diff --git a/tb/freebsd.py b/tb/freebsd.py
new file mode 100644
index 0000000..fce4629
--- /dev/null
+++ b/tb/freebsd.py
@@ -0,0 +1,66 @@
+#
+# RTEMS Tools Project (http://www.rtems.org/)
+# Copyright 2010-2012 Chris Johns (chrisj@rtems.org)
+# All rights reserved.
+#
+# This file is part of the RTEMS Tools package in 'rtems-tools'.
+#
+# RTEMS Tools 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.
+#
+# RTEMS Tools 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 RTEMS Tools.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#
+# This code is based on what ever doco about spec files I could find and
+# RTEMS project's spec files.
+#
+
+import pprint
+import os
+
+import execute
+
+def load():
+    uname = os.uname()
+    sysctl = '/sbin/sysctl '
+    e = execute.capture_execution()
+    exit_code, proc, output = e.shell(sysctl + 'hw.ncpu')
+    if exit_code == 0:
+        smp_mflags = '-j' + output.split(' ')[1].strip()
+    else:
+        smp_mflags = ''
+    if uname[4] == 'amd64':
+        cpu = 'x86_64'
+    else:
+        cpu = uname[4]
+    version = uname[2]
+    if version.find('-') > 0:
+        version = version.split('-')[0]
+    defines = {
+        '_os':                     'freebsd',
+        '_host':                   cpu + '-freebsd' + version,
+        '_host_vendor':            'pc',
+        '_host_os':                'freebsd',
+        '_host_cpu':               cpu,
+        '_host_alias':             '%{nil}',
+        '_host_arch':              cpu,
+        '_usr':                    '/usr/local',
+        '_var':                    '/usr/local/var',
+        'optflags':                '-O2 -I/usr/local/include -L/usr/local/lib',
+        '_smp_mflags':             smp_mflags,
+        '__xz':                    '/usr/bin/xz',
+        '__make':                  'gmake',
+        }
+    return defines
+
+if __name__ == '__main__':
+    pprint.pprint(load())