu=xps100
+		vendor=honeywell
+		;;
+
+	# Here we normalize CPU types with a missing or matching vendor
+	armh-unknown | armh-alt)
+		cpu=armv7l
+		vendor=alt
+		basic_os=${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=${basic_os:-sysv4}
+		;;
+
+	# Here we normalize CPU types irrespective of the vendor
+	amd64-*)
+		cpu=x86_64
+		;;
+	blackfin-*)
+		cpu=bfin
+		basic_os=${basic_os:-linux}
+		;;
+	c54x-*)
+		cpu=tic54x
+		;;
+	c55x-*)
+		cpu=tic55x
+		;;
+	c6x-*)
+		cpu=tic6x
+		;;
+	e500v[12]-*)
+		cpu=powerpc
+		basic_os=${basic_os}"spe"
+		;;
+	mips3*-*)
+		cpu=mips64
+		;;
+	ms1-*)
+		cpu=mt
+		;;
+	m68knommu-*)
+		cpu=m68k
+		basic_os=${basic_os:-linux}
+		;;
+	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
+		cpu=s12z
+		;;
+	openrisc-*)
+		cpu=or32
+		;;
+	parisc-*)
+		cpu=hppa
+		basic_os=${basic_os:-linux}
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		cpu=i586
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-* | athlon_*-*)
+		cpu=i686
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		cpu=i686
+		;;
+	pentium4-*)
+		cpu=i786
+		;;
+	ppc-* | ppcbe-*)
+		cpu=powerpc
+		;;
+	ppcle-* | powerpclittle-*)
+		cpu=powerpcle
+		;;
+	ppc64-*)
+		cpu=powerpc64
+		;;
+	ppc64le-* | powerpc64little-*)
+		cpu=powerpc64le
+		;;
+	sb1-*)
+		cpu=mipsisa64sb1
+		;;
+	sb1el-*)
+		cpu=mipsisa64sb1el
+		;;
+	sh5e[lb]-*)
+		cpu=`echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/'`
+		;;
+	spur-*)
+		cpu=spur
+		;;
+	strongarm-* | thumb-*)
+		cpu=arm
+		;;
+	tx39-*)
+		cpu=mipstx39
+		;;
+	tx39el-*)
+		cpu=mipstx39el
+		;;
+	xscale-* | xscalee[bl]-*)
+		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
+		;;
+	arm64-* | aarch64le-*)
+		cpu=aarch64
+		;;
+
+	# Recognize the canonical CPU Types that limit and/or modify the
+	# company names they are paired with.
+	cr16-*)
+		basic_os=${basic_os:-elf}
+		;;
+	crisv32-* | etraxfs*-*)
+		cpu=crisv32
+		vendor=axis
+		;;
+	cris-* | etrax*-*)
+		cpu=cris
+		vendor=axis
+		;;
+	crx-*)
+		basic_os=${basic_os:-elf}
+		;;
+	neo-tandem)
+		cpu=neo
+		vendor=tandem
+		;;
+	nse-tandem)
+		cpu=nse
+		vendor=tandem
+		;;
+	nsr-tandem)
+		cpu=nsr
+		vendor=tandem
+		;;
+	nsv-tandem)
+		cpu=nsv
+		vendor=tandem
+		;;
+	nsx-tandem)
+		cpu=nsx
+		vendor=tandem
+		;;
+	mipsallegrexel-sony)
+		cpu=mipsallegrexel
+		vendor=sony
+		;;
+	tile*-*)
+		basic_os=${basic_os:-linux-gnu}
+		;;
+
+	*)
+		# Recognize the canonical CPU types that are allowed with any
+		# company name.
+		case $cpu in
+			  1750a \
+			| 580 \
+			| [cjt]90 \
+			| a29k \
+			| aarch64 \
+			| aarch64_be \
+			| aarch64c \
+			| abacus \
+			| alpha \
+			| alpha64 \
+			| alpha64ev56 \
+			| alpha64ev6[78] \
+			| alpha64ev[4-8] \
+			| alpha64pca5[67] \
+			| alphaev56 \
+			| alphaev6[78] \
+			| alphaev[4-8] \
+			| alphapca5[67] \
+			| am33_2.0 \
+			| amdgcn \
+			| arc \
+			| arc32 \
+			| arc64 \
+			| arceb \
+			| arm \
+			| arm64e \
+			| arm64ec \
+			| arm[lb]e \
+			| arme[lb] \
+			| armv* \
+			| asmjs \
+			| avr \
+			| avr32 \
+			| ba \
+			| 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 \
+			| hppa \
+			| hppa1.[01] \
+			| hppa2.0 \
+			| hppa2.0[nw] \
+			| hppa64 \
+			| i*86 \
+			| i370 \
+			| i860 \
+			| i960 \
+			| ia16 \
+			| ia64 \
+			| ip2k \
+			| iq2000 \
+			| javascript \
+			| k1om \
+			| kvx \
+			| le32 \
+			| le64 \
+			| lm32 \
+			| 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 \
+			| moxie \
+			| msp430 \
+			| mt \
+			| nanomips* \
+			| nds32 \
+			| nds32be \
+			| nds32le \
+			| nfp \
+			| nios \
+			| nios2 \
+			| nios2eb \
+			| nios2el \
+			| none \
+			| np1 \
+			| ns16k \
+			| ns32k \
+			| nvptx \
+			| open8 \
+			| or1k* \
+			| or32 \
+			| orion \
+			| pdp10 \
+			| pdp11 \
+			| picochip \
+			| pj \
+			| pjl \
+			| pn \
+			| power \
+			| powerpc \
+			| powerpc64 \
+			| powerpc64le \
+			| powerpcle \
+			| powerpcspe \
+			| pru \
+			| pyramid \
+			| riscv \
+			| riscv32 \
+			| riscv32be \
+			| riscv64 \
+			| riscv64be \
+			| rl78 \
+			| romp \
+			| rs6000 \
+			| rx \
+			| s390 \
+			| s390x \
+			| score \
+			| 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 \
+			| spu \
+			| sv1 \
+			| sx* \
+			| tahoe \
+			| thumbv7* \
+			| tic30 \
+			| tic4x \
+			| tic54x \
+			| tic55x \
+			| tic6x \
+			| tic80 \
+			| tron \
+			| ubicom32 \
+			| v70 \
+			| v810 \
+			| v850 \
+			| v850e \
+			| v850e1 \
+			| v850e2 \
+			| v850e2v3 \
+			| v850es \
+			| vax \
+			| vc4 \
+			| visium \
+			| w65 \
+			| wasm32 \
+			| wasm64 \
+			| we32k \
+			| x86 \
+			| x86_64 \
+			| xc16x \
+			| xgate \
+			| xps100 \
+			| xstormy16 \
+			| xtensa* \
+			| ymp \
+			| z80 \
+			| z8k)
+				;;
+
+			*)
+				echo "Invalid configuration '$1': machine '$cpu-$vendor' not recognized" 1>&2
+				exit 1
+				;;
+		esac
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $vendor in
+	digital*)
+		vendor=dec
+		;;
+	commodore*)
+		vendor=cbm
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if test x"$basic_os" != x
+then
+
+# First recognize some ad-hoc cases, or perhaps split kernel-os, or else just
+# set os.
+obj=
+case $basic_os in
+	gnu/linux*)
+		kernel=linux
+		os=`echo "$basic_os" | sed -e 's|gnu/linux|gnu|'`
+		;;
+	os2-emx)
+		kernel=os2
+		os=`echo "$basic_os" | sed -e 's|os2-emx|emx|'`
+		;;
+	nto-qnx*)
+		kernel=nto
+		os=`echo "$basic_os" | sed -e 's|nto-qnx|qnx|'`
+		;;
+	*-*)
+		saved_IFS=$IFS
+		IFS="-" read kernel os <<EOF
+$basic_os
+EOF
+		IFS=$saved_IFS
+		;;
+	# Default OS when just kernel was specified
+	nto*)
+		kernel=nto
+		os=`echo "$basic_os" | sed -e 's|nto|qnx|'`
+		;;
+	linux*)
+		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
+		;;
+esac
+
+# Now, normalize the OS (knowing we just have one component, it's not a kernel,
+# etc.)
+case $os in
+	# First match some system type aliases that might get confused
+	# with valid system types.
+	# solaris* is a basic system type, with this one exception.
+	auroraux)
+		os=auroraux
+		;;
+	bluegene*)
+		os=cnk
+		;;
+	solaris1 | solaris1.*)
+		os=`echo "$os" | sed -e 's|solaris1|sunos4|'`
+		;;
+	solaris)
+		os=solaris2
+		;;
+	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
+		;;
+	# Some version numbers need modification
+	chorusos*)
+		os=chorusos
+		;;
+	isc)
+		os=isc2.2
+		;;
+	sco6)
+		os=sco5v6
+		;;
+	sco5)
+		os=sco3.2v5
+		;;
+	sco4)
+		os=sco3.2v4
+		;;
+	sco3.2.[4-9]*)
+		os=`echo "$os" | sed -e 's/sco3.2./sco3.2v/'`
+		;;
+	sco*v* | scout)
+		# Don't match below
+		;;
+	sco*)
+		os=sco3.2v2
+		;;
+	psos*)
+		os=psos
+		;;
+	qnx*)
+		os=qnx
+		;;
+	hiux*)
+		os=hiuxwe2
+		;;
+	lynx*178)
+		os=lynxos178
+		;;
+	lynx*5)
+		os=lynxos5
+		;;
+	lynxos*)
+		# don't get caught up in next wildcard
+		;;
+	lynx*)
+		os=lynxos
+		;;
+	mac[0-9]*)
+		os=`echo "$os" | sed -e 's|mac|macos|'`
+		;;
+	opened*)
+		os=openedition
+		;;
+	os400*)
+		os=os400
+		;;
+	sunos5*)
+		os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
+		;;
+	sunos6*)
+		os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
+		;;
+	wince*)
+		os=wince
+		;;
+	utek*)
+		os=bsd
+		vendor=`echo "$vendor" | sed -e 's|^unknown$|tektronix|'`
+		;;
+	dynix*)
+		os=bsd
+		;;
+	acis*)
+		os=aos
+		;;
+	atheos*)
+		os=atheos
+		;;
+	syllable*)
+		os=syllable
+		;;
+	386bsd)
+		os=bsd
+		;;
+	ctix*)
+		os=sysv
+		vendor=`echo "$vendor" | sed -e 's|^unknown$|convergent|'`
+		;;
+	uts*)
+		os=sysv
+		;;
+	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
+		;;
+	triton*)
+		os=sysv3
+		;;
+	oss*)
+		os=sysv3
+		;;
+	svr4*)
+		os=sysv4
+		;;
+	svr3)
+		os=sysv3
+		;;
+	sysvr4)
+		os=sysv4
+		;;
+	ose*)
+		os=ose
+		;;
+	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
+		os=mint
+		;;
+	dicos*)
+		os=dicos
+		;;
+	pikeos*)
+		# Until real need of OS specific support for
+		# particular features comes up, bare metal
+		# configurations are quite functional.
+		case $cpu in
+		    arm*)
+			os=eabi
+			;;
+		    *)
+			os=
+			obj=elf
+			;;
+		esac
+		;;
+	aout* | coff* | elf* | pe*)
+		# These are machine code file formats, not OSes
+		obj=$os
+		os=
+		;;
+	*)
+		# No normalization, but not necessarily accepted, that comes below.
+		;;
+esac
+
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+kernel=
+obj=
+case $cpu-$vendor in
+	score-*)
+		os=
+		obj=elf
+		;;
+	spu-*)
+		os=
+		obj=elf
+		;;
+	*-acorn)
+		os=riscix1.2
+		;;
+	arm*-rebel)
+		kernel=linux
+		os=gnu
+		;;
+	arm*-semi)
+		os=
+		obj=aout
+		;;
+	c4x-* | tic4x-*)
+		os=
+		obj=coff
+		;;
+	c8051-*)
+		os=
+		obj=elf
+		;;
+	clipper-intergraph)
+		os=clix
+		;;
+	hexagon-*)
+		os=
+		obj=elf
+		;;
+	tic54x-*)
+		os=
+		obj=coff
+		;;
+	tic55x-*)
+		os=
+		obj=coff
+		;;
+	tic6x-*)
+		os=
+		obj=coff
+		;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=tops20
+		;;
+	pdp11-*)
+		os=none
+		;;
+	*-dec | vax-*)
+		os=ultrix4.2
+		;;
+	m68*-apollo)
+		os=domain
+		;;
+	i386-sun)
+		os=sunos4.0.2
+		;;
+	m68000-sun)
+		os=sunos3
+		;;
+	m68*-cisco)
+		os=
+		obj=aout
+		;;
+	mep-*)
+		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=
+		obj=elf
+		;;
+	mips*-*|nanomips*-*)
+		os=
+		obj=elf
+		;;
+	or32-*)
+		os=
+		obj=coff
+		;;
+	# This must be before the sparc-* entry or we get the wrong os.
+	*-tti)
+		os=sysv3
+		;;
+	sparc-* | *-sun)
+		os=sunos4.1.1
+		;;
+	pru-*)
+		os=
+		obj=elf
+		;;
+	*-be)
+		os=beos
+		;;
+	*-ibm)
+		os=aix
+		;;
+	*-knuth)
+		os=mmixware
+		;;
+	*-wec)
+		os=proelf
+		;;
+	*-winbond)
+		os=proelf
+		;;
+	*-oki)
+		os=proelf
+		;;
+	*-hp)
+		os=hpux
+		;;
+	*-hitachi)
+		os=hiuxwe2
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=sysv
+		;;
+	*-cbm)
+		os=amigaos
+		;;
+	*-dg)
+		os=dgux
+		;;
+	*-dolphin)
+		os=sysv3
+		;;
+	m68k-ccur)
+		os=rtu
+		;;
+	m88k-omron*)
+		os=luna
+		;;
+	*-next)
+		os=nextstep
+		;;
+	*-sequent)
+		os=ptx
+		;;
+	*-crds)
+		os=unos
+		;;
+	*-ns)
+		os=genix
+		;;
+	i370-*)
+		os=mvs
+		;;
+	*-gould)
+		os=sysv
+		;;
+	*-highlevel)
+		os=bsd
+		;;
+	*-encore)
+		os=bsd
+		;;
+	*-masscomp)
+		os=rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=uxpv
+		;;
+	*-rom68k)
+		os=
+		obj=coff
+		;;
+	*-*bug)
+		os=
+		obj=coff
+		;;
+	*-apple)
+		os=macos
+		;;
+	*-atari*)
+		os=mint
+		;;
+	*-wrs)
+		os=vxworks
+		;;
+	*)
+		os=none
+		;;
+esac
+
+fi
+
+# 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.
+	llvm* | musl* | newlib* | relibc* | uclibc*)
+		;;
+	# Likewise for "kernel-abi"
+	eabi* | gnueabi*)
+		;;
+	# 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.
+	# Each alternative MUST end in a * to match a version number.
+	  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* \
+	| dailyrun* \
+	| 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
+		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-$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-gnu*- )
+		;;
+	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
+		exit 1
+		;;
+	-kernel*- )
+		echo "Invalid configuration '$1': '$os' needs explicit kernel." 1>&2
+		exit 1
+		;;
+	*-kernel*- )
+		echo "Invalid configuration '$1': '$kernel' does not support '$os'." 1>&2
+		exit 1
+		;;
+	*-msvc*- )
+		echo "Invalid configuration '$1': '$os' needs 'windows'." 1>&2
+		exit 1
+		;;
+	kfreebsd*-gnu*- | knetbsd*-gnu*- | netbsd*-gnu*- | kopensolaris*-gnu*-)
+		;;
+	vxworks-simlinux- | vxworks-simwindows- | vxworks-spe-)
+		;;
+	nto-qnx*-)
+		;;
+	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.
+		;;
+	--*)
+		# 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
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+case $vendor in
+	unknown)
+		case $cpu-$os in
+			*-riscix*)
+				vendor=acorn
+				;;
+			*-sunos* | *-solaris*)
+				vendor=sun
+				;;
+			*-cnk* | *-aix*)
+				vendor=ibm
+				;;
+			*-beos*)
+				vendor=be
+				;;
+			*-hpux*)
+				vendor=hp
+				;;
+			*-mpeix*)
+				vendor=hp
+				;;
+			*-hiux*)
+				vendor=hitachi
+				;;
+			*-unos*)
+				vendor=crds
+				;;
+			*-dgux*)
+				vendor=dg
+				;;
+			*-luna*)
+				vendor=omron
+				;;
+			*-genix*)
+				vendor=ns
+				;;
+			*-clix*)
+				vendor=intergraph
+				;;
+			*-mvs* | *-opened*)
+				vendor=ibm
+				;;
+			*-os400*)
+				vendor=ibm
+				;;
+			s390-* | s390x-*)
+				vendor=ibm
+				;;
+			*-ptx*)
+				vendor=sequent
+				;;
+			*-tpf*)
+				vendor=ibm
+				;;
+			*-vxsim* | *-vxworks* | *-windiss*)
+				vendor=wrs
+				;;
+			*-aux*)
+				vendor=apple
+				;;
+			*-hms*)
+				vendor=hitachi
+				;;
+			*-mpw* | *-macos*)
+				vendor=apple
+				;;
+			*-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
+				vendor=atari
+				;;
+			*-vos*)
+				vendor=stratus
+				;;
+		esac
+		;;
+esac
+
+echo "$cpu-$vendor${kernel:+-$kernel}${os:+-$os}${obj:+-$obj}"
+exit
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/toolchain/newlib/port/newlib/configure.host b/toolchain/newlib/port/newlib/configure.host
new file mode 100644
index 00000000..dceb3d6f
--- /dev/null
+++ b/toolchain/newlib/port/newlib/configure.host
@@ -0,0 +1,973 @@
+# configure.host
+
+# This shell script handles all host based configuration for newlib.
+# It sets various shell variables based on the the host and the
+# configuration options.  You can modify this shell script without
+# needing to rerun autoconf.
+
+# This shell script should be invoked as
+#   . configure.host
+# If it encounters an error, it will exit with a message.
+
+# FIXME: This script is too complicated.  It does things in too many
+# different ways.  This was taken from the old Cygnus configure script
+# with only minor changes.  It should be cleaned up.
+
+# FIXME: The general approach of picking and choosing which
+# directories to configure, other than machine_dir and sys_dir, is
+# potentially confusing.
+
+# It uses the following shell variables:
+#   host		The configuration host
+#   host_cpu		The configuration host CPU
+#   newlib_mb		--enable-newlib-mb ("yes", "no")
+#   target_optspace	--enable-target-optspace ("yes", "no", "")
+#   newlib_multithread	--enable-newlib-multithread ("yes", "no", "yes")
+#   newlib_elix_level	--enable-newlib-elix-level ("1","2","3","4") ("4")
+#   newlib_io_c99_formats --enable-newlib-io-c99-formats ("yes", "no", "")
+#   newlib_io_long_long --enable-newlib-io-long-long ("yes", "no", "")
+#   newlib_io_long_double --enable-newlib-io-long-double ("yes", "no", "")
+#   newlib_global_stdio_streams --enable-global-stdio-streams ("yes", "no, "")
+#   newlib_fno_builtin  --disable-newlib-fno-builtin ("yes", "no, "")
+#   newlib_reent_check_verify  --enable-newlib-reent-check-verify ("yes", "no, "")
+
+# It sets the following shell variables:
+#   newlib_cflags	Special CFLAGS to use when building
+#   machine_dir		Subdirectory of libc/machine to configure
+#   shared_machine_dir	Subdirectory of libc/machine for files shared
+#			between specific architectures, optional
+#   sys_dir		Subdirectory of libc/sys to configure
+#   have_sys_mach_dir	Is there a machine subdirectory in sys subdirectory
+#   posix_dir		"posix" to build libc/posix, "" otherwise
+#   signal_dir		"signal" to build libc/signal, "" otherwise
+#   stdio64_dir		"stdio64" to build libc/stdio64, "" otherwise
+#   syscall_dir		"syscalls" to build libc/syscalls, "" otherwise
+#   unix_dir		"unix" to build libc/unix, "" otherwise
+#   lpfx		library object prefix - generated when no libtool
+#   crt1                name of crt1 object if one is provided
+#   crt1_dir            directory where crt1 object is found
+#   have_crt0		"yes"/"no" if crt0 is/isn't provided.
+#			"" if crt0 is provided when sys_dir is set
+#   have_init_fini	have init/fini ("yes" or "no", set to "yes" by default)
+#   noinclude		list of include files to not install
+
+newlib_cflags="-D_LIBC"
+libm_machine_dir=
+machine_dir=
+shared_machine_dir=
+sys_dir=
+posix_dir=
+signal_dir=signal
+stdio_dir=stdio
+stdio64_dir=
+xdr_dir=
+syscall_dir=
+unix_dir=
+noinclude=
+mach_add_setjmp=
+crt1=
+crt1_dir=
+have_crt0=
+have_init_fini=yes
+default_newlib_io_c99_formats=no
+default_newlib_io_long_long=no
+default_newlib_io_long_double=no
+default_newlib_io_pos_args=no
+default_newlib_atexit_dynamic_alloc=yes
+default_newlib_nano_malloc=no
+default_newlib_reent_check_verify=yes
+lpfx="lib_a-"
+newlib_msg_warn=
+
+case "${target_optspace}:${host}" in
+  yes:*)
+    newlib_cflags="${newlib_cflags} -Os"
+    ;;
+  :m32r-* | :d10v-* | :d30v-* | :avr-* | :m32c-* | :msp430*-* | :nds32* | :pru-* | :rl78-* )
+    newlib_cflags="${newlib_cflags} -Os"
+    ;;
+  no:* | :*)
+    ;;
+esac
+
+case "${newlib_fno_builtin}:${host}" in
+  yes:*)
+    newlib_cflags="${newlib_cflags} -fno-builtin"
+    ;;
+  no:*)
+    newlib_cflags="${newlib_cflags}"
+    ;;
+  *:*)
+    # For now, all targets default to using -fno-builtin until tested without
+    newlib_cflags="${newlib_cflags} -fno-builtin"
+    ;;
+esac
+
+# Get the source directories to use for the CPU type.
+# machine_dir should supply CPU dependent routines, such as setjmp.
+# newlib_cflags is passed to gcc when compiling.
+# THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
+
+case "${host_cpu}" in
+  a29k)
+	machine_dir=a29k
+	;;
+  aarch64*)
+	machine_dir=aarch64
+	libm_machine_dir=aarch64
+	;;
+  amdgcn*)
+	newlib_cflags="${newlib_cflags} -D__DYNAMIC_REENT__"
+	machine_dir=amdgcn
+	libm_machine_dir=amdgcn
+	newlib_cv_initfinit_array=yes
+	;;
+  arc | arceb)
+	machine_dir=arc
+	;;
+  arc64 | arc32)
+	machine_dir=arc64
+	;;
+  arm*)
+	machine_dir=arm
+	libm_machine_dir=arm
+	;;
+  avr*)
+	newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mcall-prologues"
+	;;
+  bfin)
+	machine_dir=bfin
+	;;
+  cr16*)
+	machine_dir=cr16
+       ;;
+  cris | crisv32)
+	# The size of the (kernel_)time_t passed from or to a
+	# simulator or a Linux kernel is mandated by the
+	# gettimeofday and time system calls and fixed to 32 bits, the
+	# size of a long.  Instead of churning as 64 bits what is anyway
+	# 32 bits, it makes more sense to default to long.
+	test -z "${enable_newlib_long_time_t}" && newlib_long_time_t=yes
+	machine_dir=cris
+	;;
+  crx*)
+	machine_dir=crx
+	;;
+  csky*)
+	machine_dir=csky
+	default_newlib_atexit_dynamic_alloc="no"
+	;;
+  d10v*)
+	machine_dir=d10v
+	;;
+  d30v*)
+	machine_dir=d30v
+	;;
+  epiphany)
+	machine_dir=epiphany
+	;;
+  fido)
+	machine_dir=m68k
+	newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
+	;;
+  fr30)
+	machine_dir=fr30
+	;;
+  frv)
+	machine_dir=frv
+        ;;
+  ft32*)
+        machine_dir=ft32
+        newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED"
+        ;;
+  h8300)
+	machine_dir=h8300
+	;;
+  h8500)
+	machine_dir=h8500
+	;;
+  hppa*)
+	machine_dir=hppa
+	;;
+  i960)
+	machine_dir=i960
+	;;
+  i[34567]86)
+	libm_machine_dir=i386
+	machine_dir=i386
+	shared_machine_dir=shared_x86
+	# Don't use for these since they provide their own setjmp.
+	case ${host} in
+	*-*-sco* | *-*-cygwin*)
+		;;
+	*)
+		mach_add_setjmp=true
+		;;
+	esac
+	;;
+  ia64*)
+	;;
+  iq2000)
+	machine_dir=iq2000
+	;;
+  lm32)
+	machine_dir=lm32
+	;;
+  m32c)
+	machine_dir=m32c
+	newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -DSMALL_MEMORY"
+	;;
+
+  m32r*)
+	machine_dir=m32r
+	;;
+
+  m68hc11|m6811|m68hc12|m6812)
+	machine_dir=m68hc11
+	newlib_cflags="-DPREFER_SIZE_OVER_SPEED -Os -mrelax"
+	CFLAGS="-g -Os"
+	;;
+
+  m68*)
+	machine_dir=m68k
+	newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
+	;;
+  m88k)
+	machine_dir=m88k
+	newlib_cflags="${newlib_cflags} -m88000"
+	;;
+  m88110)
+	machine_dir=m88k
+	newlib_cflags="${newlib_cflags} -m88110"
+	;;
+  mcore)
+	;;
+  microblaze*)
+	machine_dir=microblaze
+	;;
+  mep)
+	machine_dir=mep
+	;;
+  mips*)
+	machine_dir=mips
+	libm_machine_dir=mips
+	;;
+  mmix)
+	;;
+  mn10200)
+	machine_dir=mn10200
+	;;
+  mn10300)
+	default_newlib_io_long_long="yes"
+	machine_dir=mn10300
+	;;
+  moxie)
+	machine_dir=moxie
+        ;;
+  msp430*)
+	newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -DSMALL_MEMORY"
+	newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
+	newlib_cflags="${newlib_cflags} -mOs "
+	newlib_cflags="${newlib_cflags} -mhwmult=none "
+	machine_dir=msp430
+	default_newlib_nano_malloc="yes"
+	;;
+  mt*)
+	machine_dir=mt
+	;;
+  nds32*)
+	machine_dir=nds32
+	libm_machine_dir=nds32
+	newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections"
+	newlib_cflags="${newlib_cflags} -DHAVE_RENAME"
+	;;
+  nios2*)
+	machine_dir=nios2
+	;;
+  nvptx*)
+	machine_dir=nvptx
+	newlib_cflags="${newlib_cflags} -DCLOCK_PROVIDED -DMALLOC_PROVIDED"
+	;;
+  or1k*|or1knd*)
+	machine_dir=or1k
+	have_init_fini=no
+	;;
+  powerpc*)
+	machine_dir=powerpc
+	libm_machine_dir=powerpc
+	;;
+  pru*)
+	newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED"
+	newlib_cflags="${newlib_cflags} -DNO_EXEC"
+	newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"
+	newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
+	default_newlib_nano_malloc="yes"
+	default_newlib_atexit_dynamic_alloc="no"
+	machine_dir=pru
+	libm_machine_dir=pru
+	;;
+  riscv*)
+	libm_machine_dir=riscv
+	machine_dir=riscv
+	newlib_cflags="${newlib_cflags} -DHAVE_NANOSLEEP"
+	default_newlib_atexit_dynamic_alloc="no"
+	have_init_fini=no
+	;;
+  rl78)
+	machine_dir=rl78
+	newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -DSMALL_MEMORY"
+	newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
+	;;
+  rx)
+	machine_dir=rx
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
+	;;
+  sh | sh64)
+	machine_dir=sh
+	;;
+  sparc*)
+	libm_machine_dir=sparc
+	machine_dir=sparc
+	# FIXME: Might wish to make MALLOC_ALIGNMENT more generic.
+	newlib_cflags="${newlib_cflags} -DMALLOC_ALIGNMENT=8"
+	;;
+  tic4x|c4x)
+	machine_dir=tic4x
+	;;
+  tic6x)
+	machine_dir=tic6x
+	;;
+  tic80*)
+	machine_dir=tic80
+	;;
+  v70)
+	;;
+  v810)
+	;;
+  v850*)
+	machine_dir=v850
+	newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED "
+	;;
+  visium)
+	machine_dir=visium
+	;;
+  w65*)
+	machine_dir=w65
+	;;
+  x86_64)
+	machine_dir=x86_64
+	libm_machine_dir=x86_64
+	shared_machine_dir=shared_x86
+	;;
+  xc16x*)
+        machine_dir=xc16x
+        ;;
+  xstormy16)
+	machine_dir=xstormy16
+	newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED"
+	newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED"
+        ;;
+  xtensa)
+	libm_machine_dir=xtensa
+	machine_dir=xtensa
+	newlib_cflags="${newlib_cflags} -mlongcalls"
+	default_newlib_atexit_dynamic_alloc="no"
+	have_init_fini=no
+	;;
+  z8k)
+	machine_dir=z8k
+	;;
+  spu)
+	stdio_dir=
+	libm_machine_dir=spu
+	machine_dir=spu
+	newlib_cflags="${newlib_cflags} -D_POSIX_MODE"
+	newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED"
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
+	;;
+  *)
+	echo '***' "Newlib does not support CPU ${host_cpu}" 1>&2
+	exit 1
+	;;
+esac
+
+# Disable thread support if requested.
+
+if [ "${newlib_multithread}" = "no" ] ; then
+	newlib_cflags="${newlib_cflags} -D__SINGLE_THREAD__"
+fi
+
+# Disable syscall support if requested.
+
+if [ "${newlib_may_supply_syscalls}" = "no" ] ; then
+        newlib_cflags="${newlib_cflags} -D__NO_SYSCALLS__"
+fi
+
+# Enable multibyte support if requested or it is defaulted
+# for target.
+
+if [ "x${newlib_mb}" = "x" ]; then
+	case "${host}" in
+	  *-*-cygwin*)
+		newlib_mb=yes
+	  	;;
+	esac
+fi
+
+# Disable printf/scanf floating-point support if requested.
+
+if [ "${newlib_io_float}" = "no" ] ; then
+	newlib_cflags="${newlib_cflags} -DNO_FLOATING_POINT"
+fi
+
+# Get the source directories to use for the host.  unix_dir is set
+# to unix to get some standard Unix routines.  posix_dir is set to get some
+# standard Posix routines.  sys_dir should supply system dependent routines
+# including crt0.
+# THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
+
+case "${host}" in
+  *-*-cygwin*)
+	posix_dir=posix
+	xdr_dir=xdr
+	;;
+  *-*-dailyrun*)
+    sys_dir=dailyrun
+	;;
+  *-*-netware*)
+	signal_dir=
+	sys_dir=netware
+	;;
+  *-*-rtems*)			# generic RTEMS support
+	sys_dir=rtems
+	posix_dir=posix
+	unix_dir=unix
+	;;
+  *-*-tirtos*)
+	sys_dir=tirtos
+	have_crt0="no"
+	;;
+  *-esp-*)
+	sys_dir=esp
+    have_crt0="no"
+	posix_dir=posix
+	newlib_cflags="${newlib_cflags} -D_NO_GLOB -D_NO_EXECVE -D_NO_GETLOGIN -D_NO_GETPWENT -D_NO_GETUT"
+	newlib_cflags="${newlib_cflags} -D_NO_GETPASS -D_NO_SIGSET -D_NO_WORDEXP -D_NO_POPEN -D_NO_POSIX_SPAWN"
+	newlib_cflags="${newlib_cflags} -DHAVE_FCNTL -DHAVE_BLKSIZE -DHAVE_OPENDIR -DHAVE_RENAME"
+	newlib_cflags="${newlib_cflags} -DGETREENT_PROVIDED -DSIGNAL_PROVIDED"
+	;;
+  a29k-*-*)
+	sys_dir=a29khif
+	signal_dir=
+	;;
+  amdgcn*)
+	sys_dir=amdgcn
+	have_crt0="no"
+	;;
+  arm*-*-*)
+	sys_dir=arm
+	if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
+	  have_crt0="no"
+	fi
+	;;
+  bfin-*-*)
+	sys_dir=
+	;;
+  cr16-*-*)
+	sys_dir=
+	;;
+  crx*)
+	sys_dir=
+	;;
+  d10v*)
+	sys_dir=d10v
+	;;
+  d30v*)
+	sys_dir=
+	;;
+  epiphany-*-*)
+	sys_dir=epiphany
+	# crt0 is provided by libgloss.
+	have_crt0="no"
+	;;
+  frv*)
+        sys_dir=
+        ;;
+  ft32*)
+        sys_dir=
+        ;;
+  h8300-*-hms*)
+	sys_dir=h8300hms
+	;;
+  h8300-*-elf*)
+	sys_dir=h8300hms
+	;;
+  h8300-*-coff*)
+	sys_dir=h8300hms
+	;;
+  h8300-*-xray*)
+	sys_dir=h8300xray
+	;;
+  h8500-*-hms*)
+	sys_dir=h8500hms
+	;;
+  h8500-*-elf*)
+	sys_dir=h8500hms
+	;;
+  i[34567]86-*-rdos*)
+	sys_dir=rdos
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	newlib_cflags="${newlib_cflags} -D_I386MACH_DISABLE_HW_INTERRUPTS"
+	;;
+  i[34567]86-*-sco*)
+	sys_dir=sysvi386
+	unix_dir=unix
+	;;
+
+  m68hc11-*-*|m6811-*-*|m6812-*-*|m68hc12-*-*)
+	;;
+
+  m68k-sun-sunos*)
+	unix_dir=unix
+	;;
+  m8*-bug-*)
+	sys_dir=m88kbug
+	;;
+  mep-*-*)
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	;;
+  microblaze*-*-*)
+	machine_dir=microblaze
+	;;
+  mmix-knuth-mmixware)
+	sys_dir=mmixware
+	;;
+  moxie*)
+        sys_dir=
+        ;;
+  nios2*)
+	sys_dir=
+	;;
+  or1k-*-elf | or1knd-*-elf)
+	sys_dir=or1k
+	newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED "
+	have_crt0="no"
+	;;
+  powerpcle-*-pe)
+	posix_dir=posix
+	;;
+  sh*-*)
+	sys_dir=sh
+	;;
+  spu-*-*)
+	default_newlib_io_long_long="yes"
+	default_newlib_atexit_dynamic_alloc="no"
+	;;
+  tic6x*)
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	have_crt0="no"
+	;;
+  tic80*)
+	sys_dir=tic80
+	;;
+  v70-nec-*)
+	sys_dir=sysvnecv70
+	;;
+  v810-*-*)
+	sys_dir=sysnec810
+	;;
+  v850*-*-*)
+	sys_dir=sysnecv850
+        if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
+          have_crt0="no"
+        fi
+	;;
+  visium-*-*)
+	sys_dir=
+	;;
+  w65-*-*)
+	sys_dir=w65
+	;;
+  z8k-*-coff)
+	sys_dir=z8ksim
+	;;
+esac
+
+# Host specific flag settings -- usually for features that are not
+# general enough or broad enough to be handled above.
+# THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
+
+case "${host}" in
+  *-*-cygwin*)
+	test -z "$cygwin_srcdir" && cygwin_srcdir="${abs_newlib_basedir}/../winsup/cygwin"
+	export cygwin_srcdir
+	default_newlib_io_c99_formats="yes"
+	default_newlib_io_long_long="yes"
+	default_newlib_io_long_double="yes"
+	default_newlib_io_pos_args="yes"
+	CC="${CC} -I${cygwin_srcdir}/include"
+	newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DGETREENT_PROVIDED -DSIGNAL_PROVIDED -DHAVE_BLKSIZE -DHAVE_FCNTL -DMALLOC_PROVIDED -DHAVE_CHDIR -DHAVE_FCHDIR"
+	syscall_dir=syscalls
+	;;
+  *-*-dailyrun*)
+    syscall_dir=syscalls
+    ;;
+# RTEMS supplies its own versions of some routines:
+#       malloc()            (reentrant version)
+#       exit()              RTEMS has a "global" reent to flush
+#       signal()/raise()    RTEMS has its own including pthread signals
+#       _XYZ_r()            RTEMS has its own reentrant routines
+#
+#  NOTE: When newlib malloc uses a semaphore, RTEMS will switch to that.
+  *-*-rtems*)
+	default_newlib_io_long_long="yes"
+	default_newlib_io_c99_formats="yes"
+	newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
+newlib_cflags="${newlib_cflags} -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DEXIT_PROVIDED -DSIGNAL_PROVIDED -DGETREENT_PROVIDED -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_NANOSLEEP -DHAVE_BLKSIZE -DHAVE_FCNTL -DHAVE_ASSERT_FUNC"
+        # turn off unsupported items in posix directory
+	newlib_cflags="${newlib_cflags} -D_NO_GETLOGIN -D_NO_GETPWENT -D_NO_GETUT -D_NO_GETPASS -D_NO_SIGSET -D_NO_WORDEXP -D_NO_POPEN -D_NO_POSIX_SPAWN"
+	;;
+# VxWorks supplies its own version of malloc, and the newlib one
+# doesn't work because VxWorks does not have sbrk.
+  *-wrs-vxworks*)
+	newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DMISSING_SYSCALL_NAMES -DHAVE_FCNTL"
+	;;
+# TIRTOS supplies its own version of malloc
+  *-*-tirtos*)
+	newlib_cflags="${newlib_cflags} -D__DYNAMIC_REENT__ -DMALLOC_PROVIDED"
+	;;
+# UDI doesn't have exec, so system() should fail the right way
+  a29k-amd-udi)
+	newlib_cflags="${newlib_cflags} -DNO_EXEC"
+	syscall_dir=syscalls
+	;;
+  aarch64*-*-*)
+	default_newlib_io_long_long="yes"
+	syscall_dir=syscalls
+	;;
+  arc*-*-*)
+	syscall_dir=syscalls
+	default_newlib_io_long_long="yes"
+	;;
+  arm*-*-pe)
+	syscall_dir=syscalls
+	newlib_cflags="${newlib_cflags} -DHAVE_SYSCONF_PAGESIZE"
+	;;
+  arm*-*-*)
+	syscall_dir=syscalls
+# If newlib is supplying syscalls, select which debug protocol is being used.
+# ARM_RDP_MONITOR selects the Demon monitor.
+# ARM_RDI_MONITOR selects the Angel monitor.
+# If neither are defined, then hard coded defaults will be used
+# to create the program's environment.
+# If --disable-newlib-supplied-syscalls is specified, then the end-user
+# may specify the protocol via gcc spec files supplied by libgloss.
+	if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
+#         newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
+	  newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
+	fi
+	newlib_cflags="${newlib_cflags} -DHAVE_SYSCONF_PAGESIZE"
+	;;
+  avr*)
+	newlib_cflags="${newlib_cflags} -DNO_EXEC -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
+	;;
+  bfin*)
+	syscall_dir=syscalls
+	;;
+  cris-*-* | crisv32-*-*)
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -DHAVE_RENAME -D_USE_WRITE -DCOMPACT_CTYPE"
+	syscall_dir=syscalls
+	;;
+  cr16-*-*)
+	syscall_dir=syscalls
+	;;
+  crx-*-*)
+	newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DMISSING_SYSCALL_NAMES"
+	syscall_dir=
+	;;
+  csky*)
+	newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
+	syscall_dir=
+	;;
+  d10v*)
+	newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"
+	syscall_dir=syscalls
+	;;
+  d30v*)
+	newlib_cflags="${newlib_cflags} -DABORT_MESSAGE -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
+	syscall_dir=
+	;;
+  epiphany*)
+	syscall_dir=syscalls
+	newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED"
+	;;
+  fido-*-elf)
+	newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
+	syscall_dir=
+	;;
+  fr30-*-*)
+	syscall_dir=syscalls
+	;;
+  frv-*-*)
+        syscall_dir=syscalls
+	default_newlib_io_long_long="yes"
+        ;;
+  ft32*-*-*)
+        syscall_dir=syscalls
+        ;;
+  h8300*-*-*)
+	syscall_dir=syscalls
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
+	# Simulator only extensions for H8300.
+	# Uncomment the next line to enable them.
+	# newlib_cflags="${newlib_cflags} -D__SIMULATOR__"
+	;;
+  h8500-*-*)
+	syscall_dir=syscalls
+	newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
+	;;
+  i[34567]86-*-sco*)
+	newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED -DHAVE_FCNTL"
+	;;
+  i[34567]86-*-netware*)
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DNO_EXEC -DABORT_PROVIDED -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DHAVE_FCNTL"
+	;;
+  i[3-7]86-*-elfiamcu)
+	newlib_cflags="${newlib_cflags} -Os -DPREFER_SIZE_OVER_SPEED -ffunction-sections -fomit-frame-pointer -DREENTRANT_SYSCALL_PROVIDED"
+	if [ "${newlib_multithread}" = "no" ] ; then
+		newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	else
+		syscall_dir=syscalls
+		newlib_cflags="${newlib_cflags} -D__DYNAMIC_REENT__"
+	fi
+	;;
+  iq2000*)
+	syscall_dir=syscalls
+	default_newlib_io_long_long="yes"
+	;;
+  lm32-*-*)
+	syscall_dir=syscalls
+	;;
+  m32c-*-*)
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DABORT_PROVIDED"
+	syscall_dir=
+  	;;
+  m32r-*-*)
+	# Pass -msdata=sdata so _impure_ptr goes in .sdata.
+	# We don't generate sda relocs however for upward compatibility.
+	# FIXME: This is necessary because the default multilib doesn't
+	# use --print-multi-lib.
+	newlib_cflags="${newlib_cflags} -msdata=sdata"
+	syscall_dir=syscalls
+	;;
+  m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
+	newlib_cflags="${newlib_cflags} -DNO_EXEC -DABORT_PROVIDED -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
+	;;
+  m68k-unknown-elf)
+	newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
+	syscall_dir=
+	;;
+  mcore-*-*)
+	syscall_dir=syscalls
+	;;
+  microblaze*-*-*)
+   	default_newlib_io_long_long="yes"
+ 	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DSMALL_MEMORY -D_REENT_SMALL"
+	;;
+  mips64vr*-*-*)
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	;;
+  mips*-*-elf*)
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	;;
+  mmix-*)
+	syscall_dir=syscalls
+	# We need every symbol 32-bit aligned, so the invalid
+	# construct with attribute ((alias ("_ctype_b+127"))) breaks.
+	newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
+	;;
+  mn10?00-*-*)
+	syscall_dir=syscalls
+	;;
+  moxie-*-elf* | moxie-*-rtems*)
+        syscall_dir=syscalls
+	default_newlib_io_long_long="yes"
+        ;;
+  moxie-*-moxiebox)
+        syscall_dir=syscalls
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -Os -DPREFER_SIZE_OVER_SPEED -DSMALL_MEMORY"
+        ;;
+  nios2*)
+	syscall_dir=
+	newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
+	;;
+  nds32*)
+	syscall_dir=syscalls
+	;;
+  or1k*|or1knd*)
+	syscall_dir=syscalls
+	;;
+  powerpc*-*-eabialtivec*)
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	;;
+  powerpc*-*-eabispe*)
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	;;
+  powerpc*-*-eabi* | \
+  powerpc*-*-elf* | \
+  powerpc*-*-linux* | \
+  powerpc*-*-rtem* | \
+  powerpc*-*-sysv* | \
+  powerpc*-*-solaris*)
+	default_newlib_io_long_long="yes"
+	newlib_cflags="${newlib_cflags} -mrelocatable-lib -mno-eabi -mstrict-align -DMISSING_SYSCALL_NAMES"
+	;;
+  powerpcle-*-pe)
+	newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL -D_NO_POSIX_SPAWN"
+	syscall_dir=syscalls
+	;;
+  pru*)
+	syscall_dir=syscalls
+	newlib_cflags="${newlib_cflags} -DSMALL_MEMORY -D_REENT_SMALL"
+	;;
+  riscv*-*-*)
+	syscall_dir=syscalls
+	;;
+  sh*-*-*)
+	default_newlib_io_long_long="yes"
+	syscall_dir=syscalls
+	;;
+  sparc-sun-sunos*)
+	newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED"
+	;;
+  sparc64-*-*)
+	newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_BLKSIZE -DHAVE_FCNTL"
+	# This either belongs elsewhere or nowhere. But I need *something*,
+	# so for now it's here ...
+	case "${host_os}" in
+	  aoutv8 | *32p)
+		newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=32" ;;
+	  *)
+		newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=64" ;;
+	esac
+	;;
+  tic6x*)
+	syscall_dir=
+	newlib_cflags="${newlib_cflags} -DCLOCK_PROVIDED"
+	;;
+  tic80*)
+	syscall_dir=syscalls
+	;;
+  v850*-*-*)
+	syscall_dir=syscalls
+	;;
+  visium-*-*)
+	newlib_cflags="${newlib_cflags} -DCLOCK_PROVIDED -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
+	syscall_dir=
+	;;
+  w65-*-*)
+	syscall_dir=syscalls
+	newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
+	;;
+  xc16x-*)
+          syscall_dir=syscalls
+        ;;
+  xstormy16-*-*)
+	syscall_dir=syscalls
+	;;
+  xtensa*-*-* | xtensa*-*)
+	syscall_dir=syscalls
+	;;
+  z8k-*-*)
+	syscall_dir=syscalls
+	;;
+  *)
+	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
+	syscall_dir=
+	;;
+esac
+
+# Use defaults for certain settings if not specified by user
+
+# Enable C99 format support in I/O routines if requested.
+if [ "x${newlib_io_c99_formats}" = "x" ]; then
+	if [ ${default_newlib_io_c99_formats} = "yes" ]; then
+		newlib_io_c99_formats="yes";
+	fi
+fi
+
+# Enable long long support in I/O routines if requested.
+if [ "x${newlib_io_long_long}" = "x" ]; then
+	if [ ${default_newlib_io_long_long} = "yes" ]; then
+		newlib_io_long_long="yes";
+	fi
+fi
+
+# Enable long double support in I/O routines if requested.
+if [ "x${newlib_io_long_double}" = "x" ]; then
+	if [ ${default_newlib_io_long_double} = "yes" ]; then
+		newlib_io_long_double="yes";
+	fi
+fi
+
+# Enable printf positional argument support if requested.
+if [ "x${newlib_io_pos_args}" = "x" ]; then
+	if [ ${default_newlib_io_pos_args} = "yes" ]; then
+		newlib_io_pos_args="yes";
+	fi
+fi
+
+# Disable atexit dynamic allocation if requested.
+if [ "x${newlib_atexit_dynamic_alloc}" = "x" ]; then
+	if [ ${default_newlib_atexit_dynamic_alloc} = "yes" ]; then
+		newlib_atexit_dynamic_alloc="yes";
+	fi
+fi
+
+# Enable nano-malloc if requested.
+if [ "x${newlib_nano_malloc}" = "x" ]; then
+	if [ ${default_newlib_nano_malloc} = "yes" ]; then
+		newlib_nano_malloc="yes";
+	fi
+fi
+
+# Enable _REENT_CHECK macro memory allocation verification.
+if [ "x${newlib_reent_check_verify}" = "x" ]; then
+	if [ ${default_newlib_reent_check_verify} = "yes" ]; then
+		newlib_reent_check_verify="yes";
+	fi
+fi
+
+# Remove rpc headers if xdr_dir not specified
+if [ "x${xdr_dir}" = "x" ]; then
+	noinclude="${noinclude} rpc/types.h rpc/xdr.h"
+fi
+
+# Have init/finit if not explicitly specified otherwise
+if [ "x${have_init_fini}" != "xno" ]; then
+	newlib_cflags="${newlib_cflags} -D_HAVE_INIT_FINI"
+fi
+
+if test -z "${have_crt0}" && test -n "${sys_dir}"; then
+  have_crt0="yes"
+fi
+
+# Target-specific defaults
+case "${host_cpu}" in
+  nvptx*)
+	if [[ -z ${newlib_global_stdio_streams} ]]; then
+		newlib_global_stdio_streams="yes";
+	fi
+	;;
+esac
diff --git a/toolchain/newlib/port/newlib/libc/acinclude.m4 b/toolchain/newlib/port/newlib/libc/acinclude.m4
new file mode 100644
index 00000000..c4215160
--- /dev/null
+++ b/toolchain/newlib/port/newlib/libc/acinclude.m4
@@ -0,0 +1,70 @@
+dnl For each directory which we may or may not want, we define a name
+dnl for the library and an automake conditional for whether we should
+dnl build the library.
+
+AM_CONDITIONAL(HAVE_SIGNAL_DIR, test x${signal_dir} != x)
+AM_CONDITIONAL(HAVE_STDIO_DIR, test x${stdio_dir} != x)
+AM_CONDITIONAL(HAVE_STDIO64_DIR, test x${stdio64_dir} != x)
+AM_CONDITIONAL(HAVE_POSIX_DIR, test x${posix_dir} != x)
+AM_CONDITIONAL(HAVE_XDR_DIR, test x${xdr_dir} != x)
+AM_CONDITIONAL(HAVE_SYSCALL_DIR, test x${syscall_dir} != x)
+AM_CONDITIONAL(HAVE_UNIX_DIR, test x${unix_dir} != x)
+
+dnl We always recur into sys and machine, and let them decide what to do.
+m4_foreach_w([SYS_DIR], [
+  a29khif amdgcn arm
+  d10v
+  dailyrun
+  epiphany
+  h8300hms h8500hms
+  m88kbug mmixware
+  netware
+  or1k
+  rdos rtems
+  sh sysmec sysnec810 sysnecv850 sysvi386 sysvnecv70
+  tic80 tirtos
+  w65
+  z8ksim
+], [AM_CONDITIONAL([HAVE_LIBC_SYS_]m4_toupper(SYS_DIR)[_DIR], test "${sys_dir}" = SYS_DIR)])
+
+AC_TYPE_LONG_DOUBLE
+AM_CONDITIONAL(HAVE_LONG_DOUBLE, test x"$ac_cv_type_long_double" = x"yes")
+
+dnl iconv library will be compiled if --enable-newlib-iconv option is enabled
+AM_CONDITIONAL(ENABLE_NEWLIB_ICONV, test x${newlib_iconv} != x)
+
+dnl We have to include these unconditionally since machines might want to use
+dnl AM_CONDITIONAL in their subdirs.
+m4_include([libc/machine/nds32/acinclude.m4])
+m4_include([libc/machine/powerpc/acinclude.m4])
+m4_include([libc/machine/sh/acinclude.m4])
+m4_include([libc/machine/spu/acinclude.m4])
+m4_include([libc/machine/xtensa/acinclude.m4])
+
+m4_foreach_w([MACHINE], [
+  aarch64 amdgcn arc arc64 arm
+  bfin
+  cr16 cris crx csky
+  d10v d30v
+  epiphany
+  fr30 frv ft32
+  h8300 h8500 hppa
+  i386 i960 iq2000
+  lm32
+  m32c m32r m68hc11 m68k m88k mep microblaze mips mn10200 mn10300 moxie msp430 mt
+  nds32 necv70 nios2 nvptx
+  or1k
+  powerpc pru
+  riscv rl78 rx
+  sh sparc spu
+  tic4x tic6x tic80
+  v850 visium
+  w65
+  x86_64 xc16x xstormy16 xtensa
+  z8k
+], [AM_CONDITIONAL([HAVE_LIBC_MACHINE_]m4_toupper(MACHINE), test "${machine_dir}" = MACHINE)])
+
+AM_CONDITIONAL(HAVE_FPMATH_H, test -r "${srcdir}/libc/machine/${machine_dir}/machine/_fpmath.h")
+
+
+AM_CONDITIONAL(MACH_ADD_SETJMP, test "x$mach_add_setjmp" = "xtrue")
diff --git a/toolchain/newlib/port/newlib/libc/sys/Makefile.inc b/toolchain/newlib/port/newlib/libc/sys/Makefile.inc
new file mode 100644
index 00000000..8e785724
--- /dev/null
+++ b/toolchain/newlib/port/newlib/libc/sys/Makefile.inc
@@ -0,0 +1,72 @@
+if HAVE_LIBC_SYS_A29KHIF_DIR
+include %D%/a29khif/Makefile.inc
+endif
+if HAVE_LIBC_SYS_AMDGCN_DIR
+include %D%/amdgcn/Makefile.inc
+endif
+if HAVE_LIBC_SYS_ARM_DIR
+include %D%/arm/Makefile.inc
+endif
+if HAVE_LIBC_SYS_D10V_DIR
+include %D%/d10v/Makefile.inc
+endif
+if HAVE_LIBC_SYS_DAILYRUN_DIR
+include %D%/dailyrun/Makefile.inc
+endif
+if HAVE_LIBC_SYS_EPIPHANY_DIR
+include %D%/epiphany/Makefile.inc
+endif
+if HAVE_LIBC_SYS_H8300HMS_DIR
+include %D%/h8300hms/Makefile.inc
+endif
+if HAVE_LIBC_SYS_H8500HMS_DIR
+include %D%/h8500hms/Makefile.inc
+endif
+if HAVE_LIBC_SYS_M88KBUG_DIR
+include %D%/m88kbug/Makefile.inc
+endif
+if HAVE_LIBC_SYS_MMIXWARE_DIR
+include %D%/mmixware/Makefile.inc
+endif
+if HAVE_LIBC_SYS_NETWARE_DIR
+include %D%/netware/Makefile.inc
+endif
+if HAVE_LIBC_SYS_OR1K_DIR
+include %D%/or1k/Makefile.inc
+endif
+if HAVE_LIBC_SYS_RDOS_DIR
+include %D%/rdos/Makefile.inc
+endif
+if HAVE_LIBC_SYS_RTEMS_DIR
+include %D%/rtems/Makefile.inc
+endif
+if HAVE_LIBC_SYS_SH_DIR
+include %D%/sh/Makefile.inc
+endif
+if HAVE_LIBC_SYS_SYSMEC_DIR
+include %D%/sysmec/Makefile.inc
+endif
+if HAVE_LIBC_SYS_SYSNEC810_DIR
+include %D%/sysnec810/Makefile.inc
+endif
+if HAVE_LIBC_SYS_SYSNECV850_DIR
+include %D%/sysnecv850/Makefile.inc
+endif
+if HAVE_LIBC_SYS_SYSVI386_DIR
+include %D%/sysvi386/Makefile.inc
+endif
+if HAVE_LIBC_SYS_SYSVNECV70_DIR
+include %D%/sysvnecv70/Makefile.inc
+endif
+if HAVE_LIBC_SYS_TIC80_DIR
+include %D%/tic80/Makefile.inc
+endif
+if HAVE_LIBC_SYS_TIRTOS_DIR
+include %D%/tirtos/Makefile.inc
+endif
+if HAVE_LIBC_SYS_W65_DIR
+include %D%/w65/Makefile.inc
+endif
+if HAVE_LIBC_SYS_Z8KSIM_DIR
+include %D%/z8ksim/Makefile.inc
+endif
diff --git a/toolchain/newlib/port/newlib/libc/sys/dailyrun/Makefile.inc b/toolchain/newlib/port/newlib/libc/sys/dailyrun/Makefile.inc
new file mode 100644
index 00000000..ec439726
--- /dev/null
+++ b/toolchain/newlib/port/newlib/libc/sys/dailyrun/Makefile.inc
@@ -0,0 +1 @@
+libc_a_SOURCES += %D%/syscalls.c
diff --git a/toolchain/newlib/port/newlib/libc/sys/dailyrun/crt0.c b/toolchain/newlib/port/newlib/libc/sys/dailyrun/crt0.c
new file mode 100644
index 00000000..4cac83b5
--- /dev/null
+++ b/toolchain/newlib/port/newlib/libc/sys/dailyrun/crt0.c
@@ -0,0 +1,20 @@
+#include <unistd.h>
+
+extern int main(int argc, char **argv);
+
+extern char _edata;
+extern char _end;
+
+void _start(void)
+{
+    char *bss;
+    int ret;
+
+    /* Fill bss with zeros */
+    bss = &_edata + 1;
+    while (bss < &_end)
+        *bss++ = 0;
+
+    ret = main(0, NULL);
+    _exit(ret);
+}
diff --git a/toolchain/newlib/port/newlib/libc/sys/dailyrun/syscalls.c b/toolchain/newlib/port/newlib/libc/sys/dailyrun/syscalls.c
new file mode 100644
index 00000000..47c3220b
--- /dev/null
+++ b/toolchain/newlib/port/newlib/libc/sys/dailyrun/syscalls.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <sys/errno.h>
+#include <sys/fcntl.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <sys/types.h>
+
+char **environ; /* pointer to array of char * strings that define the current
+                   environment variables */
+
+void _exit(int val);
+int close(int file);
+int execve(char *name, char **argv, char **env);
+int fork(void);
+int fstat(int file, struct stat *st);
+int getpid();
+int isatty(int file);
+int kill(int pid, int sig);
+int link(char *old, char *new);
+int lseek(int file, int ptr, int dir);
+int open(const char *name, int flags, ...);
+int read(int file, char *ptr, int len);
+caddr_t sbrk(int incr);
+int stat(const char *file, struct stat *st);
+clock_t times(struct tms *buf);
+int unlink(char *name);
+int wait(int *status);
+int write(int file, char *ptr, int len);
+int gettimeofday(struct timeval *p, void *z);