diff --git a/build_files/scons/config/win32-vc-config.py b/build_files/scons/config/win32-vc-config.py
index ff01cdd7917..0440093b41a 100644
--- a/build_files/scons/config/win32-vc-config.py
+++ b/build_files/scons/config/win32-vc-config.py
@@ -153,16 +153,16 @@ WITH_BF_OPENMP = True
 WITH_BF_CYCLES = True 
 
 WITH_BF_OIIO = True
-BF_OIIO = LIBDIR + '/openimageio'
-BF_OIIO_INC = '#../lib/windows/openimageio/include'
+BF_OIIO = '${LIBDIR}/openimageio'
+BF_OIIO_INC = '${BF_OIIO}/include'
 BF_OIIO_LIB = 'OpenImageIO'
-BF_OIIO_LIBPATH = '#../lib/windows/openimageio/lib'
+BF_OIIO_LIBPATH = '${BF_OIIO}/lib'
 
 WITH_BF_BOOST = True
-BF_BOOST = LIBDIR + '/boost'
-BF_BOOST_INC = '#../lib/windows/boost/include'
+BF_BOOST = '${LIBDIR}/boost'
+BF_BOOST_INC = '${BF_BOOST}/include'
 BF_BOOST_LIB = 'libboost_date_time-vc90-mt-s-1_47 libboost_filesystem-vc90-mt-s-1_47 libboost_regex-vc90-mt-s-1_47 libboost_system-vc90-mt-s-1_47 libboost_thread-vc90-mt-s-1_47'
-BF_BOOST_LIBPATH = '#../lib/windows/boost/lib'
+BF_BOOST_LIBPATH = '${BF_BOOST}/lib'
 
 #Ray trace optimization
 WITH_BF_RAYOPTIMIZATION = True
diff --git a/build_files/scons/config/win64-vc-config.py b/build_files/scons/config/win64-vc-config.py
index d910bdc5ca6..8c2956666a9 100644
--- a/build_files/scons/config/win64-vc-config.py
+++ b/build_files/scons/config/win64-vc-config.py
@@ -156,17 +156,17 @@ WITH_BF_OPENMP = True
 WITH_BF_CYCLES = True
 
 WITH_BF_OIIO = True
-BF_OIIO = LIBDIR + '/openimageio'
-BF_OIIO_INC = '#../lib/win64/openimageio/include'
+BF_OIIO = '${LIBDIR}/openimageio'
+BF_OIIO_INC = '${BF_OIIO}/include'
 BF_OIIO_LIB = 'OpenImageIO'
 BF_OIIO_LIBPATH = '${BF_OIIO}/lib'
-BF_OIIO_LIBPATH = '#../lib/win64/openimageio/lib'
+BF_OIIO_LIBPATH = '${BF_OIIO}/lib'
 
 WITH_BF_BOOST = True
-BF_BOOST = LIBDIR + '/boost'
-BF_BOOST_INC = '#../lib/win64/boost/include'
+BF_BOOST = '${LIBDIR}/boost'
+BF_BOOST_INC = '${BF_BOOST}/include'
 BF_BOOST_LIB = 'libboost_date_time-vc90-mt-s-1_47 libboost_filesystem-vc90-mt-s-1_47 libboost_regex-vc90-mt-s-1_47 libboost_system-vc90-mt-s-1_47 libboost_thread-vc90-mt-s-1_47'
-BF_BOOST_LIBPATH = '#../lib/win64/boost/lib'
+BF_BOOST_LIBPATH = '${BF_BOOST}/lib'
 
 #Ray trace optimization
 WITH_BF_RAYOPTIMIZATION = True
diff --git a/build_files/scons/tools/btools.py b/build_files/scons/tools/btools.py
index 6686b948631..b4b10ba0bfa 100644
--- a/build_files/scons/tools/btools.py
+++ b/build_files/scons/tools/btools.py
@@ -240,6 +240,7 @@ def read_opts(env, cfg, args):
     localopts = Variables.Variables(cfg, args)
     localopts.AddVariables(
         ('LCGDIR', 'location of cvs lib dir'),
+        ('LIBDIR', 'root dir of libs'),
         (BoolVariable('WITH_BF_PYTHON', 'Compile with python', True)),
         (BoolVariable('WITH_BF_PYTHON_SAFETY', 'Internal API error checking to track invalid data to prevent crash on access (at the expense of some effeciency)', False)),
         ('BF_PYTHON', 'Base path for python', ''),
@@ -541,11 +542,13 @@ def read_opts(env, cfg, args):
         (BoolVariable('WITH_BF_CYCLES', 'Build with the Cycles engine', True)),
         
         (BoolVariable('WITH_BF_OIIO', 'Build with OpenImageIO', False)),
+        ('BF_OIIO', 'OIIO root path', ''),
         ('BF_OIIO_INC', 'OIIO include path', ''),
         ('BF_OIIO_LIB', 'OIIO library', ''),
         ('BF_OIIO_LIBPATH', 'OIIO library path', ''),
         
         (BoolVariable('WITH_BF_BOOST', 'Build with Boost', False)),
+        ('BF_BOOST', 'Boost root path', ''),
         ('BF_BOOST_INC', 'Boost include path', ''),
         ('BF_BOOST_LIB', 'Boost library', ''),
         ('BF_BOOST_LIBPATH', 'Boost library path', '')