--- a/config.sub
+++ b/config.sub
@@ -1749,6 +1749,9 @@
 	-dicos*)
 		os=-dicos
 		;;
+	-adros*)
+		os=-adros
+		;;
 	-nacl*)
 		;;
 	-ios)
--- a/newlib/configure.host
+++ b/newlib/configure.host
@@ -243,6 +243,10 @@
   i[3-7]86-*-rdos*)
 	sys_dir=rdos
 	;;
+  i[3-7]86-*-adros*)
+	sys_dir=adros
+	newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED -DHAVE_OPENDIR -DHAVE_SYSTEM -DMALLOC_PROVIDED"
+	;;
   i[3-7]86-*-netware*)
 	;;
   m68k-*-netware*)
--- a/newlib/libc/include/sys/config.h
+++ b/newlib/libc/include/sys/config.h
@@ -28,6 +28,14 @@
 #define __DYNAMIC_REENT__
 #endif
 
+/* AdrOS target configuration */
+#ifdef __adros__
+#define _READ_WRITE_RETURN_TYPE int
+#define __DYNAMIC_REENT__
+#define HAVE_SYSTEM
+#define HAVE_OPENDIR
+#endif
+
 /* RTEMS uses Newlib reentrancy, not dynamic */
 #ifdef __rtems__
 #define __DYNAMIC_REENT__
--- /dev/null
+++ b/newlib/libc/sys/adros/Makefile.am
@@ -0,0 +1,10 @@
+## AdrOS system directory — empty (syscalls are in libgloss/adros)
+AUTOMAKE_OPTIONS = cygnus
+INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
+AM_CCASFLAGS = $(INCLUDES)
+
+noinst_LIBRARIES = lib.a
+lib_a_SOURCES =
+lib_a_CCASFLAGS = $(AM_CCASFLAGS)
+
+ACLOCAL_AMFLAGS = -I ../../..
--- /dev/null
+++ b/newlib/libc/sys/adros/configure.in
@@ -0,0 +1,8 @@
+AC_PREREQ(2.59)
+AC_INIT([newlib],[NEWLIB_VERSION])
+AC_CONFIG_SRCDIR([Makefile.am])
+AC_CANONICAL_SYSTEM
+AM_INIT_AUTOMAKE([cygnus])
+AM_MAINTAINER_MODE
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
--- a/libgloss/configure.in
+++ b/libgloss/configure.in
@@ -100,6 +100,9 @@
   i[3-7]86-*-elf* | i[3-7]86-*-coff*)
 	AC_CONFIG_SUBDIRS([i386])
 	;;
+  i[3-7]86-*-adros*)
+	AC_CONFIG_SUBDIRS([adros])
+	;;
   m32r-*-*)
 	AC_CONFIG_SUBDIRS([m32r])
 	;;
--- /dev/null
+++ b/libgloss/adros/configure.in
@@ -0,0 +1,21 @@
+dnl AdrOS libgloss configure
+AC_PREREQ(2.59)
+AC_INIT([libgloss-adros],[0.1])
+AC_CANONICAL_SYSTEM
+AM_INIT_AUTOMAKE([cygnus])
+AM_MAINTAINER_MODE
+
+AC_PROG_CC
+AC_PROG_AS
+AC_PROG_AR
+AC_PROG_RANLIB
+AM_PROG_AS
+
+host_makefile_frag=${srcdir}/../config/default.mh
+AC_SUBST(host_makefile_frag)
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
--- /dev/null
+++ b/libgloss/adros/Makefile.in
@@ -0,0 +1,44 @@
+# Makefile for AdrOS libgloss (autotools-generated template)
+
+srcdir = @srcdir@
+VPATH = @srcdir@
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+tooldir = $(exec_prefix)/$(target_alias)
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+
+CC = @CC@
+AS = @AS@
+AR = @AR@
+RANLIB = @RANLIB@
+
+CFLAGS = -g
+
+BSP = libadros.a
+OBJS = syscalls.o
+CRT0 = crt0.o
+
+all: $(CRT0) $(BSP)
+
+$(BSP): $(OBJS)
+	$(AR) rcs $@ $^
+	$(RANLIB) $@
+
+crt0.o: crt0.S
+	$(CC) $(CFLAGS) -c $< -o $@
+
+syscalls.o: syscalls.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+install: all
+	$(INSTALL_DATA) $(CRT0) $(tooldir)/lib/$(CRT0)
+	$(INSTALL_DATA) $(BSP) $(tooldir)/lib/$(BSP)
+
+clean:
+	rm -f $(OBJS) $(CRT0) $(BSP)
+
+.PHONY: all install clean