sb/track: Add a command to track build sets.

- Process a build set for a range of hosts and output a dependency
  tree, the used build set and configuration files.
- Output the configuration files that are no referenced

Closes #4036

11 files changed, 1068 insertions, 603 deletions

diff --git a/bare/config/devel/libusb-1.0.18-1.cfg b/bare/config/devel/libusb-1.0.18-1.cfg
index b47855b..494afbe 100644
--- a/bare/config/devel/libusb-1.0.18-1.cfg
+++ b/bare/config/devel/libusb-1.0.18-1.cfg
@@ -15,6 +15,9 @@ Name: libusb-%{libusb_version}-%{_host}-%{release}
 %description
 LibUSB for host %{_host}.
 
+%hash sha512 libusb-%{libusb_version}.tar.bz2 \
+       u8PXXLkfTmoCRUnCusOO6FrtqFKaRVP9NryOilwiPNieuVLtpx/MAHHWxsgYoGMdTMoIT+1p1Jhu7l3PmofWYg==
+
 #
 # The Libuxb build instructions. We use 1.xx Release 1.
 #
diff --git a/source-builder/config/autoconf-2-1.cfg b/source-builder/config/autoconf-2-1.cfg
index 86f5d1e..2b9466c 100644
--- a/source-builder/config/autoconf-2-1.cfg
+++ b/source-builder/config/autoconf-2-1.cfg
@@ -6,9 +6,9 @@
 
 %ifn %{defined _internal_autotools}
   %define _internal_autotools no
-  %ifn %{defined _internal_autotools_path}
-    %define _internal_autotools_path %{nil}
-  %endif
+%endif
+%ifn %{defined _internal_autotools_path}
+  %define _internal_autotools_path %{_prefix}
 %endif
 
 Name:      autoconf-%{autoconf_version}-%{_host}-%{release}
diff --git a/source-builder/config/automake-1-1.cfg b/source-builder/config/automake-1-1.cfg
index 48beb51..83473de 100644
--- a/source-builder/config/automake-1-1.cfg
+++ b/source-builder/config/automake-1-1.cfg
@@ -6,9 +6,9 @@
 
 %ifn %{defined _internal_autotools}
   %define _internal_autotools no
-  %ifn %{defined _internal_autotools_path}
-    %define _internal_autotools_path %{nil}
-  %endif
+%endif
+%ifn %{defined _internal_autotools_path}
+  %define _internal_autotools_path %{_prefix}
 %endif
 
 Name:      automake-%{automake_version}-%{_host}-%{release}
diff --git a/source-builder/config/libusb-1-1.cfg b/source-builder/config/libusb-1-1.cfg
index 4b250a3..803f326 100644
--- a/source-builder/config/libusb-1-1.cfg
+++ b/source-builder/config/libusb-1-1.cfg
@@ -33,8 +33,10 @@ URL: 	   http://libusb.org/
   cd libusb-%{libusb_version}
 
 %if "%{_build}" != "%{_host}"
-  CFLAGS_FOR_BUILD="-g -O2 -Wall" \
+  LIBUSB_CFLAGS_FOR_BUILD="-g -O2 -Wall"
 %endif
+
+  CFLAGS_FOR_BUILD=${LIBUSB_CFLAGS_FOR_BUILD} \
   CFLAGS="$SB_CFLAGS" \
   ./configure \
     --build=%{_build} --host=%{_host} \
diff --git a/source-builder/sb-track b/source-builder/sb-track
new file mode 100755
index 0000000..a739978
--- /dev/null
+++ b/source-builder/sb-track
@@ -0,0 +1,27 @@
+#! /bin/sh
+#
+# RTEMS Tools Project (http://www.rtems.org/)
+# Copyright 2019 Chris Johns (chrisj@rtems.org)
+# All rights reserved.
+#
+# This file is part of the RTEMS Tools package in 'rtems-tools'.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+set -e
+base=$(dirname $0)
+PYTHON_CMD=${base}/sb/cmd-track.py
+if test -f ${base}/sb/python-wrapper.sh; then
+  . ${base}/sb/python-wrapper.sh
+fi
+echo "error: python wrapper not found"
diff --git a/source-builder/sb/build.py b/source-builder/sb/build.py
index ceb179a..cfb7d8c 100644
--- a/source-builder/sb/build.py
+++ b/source-builder/sb/build.py
@@ -635,6 +635,10 @@ class build:
             return 0
         return package.get_size('installed')
 
+    def includes(self):
+        if self.config:
+            return self.config.includes()
+
 def get_configs(opts):
 
     def _scan(_path, ext):
@@ -648,10 +652,17 @@ def get_configs(opts):
         return configs
 
     configs = { 'paths': [], 'files': [] }
-    for cp in opts.defaults.expand('%{_configdir}').split(':'):
+    paths = opts.defaults.expand('%{_configdir}').split(':')
+    root = path.host(os.path.commonprefix(paths))
+    configs['root'] = root
+    configs['localpaths'] = [lp[len(root):] for lp in paths]
+    for cp in paths:
         hcp = path.host(path.abspath(cp))
         configs['paths'] += [hcp]
-        configs['files'] += _scan(hcp, ['.cfg', '.bset'])
+        hpconfigs = sorted(set(_scan(hcp, ['.cfg', '.bset'])))
+        hcplocal = hcp[len(root):]
+        configs[hcplocal] = [path.join(hcplocal, c) for c in hpconfigs]
+        configs['files'] += hpconfigs
     configs['files'] = sorted(set(configs['files']))
     return configs
 
diff --git a/source-builder/sb/cmd-track.py b/source-builder/sb/cmd-track.py
new file mode 100755
index 0000000..82615a5
--- /dev/null
+++ b/source-builder/sb/cmd-track.py
@@ -0,0 +1,29 @@
+#
+# RTEMS Tools Project (http://www.rtems.org/)
+# Copyright 2010-2019 Chris Johns (chrisj@rtems.org)
+# All rights reserved.
+#
+# This file is part of the RTEMS Tools package in 'rtems-tools'.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+from __future__ import print_function
+
+import sys, os
+
+try:
+    import track
+    track.run()
+except ImportError:
+    print("Incorrect Source Builder installation", file = sys.stderr)
+    sys.exit(1)
diff --git a/source-builder/sb/config.py b/source-builder/sb/config.py
index afcac84..f8854a5 100644
--- a/source-builder/sb/config.py
+++ b/source-builder/sb/config.py
@@ -283,6 +283,7 @@ class file:
         return s
 
     def _reset(self, name):
+        self.parent = 'root'
         self.name = name
         self.load_depth = 0
         self.configpath = []
@@ -430,7 +431,8 @@ class file:
             if len(shell_macro) > 3:
                 e = execute.capture_execution()
                 if options.host_windows:
-                    shell_cmd = ''.join([c if c != '"' else '\\' + c for c in shell_macro[2:-1]])
+                    shell_cmd = \
+                        ''.join([c if c != '"' else '\\' + c for c in shell_macro[2:-1]])
                     cmd = '%s -c "%s"' % (self.macros.expand('%{__sh}'), shell_cmd)
                 else:
                     cmd = shell_macro[2:-1]
@@ -458,7 +460,8 @@ class file:
                         if braces > 0:
                             braces -= 1
                         else:
-                            shell_cmd = '%(' + self._shell(line[pos + 2:p], nesting + 1) + ')'
+                            shell_cmd = '%(' + \
+                                self._shell(line[pos + 2:p], nesting + 1) + ')'
                             line = line[:pos] + _exec(shell_cmd) + line[p + 1:]
                             updating = True
                             break
@@ -472,9 +475,10 @@ class file:
            ('with_download' in self.macros and self.macros['with_download'] == '1'):
             return '0'
         ok = False
-        log.trace('pkgconfig: check: crossc=%d pkg_crossc=%d prefix=%s' % ( self._cross_compile(),
-                                                                            self.pkgconfig_crosscompile,
-                                                                            self.pkgconfig_prefix))
+        log.trace('pkgconfig: check: crossc=%d pkg_crossc=%d prefix=%s'
+                  % ( self._cross_compile(),
+                      self.pkgconfig_crosscompile,
+                      self.pkgconfig_prefix))
         log.trace('pkgconfig: check: test=%s' % (test))
         if type(test) == str:
             test = test.split()
@@ -594,7 +598,8 @@ class file:
                 elif m.startswith('%{expand'):
                     colon = m.find(':')
                     if colon < 8:
-                        log.warning(self._name_line_msg('malformed expand macro, no colon found'))
+                        log.warning(self._name_line_msg('malformed expand macro, ' \
+                                                        'no colon found'))
                     else:
                         e = self._expand(m[colon + 1:-1].strip())
                         s = s.replace(m, self._label(e))
@@ -861,7 +866,8 @@ class file:
                             dir, info, data = self._process_directive(r, dir, info, data)
                     else:
                         if in_dir != dir:
-                            self._error('directives cannot change scope across if statements')
+                            self._error('directives cannot change' \
+                                        ' scope across if statements')
 
                     return data
                 if r[1] == '%else':
@@ -904,22 +910,25 @@ class file:
                 elif cls[0] == '&&':
                     join_op = 'and'
                 cls = cls[1:]
-                log.trace('config: %s: %3d:  _if[%i]: joining: %s' % (self.name, self.lc,
-                                                                      self.if_depth,
-                                                                      join_op))
+                log.trace('config: %s: %3d:  _if[%i]: joining: %s' % \
+                          (self.name, self.lc,
+                           self.if_depth,
+                           join_op))
             ori = 0
             andi = 0
             i = len(cls)
             if '||' in cls:
                 ori = cls.index('||')
-                log.trace('config: %s: %3d:  _if[%i}: OR found at %i' % (self.name, self.lc,
-                                                                         self.if_depth,
-                                                                         ori))
+                log.trace('config: %s: %3d:  _if[%i}: OR found at %i' % \
+                          (self.name, self.lc,
+                           self.if_depth,
+                           ori))
             if '&&' in cls:
                 andi = cls.index('&&')
-                log.trace('config: %s: %3d:  _if[%i]: AND found at %i' % (self.name, self.lc,
-                                                                          self.if_depth,
-                                                                          andi))
+                log.trace('config: %s: %3d:  _if[%i]: AND found at %i' % \
+                          (self.name, self.lc,
+                           self.if_depth,
+                           andi))
             if ori > 0 or andi > 0:
                 if ori == 0:
                     i = andi
@@ -929,9 +938,10 @@ class file:
                     i = andi
                 else:
                     i = andi
-                log.trace('config: %s: %3d:  _if[%i]: next OP found at %i' % (self.name, self.lc,
-                                                                              self.if_depth,
-                                                                              i))
+                log.trace('config: %s: %3d:  _if[%i]: next OP found at %i' % \
+                          (self.name, self.lc,
+                           self.if_depth,
+                           i))
             ls = cls[:i]
             if len(ls) == 0:
                 self._error('invalid if expression: ' + reduce(add, sls, ''))
@@ -1226,7 +1236,8 @@ class file:
                                 log.trace('config: %s: %3d:  _parse: directive: %s' % \
                                           (self.name, self.lc, ls[0].strip()))
                                 return ('directive', ls[0].strip(), ls[1:])
-                        log.warning(self._name_line_msg("unknown directive: '" + ls[0] + "'"))
+                        log.warning(self._name_line_msg("unknown directive: '" + \
+                                                        ls[0] + "'"))
                         return ('data', [lo])
             else:
                 return ('data', [lo])
@@ -1247,7 +1258,8 @@ class file:
                 _package = results[2][0]
             else:
                 if results[2][0].strip() != '-n':
-                    log.warning(self._name_line_msg("unknown directive option: '%s'" % (' '.join(results[2]))))
+                    log.warning(self._name_line_msg("unknown directive option: '%s'" % \
+                                                    (' '.join(results[2]))))
                 _package = results[2][1].strip()
             self._set_package(_package)
         if directive and directive != results[1]:
@@ -1257,7 +1269,8 @@ class file:
         return (directive, info, data)
 
     def _process_data(self, results, directive, info, data):
-        log.trace('config: %s: %3d:  _process_data: result=#%r# directive=#%s# info=#%r# data=#%r#' % \
+        log.trace('config: %s: %3d:  _process_data: result=#%r# ' \
+                  'directive=#%s# info=#%r# data=#%r#' % \
                   (self.name, self.lc, results, directive, info, data))
         new_data = []
         for l in results[1]:
@@ -1284,10 +1297,12 @@ class file:
                 if info is not None:
                     self._info_append(info, info_data)
                 else:
-                    log.warning(self._name_line_msg("invalid format: '%s'" % (info_data[:-1])))
+                    log.warning(self._name_line_msg("invalid format: '%s'" % \
+                                                    (info_data[:-1])))
             else:
                 l = self._expand(l)
-                log.trace('config: %s: %3d:  _data: %s %s' % (self.name, self.lc, l, new_data))
+                log.trace('config: %s: %3d:  _data: %s %s' % \
+                          (self.name, self.lc, l, new_data))
                 new_data.append(l)
         return (directive, info, data + new_data)
 
@@ -1303,7 +1318,8 @@ class file:
         self.package = _package
 
     def _directive_extend(self, dir, data):
-        log.trace('config: %s: %3d:  _directive_extend: %s: %r' % (self.name, self.lc, dir, data))
+        log.trace('config: %s: %3d:  _directive_extend: %s: %r' % \
+                  (self.name, self.lc, dir, data))
         self._packages[self.package].directive_extend(dir, data)
 
     def _info_append(self, info, data):
@@ -1328,7 +1344,6 @@ class file:
             return end
 
         if self.load_depth == 0:
-            self._reset(name)
             self._packages[self.package] = package(self.package,
                                                    self.define('%{_arch}'),
                                                    self)
@@ -1336,6 +1351,7 @@ class file:
         self.load_depth += 1
 
         save_name = self.name
+        save_parent = self.parent
         save_lc = self.lc
 
         #
@@ -1382,7 +1398,9 @@ class file:
             raise error.general('error opening config file: %s' % (path.host(configname)))
 
         self.configpath += [configname]
-        self._includes += [configname]
+
+        self._includes += [configname + ':' + self.parent]
+        self.parent = configname
 
         self.name = self._relative_path(configname)
         self.lc = 0
@@ -1413,13 +1431,12 @@ class file:
         except:
             config.close()
             raise
-
-        config.close()
-
-        self.name = save_name
-        self.lc = save_lc
-
-        self.load_depth -= 1
+        finally:
+            config.close()
+            self.name = save_name
+            self.parent = save_parent
+            self.lc = save_lc
+            self.load_depth -= 1
 
     def defined(self, name):
         return name in self.macros
@@ -1456,7 +1473,7 @@ class file:
             raise error.general('package "' + _package + '" not found')
         if name not in self._packages[_package].directives:
             raise error.general('directive "' + name + \
-                                    '" not found in package "' + _package + '"')
+                                '" not found in package "' + _package + '"')
         return self._packages[_package].directives[name]
 
     def abspath(self, rpath):
diff --git a/source-builder/sb/getsources.py b/source-builder/sb/getsources.py
index 523a3a5..7d76038 100644
--- a/source-builder/sb/getsources.py
+++ b/source-builder/sb/getsources.py
@@ -32,13 +32,9 @@ import sys
 
 try:
     import build
-    import check
     import error
-    import git
     import log
-    import macros
-    import path
-    import sources
+    import simhost
     import version
 except KeyboardInterrupt:
     print('abort: user terminated', file = sys.stderr)
@@ -47,548 +43,6 @@ except:
     print('error: unknown application load error', file = sys.stderr)
     sys.exit(1)
 
-#
-# Define host profiles so it can simulated on another host.
-#
-host_profiles = {
-    'darwin':  { '_os':              ('none',    'none',     'darwin'),
-                 '_host':            ('triplet', 'required', 'x86_64-apple-darwin18.5.0'),
-                 '_host_vendor':     ('none',    'none',     'apple'),
-                 '_host_os':         ('none',    'none',     'darwin'),
-                 '_host_os_version': ('none',    'none',     '18.5.0'),
-                 '_host_cpu':        ('none',    'none',     'x86_64'),
-                 '_host_alias':      ('none',    'none',     '%{nil}'),
-                 '_host_arch':       ('none',    'none',     'x86_64'),
-                 '_usr':             ('dir',     'optional', '/usr/local'),
-                 '_var':             ('dir',     'optional', '/usr/local/var') },
-    'freebsd': { '_os':              ('none',    'none',     'freebsd'),
-                 '_host':            ('triplet', 'required', 'x86_64-freebsd12.0-RELEASE-p3'),
-                 '_host_vendor':     ('none',    'none',     'pc'),
-                 '_host_os':         ('none',    'none',     'freebsd'),
-                 '_host_os_version': ('none',    'none',     '12.0-RELEASE-p3'),
-                 '_host_cpu':        ('none',    'none',     'x86_64'),
-                 '_host_alias':      ('none',    'none',     '%{nil}'),
-                 '_host_arch':       ('none',    'none',     'x86_64'),
-                 '_usr':             ('dir',     'optional', '/usr/local'),
-                 '_var':             ('dir',     'optional', '/usr/local/var') },
-    'linux':   { '_os':              ('none',    'none',     'linux'),
-                 '_host':            ('triplet', 'required', 'x86_64-linux-gnu'),
-                 '_host_vendor':     ('none',    'none',     'gnu'),
-                 '_host_os':         ('none',    'none',     'linux'),
-                 '_host_os_version': ('none',    'none',     '4.18.0-16'),
-                 '_host_cpu':        ('none',    'none',     'x86_64'),
-                 '_host_alias':      ('none',    'none',     '%{nil}'),
-                 '_host_arch':       ('none',    'none',     'x86_64'),
-                 '_usr':             ('dir',     'optional', '/usr/local'),
-                 '_var':             ('dir',     'optional', '/usr/local/var') },
-    'netbsd':  { '_os':              ('none',    'none',     'netbsd'),
-                 '_host':            ('triplet', 'required', 'x86_64-netbsd8.0'),
-                 '_host_vendor':     ('none',    'none',     'pc'),
-                 '_host_os':         ('none',    'none',     'netbsd'),
-                 '_host_os_version': ('none',    'none',     '8.0'),
-                 '_host_cpu':        ('none',    'none',     'x86_64'),
-                 '_host_alias':      ('none',    'none',     '%{nil}'),
-                 '_host_arch':       ('none',    'none',     'x86_64'),
-                 '_usr':             ('dir',     'optional', '/usr/local'),
-                 '_var':             ('dir',     'optional', '/usr/local/var') },
-    'solaris': { '_os':              ('none',    'none',     'solaris'),
-                 '_host':            ('triplet', 'required', 'x86_64-pc-solaris2'),
-                 '_host_vendor':     ('none',    'none',     'pc'),
-                 '_host_os':         ('none',    'none',     'solaris'),
-                 '_host_os_version': ('none',    'none',     '2'),
-                 '_host_cpu':        ('none',    'none',     'x86_64'),
-                 '_host_alias':      ('none',    'none',     '%{nil}'),
-                 '_host_arch':       ('none',    'none',     'x86_64'),
-                 '_usr':             ('dir',     'optional', '/usr/local'),
-                 '_var':             ('dir',     'optional', '/usr/local/var') },
-    'win32':   { '_os':              ('none',    'none',     'win32'),
-                 '_windows_os':      ('none',    'none',     'mingw32'),
-                 '_host':            ('triplet', 'required', 'x86_64-w64-mingw32'),
-                 '_host_vendor':     ('none',    'none',     'pc'),
-                 '_host_os':         ('none',    'none',     'win32'),
-                 '_host_os_version': ('none',    'none',     '10'),
-                 '_host_cpu':        ('none',    'none',     'x86_64'),
-                 '_host_alias':      ('none',    'none',     '%{nil}'),
-                 '_host_arch':       ('none',    'none',     'x86_64'),
-                 '_usr':             ('dir',     'optional', '/usr/local'),
-                 '_var':             ('dir',     'optional', '/usr/local/var') },
-    'cygwin':  { '_os':              ('none',    'none',     'win32'),
-                 '_windows_os':      ('none',    'none',     'cygwin'),
-                 '_host':            ('triplet', 'required', 'x86_64-w64-cygwin'),
-                 '_host_vendor':     ('none',    'none',     'microsoft'),
-                 '_host_os':         ('none',    'none',     'win32'),
-                 '_host_os_version': ('none',    'none',     '10'),
-                 '_host_cpu':        ('none',    'none',     'x86_64'),
-                 '_host_alias':      ('none',    'none',     '%{nil}'),
-                 '_host_arch':       ('none',    'none',     'x86_64'),
-                 '_usr':             ('dir',     'optional', '/usr/local'),
-                 '_var':             ('dir',     'optional', '/usr/local/var') },
-}
-
-class log_capture(object):
-    def __init__(self):
-        self.log = []
-        log.capture = self.capture
-
-    def __str__(self):
-        return os.linesep.join(self.log)
-
-    def capture(self, text):
-        self.log += [l for l in text.replace(chr(13), '').splitlines()]
-
-    def get(self):
-        return self.log
-
-    def clear(self):
-        self.log = []
-
-#
-# A skinny options command line class to get the configs to load.
-#
-class options(object):
-    def __init__(self, argv, argopts, defaults):
-        command_path = path.dirname(path.abspath(argv[1]))
-        if len(command_path) == 0:
-            command_path = '.'
-        self.command_path = command_path
-        self.command_name = path.basename(argv[0])
-        extras = ['--dry-run',
-                  '--with-download',
-                  '--quiet',
-                  '--without-log',
-                  '--without-error-report',
-                  '--without-release-url']
-        self.argv = argv
-        self.args = argv[1:] + extras
-        self.defaults = macros.macros(name = defaults,
-                                      sbdir = command_path)
-        self.load_overrides()
-        self.opts = { 'params' :  extras }
-        self.sb_git()
-        self.rtems_bsp()
-        if argopts.download_dir is not None:
-            self.defaults['_sourcedir'] = ('dir',
-                                           'optional',
-                                           path.abspath(argopts.download_dir))
-            self.defaults['_patchdir'] = ('dir',
-                                          'optional',
-                                          path.abspath(argopts.download_dir))
-
-    def load_overrides(self):
-        overrides = None
-        if os.name == 'nt':
-            try:
-                import windows
-                overrides = windows.load()
-                host_windows = True
-                host_posix = False
-            except:
-                raise error.general('failed to load Windows host support')
-        elif os.name == 'posix':
-            uname = os.uname()
-            try:
-                if uname[0].startswith('MINGW64_NT'):
-                    import windows
-                    overrides = windows.load()
-                    host_windows = True
-                elif uname[0].startswith('CYGWIN_NT'):
-                    import windows
-                    overrides = windows.load()
-                elif uname[0] == 'Darwin':
-                    import darwin
-                    overrides = darwin.load()
-                elif uname[0] == 'FreeBSD':
-                    import freebsd
-                    overrides = freebsd.load()
-                elif uname[0] == 'NetBSD':
-                    import netbsd
-                    overrides = netbsd.load()
-                elif uname[0] == 'Linux':
-                    import linux
-                    overrides = linux.load()
-                elif uname[0] == 'SunOS':
-                    import solaris
-                    overrides = solaris.load()
-            except error.general as ge:
-                raise error.general('failed to load %s host support: %s' % (uname[0], ge))
-            except:
-                raise error.general('failed to load %s host support' % (uname[0]))
-        else:
-            raise error.general('unsupported host type; please add')
-        if overrides is None:
-            raise error.general('no hosts defaults found; please add')
-        for k in overrides:
-            self.defaults[k] = overrides[k]
-
-    def parse_args(self, arg, error = True, extra = True):
-        for a in range(0, len(self.args)):
-            if self.args[a].startswith(arg):
-                lhs = None
-                rhs = None
-                if '=' in self.args[a]:
-                    eqs = self.args[a].split('=')
-                    lhs = eqs[0]
-                    if len(eqs) > 2:
-                        rhs = '='.join(eqs[1:])
-                    else:
-                        rhs = eqs[1]
-                elif extra:
-                    lhs = self.args[a]
-                    a += 1
-                    if a < len(self.args):
-                        rhs = self.args[a]
-                return [lhs, rhs]
-            a += 1
-        return None
-
-    def rtems_bsp(self):
-        self.defaults['rtems_version'] = str(version.version())
-        self.defaults['_target'] = 'arch-rtems'
-        self.defaults['rtems_host'] = 'rtems-arch'
-        self.defaults['with_rtems_bsp'] = 'rtems-bsp'
-
-    def sb_git(self):
-        repo = git.repo(self.defaults.expand('%{_sbdir}'), self)
-        repo_mail = None
-        if repo.valid():
-            repo_valid = '1'
-            repo_head = repo.head()
-            repo_clean = not repo.dirty()
-            repo_remotes = '%{nil}'
-            remotes = repo.remotes()
-            if 'origin' in remotes:
-                repo_remotes = '%s/origin' % (remotes['origin']['url'])
-                repo_id = repo_head
-            if not repo_clean:
-                repo_id += '-modified'
-                repo_mail = repo.email()
-        else:
-            repo_valid = '0'
-            repo_head = '%{nil}'
-            repo_clean = '%{nil}'
-            repo_remotes = '%{nil}'
-            repo_id = 'no-repo'
-        self.defaults['_sbgit_valid'] = repo_valid
-        self.defaults['_sbgit_head']  = repo_head
-        self.defaults['_sbgit_clean'] = str(repo_clean)
-        self.defaults['_sbgit_remotes'] = str(repo_remotes)
-        self.defaults['_sbgit_id']    = repo_id
-        if repo_mail is not None:
-            self.defaults['_sbgit_mail'] = repo_mail
-
-    def get_arg(self, arg):
-        if self.optargs is None or arg not in self.optargs:
-            return None
-        return self.parse_args(arg)
-
-    def with_arg(self, label, default = 'not-found'):
-        # the default if there is no option for without.
-        result = default
-        for pre in ['with', 'without']:
-            arg_str = '--%s-%s' % (pre, label)
-            arg_label = '%s_%s' % (pre, label)
-            arg = self.parse_args(arg_str, error = False, extra = False)
-            if arg is not None:
-                if arg[1] is  None:
-                    result = 'yes'
-                else:
-                    result = arg[1]
-                break
-        return [arg_label, result]
-
-    def dry_run(self):
-        return True
-
-    def keep_going(self):
-        return False
-
-    def quiet(self):
-            return True
-
-    def no_clean(self):
-        return True
-
-    def always_clean(self):
-        return False
-
-    def no_install(self):
-        return True
-
-    def download_disabled(self):
-        return False
-
-    def disable_install(self):
-        return True
-
-    def urls(self):
-        return None
-
-    def info(self):
-        s = ' Command Line: %s%s' % (' '.join(self.argv), os.linesep)
-        s += ' Python: %s' % (sys.version.replace('\n', ''))
-        return s
-
-class buildset:
-    """Build a set builds a set of packages."""
-
-    def __init__(self, bset, _configs, opts, macros = None):
-        log.trace('_bset: %s: init' % (bset))
-        self.configs = _configs
-        self.opts = opts
-        if macros is None:
-            self.macros = copy.copy(opts.defaults)
-        else:
-            self.macros = copy.copy(macros)
-        self.macros.define('_rsb_getting_source')
-        log.trace('_bset: %s: macro defaults' % (bset))
-        log.trace(str(self.macros))
-        self.bset = bset
-        _target = self.macros.expand('%{_target}')
-        if len(_target):
-            pkg_prefix = _target
-        else:
-            pkg_prefix = self.macros.expand('%{_host}')
-        self.bset_pkg = '%s-%s-set' % (pkg_prefix, self.bset)
-        self.build_failure = None
-
-    def build_package(self, _config, _build):
-        if not _build.disabled():
-            _build.make()
-
-    def parse(self, bset):
-
-        #
-        # Ouch, this is a copy of the setbuilder.py code.
-        #
-
-        def _clean(line):
-            line = line[0:-1]
-            b = line.find('#')
-            if b >= 0:
-                line = line[1:b]
-            return line.strip()
-
-        bsetname = bset
-
-        if not path.exists(bsetname):
-            for cp in self.macros.expand('%{_configdir}').split(':'):
-                configdir = path.abspath(cp)
-                bsetname = path.join(configdir, bset)
-                if path.exists(bsetname):
-                    break
-                bsetname = None
-            if bsetname is None:
-                raise error.general('no build set file found: %s' % (bset))
-        try:
-            log.trace('_bset: %s: open: %s' % (self.bset, bsetname))
-            bset = open(path.host(bsetname), 'r')
-        except IOError as err:
-            raise error.general('error opening bset file: %s' % (bsetname))
-
-        configs = []
-
-        try:
-            lc = 0
-            for l in bset:
-                lc += 1
-                l = _clean(l)
-                if len(l) == 0:
-                    continue
-                log.trace('_bset: %s: %03d: %s' % (self.bset, lc, l))
-                ls = l.split()
-                if ls[0][-1] == ':' and ls[0][:-1] == 'package':
-                    self.bset_pkg = ls[1].strip()
-                    self.macros['package'] = self.bset_pkg
-                elif ls[0][0] == '%':
-                    def err(msg):
-                        raise error.general('%s:%d: %s' % (self.bset, lc, msg))
-                    if ls[0] == '%define':
-                        if len(ls) > 2:
-                            self.macros.define(ls[1].strip(),
-                                               ' '.join([f.strip() for f in ls[2:]]))
-                        else:
-                            self.macros.define(ls[1].strip())
-                    elif ls[0] == '%undefine':
-                        if len(ls) > 2:
-                            raise error.general('%s:%d: %undefine requires just the name' % \
-                                                    (self.bset, lc))
-                        self.macros.undefine(ls[1].strip())
-                    elif ls[0] == '%include':
-                        configs += self.parse(ls[1].strip())
-                    elif ls[0] in ['%patch', '%source']:
-                        sources.process(ls[0][1:], ls[1:], self.macros, err)
-                    elif ls[0] == '%hash':
-                        sources.hash(ls[1:], self.macros, err)
-                else:
-                    l = l.strip()
-                    c = build.find_config(l, self.configs)
-                    if c is None:
-                        raise error.general('%s:%d: cannot find file: %s' % (self.bset, lc, l))
-                    configs += [c]
-        except:
-            bset.close()
-            raise
-
-        bset.close()
-
-        return configs
-
-    def load(self):
-        #
-        # If the build set file ends with .cfg the user has passed to the
-        # buildset builder a configuration so we just return it.
-        #
-        if self.bset.endswith('.cfg'):
-            configs = [self.bset]
-        else:
-            exbset = self.macros.expand(self.bset)
-            self.macros['_bset'] = exbset
-            self.macros['_bset_tmp'] = build.short_name(exbset)
-            root, ext = path.splitext(exbset)
-            if exbset.endswith('.bset'):
-                bset = exbset
-            else:
-                bset = '%s.bset' % (exbset)
-            configs = self.parse(bset)
-        return configs
-
-    def set_host_details(self, host, opts, macros):
-        if host not in host_profiles:
-            raise error.general('invalid host: ' + host)
-        for m in host_profiles[host]:
-            opts.defaults[m] = host_profiles[host][m]
-            macros[m] = host_profiles[host][m]
-        macros_to_copy = [('%{_build}',        '%{_host}'),
-                          ('%{_build_alias}',  '%{_host_alias}'),
-                          ('%{_build_arch}',   '%{_host_arch}'),
-                          ('%{_build_cpu}',    '%{_host_cpu}'),
-                          ('%{_build_os}',     '%{_host_os}'),
-                          ('%{_build_vendor}', '%{_host_vendor}')]
-        for m in macros_to_copy:
-            opts.defaults[m[0]] = opts.defaults[m[1]]
-            macros[m[0]] = macros[m[1]]
-        #
-        # Look for a valid cc and cxx.
-        #
-        for cc in ['/usr/bin/cc', '/usr/bin/clang', '/usr/bin/gcc']:
-            if check.check_exe(cc, cc):
-                opts.defaults['__cc'] = cc
-                macros['__cc'] = cc
-                break
-        if not macros.defined('__cc'):
-            raise error.general('no valid cc found')
-        for cxx in ['/usr/bin/c++', '/usr/bin/clang++', '/usr/bin/g++']:
-            if check.check_exe(cxx, cxx):
-                opts.defaults['__cxx'] = cxx
-                macros['__cxx'] = cxx
-        if not macros.defined('__cxx'):
-            raise error.general('no valid c++ found')
-
-    def build(self, host, nesting_count = 0):
-
-        build_error = False
-
-        nesting_count += 1
-
-        log.trace('_bset: %s for %s: make' % (self.bset, host))
-        log.notice('Build Set: %s for %s' % (self.bset, host))
-
-        mail_subject = '%s on %s' % (self.bset,
-                                     self.macros.expand('%{_host}'))
-
-        current_path = os.environ['PATH']
-
-        start = datetime.datetime.now()
-
-        have_errors = False
-
-        try:
-            configs = self.load()
-
-            log.trace('_bset: %s: configs: %s'  % (self.bset, ','.join(configs)))
-
-            sizes_valid = False
-            builds = []
-            for s in range(0, len(configs)):
-                b = None
-                try:
-                    #
-                    # Each section of the build set gets a separate set of
-                    # macros so we do not contaminate one configuration with
-                    # another.
-                    #
-                    opts = copy.copy(self.opts)
-                    macros = copy.copy(self.macros)
-                    self.set_host_details(host, opts, macros)
-                    if configs[s].endswith('.bset'):
-                        log.trace('_bset: == %2d %s' % (nesting_count + 1, '=' * 75))
-                        bs = buildset(configs[s], self.configs, opts, macros)
-                        bs.build(host, nesting_count)
-                        del bs
-                    elif configs[s].endswith('.cfg'):
-                        log.trace('_bset: -- %2d %s' % (nesting_count + 1, '-' * 75))
-                        try:
-                            b = build.build(configs[s],
-                                            False,
-                                            opts,
-                                            macros)
-                        except:
-                            build_error = True
-                            raise
-                        self.build_package(configs[s], b)
-                        builds += [b]
-                        #
-                        # Dump post build macros.
-                        #
-                        log.trace('_bset: macros post-build')
-                        log.trace(str(macros))
-                    else:
-                        raise error.general('invalid config type: %s' % (configs[s]))
-                except error.general as gerr:
-                    have_errors = True
-                    if b is not None:
-                        if self.build_failure is None:
-                            self.build_failure = b.name()
-                    raise
-            #
-            # Clear out the builds ...
-            #
-            for b in builds:
-                del b
-        except error.general as gerr:
-            if not build_error:
-                log.stderr(str(gerr))
-            raise
-        except KeyboardInterrupt:
-            raise
-        except:
-            self.build_failure = 'RSB general failure'
-            raise
-        finally:
-            end = datetime.datetime.now()
-            os.environ['PATH'] = current_path
-            build_time = str(end - start)
-            log.notice('Build Set: Time %s' % (build_time))
-
-def list_bset_files(opts, configs):
-    ext = '.bset'
-    for p in configs['paths']:
-        print('Examining: %s' % (os.path.relpath(p)))
-    for c in configs['files']:
-        if c.endswith(ext):
-            print('    %s' % (c[:c.rfind('.')]))
-
-def load_log(logfile):
-    log.default = log.log(streams = [logfile])
-
-def log_default():
-    return 'rsb-log-getsource-%s.txt' % (datetime.datetime.now().strftime('%Y%m%d-%H%M%S'))
-
-def load_options(argv, argopts, defaults = '%{_sbdir}/defaults.mc'):
-    opts = options(argv, argopts, defaults)
-    opts.defaults['rtems_version'] = str(argopts.rtems_version)
-    return opts
-
 def run(args = sys.argv):
     ec = 0
     get_sources_error = True
@@ -617,22 +71,24 @@ def run(args = sys.argv):
                            action = 'store_true')
         argsp.add_argument('--log', help = 'Log file.',
                            type = str,
-                           default = log_default())
+                           default = simhost.log_default('getsource'))
         argsp.add_argument('--trace', help = 'Enable trace logging for debugging.',
                            action = 'store_true')
         argsp.add_argument('bsets', nargs='*', help = 'Build sets.')
 
         argopts = argsp.parse_args(args[2:])
 
-        load_log(argopts.log)
+        simhost.load_log(argopts.log)
         log.notice('RTEMS Source Builder - Get Sources, %s' % (version.string()))
         log.tracing = argopts.trace
 
-        opts = load_options(args, argopts)
+        opts = simhost.load_options(args, argopts, extras = ['--with-download'])
         configs = build.get_configs(opts)
 
-        if argopts.list_bsets:
-            list_bset_files(opts, configs)
+        if argopts.list_hosts:
+            simhost.list_hosts()
+        elif argopts.list_bsets:
+            simhost.list_bset_files(opts, configs)
         else:
             if argopts.clean:
                 if argopts.download_dir is None:
@@ -640,14 +96,23 @@ def run(args = sys.argv):
                 if path.exists(argopts.download_dir):
                     log.notice('Cleaning source directory: %s' % (argopts.download_dir))
                     path.removeall(argopts.download_dir)
+            all_bsets = simhost.get_bset_files(configs)
             if len(argopts.bsets) == 0:
-                raise error.general('no build sets provided on the command line')
-            for bset in argopts.bsets:
-                get_sources_error = True
-                b = buildset(bset, configs, opts)
-                get_sources_error = False
-                for host in host_profiles:
-                    b.build(host)
+                bsets = all_bsets
+            else:
+                bsets = argopts.bsets
+            for bset in bsets:
+                b = None
+                try:
+                    for host in simhost.profiles:
+                        get_sources_error = True
+                        b = simhost.buildset(bset, configs, opts)
+                        get_sources_error = False
+                        b.build(host)
+                        del b
+                except error.general as gerr:
+                    log.stderr(str(gerr))
+                    log.stderr('Build FAILED')
                 b = None
     except error.general as gerr:
         if get_sources_error:
diff --git a/source-builder/sb/simhost.py b/source-builder/sb/simhost.py
new file mode 100644
index 0000000..13ab157
--- /dev/null
+++ b/source-builder/sb/simhost.py
@@ -0,0 +1,657 @@
+#
+# RTEMS Tools Project (http://www.rtems.org/)
+# Copyright 2010-2020 Chris Johns (chrisj@rtems.org)
+# All rights reserved.
+#
+# This file is part of the RTEMS Tools package in 'rtems-tools'.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+#
+# This code builds a package compiler tool suite given a tool set. A tool
+# set lists the various tools. These are specific tool configurations.
+#
+
+from __future__ import print_function
+
+import copy
+import datetime
+import os
+
+try:
+    import build
+    import check
+    import error
+    import git
+    import log
+    import macros
+    import path
+    import sources
+    import version
+except KeyboardInterrupt:
+    print('abort: user terminated', file = sys.stderr)
+    sys.exit(1)
+except:
+    print('error: unknown application load error', file = sys.stderr)
+    sys.exit(1)
+
+#
+# Define host profiles so it can simulated on another host.
+#
+profiles = {
+    'darwin':  { '_os':              ('none',    'none',     'darwin'),
+                 '_host':            ('triplet', 'required', 'x86_64-apple-darwin18.5.0'),
+                 '_host_vendor':     ('none',    'none',     'apple'),
+                 '_host_os':         ('none',    'none',     'darwin'),
+                 '_host_os_version': ('none',    'none',     '18.5.0'),
+                 '_host_cpu':        ('none',    'none',     'x86_64'),
+                 '_host_alias':      ('none',    'none',     '%{nil}'),
+                 '_host_arch':       ('none',    'none',     'x86_64'),
+                 '_usr':             ('dir',     'optional', '/usr/local'),
+                 '_var':             ('dir',     'optional', '/usr/local/var') },
+    'freebsd': { '_os':              ('none',    'none',     'freebsd'),
+                 '_host':            ('triplet', 'required', 'x86_64-freebsd12.0-RELEASE-p3'),
+                 '_host_vendor':     ('none',    'none',     'pc'),
+                 '_host_os':         ('none',    'none',     'freebsd'),
+                 '_host_os_version': ('none',    'none',     '12.0-RELEASE-p3'),
+                 '_host_cpu':        ('none',    'none',     'x86_64'),
+                 '_host_alias':      ('none',    'none',     '%{nil}'),
+                 '_host_arch':       ('none',    'none',     'x86_64'),
+                 '_usr':             ('dir',     'optional', '/usr/local'),
+                 '_var':             ('dir',     'optional', '/usr/local/var') },
+    'linux':   { '_os':              ('none',    'none',     'linux'),
+                 '_host':            ('triplet', 'required', 'x86_64-linux-gnu'),
+                 '_host_vendor':     ('none',    'none',     'gnu'),
+                 '_host_os':         ('none',    'none',     'linux'),
+                 '_host_os_version': ('none',    'none',     '4.18.0-16'),
+                 '_host_cpu':        ('none',    'none',     'x86_64'),
+                 '_host_alias':      ('none',    'none',     '%{nil}'),
+                 '_host_arch':       ('none',    'none',     'x86_64'),
+                 '_usr':             ('dir',     'optional', '/usr/local'),
+                 '_var':             ('dir',     'optional', '/usr/local/var') },
+    'netbsd':  { '_os':              ('none',    'none',     'netbsd'),
+                 '_host':            ('triplet', 'required', 'x86_64-netbsd8.0'),
+                 '_host_vendor':     ('none',    'none',     'pc'),
+                 '_host_os':         ('none',    'none',     'netbsd'),
+                 '_host_os_version': ('none',    'none',     '8.0'),
+                 '_host_cpu':        ('none',    'none',     'x86_64'),
+                 '_host_alias':      ('none',    'none',     '%{nil}'),
+                 '_host_arch':       ('none',    'none',     'x86_64'),
+                 '_usr':             ('dir',     'optional', '/usr/local'),
+                 '_var':             ('dir',     'optional', '/usr/local/var') },
+    'solaris': { '_os':              ('none',    'none',     'solaris'),
+                 '_host':            ('triplet', 'required', 'x86_64-pc-solaris2'),
+                 '_host_vendor':     ('none',    'none',     'pc'),
+                 '_host_os':         ('none',    'none',     'solaris'),
+                 '_host_os_version': ('none',    'none',     '2'),
+                 '_host_cpu':        ('none',    'none',     'x86_64'),
+                 '_host_alias':      ('none',    'none',     '%{nil}'),
+                 '_host_arch':       ('none',    'none',     'x86_64'),
+                 '_usr':             ('dir',     'optional', '/usr/local'),
+                 '_var':             ('dir',     'optional', '/usr/local/var') },
+    'win32':   { '_os':              ('none',    'none',     'win32'),
+                 '_windows_os':      ('none',    'none',     'mingw32'),
+                 '_host':            ('triplet', 'required', 'x86_64-w64-mingw32'),
+                 '_host_vendor':     ('none',    'none',     'pc'),
+                 '_host_os':         ('none',    'none',     'win32'),
+                 '_host_os_version': ('none',    'none',     '10'),
+                 '_host_cpu':        ('none',    'none',     'x86_64'),
+                 '_host_alias':      ('none',    'none',     '%{nil}'),
+                 '_host_arch':       ('none',    'none',     'x86_64'),
+                 '_usr':             ('dir',     'optional', '/usr/local'),
+                 '_var':             ('dir',     'optional', '/usr/local/var') },
+    'cygwin':  { '_os':              ('none',    'none',     'win32'),
+                 '_windows_os':      ('none',    'none',     'cygwin'),
+                 '_host':            ('triplet', 'required', 'x86_64-w64-cygwin'),
+                 '_host_vendor':     ('none',    'none',     'microsoft'),
+                 '_host_os':         ('none',    'none',     'win32'),
+                 '_host_os_version': ('none',    'none',     '10'),
+                 '_host_cpu':        ('none',    'none',     'x86_64'),
+                 '_host_alias':      ('none',    'none',     '%{nil}'),
+                 '_host_arch':       ('none',    'none',     'x86_64'),
+                 '_usr':             ('dir',     'optional', '/usr/local'),
+                 '_var':             ('dir',     'optional', '/usr/local/var') },
+}
+
+
+class log_capture(object):
+    def __init__(self):
+        self.log = []
+        log.capture = self.capture
+
+    def __str__(self):
+        return os.linesep.join(self.log)
+
+    def capture(self, text):
+        self.log += [l for l in text.replace(chr(13), '').splitlines()]
+
+    def get(self):
+        return self.log
+
+    def clear(self):
+        self.log = []
+
+def find_bset_config(bset_config, macros):
+    '''Find the build set or config file using the macro config defined path.'''
+    name = bset_config
+    if not path.exists(name):
+        for cp in macros.expand('%{_configdir}').split(':'):
+            configdir = path.abspath(cp)
+            name = path.join(configdir, bset_config)
+            if path.exists(name):
+                break
+            name = None
+        if name is None:
+            raise error.general('no build set file found: %s' % (bset_config))
+    return name
+
+#
+# A skinny options command line class to get the configs to load.
+#
+class options(object):
+    def __init__(self, argv, argopts, defaults, extras):
+        command_path = path.dirname(path.abspath(argv[1]))
+        if len(command_path) == 0:
+            command_path = '.'
+        self.command_path = command_path
+        self.command_name = path.basename(argv[0])
+        extras += ['--dry-run',
+                   '--quiet',
+                   '--without-log',
+                   '--without-error-report',
+                   '--without-release-url']
+        self.argv = argv
+        self.args = argv[1:] + extras
+        self.defaults = macros.macros(name = defaults,
+                                      sbdir = command_path)
+        self.load_overrides()
+        self.opts = { 'params' :  extras }
+        self.sb_git()
+        self.rtems_bsp()
+        if 'download_dir' in argopts and argopts.download_dir is not None:
+            self.defaults['_sourcedir'] = ('dir',
+                                           'optional',
+                                           path.abspath(argopts.download_dir))
+            self.defaults['_patchdir'] = ('dir',
+                                          'optional',
+                                          path.abspath(argopts.download_dir))
+
+    def load_overrides(self):
+        overrides = None
+        if os.name == 'nt':
+            try:
+                import windows
+                overrides = windows.load()
+                host_windows = True
+                host_posix = False
+            except:
+                raise error.general('failed to load Windows host support')
+        elif os.name == 'posix':
+            uname = os.uname()
+            try:
+                if uname[0].startswith('MINGW64_NT'):
+                    import windows
+                    overrides = windows.load()
+                    host_windows = True
+                elif uname[0].startswith('CYGWIN_NT'):
+                    import windows
+                    overrides = windows.load()
+                elif uname[0] == 'Darwin':
+                    import darwin
+                    overrides = darwin.load()
+                elif uname[0] == 'FreeBSD':
+                    import freebsd
+                    overrides = freebsd.load()
+                elif uname[0] == 'NetBSD':
+                    import netbsd
+                    overrides = netbsd.load()
+                elif uname[0] == 'Linux':
+                    import linux
+                    overrides = linux.load()
+                elif uname[0] == 'SunOS':
+                    import solaris
+                    overrides = solaris.load()
+            except error.general as ge:
+                raise error.general('failed to load %s host support: %s' % (uname[0], ge))
+            except:
+                raise error.general('failed to load %s host support' % (uname[0]))
+        else:
+            raise error.general('unsupported host type; please add')
+        if overrides is None:
+            raise error.general('no hosts defaults found; please add')
+        for k in overrides:
+            self.defaults[k] = overrides[k]
+
+    def parse_args(self, arg, error = True, extra = True):
+        for a in range(0, len(self.args)):
+            if self.args[a].startswith(arg):
+                lhs = None
+                rhs = None
+                if '=' in self.args[a]:
+                    eqs = self.args[a].split('=')
+                    lhs = eqs[0]
+                    if len(eqs) > 2:
+                        rhs = '='.join(eqs[1:])
+                    else:
+                        rhs = eqs[1]
+                elif extra:
+                    lhs = self.args[a]
+                    a += 1
+                    if a < len(self.args):
+                        rhs = self.args[a]
+                return [lhs, rhs]
+            a += 1
+        return None
+
+    def rtems_bsp(self):
+        self.defaults['rtems_version'] = str(version.version())
+        self.defaults['_target'] = 'arch-rtems'
+        self.defaults['rtems_host'] = 'rtems-arch'
+        self.defaults['with_rtems_bsp'] = 'rtems-bsp'
+
+    def sb_git(self):
+        repo = git.repo(self.defaults.expand('%{_sbdir}'), self)
+        repo_mail = None
+        if repo.valid():
+            repo_valid = '1'
+            repo_head = repo.head()
+            repo_clean = not repo.dirty()
+            repo_remotes = '%{nil}'
+            remotes = repo.remotes()
+            if 'origin' in remotes:
+                repo_remotes = '%s/origin' % (remotes['origin']['url'])
+                repo_id = repo_head
+            if not repo_clean:
+                repo_id += '-modified'
+                repo_mail = repo.email()
+        else:
+            repo_valid = '0'
+            repo_head = '%{nil}'
+            repo_clean = '%{nil}'
+            repo_remotes = '%{nil}'
+            repo_id = 'no-repo'
+        self.defaults['_sbgit_valid'] = repo_valid
+        self.defaults['_sbgit_head']  = repo_head
+        self.defaults['_sbgit_clean'] = str(repo_clean)
+        self.defaults['_sbgit_remotes'] = str(repo_remotes)
+        self.defaults['_sbgit_id']    = repo_id
+        if repo_mail is not None:
+            self.defaults['_sbgit_mail'] = repo_mail
+
+    def get_arg(self, arg):
+        if self.optargs is None or arg not in self.optargs:
+            return None
+        return self.parse_args(arg)
+
+    def with_arg(self, label, default = 'not-found'):
+        # the default if there is no option for without.
+        result = default
+        for pre in ['with', 'without']:
+            arg_str = '--%s-%s' % (pre, label)
+            arg_label = '%s_%s' % (pre, label)
+            arg = self.parse_args(arg_str, error = False, extra = False)
+            if arg is not None:
+                if arg[1] is  None:
+                    result = 'yes'
+                else:
+                    result = arg[1]
+                break
+        return [arg_label, result]
+
+    def dry_run(self):
+        return True
+
+    def keep_going(self):
+        return False
+
+    def quiet(self):
+            return True
+
+    def no_clean(self):
+        return True
+
+    def always_clean(self):
+        return False
+
+    def no_install(self):
+        return True
+
+    def download_disabled(self):
+        return False
+
+    def disable_install(self):
+        return True
+
+    def urls(self):
+        return None
+
+    def info(self):
+        s = ' Command Line: %s%s' % (' '.join(self.argv), os.linesep)
+        s += ' Python: %s' % (sys.version.replace('\n', ''))
+        return s
+
+class buildset:
+    """Build a set builds a set of packages."""
+
+    def __init__(self, bset, _configs, opts, macros = None):
+        log.trace('_bset: %s: init' % (bset))
+        self.parent = 'root'
+        self._includes = []
+        self._errors = []
+        self.configs = _configs
+        self.opts = opts
+        if macros is None:
+            self.macros = copy.copy(opts.defaults)
+        else:
+            self.macros = copy.copy(macros)
+        self.macros.define('_rsb_getting_source')
+        log.trace('_bset: %s: macro defaults' % (bset))
+        log.trace(str(self.macros))
+        self.bset = bset
+        _target = self.macros.expand('%{_target}')
+        if len(_target):
+            pkg_prefix = _target
+        else:
+            pkg_prefix = self.macros.expand('%{_host}')
+        self.bset_pkg = '%s-%s-set' % (pkg_prefix, self.bset)
+        self.build_failure = None
+
+    def _add_includes(self, includes, parent = None):
+        if parent is None:
+            parent = self.parent
+        if not isinstance(includes, list):
+            includes = [includes]
+        self._includes += [i + ':' + parent for i in includes]
+
+    def _rebase_includes(self, includes, parent):
+        if not isinstance(includes, list):
+            includes = [includes]
+        rebased = []
+        for i in includes:
+            if i.split(':', 2)[1] == 'root':
+                rebased += [i.split(':', 2)[0] + ':' + parent]
+            else:
+                rebased += [i]
+        return rebased
+
+    def includes(self):
+        return sorted(list(set(self._includes)))
+
+    def errors(self):
+        return sorted(list(set(self._errors)))
+
+    def build_package(self, _config, _build):
+        if not _build.disabled():
+            _build.make()
+
+    def parse(self, bset):
+
+        #
+        # Ouch, this is a copy of the setbuilder.py code.
+        #
+
+        def _clean(line):
+            line = line[0:-1]
+            b = line.find('#')
+            if b >= 0:
+                line = line[1:b]
+            return line.strip()
+
+        bsetname = find_bset_config(bset, self.macros)
+
+        try:
+            log.trace('_bset: %s: open: %s' % (self.bset, bsetname))
+            bsetf = open(path.host(bsetname), 'r')
+        except IOError as err:
+            raise error.general('error opening bset file: %s' % (bsetname))
+
+        self._add_includes(bsetname)
+        parent = self.parent
+        self.parent = bsetname
+
+        configs = []
+
+        try:
+            lc = 0
+            for l in bsetf:
+                lc += 1
+                l = _clean(l)
+                if len(l) == 0:
+                    continue
+                log.trace('_bset: %s: %03d: %s' % (self.bset, lc, l))
+                ls = l.split()
+                if ls[0][-1] == ':' and ls[0][:-1] == 'package':
+                    self.bset_pkg = ls[1].strip()
+                    self.macros['package'] = self.bset_pkg
+                elif ls[0][0] == '%':
+                    def err(msg):
+                        raise error.general('%s:%d: %s' % (self.bset, lc, msg))
+                    if ls[0] == '%define':
+                        if len(ls) > 2:
+                            self.macros.define(ls[1].strip(),
+                                               ' '.join([f.strip() for f in ls[2:]]))
+                        else:
+                            self.macros.define(ls[1].strip())
+                    elif ls[0] == '%undefine':
+                        if len(ls) > 2:
+                            raise error.general('%s:%d: %undefine requires just the name' \
+                                                % (self.bset, lc))
+                        self.macros.undefine(ls[1].strip())
+                    elif ls[0] == '%include':
+                        configs += self.parse(ls[1].strip())
+                    elif ls[0] in ['%patch', '%source']:
+                        sources.process(ls[0][1:], ls[1:], self.macros, err)
+                    elif ls[0] == '%hash':
+                        sources.hash(ls[1:], self.macros, err)
+                else:
+                    l = l.strip()
+                    c = build.find_config(l, self.configs)
+                    if c is None:
+                        raise error.general('%s:%d: cannot find file: %s'
+                                            % (self.bset, lc, l))
+                    configs += [c + ':' + self.parent]
+        finally:
+            bsetf.close()
+            self.parent = parent
+
+        return configs
+
+    def load(self):
+        #
+        # If the build set file ends with .cfg the user has passed to the
+        # buildset builder a configuration so we just return it.
+        #
+        if self.bset.endswith('.cfg'):
+            self._add_includes(self.bset)
+            configs = [self.bset]
+        else:
+            exbset = self.macros.expand(self.bset)
+            self.macros['_bset'] = exbset
+            self.macros['_bset_tmp'] = build.short_name(exbset)
+            root, ext = path.splitext(exbset)
+            if exbset.endswith('.bset'):
+                bset = exbset
+            else:
+                bset = '%s.bset' % (exbset)
+            configs = self.parse(bset)
+        return configs
+
+    def set_host_details(self, host, opts, macros):
+        if host not in profiles:
+            raise error.general('invalid host: ' + host)
+        for m in profiles[host]:
+            opts.defaults[m] = profiles[host][m]
+            macros[m] = profiles[host][m]
+        macros_to_copy = [('%{_build}',        '%{_host}'),
+                          ('%{_build_alias}',  '%{_host_alias}'),
+                          ('%{_build_arch}',   '%{_host_arch}'),
+                          ('%{_build_cpu}',    '%{_host_cpu}'),
+                          ('%{_build_os}',     '%{_host_os}'),
+                          ('%{_build_vendor}', '%{_host_vendor}')]
+        for m in macros_to_copy:
+            opts.defaults[m[0]] = opts.defaults[m[1]]
+            macros[m[0]] = macros[m[1]]
+        #
+        # Look for a valid cc and cxx.
+        #
+        for cc in ['/usr/bin/cc', '/usr/bin/clang', '/usr/bin/gcc']:
+            if check.check_exe(cc, cc):
+                opts.defaults['__cc'] = cc
+                macros['__cc'] = cc
+                break
+        if not macros.defined('__cc'):
+            raise error.general('no valid cc found')
+        for cxx in ['/usr/bin/c++', '/usr/bin/clang++', '/usr/bin/g++']:
+            if check.check_exe(cxx, cxx):
+                opts.defaults['__cxx'] = cxx
+                macros['__cxx'] = cxx
+        if not macros.defined('__cxx'):
+            raise error.general('no valid c++ found')
+
+    def build(self, host, nesting_count = 0):
+
+        build_error = False
+
+        nesting_count += 1
+
+        log.trace('_bset: %s for %s: make' % (self.bset, host))
+        log.notice('Build Set: %s for %s' % (self.bset, host))
+
+        mail_subject = '%s on %s' % (self.bset,
+                                     self.macros.expand('%{_host}'))
+
+        current_path = os.environ['PATH']
+
+        start = datetime.datetime.now()
+
+        have_errors = False
+
+        try:
+            configs = self.load()
+
+            log.trace('_bset: %s: configs: %s'  % (self.bset, ','.join(configs)))
+
+            sizes_valid = False
+            builds = []
+            for s in range(0, len(configs)):
+                bs = None
+                b = None
+                try:
+                    #
+                    # Each section of the build set gets a separate set of
+                    # macros so we do not contaminate one configuration with
+                    # another.
+                    #
+                    opts = copy.copy(self.opts)
+                    macros = copy.copy(self.macros)
+                    self.set_host_details(host, opts, macros)
+                    config, parent = configs[s].split(':', 2)
+                    if config.endswith('.bset'):
+                        log.trace('_bset: == %2d %s' % (nesting_count + 1, '=' * 75))
+                        bs = buildset(config, self.configs, opts, macros)
+                        bs.build(host, nesting_count)
+                        self._includes += \
+                            self._rebase_includes(bs.includes(), parent)
+                        del bs
+                    elif config.endswith('.cfg'):
+                        log.trace('_bset: -- %2d %s' % (nesting_count + 1, '-' * 75))
+                        try:
+                            b = build.build(config,
+                                            False,
+                                            opts,
+                                            macros)
+                            self._includes += \
+                                self._rebase_includes(b.includes(), parent)
+                        except:
+                            build_error = True
+                            raise
+                        self.build_package(config, b)
+                        builds += [b]
+                        #
+                        # Dump post build macros.
+                        #
+                        log.trace('_bset: macros post-build')
+                        log.trace(str(macros))
+                    else:
+                        raise error.general('invalid config type: %s' % (config))
+                except error.general as gerr:
+                    have_errors = True
+                    if b is not None:
+                        if self.build_failure is None:
+                            self.build_failure = b.name()
+                        self._includes += b.includes()
+                    self._errors += [find_bset_config(config, opts.defaults) + ':' + parent] + self._includes
+                    raise
+            #
+            # Clear out the builds ...
+            #
+            for b in builds:
+                del b
+        except error.general as gerr:
+            if not build_error:
+                log.stderr(str(gerr))
+            raise
+        except KeyboardInterrupt:
+            raise
+        except:
+            self.build_failure = 'RSB general failure'
+            raise
+        finally:
+            end = datetime.datetime.now()
+            os.environ['PATH'] = current_path
+            build_time = str(end - start)
+            log.notice('Build Set: Time %s' % (build_time))
+
+def list_hosts():
+    hosts = sorted(profiles.keys())
+    max_os_len = max(len(h) for h in hosts)
+    max_host_len = max(len(profiles[h]['_host'][2]) for h in hosts)
+    for h in hosts:
+        print('%*s: %-*s %s' % (max_os_len, h, max_host_len,
+                                profiles[h]['_host'][2],
+                                profiles[h]['_host'][2]))
+
+def get_files(configs, ext, localpath):
+    files = []
+    if localpath:
+        for cp in configs['localpaths']:
+            files += [c for c in configs[cp] if c.endswith(ext)]
+    else:
+        files = [c for c in configs['files'] if c.endswith(ext)]
+    return files
+
+def get_config_files(configs, localpath = False):
+    return get_files(configs, '.cfg', localpath)
+
+def get_bset_files(configs, localpath = False):
+    return get_files(configs, '.bset', localpath)
+
+def get_root(configs):
+    return configs['root']
+
+def list_bset_files(opts, configs):
+    for p in configs['paths']:
+        print('Examining: %s' % (os.path.relpath(p)))
+    for b in get_bset_files(configs):
+        print(' %s' % (b[:b.rfind('.')]))
+
+def load_log(logfile):
+    log.default = log.log(streams = [logfile])
+
+def log_default(name):
+    return 'rsb-log-%s-%s.txt' % (name, datetime.datetime.now().strftime('%Y%m%d-%H%M%S'))
+
+def load_options(argv, argopts, defaults = '%{_sbdir}/defaults.mc', extras = []):
+    opts = options(argv, argopts, defaults, extras)
+    opts.defaults['rtems_version'] = str(argopts.rtems_version)
+    return opts
diff --git a/source-builder/sb/track.py b/source-builder/sb/track.py
new file mode 100644
index 0000000..ef4ce8b
--- /dev/null
+++ b/source-builder/sb/track.py
@@ -0,0 +1,254 @@
+#
+# RTEMS Tools Project (http://www.rtems.org/)
+# Copyright 2020 Chris Johns (chrisj@rtems.org)
+# All rights reserved.
+#
+# This file is part of the RTEMS Tools package in 'rtems-tools'.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+#
+# This code builds a package compiler tool suite given a tool set. A tool
+# set lists the various tools. These are specific tool configurations.
+#
+
+from __future__ import print_function
+
+import argparse
+import copy
+import datetime
+import os
+import sys
+
+try:
+    import build
+    import error
+    import git
+    import log
+    import simhost
+    import version
+except KeyboardInterrupt:
+    print('abort: user terminated', file = sys.stderr)
+    sys.exit(1)
+except:
+    print('error: unknown application load error', file = sys.stderr)
+    sys.exit(1)
+
+def unique(l):
+    return sorted(list(set(l)))
+
+def filter_deps(deps, ext):
+    rdeps = []
+    for d in deps:
+        ds = d.split(':', 2)
+        if ds[0].endswith(ext):
+            rdeps += [ds[0] + ':' + ds[1]]
+    return sorted(rdeps)
+
+def normalise_paths(includes, root):
+    normalised = []
+    for inc in unique(includes):
+        config, parent = inc.split(':', 2)
+        if config.startswith(root):
+            config = config[len(root):]
+        if parent.startswith(root):
+            parent = parent[len(root):]
+        normalised += [config + ':' + parent]
+    return normalised
+
+def process_dependencies(includes):
+    deps = {}
+    incs = [i.split(':', 2) for i in includes]
+    for config, parent in incs:
+        if parent not in deps:
+            deps[parent] = []
+        for inc in incs:
+            if inc[1] == parent:
+                deps[parent] += [inc[0]]
+    for d in deps:
+        deps[d] = unique(deps[d])
+    return deps
+
+def includes_str(includes):
+    o = []
+    deps = [i.split(':', 2) for i in includes]
+    ll = max([len(d[1]) for d in deps])
+    for d in deps:
+        o += ['%*s %s' % (ll, d[1], d[0])]
+    return o
+
+def deps_str(deps):
+    def print_node(deps, node, level = 0, prefix = '', indent = ''):
+        o = []
+        if node != 'root':
+            level += 1
+            if level == 1:
+                o += ['']
+            o += [prefix + '+-- ' +  node]
+        if node in deps:
+            prefix += indent
+            for c, child in enumerate(deps[node], start = 1):
+                if c < len(deps[node]) and level > 1:
+                    indent = '|    '
+                else:
+                    indent = '     '
+                o += print_node(deps, child, level, prefix, indent)
+        return o
+    return print_node(deps, 'root')
+
+def run(args = sys.argv):
+    ec = 0
+    output = []
+    try:
+        #
+        # The RSB options support cannot be used because it loads the defaults
+        # for the host which we cannot do here.
+        #
+        description  = 'RTEMS Track Dependencies a build set has for all hosts.'
+
+        argsp = argparse.ArgumentParser(prog = 'sb-dep-check',
+                                        description = description)
+        argsp.add_argument('--rtems-version', help = 'Set the RTEMS version.',
+                           type = str,
+                           default = version.version())
+        argsp.add_argument('--list-hosts', help = 'List the hosts.',
+                           action = 'store_true')
+        argsp.add_argument('--list-bsets', help = 'List the hosts.',
+                           action = 'store_true')
+        argsp.add_argument('--output', help = 'Output file.',
+                           type = str,
+                           default = None)
+        argsp.add_argument('--log', help = 'Log file.',
+                           type = str,
+                           default = simhost.log_default('trackdeps'))
+        argsp.add_argument('--trace', help = 'Enable trace logging for debugging.',
+                           action = 'store_true')
+        argsp.add_argument('--not-referenced',
+                           help = 'Write out the list of not config files not referenced.',
+                           action = 'store_true')
+        argsp.add_argument('bsets', nargs='*', help = 'Build sets.')
+
+        argopts = argsp.parse_args(args[2:])
+
+        simhost.load_log(argopts.log)
+        log.notice('RTEMS Source Builder - Track Dependencies, %s' % (version.string()))
+        log.tracing = argopts.trace
+
+        opts = simhost.load_options(args, argopts, extras = ['---keep-going'])
+        configs = build.get_configs(opts)
+
+        if argopts.list_hosts:
+            simhost.list_hosts()
+        elif argopts.list_bsets:
+            simhost.list_bset_files(opts, configs)
+        else:
+            all_bsets = simhost.get_bset_files(configs)
+            if len(argopts.bsets) == 0:
+                bsets = all_bsets
+            else:
+                bsets = argopts.bsets
+            includes = []
+            errors = []
+            for bset in bsets:
+                b = None
+                try:
+                    for host in simhost.profiles:
+                        b = simhost.buildset(bset, configs, opts)
+                        b.build(host)
+                        includes += b.includes()
+                        errors += b.errors()
+                        del b
+                except error.general as gerr:
+                    log.stderr(str(gerr))
+                    log.stderr('Build FAILED')
+                    if b:
+                        includes += b.includes()
+                        errors += b.errors()
+                b = None
+            root = simhost.get_root(configs)
+            all_configs = simhost.get_config_files(configs, True)
+            includes = normalise_paths(includes, root)
+            bsets = filter_deps(includes, '.bset')
+            configs = filter_deps(includes, '.cfg')
+            deps_tree = deps_str(process_dependencies(bsets + configs))
+            bsets = unique([b.split(':', 2)[0] for b in bsets])
+            configs = unique([i.split(':', 2)[0] for i in configs])
+            not_used_configs = [c for c in all_configs if c not in configs]
+            if len(errors) > 0:
+                errors = [e.split(':', 2)[0] for e in normalise_paths(errors, root)]
+                errs = []
+                for e in errors:
+                    if e not in bsets + configs:
+                        errs += [e]
+                errors = errs
+            if argopts.not_referenced:
+                output = not_used_configs
+            else:
+                output = ['RSB Dependency Tracker',
+                          '',
+                          'Total buildsets: %d' % (len(all_bsets)),
+                          'Total configs: %d' % (len(all_configs)),
+                          '']
+                if len(errors) > 0:
+                    output += ['Errored File Set (%d):' % (len(errors)),
+                               ''] + \
+                              errors + \
+                              ['']
+                if len(configs) > 0:
+                    output += ['Include Tree(s):',
+                               ''] + \
+                               deps_tree + \
+                               ['']
+                if len(bsets) > 0:
+                    output += ['Buildsets (%d):' % (len(bsets)),
+                               ''] + \
+                               bsets + \
+                               ['']
+                if len(configs) > 0:
+                    output += ['Configurations (%d):' % (len(configs)),
+                               ''] + \
+                               configs + \
+                               ['']
+                if len(not_used_configs) > 0:
+                    output += ['Not referenced (%d): ' % (len(not_used_configs)),
+                               ''] + \
+                               not_used_configs
+            output = os.linesep.join(output)
+            if argopts.output:
+                o = open(argopts.output, "w")
+                o.write(output)
+                o.close
+            else:
+                print()
+                print(output)
+    except error.general as gerr:
+        log.stderr(str(gerr))
+        log.stderr('Build FAILED')
+        ec = 1
+    except error.internal as ierr:
+        log.stderr(str(ierr))
+        log.stderr('Internal Build FAILED')
+        ec = 1
+    except error.exit as eerr:
+        pass
+    except KeyboardInterrupt:
+        log.notice('abort: user terminated')
+        ec = 1
+    except:
+        raise
+        log.notice('abort: unknown error')
+        ec = 1
+    sys.exit(ec)
+
+if __name__ == "__main__":
+    run()