SConstruct

##########################################################################
#
#  Copyright (c) 2007-2015, Image Engine Design Inc. All rights reserved.
#
#  Copyright 2010 Dr D Studios Pty Limited (ACN 127 184 954) (Dr. D Studios),
#  its affiliates and/or its licensors.
#
#  Copyright (c) 2012, John Haddon. All rights reserved.
#
#  Copyright 2012, Electric Theatre Collective Limited. All rights reserved.
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions are
#  met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
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#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#
#     * Neither the name of Image Engine Design nor the names of any
#       other contributors to this software may be used to endorse or
#       promote products derived from this software without specific prior
#       written permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
#  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
#  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
#  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
#  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
#  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
#  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
#  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
#  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
#  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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##########################################################################

import SCons
import shutil
import glob
import sys
import os
import re
import subprocess
import platform

EnsureSConsVersion( 0, 97 )
SConsignFile()

ieCoreMajorVersion=9
ieCoreMinorVersion=19
ieCorePatchVersion=0
ieCoreVersionSuffix=""	# used for alpha/beta releases. Example: "a1", "b2", etc.

###########################################################################################
# Command line options
###########################################################################################

optionsFile = None

if "CORTEX_OPTIONS_FILE" in os.environ :
	optionsFile = os.environ["CORTEX_OPTIONS_FILE"]

if "OPTIONS" in ARGUMENTS :
	optionsFile = ARGUMENTS["OPTIONS"]

try :
	o = Variables( optionsFile, ARGUMENTS )
except NameError :
	# fallback for old scons versions
	o = Options( optionsFile, ARGUMENTS )

o.Add(
	"CXX",
	"The C++ compiler.",
	"g++",
)

o.Add(
	"CXXFLAGS",
	"The extra flags to pass to the C++ compiler during compilation.",
	[ "-pipe", "-Wall", "-Werror", "-O2" ]
)

o.Add(
	"CXXSTD",
	"The C++ standard to build against.",
	"c++98",
)

o.Add(
	BoolVariable( "DEBUG", "Make a debug build", False )
)

o.Add(
	"TESTCXXFLAGS",
	"The extra flags to pass to the C++ compiler during compilation of unit tests.",
	[ "-pipe", "-Wall", "-O0" ]
)

o.Add(
	"LINKFLAGS",
	"The extra flags to pass to the linker.",
	[]
)

# TBB options

o.Add(
	"TBB_INCLUDE_PATH",
	"The path to the tbb include directory.",
	"/usr/local/include/tbb",
)

o.Add(
	"TBB_LIB_PATH",
	"The path to the tbb library directory.",
	"/usr/local/lib",
)

o.Add(
	"TBB_LIB_SUFFIX",
	"The suffix appended to the names of the tbb libraries. You can modify this "
	"to link against libraries installed with non-defalt names.",
	"",
)

# Boost options

o.Add(
	"BOOST_INCLUDE_PATH",
	"The path to the boost include directory.",
	"/usr/include",
)

o.Add(
	"BOOST_LIB_PATH",
	"The path to the boost library directory.",
	"/usr/lib",
)

o.Add(
	"BOOST_LIB_SUFFIX",
	"The suffix appended to the names of the boost libraries. You can modify this "
	"to link against the debug versions of the libraries, or to link against "
	"unversioned libraries.",
	"-${BOOST_MAJOR_VERSION}_${BOOST_MINOR_VERSION}_${BOOST_PATCH_VERSION}",
)

# OpenEXR options

o.Add(
	"OPENEXR_INCLUDE_PATH",
	"The path to the OpenEXR include directory.",
	"/usr/include/OpenEXR",
)

o.Add(
	"OPENEXR_LIB_PATH",
	"The path to the OpenEXR lib directory.",
	"/usr/lib",
)

o.Add(
	"ILMBASE_INCLUDE_PATH",
	"The path to the IlmBase include directory.",
	"$OPENEXR_INCLUDE_PATH",
)

o.Add(
	"ILMBASE_LIB_PATH",
	"The path to the IlmBase lib directory.",
	"$OPENEXR_LIB_PATH",
)

o.Add(
	"OPENEXR_LIB_SUFFIX",
	"The suffix appended to the names of the OpenEXR libraries. You can modify this "
	"to link against libraries installed with non-default names",
	"",
)

# JPEG options

o.Add(
	"JPEG_INCLUDE_PATH",
	"The path to the JPEG include directory.",
	"/usr/local/include/",
)

o.Add(
	"JPEG_LIB_PATH",
	"The path to the JPEG lib directory.",
	"/usr/local/lib",
)

# PNG options

o.Add(
	"PNG_INCLUDE_PATH",
	"The path to the PNG include directory.",
	"/usr/local/include/",
)

o.Add(
	"PNG_LIB_PATH",
	"The path to the PNG lib directory.",
	"/usr/local/lib",
)

o.Add(
	"PNG_LIB_SUFFIX",
	"The suffix appended to the names of libpng. You can modify this "
	"to link against libraries installed with non-default names",
	"",
)

# TIFF options

o.Add(
	"TIFF_INCLUDE_PATH",
	"The path to the TIFF include directory.",
	"/usr/local/include/",
)

o.Add(
	"TIFF_LIB_PATH",
	"The path to the TIFF lib directory.",
	"/usr/local/lib",
)

# Freetype options

o.Add(
	"FREETYPE_INCLUDE_PATH",
	"The path to the FreeType include directory.",
	"/usr/include/freetype2",
)

o.Add(
	"FREETYPE_LIB_PATH",
	"The path to the FreeType lib directory.",
	"/usr/local/lib",
)

# OSL options

o.Add(
	"OSL_INCLUDE_PATH",
	"The path to the OpenShadingLanguage include directory.",
	"/usr/include",
)

o.Add(
	"OSL_LIB_PATH",
	"The path to the OpenShadingLanguage library directory.",
	"/usr/lib",
)

# OIIO options

o.Add(
	"OIIO_INCLUDE_PATH",
	"The path to the OpenImageIO include directory.",
	"/usr/include",
)

o.Add(
	"OIIO_LIB_PATH",
	"The path to the OpenImageIO library directory.",
	"/usr/lib",
)

# General path options

o.Add(
	"CPPPATH",
	"A colon separated list of paths to search for headers on.",
	"",
)

o.Add(
	"LIBPATH",
	"A colon separated list of paths to search for libraries on.",
	"/usr/lib",
)


# Python options

o.Add(
	"PYTHON_CONFIG",
	"The path to the python-config program for the Python installation you wish to "
	"build against. This is used to automatically obtain the appropriate compilation and linking "
	"flags, unless you override them with the other PYTHON_ flags. "
	"The default is to look for python-config on the path.",
	"python-config",""
)

o.Add(
	"PYTHON",
	"The path to the python executable. If unspecified this will be discovered automatically using PYTHON_CONFIG.",
	""
)

o.Add(
	"PYTHON_INCLUDE_PATH",
	"The path to the python headers. If unspecified this will be discovered automatically using PYTHON_CONFIG.",
	"",
)

o.Add(
	"PYTHON_LINK_FLAGS",
	"Flags to use when linking python modules. If unspecified this will be discovered automatically using PYTHON_CONFIG.",
	""
)

# Renderman options

o.Add(
	"RMAN_ROOT",
	"The directory in which your RenderMan renderer is installed.",
	"/usr/local/bin",
)

# Nuke options

o.Add(
	"NUKE_ROOT",
	"The directory in which Nuke is installed.",
	"/usr/local/foundry/nuke"
)

o.Add(
	"NUKE_LICENSE_FILE",
	"The path to the FlexLM license file to use for Nuke. This is necessary to run the tests.",
	"/usr/local/foundry/FLEXlm",
)

# Truelight options

o.Add(
	"TRUELIGHT_ROOT",
	"The directory in which Truelight is installed.",
	"/usr/fl/truelight"
)

# OpenGL options

try :
	o.Add(
		BoolVariable( "WITH_GL", "Set this to build the IECoreGL library.", False ),
	)
except NameError :
	# fallback for old scons versions
	o.Add(
		BoolOption( "WITH_GL", "Set this to build the IECoreGL library.", False ),
	)

o.Add(
	"GLEW_INCLUDE_PATH",
	"The path to the directory with glew.h in it.",
	"/usr/local/include/GL",
)

o.Add(
	"GLEW_LIB_PATH",
	"The path to the directory with libGLEW in it.",
	"/usr/local/lib",
)

o.Add(
	"GLEW_LIB_SUFFIX",
	"The suffix appended to the names of the GLEW library. You can modify this "
	"to link against libraries installed with non-defalt names.",
	"",
)

# Maya options

o.Add(
	"MAYA_ROOT",
	"The path to the root of the maya installation.",
	"/usr/aw/maya",
)

o.Add(
	"MAYA_LICENSE_FILE",
	"The path to FlexLM license file to use for Maya.",
	"/usr/flexlm/license.dat",
)

o.Add(
	"MAYA_ADLM_ENV_FILE",
	"The path to ADLM env xml file to use as of Maya 2010.",
	"/usr/adlm/AdlmThinClientCustomEnv.xml",
)

try :
	o.Add(
		BoolVariable(
			"WITH_MAYA_PLUGIN_LOADER",
			"Set this to install the Maya plugin with a stub loader.",
			 False
		),
	)
except NameError :
	# fallback for old scons versions
	o.Add(
		BoolOption(
			"WITH_MAYA_PLUGIN_LOADER",
			"Set this to install the Maya plugin with a stub loader.",
			 False
		),
	)

# Houdini options

o.Add(
	"HOUDINI_ROOT",
	"The path to the Houdini install.",
	os.environ.get( "HFS", "" ),
)

o.Add(
	"HOUDINI_INCLUDE_PATH",
	"The path to the Houdini include directory.",
	"$HOUDINI_ROOT/toolkit/include",
)

o.Add(
	"HOUDINI_LIB_PATH",
	"The path to the houdini lib directory.",
	"$HOUDINI_ROOT/dsolib",
)

o.Add(
	"HOUDINI_BIN_PATH",
	"The path to the houdini lib directory.",
	"$HOUDINI_ROOT/bin",
)

o.Add(
	"HOUDINI_CXX_FLAGS",
	"C++ Flags to pass to the Houdini compilation.",
	"",
)

o.Add(
	"HOUDINI_LINK_FLAGS",
	"Flags to pass to the Houdini linker.",
	"",
)

o.Add(
	BoolVariable("WITH_MANTRA", "Set this to build the mantra procedural", False),
)

# Arnold options

o.Add(
	"ARNOLD_ROOT",
	"The directory in which Arnold is installed.",
	"/usr/local",
)

o.Add(
	"MTOA_ROOT",
	"The directory in which MtoA is installed.",
	"/usr/local",
)

o.Add(
	"MTOA_SOURCE_ROOT",
	"The directory in which the MtoA source is installed.",
	"/usr/local",
)

# Alembic options

o.Add(
	"ALEMBIC_INCLUDE_PATH",
	"The path to the Alembic include directory.",
	"/usr/local/include",
)

o.Add(
	"ALEMBIC_LIB_PATH",
	"The path to the Alembic lib directory.",
	"/usr/local/lib",
)

o.Add(
	"ALEMBIC_LIB_SUFFIX",
	"The suffix appended to the names of the Alembic libraries. You can modify this "
	"to link against libraries installed with non-default names",
	"",
)

o.Add(
	"HDF5_INCLUDE_PATH",
	"The path to the hdf5 include directory.",
	"/usr/local/include",
)

o.Add(
	"HDF5_LIB_PATH",
	"The path to the hdf5 lib directory.",
	"/usr/local/lib",
)

o.Add(
	"HDF5_LIB_SUFFIX",
	"The suffix appended to the names of the HDF5 libraries. You can modify this "
	"to link against libraries installed with non-default names",
	"",
)

# appleseed options

o.Add(
	"APPLESEED_INCLUDE_PATH",
	"The path to the appleseed include directory.",
	"/usr/local/appleseed/include",
)

o.Add(
	"APPLESEED_LIB_PATH",
	"The path to the appleseed lib directory.",
	"/usr/local/appleseed/lib",
)

# Build options

o.Add(
	"BUILD_CACHEDIR",
	"Specify a directory for SCons to cache build results in. This allows the sharing of build results"
	"among multiple developers and can significantly reduce build times, particularly when switching"
	"between multiple compilers and build options.",
	""
)

# Environment options

o.Add(
	"ENV_VARS_TO_IMPORT",
	"By default SCons ignores the environment it is run in, to avoid it contaminating the "
	"build process. This can be problematic if some of the environment is critical for "
	"running the applications used during the build. This space separated list of environment "
	"variables is imported to help overcome these problems.",
	"",
)

# Installation options

o.Add(
	"INSTALL_PREFIX",
	"The prefix under which to install things.",
	"/usr/local",
)

o.Add(
	BoolVariable( "INSTALL_PKG_CONFIG_FILE",
				"Install a pkg-config configuration in $INSTALL_PREFIX/lib/pkgconfig.",
				True ),
)

o.Add(
	"INSTALL_HEADER_DIR",
	"The directory in which to install headers.",
	"$INSTALL_PREFIX/include",
)

o.Add(
	"INSTALL_LIB_NAME",
	"The name under which to install the libraries.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_PYTHONLIB_NAME",
	"The name under which to install the python library. This can "
	"be used to build and install the library for multiple python versions.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_MAYALIB_NAME",
	"The name under which to install the maya libraries. This "
	"can be used to build and install the library for multiple "
	"Maya versions.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_NUKELIB_NAME",
	"The name under which to install the nuke libraries. This "
	"can be used to build and install the library for multiple "
	"Nuke versions.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_HOUDINILIB_NAME",
	"The name under which to install the houdini libraries. This "
	"can be used to build and install the library for multiple "
	"Houdini versions.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_MANTRALIB_NAME",
	"The name under which to install the Mantra libraries. This "
	"can be used to build and install the library for multiple "
	"Mantra versions.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_RMANLIB_NAME",
	"The name under which to install the RI libraries. This "
	"can be used to build and install the library for multiple "
	"PRMan/3delight versions.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_ARNOLDLIB_NAME",
	"The name under which to install the Arnold libraries. This "
	"can be used to build and install the library for multiple "
	"Arnold versions.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_ALEMBICLIB_NAME",
	"The name under which to install the Alembic libraries. This "
	"can be used to build and install the library for multiple "
	"Alembic versions.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_APPLESEEDLIB_NAME",
	"The name under which to install the appleseed libraries. This "
	"can be used to build and install the library for multiple "
	"appleseed versions.",
	"$INSTALL_PREFIX/lib/$IECORE_NAME",
)

o.Add(
	"INSTALL_PYTHON_DIR",
	"The directory in which to install python modules.",
	"$INSTALL_PREFIX/lib/python$PYTHON_VERSION/site-packages",
)

o.Add(
	"INSTALL_ARNOLDPYTHON_DIR",
	"The directory in which to install the Arnold python module.",
	"$INSTALL_PYTHON_DIR",
)

o.Add(
	"INSTALL_NUKEPYTHON_DIR",
	"The directory in which to install the nuke python module.",
	"$INSTALL_PREFIX/lib/python$PYTHON_VERSION/site-packages",
)

o.Add(
	"INSTALL_GLSL_HEADER_DIR",
	"The directory in which to install GLSL headers.",
	"$INSTALL_PREFIX/glsl",
)

o.Add(
	"INSTALL_GLSL_SHADER_DIR",
	"The directory in which to install GLSL shaders.",
	"$INSTALL_PREFIX/glsl",
)

o.Add(
	"INSTALL_RMANPROCEDURAL_NAME",
	"The name under which to install the renderman procedurals.",
	"$INSTALL_PREFIX/rmanProcedurals/$IECORE_NAME",
)

o.Add(
	"INSTALL_RMANDISPLAY_NAME",
	"The name under which to install the renderman displays.",
	"$INSTALL_PREFIX/rmanDisplays/$IECORE_NAME",
)

o.Add(
	"INSTALL_RSL_HEADER_DIR",
	"The directory in which to install RSL headers.",
	"$INSTALL_PREFIX/rsl",
)

o.Add(
	"INSTALL_MEL_DIR",
	"The directory in which to install mel scripts.",
	"$INSTALL_PREFIX/maya/mel/$IECORE_NAME",
)

o.Add(
	"INSTALL_HOUDINIOTL_DIR",
	"The directory in which to install houdini otls.",
	"$INSTALL_PREFIX/houdini/otls/",
)

o.Add(
	"INSTALL_HOUDINIICON_DIR",
	"The directory under which to install houdini icons.",
	"$INSTALL_PREFIX/houdini/icons",
)

o.Add(
	"INSTALL_HOUDINITOOLBAR_DIR",
	"The directory under which to install houdini shelf files.",
	"$INSTALL_PREFIX/houdini/toolbar",
)

o.Add(
	"INSTALL_HOUDINIMENU_DIR",
	"The directory under which to install houdini menu files.",
	"$INSTALL_PREFIX/houdini",
)

o.Add(
	"INSTALL_MAYAICON_DIR",
	"The directory under which to install maya icons.",
	"$INSTALL_PREFIX/maya/icons",
)

o.Add(
	"INSTALL_MAYAPLUGIN_NAME",
	"The name under which to install maya plugins.",
	"$INSTALL_PREFIX/maya/plugins/$IECORE_NAME",
)

o.Add(
	"INSTALL_HOUDINIPLUGIN_NAME",
	"The name under which to install houdini plugins.",
	"$INSTALL_PREFIX/houdini/dso/$IECORE_NAME",
)

o.Add(
	"INSTALL_MANTRAPROCEDURAL_NAME",
	"",
	"$INSTALL_PREFIX/houdini/dso/mantra/$IECORE_NAME",
)

o.Add(
	"INSTALL_NUKEPLUGIN_NAME",
	"The name under which to install nuke plugins.",
	"$INSTALL_PREFIX/nuke/plugins/$IECORE_NAME",
)

o.Add(
	"INSTALL_ARNOLDPROCEDURAL_NAME",
	"The name under which to install the arnold procedurals.",
	"$INSTALL_PREFIX/arnoldProcedurals/$IECORE_NAME",
)

o.Add(
	"INSTALL_ARNOLDOUTPUTDRIVER_NAME",
	"The name under which to install the arnold procedurals.",
	"$INSTALL_PREFIX/arnoldOutputDrivers/$IECORE_NAME",
)

o.Add(
	"INSTALL_MTOAEXTENSION_NAME",
	"The name under which to install MtoA extensions.",
	"$INSTALL_PREFIX/mtoaExtensions/$IECORE_NAME",
)

o.Add(
	"INSTALL_APPLESEEDOUTPUTDRIVER_NAME",
	"The name under which to install the appleseed output driver.",
	"$INSTALL_PREFIX/appleseedDisplays/$IECORE_NAME",
)

o.Add(
	"INSTALL_DOC_DIR",
	"The directory in which to install the documentation.",
	"$INSTALL_PREFIX/share/cortex",
)

o.Add(
	"INSTALL_IECORE_OP_PATH",
	"The directory in which to install the IECore op stubs.",
	"$INSTALL_PREFIX/ops/$IECORE_NAME-1.py",
)

o.Add(
	"INSTALL_IECORE_OPS",
	"The IECore C++ ops to install via python stubs.",
	[
		( "IECore.SequenceLsOp", "common/fileSystem/seqLs" ),
		( "IECore.SequenceCpOp", "common/fileSystem/seqCp" ),
		( "IECore.SequenceMvOp", "common/fileSystem/seqMv" ),
		( "IECore.SequenceRmOp", "common/fileSystem/Rm" ),
		( "IECore.SequenceRenumberOp", "common/fileSystem/seqRenumber" ),
		( "IECore.SequenceConvertOp", "common/fileSystem/seqConvert" ),
		( "IECore.SequenceCatOp", "common/fileSystem/seqCat" ),
		( "IECore.RemovePrimitiveVariables", "common/primitive/removeVariables" ),
		( "IECore.RenamePrimitiveVariables", "common/primitive/renameVariables" ),
		( "IECore.PointsExpressionOp", "common/primitive/pointsExpression" ),
		( "IECore.ClassLsOp", "common/classes/classLs" ),
		( "IECore.LsHeaderOp", "common/fileSystem/lsHeader" ),
		( "IECore.SearchReplaceOp", "common/fileSystem/searchReplace" ),
		( "IECore.CheckImagesOp", "common/fileSystem/checkImages" ),
		( "IECore.FileSequenceGraphOp", "common/fileSystem/fileSequenceGraph" ),
		( "IECore.TriangulateOp", "common/primitive/mesh/triangulate" ),
		( "IECore.MeshNormalsOp", "common/primitive/mesh/addNormals" ),
		( "IECore.MeshTangentsOp", "common/primitive/mesh/addTangents" ),
		( "IECore.MeshMergeOp", "common/primitive/mesh/merge" ),
		( "IECore.MeshVertexReorderOp", "common/primitive/mesh/vertexReorder" ),
		( "IECore.MeshPrimitiveShrinkWrapOp", "common/primitive/mesh/shrinkWrap" ),
		( "IECore.MeshDistortionsOp", "common/primitive/mesh/calculateDistortions" ),
		( "IECore.PointDistributionOp", "common/primitive/mesh/pointDistribution" ),
		( "IECore.Grade", "common/colorSpace/grade" ),
		( "IECore.CubeColorTransformOp", "common/colorSpace/cubeColorTransform" ),
		( "IECore.CineonToLinearOp", "common/colorSpace/cineonToLinear" ),
		( "IECore.LinearToCineonOp", "common/colorSpace/linearToCineon" ),
		( "IECore.AlexaLogcToLinearOp", "common/colorSpace/alexaLogcToLinear" ),
		( "IECore.LinearToAlexaLogcOp", "common/colorSpace/linearToAlexaLogc" ),
		( "IECore.SRGBToLinearOp", "common/colorSpace/SRGBToLinear" ),
		( "IECore.LinearToSRGBOp", "common/colorSpace/linearToSRGB" ),
		( "IECore.Rec709ToLinearOp", "common/colorSpace/Rec709ToLinear" ),
		( "IECore.LinearToRec709Op", "common/colorSpace/linearToRec709" ),
		( "IECore.PanalogToLinearOp", "common/colorSpace/PanalogToLinear" ),
		( "IECore.LinearToPanalogOp", "common/colorSpace/linearToPanalog" ),
		( "IECore.UVDistortOp", "common/2d/image/uvDistort" ),
		( "IECore.ImageCompositeOp", "common/2d/image/imageComposite" ),
		( "IECore.ImageConvolveOp", "common/2d/image/imageConvolve" ),
		( "IECore.DeepImageConverter", "common/2d/deepImage/convert" ),
		( "IECore.AddSmoothSkinningInfluencesOp", "rigging/smoothSkinning/addInfluences" ),
		( "IECore.RemoveSmoothSkinningInfluencesOp", "rigging/smoothSkinning/removeInfluences" ),
		( "IECore.CompressSmoothSkinningDataOp", "rigging/smoothSkinning/compress" ),
		( "IECore.DecompressSmoothSkinningDataOp", "rigging/smoothSkinning/decompress" ),
		( "IECore.NormalizeSmoothSkinningWeightsOp", "rigging/smoothSkinning/normalizeWeights" ),
		( "IECore.ReorderSmoothSkinningInfluencesOp", "rigging/smoothSkinning/reorderInfluences" ),
		( "IECore.SmoothSmoothSkinningWeightsOp", "rigging/smoothSkinning/smoothWeights" ),
		( "IECore.ContrastSmoothSkinningWeightsOp", "rigging/smoothSkinning/contrastWeights" ),
		( "IECore.LimitSmoothSkinningInfluencesOp", "rigging/smoothSkinning/limitInfluences" ),
		( "IECore.TransferSmoothSkinningWeightsOp", "rigging/smoothSkinning/transferWeights" ),
	]
)

o.Add(
	"INSTALL_IECORE_PROCEDURAL_PATH",
	"The directory in which to install the IECore procedural stubs.",
	"$INSTALL_PREFIX/procedurals/$IECORE_NAME-1.py",
)

o.Add(
	"INSTALL_IECORE_PROCEDURALS",
	"The IECore procedurals to install via python stubs.",
	[
		( "IECore.ReadProcedural", "read" ),
		( "IECore.VisualiserProcedural", "visualiser" ),
	]
)

o.Add(
	"INSTALL_CORE_POST_COMMAND",
	"A command which is run following a successful installation of "
	"the core library. This could be used to customise installation "
	"further for a particular site.",
	""
)

o.Add(
	"INSTALL_CORERI_POST_COMMAND",
	"A command which is run following a successful installation of "
	"the CoreRI library. This could be used to customise installation "
	"further for a particular site.",
	""
)

o.Add(
	"INSTALL_COREGL_POST_COMMAND",
	"A command which is run following a successful installation of "
	"the CoreGL library. This could be used to customise installation "
	"further for a particular site.",
	""
)

o.Add(
	"INSTALL_COREMAYA_POST_COMMAND",
	"A command which is run following a successful installation of "
	"the CoreMaya library. This could be used to customise installation "
	"further for a particular site.",
	""
)

o.Add(
	"INSTALL_CORENUKE_POST_COMMAND",
	"A command which is run following a successful installation of "
	"the CoreNuke library. This could be used to customise installation "
	"further for a particular site.",
	""
)

o.Add(
	"INSTALL_COREHOUDINI_POST_COMMAND",
	"A command which is run following a successful installation of "
	"the CoreHoudini library. This could be used to customise installation "
	"further for a particular site.",
	""
)

o.Add(
	"INSTALL_CORETRUELIGHT_POST_COMMAND",
	"A command which is run following a successful installation of "
	"the CoreTruelight library. This could be used to customise installation "
	"further for a particular site.",
	""
)

# Test options

o.Add(
	"TEST_CORE_SCRIPT",
	"The python script to run for the core tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"test/IECore/All.py"
)

o.Add(
	"TEST_RI_SCRIPT",
	"The python script to run for the renderman tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"test/IECoreRI/All.py"
)

o.Add(
	"TEST_GL_SCRIPT",
	"The python script to run for the OpenGL tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"test/IECoreGL/All.py"
)

o.Add(
	"TEST_TRUELIGHT_SCRIPT",
	"The python script to run for the Truelight tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"test/IECoreTruelight/All.py"
)

o.Add(
	"TEST_MAYA_SCRIPT",
	"The python script to run for the maya tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"test/IECoreMaya/All.py"
)

o.Add(
	"TEST_HOUDINI_SCRIPT",
	"The python script to run for the houdini tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"test/IECoreHoudini/All.py"
)

o.Add(
	"TEST_MANTRA_SCRIPT",
	"The python script to run for the houdini tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"contrib/IECoreMantra/test/IECoreMantra/All.py"
)

o.Add(
	"TEST_NUKE_SCRIPT",
	"The python script to run for the nuke tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"test/IECoreNuke/All.py"
)

o.Add(
	"TEST_ARNOLD_SCRIPT",
	"The python script to run for the arnold tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"contrib/IECoreArnold/test/IECoreArnold/All.py"
)

o.Add(
	"TEST_ALEMBIC_SCRIPT",
	"The python script to run for the alembic tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"contrib/IECoreAlembic/test/IECoreAlembic/All.py"
)

o.Add(
	"TEST_APPLESEED_SCRIPT",
	"The python script to run for the appleseed tests. The default will run all the tests, "
	"but it can be useful to override this to run just the test for the functionality "
	"you're working on.",
	"contrib/IECoreAppleseed/test/IECoreAppleseed/All.py"
)

o.Add(
	"TEST_LIBPATH",
	"Additional colon separated paths to be prepended to the library path"
	"used when running tests.",
	""
)

if Environment()["PLATFORM"]=="darwin" :
	libraryPathEnvVar = "DYLD_LIBRARY_PATH"
else :
	libraryPathEnvVar = "LD_LIBRARY_PATH"

o.Add(
	"TEST_LIBRARY_PATH_ENV_VAR",
	"This is a curious one, probably only ever necessary at image engine. It "
	"specifies the name of an environment variable used to specify the library "
	"search paths correctly when running the tests. Defaults to LD_LIBRARY_PATH on "
	"Linux and DYLD_LIBRARY_PATH on OSX.",
	libraryPathEnvVar
)

# Documentation options

o.Add(
	"DOXYGEN",
	"The path to the doxygen binary.",
	"doxygen"
)

###########################################################################################
# An environment for building libraries
###########################################################################################

env = Environment(
	options = o
)

if isinstance( env["LIBPATH"], basestring ) :
	env["LIBPATH"] = env["LIBPATH"].split( ":" )

for e in env["ENV_VARS_TO_IMPORT"].split() :
	if e in os.environ :
		env["ENV"][e] = os.environ[e]

if "SAVE_OPTIONS" in ARGUMENTS :
	o.Save( ARGUMENTS["SAVE_OPTIONS"], env )

if env["BUILD_CACHEDIR"] != "" :
	CacheDir( env["BUILD_CACHEDIR"] )

env["IECORE_MAJOR_VERSION"] = ieCoreMajorVersion
env["IECORE_MINOR_VERSION"] = ieCoreMinorVersion
env["IECORE_PATCH_VERSION"] = ieCorePatchVersion
env["IECORE_VERSION_SUFFIX"] = ieCoreVersionSuffix
env["IECORE_MAJORMINOR_VERSION"] = "${IECORE_MAJOR_VERSION}.${IECORE_MINOR_VERSION}"
env["IECORE_MAJORMINORPATCH_VERSION"] = "${IECORE_MAJOR_VERSION}.${IECORE_MINOR_VERSION}.${IECORE_PATCH_VERSION}"
if ieCoreVersionSuffix :
	env["IECORE_MAJORMINORPATCH_VERSION"] += "-${IECORE_VERSION_SUFFIX}"

env.Append(
	CPPFLAGS = [
		"-DIE_CORE_MAJORVERSION=$IECORE_MAJOR_VERSION",
		"-DIE_CORE_MINORVERSION=$IECORE_MINOR_VERSION",
		"-DIE_CORE_PATCHVERSION=$IECORE_PATCH_VERSION",
		"-DBOOST_FILESYSTEM_VERSION=3",
	]
)

# update the include and lib paths
dependencyIncludes = [
	"-isystem", "$TBB_INCLUDE_PATH",
	"-isystem", "$BOOST_INCLUDE_PATH",
	"-isystem", "$OPENEXR_INCLUDE_PATH",
	"-isystem", "$ILMBASE_INCLUDE_PATH",
	# we use "OpenEXR/x.h" and they use "x.h"
	"-isystem", os.path.join( "$OPENEXR_INCLUDE_PATH","OpenEXR" ),
	"-isystem", os.path.join( "$ILMBASE_INCLUDE_PATH","OpenEXR" ),
	"-isystem", "$PNG_INCLUDE_PATH",
	"-isystem", "$JPEG_INCLUDE_PATH",
	"-isystem", "$TIFF_INCLUDE_PATH",
	"-isystem", "$FREETYPE_INCLUDE_PATH",
]

env.Prepend(
	CXXFLAGS = dependencyIncludes,
	CPPPATH = [
		"include",
	],
	LIBPATH = [
		"./lib",
		"$TBB_LIB_PATH",
		"$BOOST_LIB_PATH",
		"$OPENEXR_LIB_PATH",
		"$ILMBASE_LIB_PATH",
		"$PNG_LIB_PATH",
		"$JPEG_LIB_PATH",
		"$TIFF_LIB_PATH",
		"$FREETYPE_LIB_PATH",
	],
	LIBS = [
		"pthread",
	]
)

if env["PLATFORM"]=="darwin" :
	# necessary to fix errors from boost/numeric/interval.hpp
	env.Append( CXXFLAGS = [ "-D__USE_ISOC99" ] )
	# os x versions before snow leopard require the no-long-double flag
	compilerVersion = map( int, env["CXXVERSION"].split( "." ) )
	if compilerVersion[0] < 4 or compilerVersion[0]==4 and compilerVersion[1] < 2 :
		env.Append( CXXFLAGS = "-Wno-long-double" )
	osxVersion = [ int( v ) for v in platform.mac_ver()[0].split( "." ) ]
	# Work around problem with unused local typedefs in boost and
	# deprecation of gluBuild2DMipmaps() in OSX 10.9.
	if osxVersion[0] == 10 and osxVersion[1] > 7 :
		env.Append( CXXFLAGS = [ "-Wno-unused-local-typedef", "-Wno-deprecated-declarations" ] )

env.Append( CXXFLAGS = [ "-std=$CXXSTD" ] )

if env["DEBUG"] :
	env.Append( CXXFLAGS = [ "-g" ] )
else :
	env.Append( CXXFLAGS = [ "-DNDEBUG", "-DBOOST_DISABLE_ASSERTS" ] )

# autoconf-like checks for stuff.
# this part of scons doesn't seem so well thought out.

# unlike the rest of the scons build process, the configure stuff
# runs immediately. we don't want to run it in a few cases, as failures
# would mean that people don't get to do what they're actually trying to do
doConfigure = not "--help" in sys.argv and not "-h" in sys.argv and not env.GetOption( "clean" )

if doConfigure :

	c = Configure( env )

	if not c.CheckHeader( "boost/version.hpp", "\"\"", "C++" ) :
		sys.stderr.write( "ERROR : unable to find the boost headers, check BOOST_INCLUDE_PATH.\n" )
		Exit( 1 )

	# figure out the boost version in use so we can append it to the
	# library names	if necessary
	boostVersion = None
	boostVersionHeader = env.FindFile( "boost/version.hpp", env["CXXFLAGS"] )
	if (boostVersionHeader ==None):
		sys.stderr.write( "ERROR : unable to find the boost headers, check BOOST_INCLUDE_PATH.\n" )
		Exit( 1 )

	for line in open( str( boostVersionHeader ) ) :
		m = re.compile( "^#define BOOST_LIB_VERSION \"(.*)\"\s*$" ).match( line )
		if m  :
			boostVersion = m.group( 1 )
		if boostVersion :
			m = re.compile( "^([0-9]+)_([0-9]+)(?:_([0-9]+)|)$" ).match( boostVersion )
			boostMajorVersion, boostMinorVersion, boostPatchVersion = m.group( 1, 2, 3 )
			env["BOOST_MAJOR_VERSION"] = boostMajorVersion
			env["BOOST_MINOR_VERSION"] = boostMinorVersion
			env["BOOST_PATCH_VERSION"] = boostPatchVersion or ""
			break

	if not boostVersion :
		sys.stderr.write( "ERROR : unable to determine boost version from \"%s\".\n" % boostVersionHeader )
		Exit( 1 )

	env.Append( LIBS = [
			"boost_filesystem" + env["BOOST_LIB_SUFFIX"],
			"boost_regex" + env["BOOST_LIB_SUFFIX"],
			"boost_iostreams" + env["BOOST_LIB_SUFFIX"],
			"boost_date_time" + env["BOOST_LIB_SUFFIX"],
			"boost_thread" + env["BOOST_LIB_SUFFIX"],
			"boost_wave" + env["BOOST_LIB_SUFFIX"],
		]
	)
	if int( env["BOOST_MINOR_VERSION"] ) >=35 :
		env.Append( LIBS = [ "boost_system" + env["BOOST_LIB_SUFFIX"] ] )

	if int( env["BOOST_MINOR_VERSION"] ) >=55 :
		env.Append( CXXFLAGS = [ "-DBOOST_SIGNALS_NO_DEPRECATION_WARNING" ] )

	if not c.CheckLibWithHeader( env.subst( "boost_iostreams" + env["BOOST_LIB_SUFFIX"] ), "boost/iostreams/chain.hpp", "CXX" ) :
		sys.stderr.write( "ERROR : unable to find the boost libraries - check BOOST_LIB_PATH.\n" )
		Exit( 1 )

	if not c.CheckLibWithHeader( "Iex" + env["OPENEXR_LIB_SUFFIX"], "OpenEXR/ImfInputFile.h", "C++" ) :
		sys.stderr.write( "ERROR : unable to find the OpenEXR libraries - check OPENEXR_INCLUDE_PATH and OPENEXR_LIB_PATH.\n" )
		Exit( 1 )

	if not c.CheckLibWithHeader( "tbb" + env["TBB_LIB_SUFFIX"], "tbb/tbb.h", "C++" ) :
		sys.stderr.write( "ERROR : unable to find the TBB libraries - check TBB_INCLUDE_PATH and TBB_LIB_PATH.\n" )
		Exit( 1 )

	c.Finish()

env.Append( LIBS = [
		"Half" + env["OPENEXR_LIB_SUFFIX"],
		"Iex" + env["OPENEXR_LIB_SUFFIX"],
		"Imath" + env["OPENEXR_LIB_SUFFIX"],
		"IlmImf" + env["OPENEXR_LIB_SUFFIX"],
		"IlmThread" + env["OPENEXR_LIB_SUFFIX"],
		"z",
	]
)

Help( o.GenerateHelpText( env ) )

###########################################################################################
# An environment for building python modules
###########################################################################################

def getPythonConfig( env, flags ) :

	f = subprocess.Popen( env["PYTHON_CONFIG"] + " " + flags, env=env["ENV"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True )
	stdOut, stdErr = f.communicate()
	r = stdOut.strip()
	if f.returncode :
		sys.stderr.write( "ERROR : Error running \"%s\".\n%s" % ( env["PYTHON_CONFIG"], stdErr ) )
		Exit( 1 )
	return r

pythonEnv = env.Clone()

# decide where python is
if pythonEnv["PYTHON"]=="" :
	pythonEnv["PYTHON"] = getPythonConfig( pythonEnv, "--exec-prefix" ) + "/bin/python"

# try to run it to determine version
pythonExecutable = pythonEnv["PYTHON"]
try :
	pythonEnv["PYTHON_VERSION"] = os.popen( pythonExecutable + " -c 'import sys; print \"%s.%s\" % sys.version_info[:2]'" ).read().strip()
except :
	sys.stderr.write( "ERROR : Unable to determine python version from \"%s\".\n" % pythonExecutable )
	Exit( 1 )

# get the include path for python if we haven't been told it explicitly
if pythonEnv["PYTHON_INCLUDE_PATH"]=="" :
	pythonEnv["PYTHON_INCLUDE_FLAGS"] = getPythonConfig( pythonEnv, "--includes" ).split()
else :
	pythonEnv["PYTHON_INCLUDE_FLAGS"] = [ "-isystem", "$PYTHON_INCLUDE_PATH" ]
pythonEnv.Append( CXXFLAGS = "$PYTHON_INCLUDE_FLAGS" )

if env["PLATFORM"] == "posix" :
	## We really want to not have the -Wno-strict-aliasing flag, but it's necessary to stop boost
	# python warnings that don't seem to be prevented by including boost via -isystem even. Better to
	# be able to have -Werror but be missing one warning than to have no -Werror.
	## \todo This is probably only necessary for specific gcc versions where -isystem doesn't
	# fully work. Reenable when we encounter versions that work correctly.
	pythonEnv.Append( CXXFLAGS = [ "-Wno-strict-aliasing" ] )

# get the python link flags
if pythonEnv["PYTHON_LINK_FLAGS"]=="" :
	pythonEnv["PYTHON_LINK_FLAGS"] = getPythonConfig( pythonEnv, "--ldflags" )
	pythonEnv["PYTHON_LINK_FLAGS"] = pythonEnv["PYTHON_LINK_FLAGS"].replace( "Python.framework/Versions/" + pythonEnv["PYTHON_VERSION"] + "/Python", "" )

pythonEnv.Append( SHLINKFLAGS = pythonEnv["PYTHON_LINK_FLAGS"].split() )

pythonEnv.Append( CPPFLAGS = "-DBOOST_PYTHON_MAX_ARITY=20" )
pythonEnv.Append( LIBS = [
		"boost_python" + pythonEnv["BOOST_LIB_SUFFIX"],
	]
)

pythonModuleEnv = pythonEnv.Clone()

pythonModuleEnv["SHLIBPREFIX"] = ""
pythonModuleEnv["SHLIBSUFFIX"] = ".so"

if pythonModuleEnv["PLATFORM"]=="darwin" :
	pythonModuleEnv.Append( SHLINKFLAGS = "-single_module" )

###########################################################################################
# An environment for running tests
###########################################################################################

testEnv = env.Clone()
testEnv.Replace( CXXFLAGS = env.subst("$TESTCXXFLAGS") )
testEnv.Prepend( CXXFLAGS = " ".join( dependencyIncludes ) )

testEnvLibPath = ":".join( testEnv["LIBPATH"] )
if testEnv["TEST_LIBPATH"] != "" :
	testEnvLibPath += ":" + testEnv["TEST_LIBPATH"]
testEnvLibPath = testEnv.subst( testEnvLibPath )

testEnv["ENV"][testEnv["TEST_LIBRARY_PATH_ENV_VAR"]] = testEnvLibPath
testEnv["ENV"][libraryPathEnvVar] = testEnvLibPath
testEnv["ENV"]["IECORE_PROCEDURAL_PATHS"] = "test/IECore/procedurals"
testEnv["ENV"]["IECORE_OP_PATHS"] = "test/IECore/ops"

if env["PLATFORM"]=="darwin" :
	# Special workaround for suspected gcc issue - see BoostUnitTestTest for more information

	# Link to the boost unit test library
	if env.has_key("BOOST_MINOR_VERSION") and env["BOOST_MINOR_VERSION"] >= 35 :
		testEnv.Append( LIBS=["boost_test_exec_monitor" + env["BOOST_LIB_SUFFIX"] ] )
	else:
		testEnv.Append( LIBS=["boost_unit_test_framework" + env["BOOST_LIB_SUFFIX"] ] )

else:
	# Link to the boost unit test library
	testEnv.Append( LIBS=["boost_unit_test_framework" + env["BOOST_LIB_SUFFIX"] ] )

	# Unit test library requirement of boost > 1.35.0
	if env.has_key("BOOST_MINOR_VERSION") and env["BOOST_MINOR_VERSION"] >= 35 :
		testEnv.Append( LIBS=["boost_test_exec_monitor" + env["BOOST_LIB_SUFFIX"] ] )

testEnv["ENV"]["PYTHONPATH"] = "./python"

###########################################################################################
# Helper functions
###########################################################################################

# Makes versioned symlinks for use during installation
def makeSymLinks( env, target ) :

	links = {
		"$IECORE_MAJORMINORPATCH_VERSION" : "$IECORE_MAJORMINOR_VERSION",
		"$IECORE_MAJORMINOR_VERSION" : "$IECORE_MAJOR_VERSION",
		"${IECORE_MAJORMINORPATCH_VERSION}" : "${IECORE_MAJORMINOR_VERSION}",
		"${IECORE_MAJORMINOR_VERSION}" : "${IECORE_MAJOR_VERSION}",
	}

	done = False
	while not done :

		done = True
		for key in links.keys() :

			keyIndex = target.find( key )
			if keyIndex != -1 :

				nextSlashIndex = target.find( "/", keyIndex + len(key) )
				if nextSlashIndex!=-1 :
					# the place where we need to make the links is
					# in the middle of the path somewhere, not in the last
					# component. truncate the path.
					target = target[:nextSlashIndex]

				linkName = target.replace( key, links[key] )

				makeSymLink( env.subst( linkName ), env.subst( target ) )

				target = linkName
				done = False

# Makes versioned symlinks for the library an environment makes.
# This function is necessary as there's some name munging to get
# the right prefix and suffix on the library names.
def makeLibSymLinks( env, libNameVar="INSTALL_LIB_NAME" ) :

	p = env[libNameVar]

	d = os.path.dirname( p )
	n = os.path.basename( p )

	n = "$SHLIBPREFIX" + n + "$SHLIBSUFFIX"
	p = os.path.join( d, n )

	makeSymLinks( env, p )

# Make a symlink pointing from target to source
def makeSymLink( target, source ) :

	commonPrefix = os.path.commonprefix( [ os.path.dirname( target ), os.path.dirname( source ) ] )
	relativeSource = source[len(commonPrefix)+1:]

	if os.path.exists( target ) :
		if os.path.islink( target ) :
			# return if the existing link is exactly what we want already
			if os.path.realpath( target ) == os.path.realpath( source ) :
				return

			os.remove( target )
		else :
			# there's not a good reason for a non-link file to be here
			# so we won't delete it on the grounds that we don't know
			# what's happening
			sys.stderr.write( "Wanted to make a link at \"%s\", but a file exists there - aborting.\n" % target )
			Exit( 1 )

	os.symlink( relativeSource, target )

def readLinesMinusLicense( f ) :

	if isinstance( f, basestring ) :
		f = open( f, "r" )

	result = []
	skippedLicense = False
	for line in f.readlines() :

		if not line.startswith( "#" ) :
			skippedLicense = True
		if skippedLicense :
			result.append( line )

	return result

# Builder action that munges a nicely organised python module into a much less nicely organised one
# that doxygen will understand. Otherwise it puts every class implemented in its own file
# into its own namespace and the docs get mighty confusing.
def createDoxygenPython( target, source, env ) :

	target = str( target[0] )
	source = str( source[0] )

	if not os.path.isdir( target ) :
		os.makedirs( target )

	outFile = open( target + "/__init__.py", "w" )

	for line in readLinesMinusLicense( source ) :

		outFile.write( line )

		if line.startswith( "import" ) :

			# copy source file over to target directory
			words = line.split()
			fileName = os.path.dirname( source ) + "/" + words[1] + ".py"
			if os.path.isfile( fileName ) :
				destFile = open( target + "/" + words[1] + ".py", "w" )
				for l in readLinesMinusLicense( fileName ) :
					destFile.write( l )

		elif line.startswith( "from" ) :

			# cat source file directly into init file
			words = line.split()
			fileName = os.path.dirname( source ) + "/" + words[1] + ".py"
			if os.path.isfile( fileName ) :

				outFile.write( "\n" )

				for line in readLinesMinusLicense( fileName ) :
					outFile.write( line )

				outFile.write( "\n" )

# installs the core/python build configurations to a pkg-config configuration file
def writePkgConfig( env, python_env ):
	global ieCoreMajorVersion, ieCoreMinorVersion, ieCorePatchVersion
	prefix = env.subst( env['INSTALL_PREFIX'] )
	filedir = os.path.join( prefix, 'lib/pkgconfig' )
	if not os.path.exists(filedir):
		os.makedirs(filedir)
	fd = open( os.path.join( filedir, 'cortex.pc' ), 'w' )
	fd.write( "prefix=%s\n" % prefix )
	fd.write( "exec_prefix=${prefix}\n" )
	fd.write( "libdir=${prefix}/lib\n" )
	fd.write( "includedir=%s\n" % env.subst(env['INSTALL_HEADER_DIR']) )
	fd.write( "\n" )
	fd.write( "Name: Cortex\n" )
	fd.write( "Description: Open-source libraries for VFX development.\n" )
	fd.write( "Version: %d.%d.%d\n" % ( ieCoreMajorVersion, ieCoreMinorVersion, ieCorePatchVersion ) )
	corelib = os.path.basename( env.subst("$INSTALL_LIB_NAME") )
	pythonlib = os.path.basename( python_env.subst("$INSTALL_PYTHONLIB_NAME") )
	fd.write( "Libs: -L${libdir} -l%s -l%s -L%s -lboost_python%s\n" % ( corelib,
																	pythonlib,
																	env['BOOST_LIB_PATH'],
																	python_env["BOOST_LIB_SUFFIX"] ) )
	python_includes = python_env.subst("$PYTHON_INCLUDE_FLAGS")
	openexr_includes = "-I%s -I%s/OpenEXR" % (env['OPENEXR_INCLUDE_PATH'],
											env['OPENEXR_INCLUDE_PATH'])
	if env['ILMBASE_INCLUDE_PATH']!=env['OPENEXR_INCLUDE_PATH']:
		openexr_includes = "-I%s -I%s/OpenEXR -I%s -I%s/OpenEXR" % (env['ILMBASE_INCLUDE_PATH'],
																	env['ILMBASE_INCLUDE_PATH'],
																	env['OPENEXR_INCLUDE_PATH'],
																	env['OPENEXR_INCLUDE_PATH'])
	fd.write( "Cflags: -I${includedir} %s -I%s %s\n" % (openexr_includes,
														env['BOOST_INCLUDE_PATH'],
														python_includes ) )
	fd.close()

###########################################################################################
# Build, install and test the core library and bindings
###########################################################################################

coreEnv = env.Clone( IECORE_NAME="IECore" )
corePythonEnv = pythonEnv.Clone( IECORE_NAME="IECorePython" )
corePythonModuleEnv = pythonModuleEnv.Clone( IECORE_NAME="IECore" )
coreTestEnv = testEnv.Clone()

allCoreEnvs = ( coreEnv, corePythonEnv, corePythonModuleEnv, coreTestEnv )

# lists of sources
coreSources = sorted( glob.glob( "src/IECore/*.cpp" ) )
coreHeaders = glob.glob( "include/IECore/*.h" ) + glob.glob( "include/IECore/*.inl" )
corePythonHeaders = glob.glob( "include/IECorePython/*.h" ) + glob.glob( "include/IECorePython/*.inl" )
corePythonSources = sorted( glob.glob( "src/IECorePython/*.cpp" ) )
corePythonModuleSources = sorted( glob.glob( "src/IECorePythonModule/*.cpp" ) )
corePythonScripts = glob.glob( "python/IECore/*.py" )

# configure checks
if doConfigure :

	c = Configure( coreEnv )

	if c.CheckCXXHeader( "boost/asio.hpp" ) :
		for e in allCoreEnvs :
			e.Append( CPPFLAGS = '-DIECORE_WITH_ASIO' )
	else :
		sys.stderr.write( "WARNING: boost/asio.hpp not found, some functionality will be disabled.\n" )
		coreSources.remove( "src/IECore/ClientDisplayDriver.cpp" )
		coreSources.remove( "src/IECore/DisplayDriver.cpp" )
		coreSources.remove( "src/IECore/ImageDisplayDriver.cpp" )
		coreSources.remove( "src/IECore/DisplayDriverServer.cpp" )
		corePythonSources.remove( "src/IECorePython/ClientDisplayDriverBinding.cpp" )
		corePythonSources.remove( "src/IECorePython/DisplayDriverServerBinding.cpp" )
		corePythonSources.remove( "src/IECorePython/DisplayDriverBinding.cpp" )
		corePythonSources.remove( "src/IECorePython/ImageDisplayDriverBinding.cpp" )
		## \todo: OBJReader needs a version of boost::bind that doesn't give warnings when some
		## placeholders aren't bound (which is true of any boost version that includes asio.hpp)
		coreSources.remove( "src/IECore/OBJReader.cpp" )
		corePythonSources.remove( "src/IECorePython/OBJReaderBinding.cpp" )

	if c.CheckLibWithHeader( coreEnv.subst( "boost_signals" + env["BOOST_LIB_SUFFIX"] ), "boost/signal.hpp", "CXX" ) :
		for e in allCoreEnvs :
			e.Append( CPPFLAGS = '-DIECORE_WITH_SIGNALS' )
	else :
		sys.stderr.write( "ERROR : unable to find boost signal library - some functionality will be disabled.\n" )

	if c.CheckCXXHeader( "boost/math/special_functions/factorials.hpp" ) :
		for e in allCoreEnvs :
			e.Append( CPPFLAGS = '-DIECORE_WITH_BOOSTFACTORIAL' )
	else :
		sys.stderr.write( "WARNING: boost/math/special_functions/factorials.hpp not found, some functionality will be disabled.\n" )

	if c.CheckHeader( "OpenEXR/ImfDeepFrameBuffer.h", "\"\"", "C++" ) :
		for e in allCoreEnvs :
			e.Append( CPPFLAGS = '-DIECORE_WITH_DEEPEXR' )
	else :
		coreSources.remove( "src/IECore/EXRDeepImageReader.cpp" )
		corePythonSources.remove( "src/IECorePython/EXRDeepImageReaderBinding.cpp" )
		coreSources.remove( "src/IECore/EXRDeepImageWriter.cpp" )
		corePythonSources.remove( "src/IECorePython/EXRDeepImageWriterBinding.cpp" )

	if c.CheckLibWithHeader( "tiff", "tiff.h", "CXX" ) :
		for e in allCoreEnvs :
			e.Append( CPPFLAGS = '-DIECORE_WITH_TIFF' )
	else :
		sys.stderr.write( "WARNING: no TIFF library found, no TIFF support, check TIFF_INCLUDE_PATH and TIFF_LIB_PATH.\n" )
		coreSources.remove( "src/IECore/TIFFImageWriter.cpp" )
		coreSources.remove( "src/IECore/TIFFImageReader.cpp" )
		coreSources.remove( "src/IECore/ScopedTIFFErrorHandler.cpp" )
		corePythonSources.remove( "src/IECorePython/TIFFImageReaderBinding.cpp" )
		corePythonSources.remove( "src/IECorePython/TIFFImageWriterBinding.cpp" )

	if c.CheckLibWithHeader( "jpeg", ["stdio.h", "jpeglib.h"], "CXX" ) :
		for e in allCoreEnvs :
			e.Append( CPPFLAGS = '-DIECORE_WITH_JPEG' )
	else :
		sys.stderr.write( "WARNING: no JPEG library found, no JPEG support, check JPEG_INCLUDE_PATH and JPEG_LIB_PATH.\n" )
		coreSources.remove( "src/IECore/JPEGImageWriter.cpp" )
		coreSources.remove( "src/IECore/JPEGImageReader.cpp" )
		corePythonSources.remove( "src/IECorePython/JPEGImageReaderBinding.cpp" )
		corePythonSources.remove( "src/IECorePython/JPEGImageWriterBinding.cpp" )

	if c.CheckLibWithHeader( "png" + env["PNG_LIB_SUFFIX"], ["stdio.h", "png.h"], "CXX" ) :
		for e in allCoreEnvs :
			e.Append( CPPFLAGS = '-DIECORE_WITH_PNG' )
	else :
		sys.stderr.write( "WARNING: no PNG library found, no PNG support, check PNG_INCLUDE_PATH and PNG_LIB_PATH.\n" )
		coreSources.remove( "src/IECore/PNGImageReader.cpp" )
		corePythonSources.remove( "src/IECorePython/PNGImageReaderBinding.cpp" )

	if c.CheckLibWithHeader( "freetype", ["ft2build.h"], "CXX" ) :
		for e in allCoreEnvs :
			e.Append( CPPFLAGS = "-DIECORE_WITH_FREETYPE" )
	else :
		sys.stderr.write( "WARNING: no FreeType library found, no font support, check FREETYPE_INCLUDE_PATH and FREETYPE_LIB_PATH.\n" )
		coreSources.remove( "src/IECore/Font.cpp" )
		corePythonSources.remove( "src/IECorePython/FontBinding.cpp" )

	c.Finish()

# library
coreLibrary = coreEnv.SharedLibrary( "lib/" + os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ), coreSources )
coreLibraryInstall = coreEnv.Install( os.path.dirname( coreEnv.subst( "$INSTALL_LIB_NAME" ) ), coreLibrary )
coreEnv.NoCache( coreLibraryInstall )
coreEnv.AddPostAction( coreLibraryInstall, lambda target, source, env : makeLibSymLinks( coreEnv ) )
coreEnv.Alias( "install", [ coreLibraryInstall ] )
coreEnv.Alias( "installCore", [ coreLibraryInstall ] )
coreEnv.Alias( "installLib", [ coreLibraryInstall ] )

# headers
headerInstall = coreEnv.Install( "$INSTALL_HEADER_DIR/IECore", coreHeaders )
coreEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECore", lambda target, source, env : makeSymLinks( coreEnv, coreEnv["INSTALL_HEADER_DIR"] ) )
if env["INSTALL_PKG_CONFIG_FILE"]:
        coreEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECore", lambda target, source, env : writePkgConfig( coreEnv, corePythonEnv ) )
coreEnv.Alias( "install", headerInstall )
coreEnv.Alias( "installCore", headerInstall )

# python library
corePythonEnv.Append( LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ) )
corePythonLibrary = corePythonEnv.SharedLibrary( "lib/" + os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ), corePythonSources )
corePythonLibraryInstall = corePythonEnv.Install( os.path.dirname( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ), corePythonLibrary )
corePythonEnv.NoCache( corePythonLibraryInstall )
corePythonEnv.AddPostAction( corePythonLibraryInstall, lambda target, source, env : makeLibSymLinks( corePythonEnv, libNameVar="INSTALL_PYTHONLIB_NAME" ) )
corePythonEnv.Alias( "install", [ corePythonLibraryInstall ] )
corePythonEnv.Alias( "installCore", [ corePythonLibraryInstall ] )
corePythonEnv.Alias( "installLib", [ corePythonLibraryInstall ] )

# python headers
pythonHeaderInstall = coreEnv.Install( "$INSTALL_HEADER_DIR/IECorePython", corePythonHeaders )
coreEnv.Alias( "install", pythonHeaderInstall )
coreEnv.Alias( "installCore", pythonHeaderInstall )

# python module
corePythonModuleEnv.Append( LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ) )
corePythonModuleEnv.Append( LIBS = os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ) )
corePythonModule = corePythonModuleEnv.SharedLibrary( "python/IECore/_IECore", corePythonModuleSources )
corePythonModuleEnv.Depends( corePythonModule, coreLibrary )
corePythonModuleEnv.Depends( corePythonModule, corePythonLibrary )

corePythonModuleInstall = corePythonModuleEnv.Install( "$INSTALL_PYTHON_DIR/IECore", corePythonScripts + corePythonModule )
corePythonModuleEnv.AddPostAction( "$INSTALL_PYTHON_DIR/IECore", lambda target, source, env : makeSymLinks( corePythonEnv, corePythonEnv["INSTALL_PYTHON_DIR"] ) )
corePythonModuleEnv.Alias( "install", corePythonModuleInstall )
corePythonModuleEnv.Alias( "installCore", corePythonModuleInstall )

# stubs
for classes, installPath in ( ( env['INSTALL_IECORE_OPS'], "$INSTALL_IECORE_OP_PATH" ), ( env["INSTALL_IECORE_PROCEDURALS"], "$INSTALL_IECORE_PROCEDURAL_PATH" ) ) :
	for cls in classes :
		stubName = os.path.basename( cls[1] )
		stubEnv = corePythonModuleEnv.Clone( IECORE_NAME=os.path.join( cls[1], stubName ) )
		stubInstall = stubEnv.Command( installPath, None, 'echo "from %s import %s as %s" > $TARGET' % ( cls[0].rpartition( "." )[0], cls[0].rpartition( "." )[-1], stubName ) )
		# this switch is to avoid an issue with the lamda post actions baking args incorrectly.
		if installPath == "$INSTALL_IECORE_OP_PATH" :
			stubEnv.AddPostAction( stubInstall, lambda target, source, env : makeSymLinks( env, env["INSTALL_IECORE_OP_PATH"] ) )
		elif installPath == "$INSTALL_IECORE_PROCEDURAL_PATH" :
			stubEnv.AddPostAction( stubInstall, lambda target, source, env : makeSymLinks( env, env["INSTALL_IECORE_PROCEDURAL_PATH"] ) )
		stubEnv.Alias( "install", stubInstall )
		stubEnv.Alias( "installCore", stubInstall )
		stubEnv.Alias( "installStubs", stubInstall )

Default( coreLibrary, corePythonLibrary, corePythonModule )

# post installation script

if coreEnv["INSTALL_CORE_POST_COMMAND"]!="" :
	# this is the only way we could find to get a post action to run for an alias
	corePythonEnv.Alias( "install", corePythonModuleInstall, "$INSTALL_CORE_POST_COMMAND" )
	corePythonEnv.Alias( "installCore", corePythonModuleInstall, "$INSTALL_CORE_POST_COMMAND" )

# testing

coreTestEnv.Append(
	LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
	CPPPATH = [ "test/IECore" ],
)

coreTestSources = glob.glob( "test/IECore/*.cpp" )
if '-DIECORE_WITH_BOOSTFACTORIAL' not in coreTestEnv['CPPFLAGS'] :
	coreTestSources.remove( "test/IECore/LevenbergMarquardtTest.cpp" )

coreTestProgram = coreTestEnv.Program( "test/IECore/IECoreTest", coreTestSources )

coreTest = coreTestEnv.Command( "test/IECore/results.txt", coreTestProgram, "test/IECore/IECoreTest > test/IECore/results.txt 2>&1" )
NoCache( coreTest )
coreTestEnv.Alias( "testCore", coreTest )

corePythonTest = coreTestEnv.Command( "test/IECore/resultsPython.txt", corePythonModule, pythonExecutable + " $TEST_CORE_SCRIPT" )
coreTestEnv.Depends( corePythonTest, glob.glob( "test/IECore/*.py" ) )
NoCache( corePythonTest )
coreTestEnv.Alias( "testCorePython", corePythonTest )

###########################################################################################
# Build, install and test the coreRI library and bindings
###########################################################################################

riEnv = coreEnv.Clone( IECORE_NAME = "IECoreRI" )
riEnv.Append( CXXFLAGS = [ "-isystem", "$RMAN_ROOT/include" ] )
riEnv.Append( LIBPATH = [ "$RMAN_ROOT/lib" ] )

riPythonModuleEnv = pythonModuleEnv.Clone( IECORE_NAME = "IECoreRI" )
riPythonModuleEnv.Append( CXXFLAGS = [ "-isystem", "$RMAN_ROOT/include" ] )
riPythonModuleEnv.Append( LIBPATH = [ "$RMAN_ROOT/lib" ] )

riPythonProceduralEnv = riPythonModuleEnv.Clone( IECORE_NAME = "iePython", SHLIBSUFFIX=env["SHLIBSUFFIX"] )

riDisplayDriverEnv = riEnv.Clone( IECORE_NAME = "ieDisplay", SHLIBPREFIX="" )
riDisplayDriverEnv.Append( LIBS = os.path.basename( riEnv.subst( "$INSTALL_LIB_NAME" ) ) )


haveRI = False
riLibs = []

if doConfigure :

	# Since we only build shared libraries and not exectuables,
	# we only need to check that shared libs will link correctly.
	# This is necessary for 3delight 12.0.20 and newer, which use
	# a run-time compatible, but link-time incompatbile libstdc++
	# in some obscure studio setups. This approach succeeds because
	# building a shared library doesn't require resolving the
	# unresolved symbols of the libraries that it links to.
	riCheckEnv = riEnv.Clone()
	riCheckEnv.Append( CXXFLAGS = [ "-fPIC" ] )
	riCheckEnv.Append( LINKFLAGS = [ "-shared" ] )
	c = Configure( riCheckEnv )

	haveDelight = c.CheckLibWithHeader( "3delight", "ri.h", "CXX" )
	havePRMan = c.CheckLibWithHeader( "prman", "ri.h", "CXX" )

	if not haveDelight and not havePRMan :

		sys.stderr.write( "WARNING : no 3delight or prman library found, not building IECoreRI - check RMAN_ROOT.\n" )
		c.Finish()

	else :

		haveRI = True
		if haveDelight :
			riLibs = [ "3delight" ]
		else :
			riLibs = [ "prman" ]
		riEnv.Append( LIBS = riLibs )
		riPythonModuleEnv.Append( LIBS = riLibs )

		riSources = sorted( glob.glob( "src/IECoreRI/*.cpp" ) )
		riHeaders = glob.glob( "include/IECoreRI/*.h" ) + glob.glob( "include/IECoreRI/*.inl" )
		riPythonSources = sorted( glob.glob( "src/IECoreRI/bindings/*.cpp" ) )
		riPythonScripts = glob.glob( "python/IECoreRI/*.py" )

		if c.CheckCXXHeader( "pointcloud.h" ) :

			riEnv.Append( CPPFLAGS = "-DIECORERI_WITH_PTC" )
			riPythonModuleEnv.Append( CPPFLAGS = "-DIECORERI_WITH_PTC" )

		else :

			riSources.remove( "src/IECoreRI/PTCParticleReader.cpp" )
			riSources.remove( "src/IECoreRI/PTCParticleWriter.cpp" )
			riPythonSources.remove( "src/IECoreRI/bindings/PTCParticleReaderBinding.cpp" )
			riPythonSources.remove( "src/IECoreRI/bindings/PTCParticleWriterBinding.cpp" )

		if c.CheckFunc( "RiObjectBeginV", language="CXX" ) :

			riEnv.Append( CPPFLAGS = [ "-DIECORERI_WITH_OBJECTBEGINV" ] )

		if c.CheckFunc( "RiProceduralV", language="CXX" ) :

			riEnv.Append( CPPFLAGS = [ "-DIECORERI_WITH_PROCEDURALV" ] )

		if haveDelight and c.CheckCXXHeader( "sx.h" ) and c.CheckFunc( "SxGetParameter", language="CXX" ) :

			riEnv.Append( CPPFLAGS = "-DIECORERI_WITH_SX" )
			riPythonModuleEnv.Append( CPPFLAGS = "-DIECORERI_WITH_SX" )

		else :

			riSources.remove( "src/IECoreRI/SXRenderer.cpp" )
			riSources.remove( "src/IECoreRI/SXRendererImplementation.cpp" )
			riSources.remove( "src/IECoreRI/SXExecutor.cpp" )
			riPythonSources.remove( "src/IECoreRI/bindings/SXRendererBinding.cpp" )

			if haveDelight :

				sys.stderr.write( "WARNING : Supported Sx API version not found - not building SXRenderer. Use 3delight 9.0.36 or later.\n" )

		if haveDelight and c.CheckCXXHeader( "gx.h" ) and c.CheckFunc( "GxGetGeometry", language="CXX" ) :

			riEnv.Append( CPPFLAGS = "-DIECORERI_WITH_GX" )
			riPythonModuleEnv.Append( CPPFLAGS = "-DIECORERI_WITH_GX" )

		else :

			riSources.remove( "src/IECoreRI/GXEvaluator.cpp" )
			riPythonSources.remove( "src/IECoreRI/bindings/GXEvaluatorBinding.cpp" )

			if haveDelight :

				sys.stderr.write( "WARNING : Gx API not found - not building GXEvaluator. Use 3delight 9.0.39 or later.\n" )

		if c.CheckCXXHeader( "RixDeepTexture.h" ) :

			riEnv.Append( CPPFLAGS = "-DIECORERI_WITH_RIXDEEP" )
			riPythonModuleEnv.Append( CPPFLAGS = "-DIECORERI_WITH_RIXDEEP" )

		else :

			riSources.remove( "src/IECoreRI/DTEXDeepImageReader.cpp" )
			riSources.remove( "src/IECoreRI/DTEXDeepImageWriter.cpp" )
			riPythonSources.remove( "src/IECoreRI/bindings/DTEXDeepImageReaderBinding.cpp" )
			riPythonSources.remove( "src/IECoreRI/bindings/DTEXDeepImageWriterBinding.cpp" )

			if havePRMan :

				sys.stderr.write( "WARNING : RixDeepTexture API not found - not building IECoreRI::DTEXDeepTexture functionality. Use PRMan 16.1 or later.\n" )

		if haveDelight and c.CheckCXXHeader( "dtex.h" ) :

			riEnv.Append( CPPFLAGS = "-DIECORERI_WITH_DEEPSHW" )
			riPythonModuleEnv.Append( CPPFLAGS = "-DIECORERI_WITH_DEEPSHW" )

		else :

			riSources.remove( "src/IECoreRI/SHWDeepImageReader.cpp" )
			riSources.remove( "src/IECoreRI/SHWDeepImageWriter.cpp" )
			riPythonSources.remove( "src/IECoreRI/bindings/SHWDeepImageReaderBinding.cpp" )
			riPythonSources.remove( "src/IECoreRI/bindings/SHWDeepImageWriterBinding.cpp" )

		if haveDelight and c.CheckCXXHeader( "nsi.h" ) :

			riSources.append( glob.glob( "src/IECoreRI/NSI/*.cpp" ) )
			riEnv.Append( CPPFLAGS = [ "-DIECORERI_WITH_NSI" ] )

		elif haveDelight :

			sys.stderr.write( "WARNING : NSI API not found - not building NSI support.\n" )

		c.Finish()

		# we can't append this before configuring, as then it gets built as
		# part of the configure process
		riEnv.Append( LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ) )
		riPythonModuleEnv.Append( LIBS = os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ) )

		# library
		riLibrary = riEnv.SharedLibrary( "lib/" + os.path.basename( riEnv.subst( "$INSTALL_RMANLIB_NAME" ) ), riSources )
		riLibraryInstall = riEnv.Install( os.path.dirname( riEnv.subst( "$INSTALL_RMANLIB_NAME" ) ), riLibrary )
		riEnv.NoCache( riLibraryInstall )
		riEnv.AddPostAction( riLibraryInstall, lambda target, source, env : makeLibSymLinks( riEnv ) )
		riEnv.Alias( "install", riLibraryInstall )
		riEnv.Alias( "installRI", riLibraryInstall )
		riEnv.Alias( "installLib", [ riLibraryInstall ] )

		# headers
		riHeaderInstall = riEnv.Install( "$INSTALL_HEADER_DIR/IECoreRI", riHeaders )
		riEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreRI", lambda target, source, env : makeSymLinks( riEnv, riEnv["INSTALL_HEADER_DIR"] ) )
		riEnv.Alias( "install", riHeaderInstall )
		riEnv.Alias( "installRI", riHeaderInstall )

		# python procedural
		riPythonProcedural = riPythonProceduralEnv.SharedLibrary( "src/rmanProcedurals/python/" + os.path.basename( riPythonProceduralEnv.subst( "$INSTALL_RMANPROCEDURAL_NAME" ) ), "src/rmanProcedurals/python/Procedural.cpp" )
		riPythonProceduralInstall = riEnv.Install( os.path.dirname( riPythonProceduralEnv.subst( "$INSTALL_RMANPROCEDURAL_NAME" ) ), riPythonProcedural )
		riPythonProceduralEnv.NoCache( riPythonProceduralInstall )
		riPythonProceduralEnv.AddPostAction( riPythonProceduralInstall, lambda target, source, env : makeLibSymLinks( riPythonProceduralEnv, libNameVar="INSTALL_RMANPROCEDURAL_NAME" ) )
		riPythonProceduralEnv.Alias( "install", riPythonProceduralInstall )
		riPythonProceduralEnv.Alias( "installRI", riPythonProceduralInstall )
		riPythonProceduralForTest = riPythonProceduralEnv.Command( "src/rmanProcedurals/python/python$SHLIBSUFFIX", riPythonProcedural, Copy( "$TARGET", "$SOURCE" ) )

		# display driver
		riDisplayDriver = riDisplayDriverEnv.SharedLibrary( "src/rmanDisplays/ieDisplay/" + os.path.basename( riDisplayDriverEnv.subst( "$INSTALL_RMANDISPLAY_NAME" ) ), "src/rmanDisplays/ieDisplay/IEDisplay.cpp" )
		riDisplayDriverInstall = riEnv.Install( os.path.dirname( riDisplayDriverEnv.subst( "$INSTALL_RMANDISPLAY_NAME" ) ), riDisplayDriver )
		riDisplayDriverEnv.NoCache( riDisplayDriverInstall )
		riDisplayDriverEnv.AddPostAction( riDisplayDriverInstall, lambda target, source, env : makeLibSymLinks( riDisplayDriverEnv, libNameVar="INSTALL_RMANDISPLAY_NAME" ) )
		riDisplayDriverEnv.Alias( "install", riDisplayDriverInstall )
		riDisplayDriverEnv.Alias( "installRI", riDisplayDriverInstall )
		riDisplayDriverForTest = riDisplayDriverEnv.Command( "src/rmanDisplays/ieDisplay/ieTestDisplay$SHLIBSUFFIX", riDisplayDriver, Copy( "$TARGET", "$SOURCE" ) )

		# rsl headers
		rslHeaders = glob.glob( "rsl/IECoreRI/*.h" ) + glob.glob( "rsl/IECoreRI/*.inl" )
		rslHeaderInstall = riEnv.Install( "$INSTALL_RSL_HEADER_DIR/IECoreRI", rslHeaders )
		riEnv.AddPostAction( "$INSTALL_RSL_HEADER_DIR/IECoreRI", lambda target, source, env : makeSymLinks( riEnv, riEnv["INSTALL_RSL_HEADER_DIR"] ) )
		riEnv.Alias( "install", rslHeaderInstall )
		riEnv.Alias( "installRI", rslHeaderInstall )

		# python module
		riPythonModuleEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( riEnv.subst( "$INSTALL_LIB_NAME" ) ),
			]
		)
		riPythonModule = riPythonModuleEnv.SharedLibrary( "python/IECoreRI/_IECoreRI", riPythonSources )
		riPythonModuleEnv.Depends( riPythonModule, riLibrary )

		riPythonModuleInstall = riPythonModuleEnv.Install( "$INSTALL_PYTHON_DIR/IECoreRI", riPythonScripts + riPythonModule )
		riPythonModuleEnv.AddPostAction( "$INSTALL_PYTHON_DIR/IECoreRI", lambda target, source, env : makeSymLinks( riPythonModuleEnv, riPythonModuleEnv["INSTALL_PYTHON_DIR"] ) )
		riPythonModuleEnv.Alias( "install", riPythonModuleInstall )
		riPythonModuleEnv.Alias( "installRI", riPythonModuleInstall )

		if coreEnv["INSTALL_CORERI_POST_COMMAND"]!="" :
			# this is the only way we could find to get a post action to run for an alias
			riPythonModuleEnv.Alias( "install", riPythonModuleInstall, "$INSTALL_CORERI_POST_COMMAND" )
			riPythonModuleEnv.Alias( "installRI", riPythonModuleInstall, "$INSTALL_CORERI_POST_COMMAND" )

		Default( [ riLibrary, riPythonModule, riPythonProcedural, riPythonProceduralForTest ] )

		# tests
		riTestEnv = testEnv.Clone()

		riTestEnv["ENV"][testEnv["TEST_LIBRARY_PATH_ENV_VAR"]] += ":" + riEnv.subst( ":".join( riPythonModuleEnv["LIBPATH"] ) )
		riTestEnv["ENV"]["SHADER_PATH"] = riEnv.subst( "$RMAN_ROOT/shaders" )
		riTestEnv["ENV"]["DELIGHT"] = riEnv.subst( "$RMAN_ROOT" )
		riTestEnv["ENV"]["DL_SHADERS_PATH"] = riEnv.subst( "$RMAN_ROOT/shaders" ) + ":./"
		riTestEnv["ENV"]["DL_DISPLAYS_PATH"] = riEnv.subst( "$RMAN_ROOT/displays" )
		riTestEnv["ENV"]["PATH"] = riEnv.subst( "$RMAN_ROOT/bin" ) + ":" + riTestEnv["ENV"]["PATH"]

		riTest = riTestEnv.Command( "test/IECoreRI/results.txt", riPythonModule, pythonExecutable + " $TEST_RI_SCRIPT" )
		NoCache( riTest )
		riTestEnv.Depends( riTest, [ corePythonModule + riPythonProceduralForTest + riDisplayDriverForTest ] )
		riTestEnv.Depends( riTest, glob.glob( "test/IECoreRI/*.py" ) )
		riTestEnv.Alias( "testRI", riTest )

###########################################################################################
# Build, install and test the optional CoreGL library and bindings
###########################################################################################

if env["WITH_GL"] and doConfigure :

	glEnvSets = {
		"IECORE_NAME" : "IECoreGL",
	}

	glEnvAppends = {

		"CXXFLAGS" : [
			"-isystem", "$GLEW_INCLUDE_PATH",
			# These are to work around warnings in boost::wave
			# while still using -Werror.
			"-Wno-format",
			"-Wno-strict-aliasing",
		],
		"LIBPATH" : [
			"$GLEW_LIB_PATH",
		],
	}

	glEnv = coreEnv.Clone( **glEnvSets )
	glEnv.Append( **glEnvAppends )

	c = Configure( glEnv )

	if not c.CheckLibWithHeader( env.subst( "GLEW$GLEW_LIB_SUFFIX" ), "glew.h", "CXX" ) :

		sys.stderr.write( "WARNING : GLEW library not found, not building IECoreGL - check GLEW_INCLUDE_PATH and GLEW_LIB_PATH.\n" )
		c.Finish()

	else :

		c.Finish()

		# we can't add this earlier as then it's built during the configure stage, and that's no good
		glEnv.Append( LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ) )

		if env["PLATFORM"]=="darwin" :
			glEnv.Append(
				FRAMEWORKS = [
					"OpenGL",
				]
			)
		else :
			glEnv.Append(
				LIBS = [
					"GL",
					"GLU",
				]
			)

		glSources = sorted( glob.glob( "src/IECoreGL/*.cpp" ) )
		glPythonSources = sorted( glob.glob( "src/IECoreGL/bindings/*.cpp" ) )
		if not "-DIECORE_WITH_FREETYPE" in glEnv["CPPFLAGS"] :
			glSources.remove( "src/IECoreGL/Font.cpp" )
			glSources.remove( "src/IECoreGL/FontLoader.cpp" )
			glSources.remove( "src/IECoreGL/TextPrimitive.cpp" )
			glPythonSources.remove( "src/IECoreGL/bindings/FontBinding.cpp" )
			glPythonSources.remove( "src/IECoreGL/bindings/FontLoaderBinding.cpp" )

		glLibrary = glEnv.SharedLibrary( "lib/" + os.path.basename( glEnv.subst( "$INSTALL_LIB_NAME" ) ), glSources )
		glLibraryInstall = glEnv.Install( os.path.dirname( glEnv.subst( "$INSTALL_LIB_NAME" ) ), glLibrary )
		glEnv.NoCache( glLibraryInstall )
		glEnv.AddPostAction( glLibraryInstall, lambda target, source, env : makeLibSymLinks( glEnv ) )
		glEnv.Alias( "install", glLibraryInstall )
		glEnv.Alias( "installGL", glLibraryInstall )
		glEnv.Alias( "installLib", [ glLibraryInstall ] )

		glHeaders = glob.glob( "include/IECoreGL/*.h" ) + glob.glob( "include/IECoreGL/*.inl" )
		glHeaderInstall = glEnv.Install( "$INSTALL_HEADER_DIR/IECoreGL", glHeaders )
		glEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreGL", lambda target, source, env : makeSymLinks( glEnv, glEnv["INSTALL_HEADER_DIR"] ) )
		glEnv.Alias( "install", glHeaderInstall )
		glEnv.Alias( "installGL", glHeaderInstall )

		glslHeaders = glob.glob( "glsl/IECoreGL/*.h" )
		glslHeaderInstall = glEnv.Install( "$INSTALL_GLSL_HEADER_DIR/IECoreGL", glslHeaders )
		glEnv.AddPostAction( "$INSTALL_GLSL_HEADER_DIR/IECoreGL", lambda target, source, env : makeSymLinks( glEnv, glEnv["INSTALL_GLSL_HEADER_DIR"] ) )
		glEnv.Alias( "install", glslHeaderInstall )
		glEnv.Alias( "installGL", glslHeaderInstall )

		glslShaderFiles = glob.glob( "glsl/*.frag" ) + glob.glob( "glsl/*.vert" )
		glslShaderInstall = glEnv.Install( "$INSTALL_GLSL_SHADER_DIR", glslShaderFiles )
		glEnv.AddPostAction( "$INSTALL_GLSL_SHADER_DIR", lambda target, source, env : makeSymLinks( glEnv, glEnv["INSTALL_GLSL_SHADER_DIR"] ) )
		glEnv.Alias( "install", glslShaderInstall )
		glEnv.Alias( "installGL", glslShaderInstall )

		glPythonModuleEnv = corePythonModuleEnv.Clone( **glEnvSets )
		glPythonModuleEnv.Append( **glEnvAppends )
		glPythonModuleEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( glEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ),
			]
		)
		glPythonModule = glPythonModuleEnv.SharedLibrary( "python/IECoreGL/_IECoreGL", glPythonSources )
		glPythonModuleEnv.Depends( glPythonModule, glLibrary )

		glPythonScripts = glob.glob( "python/IECoreGL/*.py" )
		glPythonModuleInstall = glPythonModuleEnv.Install( "$INSTALL_PYTHON_DIR/IECoreGL", glPythonScripts + glPythonModule )
		glPythonModuleEnv.AddPostAction( "$INSTALL_PYTHON_DIR/IECoreGL", lambda target, source, env : makeSymLinks( glPythonModuleEnv, glPythonModuleEnv["INSTALL_PYTHON_DIR"] ) )
		glPythonModuleEnv.Alias( "install", glPythonModuleInstall )
		glPythonModuleEnv.Alias( "installGL", glPythonModuleInstall )

		if coreEnv["INSTALL_COREGL_POST_COMMAND"]!="" :
			# this is the only way we could find to get a post action to run for an alias
			glPythonModuleEnv.Alias( "install", glPythonModuleInstall, "$INSTALL_COREGL_POST_COMMAND" )
			glPythonModuleEnv.Alias( "installGL", glPythonModuleInstall, "$INSTALL_COREGL_POST_COMMAND" )

		Default( [ glLibrary, glPythonModule ] )

		glTestEnv = testEnv.Clone()
		glTestEnv["ENV"]["PYTHONPATH"] = glTestEnv["ENV"]["PYTHONPATH"] + ":python"
		glTestEnv["ENV"]["IECOREGL_SHADER_INCLUDE_PATHS"] = "./glsl"
		for e in ["DISPLAY", "XAUTHORITY"] :
			if e in os.environ :
				glTestEnv["ENV"][e] = os.environ[e]

		glTest = glTestEnv.Command( "test/IECoreGL/results.txt", glPythonModule, pythonExecutable + " $TEST_GL_SCRIPT --verbose" )
		NoCache( glTest )
		glTestEnv.Depends( glTest, corePythonModule )
		glTestEnv.Depends( glTest, glob.glob( "test/IECoreGL/*.py" ) )
		glTestEnv.Alias( "testGL", glTest )

###########################################################################################
# Build, install and test the coreMaya library and bindings
###########################################################################################

mayaEnvSets = {
	"IECORE_NAME" : "IECoreMaya",
}

mayaEnvAppends = {
	"CXXFLAGS" : [
		"-isystem", "$GLEW_INCLUDE_PATH",
	],
	"LIBS" : [
		"OpenMaya",
		"OpenMayaUI",
		"OpenMayaAnim",
		"OpenMayaFX",
		"boost_python" + pythonEnv["BOOST_LIB_SUFFIX"],
	],
	"CPPFLAGS" : [
		"-D_BOOL",
		"-DREQUIRE_IOSTREAM",
		pythonEnv["PYTHON_INCLUDE_FLAGS"],
	],
}

if env["PLATFORM"]=="posix" :
	mayaEnvAppends["CPPFLAGS"] += ["-DLINUX"]
	mayaEnvAppends["LIBPATH"] = ["$MAYA_ROOT/lib"]
	mayaEnvAppends["CXXFLAGS"] += [ "-isystem", "$MAYA_ROOT/include" ]
	mayaEnvAppends["LIBS"]  += ["OpenMayalib"]

elif env["PLATFORM"]=="darwin" :
	mayaEnvAppends["CPPFLAGS"]  += ["-DOSMac_","-DOSMac_MachO_"]
	mayaEnvAppends["LIBPATH"] = ["$MAYA_ROOT/MacOS"]
	mayaEnvAppends["CPPPATH"] = ["$MAYA_ROOT/../../devkit/include"]
	mayaEnvAppends["LIBS"] += ["Foundation", "OpenMayaRender"]
	mayaEnvAppends["FRAMEWORKS"] = ["AGL", "OpenGL"]

mayaEnv = env.Clone( **mayaEnvSets )
mayaEnv.Append( **mayaEnvAppends )

mayaEnv.Append( SHLINKFLAGS = pythonEnv["PYTHON_LINK_FLAGS"].split() )

mayaPythonModuleEnv = pythonModuleEnv.Clone( **mayaEnvSets )
mayaPythonModuleEnv.Append( **mayaEnvAppends )

mayaPluginEnv = mayaEnv.Clone( IECORE_NAME="ieCore" )

haveMaya = False

if doConfigure :

	c = Configure( mayaEnv )

	if not c.CheckCXXHeader( "maya/MVectorArray.h" ) :

		sys.stderr.write( "WARNING : no maya devkit found, not building IECoreMaya - check MAYA_ROOT.\n" )
		c.Finish()

	else :

		c.Finish()

		haveMaya = True

		mayaSources = sorted( glob.glob( "src/IECoreMaya/*.cpp" ) )
		mayaHeaders = glob.glob( "include/IECoreMaya/bindings/*.h" ) + glob.glob( "include/IECoreMaya/*.h" ) + glob.glob( "include/IECoreMaya/*.inl" )
		mayaBindingHeaders = glob.glob( "include/IECoreMaya/bindings/*.h" ) + glob.glob( "include/IECoreMaya/bindings/*.inl" )
		mayaPythonSources = sorted( glob.glob( "src/IECoreMaya/bindings/*.cpp" ) )
		mayaPythonScripts = glob.glob( "python/IECoreMaya/*.py" )
		mayaMel = glob.glob( "mel/IECoreMaya/*.mel" )
		mayaPluginSources = [ "src/IECoreMaya/plugin/Plugin.cpp" ]

		# deal with adding or removing renderman bits as necessary
		if haveRI :
			mayaEnv.Append( LIBS = riLibs )
			mayaEnv.Append( LIBPATH = [ "$RMAN_ROOT/lib" ] )
			mayaEnv.Append( CPPFLAGS = "-DIECOREMAYA_WITH_RI" )
			mayaEnv.Append( CXXFLAGS = [ "-isystem", "$RMAN_ROOT/include" ] )
			mayaEnv.Append( CPPFLAGS = [ "-DIECORERI_RMANPROCEDURAL_NAME=" + os.path.basename( riPythonProceduralEnv.subst( "$INSTALL_RMANPROCEDURAL_NAME" ) ) ] )
			mayaEnv.Append( LIBS = os.path.basename( riEnv.subst( "$INSTALL_LIB_NAME" ) ) )

		if not haveRI or havePRMan :
			mayaSources.remove( "src/IECoreMaya/DelightProceduralCacheCommand.cpp" )

		# we can't append this before configuring, as then it gets built as
		# part of the configure process
		mayaEnv.Append( LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ) )
		mayaEnv.Append( LIBS = os.path.basename( glEnv.subst( "$INSTALL_LIB_NAME" ) ) )
		mayaEnv.Append( LIBS = os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ) )

		# maya library
		mayaLibrary = mayaEnv.SharedLibrary( "lib/" + os.path.basename( mayaEnv.subst( "$INSTALL_MAYALIB_NAME" ) ), mayaSources )
		mayaLibraryInstall = mayaEnv.Install( os.path.dirname( mayaEnv.subst( "$INSTALL_MAYALIB_NAME" ) ), mayaLibrary )
		mayaEnv.NoCache( mayaLibraryInstall )
		mayaEnv.AddPostAction( mayaLibraryInstall, lambda target, source, env : makeLibSymLinks( mayaEnv, "INSTALL_MAYALIB_NAME" ) )
		mayaEnv.Alias( "install", mayaLibraryInstall )
		mayaEnv.Alias( "installMaya", mayaLibraryInstall )
		mayaEnv.Alias( "installLib", [ mayaLibraryInstall ] )

 		# maya headers
		mayaHeaderInstall = mayaEnv.Install( "$INSTALL_HEADER_DIR/IECoreMaya", mayaHeaders )
		mayaHeaderInstall += mayaEnv.Install( "$INSTALL_HEADER_DIR/IECoreMaya/bindings", mayaBindingHeaders )
		mayaEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreMaya", lambda target, source, env : makeSymLinks( mayaEnv, mayaEnv["INSTALL_HEADER_DIR"] ) )
		mayaEnv.Alias( "install", mayaHeaderInstall )
		mayaEnv.Alias( "installMaya", mayaHeaderInstall )

		# maya mel
		mayaMelInstall = mayaEnv.Install( "$INSTALL_MEL_DIR", mayaMel )
		mayaEnv.AddPostAction( "$INSTALL_MEL_DIR", lambda target, source, env : makeSymLinks( mayaEnv, mayaEnv["INSTALL_MEL_DIR"] ) )
		mayaEnv.Alias( "install", mayaMelInstall )
		mayaEnv.Alias( "installMaya", mayaMelInstall )

		# maya icons
		mayaIcons = glob.glob( "icons/IECoreMaya/*.xpm" ) + glob.glob( "icons/IECoreMaya/*.png" )
		mayaIconInstall = mayaEnv.Install( "$INSTALL_MAYAICON_DIR", source=mayaIcons )
		mayaEnv.Alias( "install", mayaIconInstall )
		mayaEnv.Alias( "installMaya", mayaIconInstall )

		# maya plugin
		mayaPluginEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_MAYALIB_NAME" ) ),
				os.path.basename( mayaEnv.subst( "$INSTALL_MAYALIB_NAME" ) ),
			]
		)
		if env["PLATFORM"]=="darwin" :
			mayaPluginEnv['SHLINKFLAGS'] = '$LINKFLAGS -bundle'
			mayaPluginEnv['SHLIBSUFFIX'] =  '.bundle'

		mayaPluginTarget = "plugins/maya/" + os.path.basename( mayaPluginEnv.subst( "$INSTALL_MAYAPLUGIN_NAME" ) )

		if env["WITH_MAYA_PLUGIN_LOADER"] :

			mayaPluginLoaderSources = [ 'src/IECoreMaya/plugin/Loader.cpp' ]

			mayaPluginLoaderEnv = mayaPluginEnv.Clone()
			mayaPluginLoaderEnv.Append(
				LIBS = [
					"dl"
				]
			)

			mayaPluginLoader = mayaPluginLoaderEnv.SharedLibrary( mayaPluginTarget, mayaPluginLoaderSources, SHLIBPREFIX="" )
			mayaPluginLoaderInstall = mayaPluginLoaderEnv.InstallAs( mayaPluginLoaderEnv.subst( "$INSTALL_MAYAPLUGIN_NAME$SHLIBSUFFIX" ), mayaPluginLoader )
			mayaPluginLoaderEnv.AddPostAction( mayaPluginLoaderInstall, lambda target, source, env : makeSymLinks( mayaPluginLoaderEnv, mayaPluginLoaderEnv["INSTALL_MAYAPLUGIN_NAME"] ) )
			mayaPluginLoaderEnv.Alias( "install", mayaPluginLoaderInstall )
			mayaPluginLoaderEnv.Alias( "installMaya", mayaPluginLoaderInstall )

			Default( mayaPluginLoader )

			mayaPluginEnv["INSTALL_MAYAPLUGIN_NAME"] = os.path.join( os.path.dirname( mayaPluginEnv["INSTALL_MAYAPLUGIN_NAME"] ), 'impl', os.path.basename( mayaPluginEnv["INSTALL_MAYAPLUGIN_NAME"] ) )
			mayaPluginTarget = "plugins/maya/impl/" + os.path.basename( mayaPluginEnv.subst( "$INSTALL_MAYAPLUGIN_NAME" ) )

		mayaPlugin = mayaPluginEnv.SharedLibrary( mayaPluginTarget, mayaPluginSources, SHLIBPREFIX="" )
		mayaPluginInstall = mayaPluginEnv.Install( os.path.dirname( mayaPluginEnv.subst( "$INSTALL_MAYAPLUGIN_NAME" ) ), mayaPlugin )
		mayaPluginEnv.Depends( mayaPlugin, corePythonModule )

		mayaPluginEnv.AddPostAction( mayaPluginInstall, lambda target, source, env : makeSymLinks( mayaPluginEnv, mayaPluginEnv["INSTALL_MAYAPLUGIN_NAME"] ) )
		mayaPluginEnv.Alias( "install", mayaPluginInstall )
		mayaPluginEnv.Alias( "installMaya", mayaPluginInstall )

		# maya python
		mayaPythonModuleEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( mayaEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ),
			]
		)
		mayaPythonModule = mayaPythonModuleEnv.SharedLibrary( "python/IECoreMaya/_IECoreMaya", mayaPythonSources )
		mayaPythonModuleEnv.Depends( mayaPythonModule, mayaLibrary )

		mayaPythonModuleInstall = mayaPythonModuleEnv.Install( "$INSTALL_PYTHON_DIR/IECoreMaya", mayaPythonScripts + mayaPythonModule )
		mayaPythonModuleEnv.AddPostAction( "$INSTALL_PYTHON_DIR/IECoreMaya", lambda target, source, env : makeSymLinks( mayaPythonModuleEnv, mayaPythonModuleEnv["INSTALL_PYTHON_DIR"] ) )
		mayaPythonModuleEnv.Alias( "install", mayaPythonModuleInstall )
		mayaPythonModuleEnv.Alias( "installMaya", mayaPythonModuleInstall )

		if coreEnv["INSTALL_COREMAYA_POST_COMMAND"]!="" :
			# this is the only way we could find to get a post action to run for an alias
			mayaPythonModuleEnv.Alias( "install", mayaPythonModuleInstall, "$INSTALL_COREMAYA_POST_COMMAND" )
			mayaPythonModuleEnv.Alias( "installMaya", mayaPythonModuleInstall, "$INSTALL_COREMAYA_POST_COMMAND" )

		Default( [ mayaLibrary, mayaPlugin, mayaPythonModule ] )

		mayaTestEnv = testEnv.Clone()

		mayaTestLibPaths = mayaEnv.subst( ":".join( mayaPythonModuleEnv["LIBPATH"] ) )
		if haveRI :
			mayaTestLibPaths += ":" + mayaEnv.subst( "$RMAN_ROOT/lib" )
		mayaTestEnv["ENV"][mayaTestEnv["TEST_LIBRARY_PATH_ENV_VAR"]] += ":" + mayaTestLibPaths
		mayaTestEnv["ENV"][libraryPathEnvVar] += ":" + mayaTestLibPaths

		mayaTestEnv["ENV"]["PATH"] = mayaEnv.subst( "$MAYA_ROOT/bin:" ) + mayaEnv["ENV"]["PATH"]
		mayaTestEnv["ENV"]["MAYA_PLUG_IN_PATH"] = "./plugins/maya:./test/IECoreMaya/plugins"
		mayaTestEnv["ENV"]["MAYA_SCRIPT_PATH"] = "./mel"
		mayaTestEnv["ENV"]["PYTHONHOME"] = mayaTestEnv.subst( "$MAYA_ROOT" )
		mayaTestEnv["ENV"]["MAYA_LOCATION"] = mayaTestEnv.subst( "$MAYA_ROOT" )
		mayaTestEnv["ENV"]["LM_LICENSE_FILE"] = env["MAYA_LICENSE_FILE"]
		mayaTestEnv["ENV"]["AUTODESK_ADLM_THINCLIENT_ENV"] = env["MAYA_ADLM_ENV_FILE"]

		mayaPythonTestEnv = mayaTestEnv.Clone()

		mayaTestEnv.Append( **mayaEnvAppends )
		mayaTestEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( mayaEnv.subst( "$INSTALL_LIB_NAME" ) ),
				"OpenMayalib"
			]
		)

		mayaPythonTest = mayaPythonTestEnv.Command( "test/IECoreMaya/resultsPython.txt", mayaPythonModule, "mayapy $TEST_MAYA_SCRIPT" )
		NoCache( mayaPythonTest )
		mayaPythonTestEnv.Depends( mayaPythonTest, [ mayaPlugin, mayaPythonModule, mayaLibrary ] )
		mayaPythonTestEnv.Depends( mayaPythonTest, glob.glob( "test/IECoreMaya/*.py" ) )
		mayaPythonTestEnv.Depends( mayaPythonTest, glob.glob( "python/IECoreMaya/*.py" ) )
		if env["WITH_MAYA_PLUGIN_LOADER"] :
			mayaPythonTestEnv.Depends( mayaPythonTest, mayaPluginLoader )
		if env["WITH_GL"] :
			mayaPythonTestEnv.Depends( mayaPythonTest, [ glLibrary, glPythonModule ] )
		mayaPythonTestEnv.Alias( "testMaya", mayaPythonTest )
		mayaPythonTestEnv.Alias( "testMayaPython", mayaPythonTest )

###########################################################################################
# Build and install the coreNuke library, plugin, python module and headers
###########################################################################################

nukeEnvAppends = {

	"CXXFLAGS" : [
		"-isystem", "$NUKE_ROOT/include",
		"-isystem", "$GLEW_INCLUDE_PATH",
	],

	"CPPFLAGS" : [
		pythonEnv["PYTHON_INCLUDE_FLAGS"],
	],

	"LINKFLAGS" : [
		"-Wl,-rpath-link=$NUKE_ROOT",
	],

	"LIBPATH" : [
		"$NUKE_ROOT",
	],

	"LIBS" : [
		"GLEW$GLEW_LIB_SUFFIX",
	]

}

if env["PLATFORM"] == "darwin" :
	# FN_OS_MAC is required to work around isnan errors in DDImage/Matrix4.h
	nukeEnvAppends["CPPFLAGS"].append( "-DFN_OS_MAC" )

nukeEnv = env.Clone( IECORE_NAME = "IECoreNuke" )
nukeEnv.Append( **nukeEnvAppends )
nukeEnv.Append( SHLINKFLAGS = pythonEnv["PYTHON_LINK_FLAGS"].split() )
if env["PLATFORM"] == "darwin" :
	nukeEnv.Append( FRAMEWORKS = [ "OpenGL" ] )

nukePythonModuleEnv = pythonModuleEnv.Clone( IECORE_NAME = "IECoreNuke" )
nukePythonModuleEnv.Append( **nukeEnvAppends )

nukePluginEnv = nukeEnv.Clone( IECORE_NAME="ieCore" )

nukeTestEnv = testEnv.Clone()
nukeTestEnv["ENV"]["LM_LICENSE_FILE"] = nukeTestEnv["NUKE_LICENSE_FILE"]
nukeTestEnv["ENV"]["NUKE_PATH"] = "plugins/nuke"
nukeTestEnv["ENV"]["IECORE_OP_PATHS"] = "test/IECoreNuke/ops:test/IECore/ops"

if doConfigure :

	c = Configure( nukeEnv )

	if not c.CheckHeader( "DDImage/Vector3.h", "\"\"", "CXX" ) :

		sys.stderr.write( "WARNING : no nuke devkit found, not building IECoreNuke - check NUKE_ROOT.\n" )
		c.Finish()

	else :

		# figure out the nuke version from the headers
		nukeMajorVersion = None
		nukeMinorVersion = None
		nukeVersionHeader = env.FindFile( "DDImage/ddImageVersionNumbers.h", nukeEnv["CXXFLAGS"] )
		if nukeVersionHeader :

			for line in open( str( nukeVersionHeader ) ) :
				w = line.split()
				if len( w ) > 1 :
					if w[0]=="#define" and w[1]=="kDDImageVersionMajorNum" :
						nukeMajorVersion = int( w[2] )
					elif w[0]=="#define" and w[1]=="kDDImageVersionMinorNum" :
						nukeMinorVersion = int( w[2] )

		else :

			nukeMajorVersion = 4
			nukeMinorVersion = 8

		if nukeMajorVersion is None or nukeMinorVersion is None :

			sys.stderr.write( "ERROR : unable to determine nuke version - not building IECoreNuke.\n" )

		else :

			nukeEnv["NUKE_MAJOR_VERSION"] = nukeMajorVersion
			nukeEnv["NUKE_MINOR_VERSION"] = nukeMinorVersion

			nukeTestEnv["NUKE_MAJOR_VERSION"] = nukeMajorVersion
			nukeTestEnv["NUKE_MINOR_VERSION"] = nukeMinorVersion

			if nukeMajorVersion >=5 and nukeMinorVersion >=0 :
				nukeLibName = "DDImage"
			else :
				nukeLibName = "DDImage%d.%d" % ( nukeMajorVersion, nukeMinorVersion )

			if not c.CheckLibWithHeader( nukeLibName, "DDImage/Vector3.h", "CXX" ) :

				sys.stderr.write( "WARNING : no nuke libraries found, not building IECoreNuke - check NUKE_ROOT.\n" )
				c.Finish()

			else :

				c.Finish()

				# we can't add this earlier as then it's built during the configure stage, and that's no good
				nukeEnv.Append( LIBS = [
					os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
					os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ),
					os.path.basename( glEnv.subst( "$INSTALL_LIB_NAME" ) ),
				]	)

				nukeEnv.Append( LIBS = [ nukeLibName, "boost_python$BOOST_LIB_SUFFIX" ] )

				nukeEnv.Append(
					CPPFLAGS = [
    					"-DIECORENUKE_NUKE_MAJOR_VERSION=$NUKE_MAJOR_VERSION",
    					"-DIECORENUKE_NUKE_MINOR_VERSION=$NUKE_MINOR_VERSION",
					]
				)

				if "-DIECORE_WITH_DEEPEXR" in coreEnv["CPPFLAGS"] :
					nukeEnv.Append( CPPFLAGS = [ "-DIECORE_WITH_DEEPEXR" ] )

				nukePythonModuleEnv.Append( LIBS = [
					os.path.basename( nukeEnv.subst( "$INSTALL_LIB_NAME" ) ),
					os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
					os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ),
				] )

				nukeHeaders = glob.glob( "include/IECoreNuke/*.h" ) + glob.glob( "include/IECoreNuke/*.inl" )
				nukeSources = sorted( glob.glob( "src/IECoreNuke/*.cpp" ) )
				nukePythonSources = sorted( glob.glob( "src/IECoreNuke/bindings/*.cpp" ) )
				nukePythonScripts = glob.glob( "python/IECoreNuke/*.py" )
				nukePluginSources = sorted( glob.glob( "src/IECoreNuke/plugin/*.cpp" ) )
 				nukeNodeNames = [ "ieProcedural", "ieObject", "ieOp", "ieDrawable", "ieDisplay" ]

				if "-DIECORE_WITH_ASIO" in coreEnv["CPPFLAGS"] and "-DIECORE_WITH_SIGNALS" in coreEnv["CPPFLAGS"] :
					nukeEnv.Append( LIBS = [ "boost_signals" + env["BOOST_LIB_SUFFIX"] ] ),
				else :
					nukeSources.remove( "src/IECoreNuke/DisplayIop.cpp" )
					nukeNodeNames.remove( "ieDisplay" )

				if nukeMajorVersion < 7 :
					nukeSources.remove( "src/IECoreNuke/SceneCacheReader.cpp" )
					nukeHeaders.remove( "include/IECoreNuke/SceneCacheReader.h" )

				# nuke library

				nukeLibrary = nukeEnv.SharedLibrary( "lib/" + os.path.basename( nukeEnv.subst( "$INSTALL_NUKELIB_NAME" ) ), nukeSources )
				nukeLibraryInstall = nukeEnv.Install( os.path.dirname( nukeEnv.subst( "$INSTALL_NUKELIB_NAME" ) ), nukeLibrary )
				nukeEnv.AddPostAction( nukeLibraryInstall, lambda target, source, env : makeLibSymLinks( nukeEnv, "INSTALL_NUKELIB_NAME" ) )
				nukeEnv.Alias( "install", nukeLibraryInstall )
				nukeEnv.Alias( "installNuke", nukeLibraryInstall )
				nukeEnv.Alias( "installLib", [ nukeLibraryInstall ] )

				# nuke headers

				nukeHeaderInstall = nukeEnv.Install( "$INSTALL_HEADER_DIR/IECoreNuke", nukeHeaders )
				nukeEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreNuke", lambda target, source, env : makeSymLinks( nukeEnv, nukeEnv["INSTALL_HEADER_DIR"] ) )
				nukeEnv.Alias( "installNuke", nukeHeaderInstall )
				nukeEnv.Alias( "install", nukeHeaderInstall )

				# nuke python module

				nukePythonModule = nukePythonModuleEnv.SharedLibrary( "python/IECoreNuke/_IECoreNuke", nukePythonSources )
				nukePythonModuleInstall = nukePythonModuleEnv.Install( "$INSTALL_NUKEPYTHON_DIR/IECoreNuke", nukePythonScripts + nukePythonModule )
				nukePythonModuleEnv.AddPostAction( "$INSTALL_NUKEPYTHON_DIR/IECoreNuke", lambda target, source, env : makeSymLinks( nukePythonModuleEnv, nukePythonModuleEnv["INSTALL_NUKEPYTHON_DIR"] ) )
				nukePythonModuleEnv.Alias( "install", nukePythonModuleInstall )
				nukePythonModuleEnv.Alias( "installNuke", nukePythonModuleInstall )
				nukePythonModuleEnv.Depends( nukePythonModule, corePythonModule )

				if coreEnv["INSTALL_CORENUKE_POST_COMMAND"]!="" :
					# this is the only way we could find to get a post action to run for an alias
					nukeEnv.Alias( "install", nukeLibraryInstall, "$INSTALL_CORENUKE_POST_COMMAND" )
					nukeEnv.Alias( "installNuke", nukeLibraryInstall, "$INSTALL_CORENUKE_POST_COMMAND" )

				# nuke plugin

				nukePluginEnv.Append(
					LIBS = [
						os.path.basename( coreEnv.subst( "$INSTALL_NUKELIB_NAME" ) ),
						os.path.basename( nukeEnv.subst( "$INSTALL_NUKELIB_NAME" ) ),
					]
				)
				nukePluginTarget = "plugins/nuke/" + os.path.basename( nukePluginEnv.subst( "$INSTALL_NUKEPLUGIN_NAME" ) )
				nukePlugin = nukePluginEnv.SharedLibrary( nukePluginTarget, nukePluginSources, SHLIBPREFIX="" )
				nukePluginInstall = nukePluginEnv.Install( os.path.dirname( nukePluginEnv.subst( "$INSTALL_NUKEPLUGIN_NAME" ) ), nukePlugin )

				nukePluginEnv.AddPostAction( nukePluginInstall, lambda target, source, env : makeSymLinks( nukePluginEnv, nukePluginEnv["INSTALL_NUKEPLUGIN_NAME"] ) )
				nukePluginEnv.Alias( "install", nukePluginInstall )
				nukePluginEnv.Alias( "installNuke", nukePluginInstall )

				Default( [ nukeLibrary, nukePythonModule, nukePlugin ] )

				# nuke menu

				nukeMenuInstall = nukePluginEnv.Install( os.path.dirname( nukePluginEnv.subst( "$INSTALL_NUKEPLUGIN_NAME" ) ), "src/IECoreNuke/plugin/menu.py" )
				nukePluginEnv.Alias( "install", nukeMenuInstall )

				# stubs for each of the nodes within the plugin

				nukeStubs = []
				for nodeName in nukeNodeNames :

					nukeStubEnv = nukePluginEnv.Clone( IECORE_NAME=nodeName )
					nukeStubName = "plugins/nuke/" + os.path.basename( nukeStubEnv.subst( "$INSTALL_NUKEPLUGIN_NAME" ) ) + ".tcl"
					nukeStub = nukePluginEnv.Command( nukeStubName, nukePlugin, "echo 'load ieCore' > $TARGET" )
					nukeStubInstall = nukeStubEnv.Install( os.path.dirname( nukeStubEnv.subst( "$INSTALL_NUKEPLUGIN_NAME" ) ), nukeStub )
					nukeStubEnv.Alias( "install", nukeStubInstall )
					nukeStubEnv.Alias( "installNuke", nukeStubInstall )
					nukeStubs.append( nukeStub )
					Default( [ nukeStub ] )

				# nuke tests

				nukeTest = nukeTestEnv.Command( "test/IECoreNuke/resultsPython.txt", nukeLibrary, "echo \"execfile( '$TEST_NUKE_SCRIPT' )\" | $NUKE_ROOT/Nuke${NUKE_MAJOR_VERSION}.${NUKE_MINOR_VERSION} -t" )
				NoCache( nukeTest )
				nukeTestEnv.Depends( nukeTest, glob.glob( "test/IECoreNuke/*.py" ) )
				nukeTestEnv.Depends( nukeTest, nukePythonModule )
				nukeTestEnv.Depends( nukeTest, nukePlugin )
				nukeTestEnv.Depends( nukeTest, nukeStubs )
				nukeTestEnv.Alias( "testNuke", nukeTest )

###########################################################################################
# Build, install and test the coreHoudini library and bindings
###########################################################################################

houdiniEnvSets = {
	"IECORE_NAME" : "IECoreHoudini",
	"CXXFLAGS" : dependencyIncludes + [ "$HOUDINI_CXX_FLAGS", "-DMAKING_DSO" ]
}

houdiniEnvAppends = {
	"CXXFLAGS" : [
		"-isystem", "$GLEW_INCLUDE_PATH",
		"-isystem", "$HOUDINI_INCLUDE_PATH",
	],
	"CPPPATH" : [
		"contrib/IECoreMantra/include",
	],
	"CPPFLAGS" : [
		pythonEnv["PYTHON_INCLUDE_FLAGS"],
	],
	"LIBPATH" : [
		"$HOUDINI_LIB_PATH",
		"$GLEW_LIB_PATH",
	],
	"LIBS" : [
		"HoudiniUI",
		"HoudiniOPZ",
		"HoudiniOP3",
		"HoudiniOP2",
		"HoudiniOP1",
		"HoudiniSIM",
		"HoudiniGEO",
		"HoudiniPRM",
		"HoudiniUT",
		"HoudiniRAY",
		"HoudiniAPPS3",
		"boost_python" + env["BOOST_LIB_SUFFIX"],
		"GLEW$GLEW_LIB_SUFFIX"
	]
}

if env["PLATFORM"]=="posix" :
	houdiniEnvAppends["CPPFLAGS"] += ["-DLINUX"]
elif env["PLATFORM"]=="darwin" :
	houdiniEnvAppends["CPPFLAGS"] += ["-D__APPLE__"]
	houdiniEnvAppends["FRAMEWORKS"] = ["OpenGL"]
	houdiniEnvAppends["LIBS"] += [ "GR"]

houdiniEnv = env.Clone( **houdiniEnvSets )
houdiniEnv.Append( **houdiniEnvAppends )

houdiniEnv.Append( SHLINKFLAGS = pythonEnv["PYTHON_LINK_FLAGS"].split() )
houdiniEnv.Prepend( SHLINKFLAGS = "$HOUDINI_LINK_FLAGS" )

houdiniPythonModuleEnv = pythonModuleEnv.Clone( **houdiniEnvSets )
houdiniPythonModuleEnv.Append( **houdiniEnvAppends )
if env["PLATFORM"] == "posix" :
	## We really want to not have the -Wno-strict-aliasing flag, but it's necessary to stop boost
	# python warnings that don't seem to be prevented by including boost via -isystem even. Better to
	# be able to have -Werror but be missing one warning than to have no -Werror.
	## \todo This is probably only necessary for specific gcc versions where -isystem doesn't
	# fully work. Reenable when we encounter versions that work correctly.
	houdiniPythonModuleEnv.Append( CXXFLAGS = [ "-Wno-strict-aliasing" ] )

houdiniPluginEnv = houdiniEnv.Clone( IECORE_NAME="ieCoreHoudini" )

mantraEnv = houdiniEnv.Clone( IECORE_NAME="IECoreMantra")
## \todo: This is a stopgap measure to get IECoreMantra building for Houdini 14.
# We should come back and address the deprecations appropriately.
mantraEnv.Append( CXXFLAGS = [ "-Wno-deprecated-declarations" ] )
mantraPythonModuleEnv = houdiniPythonModuleEnv.Clone( IECORE_NAME="IECoreMantra" )
mantraProceduralEnv =  houdiniEnv.Clone( IECORE_NAME="VRAY_ieProcedural" )
mantraWorldEnv =  houdiniEnv.Clone( IECORE_NAME="VRAY_ieWorld" )

if doConfigure :

	c = Configure( houdiniEnv )

	if not c.CheckCXXHeader( "SOP/SOP_API.h" ) :

		sys.stderr.write( "WARNING : no houdini devkit found, not building IECoreHoudini - check HOUDINI_ROOT.\n" )
		c.Finish()

	else :

		c.Finish()

		#=====
		# glob the files
		#=====
		houdiniSources = sorted( glob.glob( "src/IECoreHoudini/*.cpp" ) )
		houdiniHeaders = glob.glob( "include/IECoreHoudini/*.h" ) + glob.glob( "include/IECoreHoudini/*.inl" )
		houdiniBindingHeaders = glob.glob( "include/IECoreHoudini/bindings/*.h" ) + glob.glob( "include/IECoreHoudini/bindings/*.inl" )
		houdiniPythonSources = sorted( glob.glob( "src/IECoreHoudini/bindings/*.cpp" ) )
		houdiniPythonScripts = glob.glob( "python/IECoreHoudini/*.py" )
		houdiniPluginSources = [ "src/IECoreHoudini/plugin/Plugin.cpp" ]
		if env['WITH_MANTRA']:
			mantraSources = sorted( glob.glob( "contrib/IECoreMantra/src/IECoreMantra/*.cpp") )
			mantraHeaders = glob.glob( "contrib/IECoreMantra/include/IECoreMantra/*.h" ) + glob.glob( "contrib/IECoreMantra/include/IECoreMantra/*.inl" )
			mantraBindingHeaders = glob.glob( "contrib/IECoreMantra/include/IECoreMantra/bindings/*.h" ) + glob.glob( "contrib/IECoreMantra/include/IECoreMantra/bindings/*.inl" )
			mantraPythonSources = sorted( glob.glob( "contrib/IECoreMantra/src/IECoreMantra/bindings/*.cpp") )
			mantraPythonScripts = glob.glob( "contrib/IECoreMantra/python/IECoreMantra/*.py" )
			mantraProceduralSources = [ "contrib/IECoreMantra/src/IECoreMantra/procedural/Procedural.cpp" ]
			mantraWorldSources = [ "contrib/IECoreMantra/src/IECoreMantra/procedural/World.cpp" ]


		# we can't append this before configuring, as then it gets built as
		# part of the configure process
		houdiniEnv.Append( LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ) )
		houdiniEnv.Append( LIBS = os.path.basename( glEnv.subst( "$INSTALL_LIB_NAME" ) ) )
		houdiniEnv.Append( LIBS = os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ) )

		mantraEnv.Append( LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ) )
		mantraEnv.Append( LIBS = os.path.basename( glEnv.subst( "$INSTALL_LIB_NAME" ) ) )
		mantraEnv.Append( LIBS = os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ) )

		#=====
		# build library
		#=====
		houdiniLib = houdiniEnv.SharedLibrary( "lib/" + os.path.basename( houdiniEnv.subst( "$INSTALL_HOUDINILIB_NAME" ) ), houdiniSources )
		houdiniLibInstall = houdiniEnv.Install( os.path.dirname( houdiniEnv.subst( "$INSTALL_HOUDINILIB_NAME" ) ), houdiniLib )
		houdiniEnv.NoCache( houdiniLibInstall )
		houdiniEnv.AddPostAction( houdiniLibInstall, lambda target, source, env : makeLibSymLinks( houdiniEnv, "INSTALL_HOUDINILIB_NAME" ) )
		houdiniEnv.Alias( "install", houdiniLibInstall )
		houdiniEnv.Alias( "installHoudini", houdiniLibInstall )
		houdiniEnv.Alias( "installLib", [ houdiniLibInstall ] )

		#=====
		# install headers
		#=====
		houdiniHeaderInstall = houdiniEnv.Install( "$INSTALL_HEADER_DIR/IECoreHoudini", houdiniHeaders )
		houdiniHeaderInstall += houdiniEnv.Install( "$INSTALL_HEADER_DIR/IECoreHoudini/bindings", houdiniBindingHeaders )
		houdiniEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreHoudini", lambda target, source, env : makeSymLinks( houdiniEnv, houdiniEnv["INSTALL_HEADER_DIR"] ) )
		houdiniEnv.Alias( "install", houdiniHeaderInstall )
		houdiniEnv.Alias( "installHoudini", houdiniHeaderInstall )

		#=====
		# build houdini plugin
		#=====
		houdiniPluginEnv.Append(
			LIBS=[
				os.path.basename( houdiniEnv.subst( "$INSTALL_HOUDINILIB_NAME" ) ),
			],
		)
		houdiniPluginTarget = "plugins/houdini/" + os.path.basename( houdiniPluginEnv.subst( "$INSTALL_HOUDINIPLUGIN_NAME" ) )
		houdiniPlugin = houdiniPluginEnv.SharedLibrary( houdiniPluginTarget, houdiniPluginSources, SHLIBPREFIX="" )
		houdiniPluginInstall = houdiniPluginEnv.Install( os.path.dirname( houdiniPluginEnv.subst( "$INSTALL_HOUDINIPLUGIN_NAME" ) ), houdiniPlugin )
		houdiniPluginEnv.Depends( houdiniPlugin, corePythonModule )
		houdiniPluginEnv.AddPostAction( houdiniPluginInstall, lambda target, source, env : makeSymLinks( houdiniPluginEnv, houdiniPluginEnv["INSTALL_HOUDINIPLUGIN_NAME"] ) )
		houdiniPluginEnv.Alias( "install", houdiniPluginInstall )
		houdiniPluginEnv.Alias( "installHoudini", houdiniPluginInstall )

		#=====
		# build python module
		#=====
		houdiniPythonModuleEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( houdiniEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ),
			]
		)
		houdiniPythonModule = houdiniPythonModuleEnv.SharedLibrary( "python/IECoreHoudini/_IECoreHoudini", houdiniPythonSources )
		houdiniPythonModuleEnv.Depends( houdiniPythonModule, houdiniLib )
		houdiniPythonModuleInstall = houdiniPythonModuleEnv.Install( "$INSTALL_PYTHON_DIR/IECoreHoudini", houdiniPythonScripts + houdiniPythonModule )
		houdiniPythonModuleEnv.AddPostAction( "$INSTALL_PYTHON_DIR/IECoreHoudini", lambda target, source, env : makeSymLinks( houdiniPythonModuleEnv, houdiniPythonModuleEnv["INSTALL_PYTHON_DIR"] ) )
		houdiniPythonModuleEnv.Alias( "install", houdiniPythonModuleInstall )
		houdiniPythonModuleEnv.Alias( "installHoudini", houdiniPythonModuleInstall )

		#=====
		# build otls
		#=====
		otlPath = "otls/IECoreHoudini/ieCoreHoudini"
		buildPath = "otls/IECoreHoudini/build"
		otlTarget = "plugins/houdini/" + os.path.basename( houdiniPluginEnv.subst( "$IECORE_NAME" ) ) + ".otl"
		otlCommand = houdiniPluginEnv.Command( otlTarget, otlPath, "cp -r %s %s; $HOUDINI_BIN_PATH/hotl -C %s $TARGET; rm -rf %s" % ( otlPath, buildPath, buildPath, buildPath ) )
		houdiniPluginEnv.Depends( otlTarget, glob.glob( otlPath + "/*" ) + glob.glob( otlPath + "/*/*" ) + glob.glob( otlPath + "/*/*/*" ) + glob.glob( otlPath + "/*/*/*/*" ) )
		otlInstall = houdiniPluginEnv.Install( "$INSTALL_HOUDINIOTL_DIR", source=[ otlTarget ] )
		houdiniPluginEnv.AddPostAction( "$INSTALL_HOUDINIOTL_DIR", lambda target, source, env : makeSymLinks( houdiniPluginEnv, houdiniPluginEnv["INSTALL_HOUDINIOTL_DIR"] ) )
		houdiniPluginEnv.Alias( "install", otlInstall )
		houdiniPluginEnv.Alias( "installHoudini", otlInstall )

		#=====
		# build IECoreMantra
		#=====
		if env["WITH_MANTRA"] :

			# library
			mantraLib = mantraEnv.SharedLibrary( "lib/" + os.path.basename( mantraEnv.subst( "$INSTALL_MANTRALIB_NAME" ) ), mantraSources )
			mantraLibInstall = mantraEnv.Install( os.path.dirname( mantraEnv.subst( "$INSTALL_MANTRALIB_NAME" ) ), mantraLib )
			mantraEnv.NoCache( mantraLibInstall )
			mantraEnv.AddPostAction( mantraLibInstall, lambda target, source, env : makeLibSymLinks( mantraEnv, "INSTALL_MANTRALIB_NAME" ) )
			mantraEnv.Alias( "install", mantraLibInstall )
			mantraEnv.Alias( "installMantra", mantraLibInstall )

			# headers
			mantraHeaderInstall = mantraEnv.Install( "$INSTALL_HEADER_DIR/IECoreMantra", mantraHeaders )
			mantraHeaderInstall += mantraEnv.Install( "$INSTALL_HEADER_DIR/IECoreMantra/bindings", mantraBindingHeaders )
			mantraEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreMantra", lambda target, source, env : makeSymLinks( mantraEnv, mantraEnv["INSTALL_HEADER_DIR"] ) )
			mantraEnv.Alias( "install", mantraHeaderInstall )
			mantraEnv.Alias( "installMantra", mantraHeaderInstall )

			# VRAY_ieProcedural.dso
			mantraProceduralEnv.Append(
				LIBS = [
					os.path.basename( mantraEnv.subst( "$INSTALL_MANTRALIB_NAME" ) ),
				],
			)
			mantraProceduralTarget = "contrib/IECoreMantra/plugins/houdini/dso/mantra/" + os.path.basename( mantraProceduralEnv.subst( "$INSTALL_MANTRAPROCEDURAL_NAME" ) )
			mantraProcedural = mantraProceduralEnv.SharedLibrary( mantraProceduralTarget, mantraProceduralSources, SHLIBPREFIX="" )
			mantraProceduralInstall = mantraProceduralEnv.Install( os.path.dirname( mantraProceduralEnv.subst( "$INSTALL_MANTRAPROCEDURAL_NAME" ) ), mantraProcedural )
			mantraProceduralEnv.Depends( mantraProcedural, mantraLib )
			mantraProceduralEnv.AddPostAction( mantraProceduralInstall, lambda target, source, env : makeSymLinks( mantraProceduralEnv, mantraProceduralEnv["INSTALL_MANTRAPROCEDURAL_NAME"] ) )
			mantraProceduralEnv.Alias( "install", mantraProceduralInstall )
			mantraProceduralEnv.Alias( "installMantra", mantraProceduralInstall )

			# VRAY_ieWorld dso
			mantraWorldEnv.Append(
				LIBS = [
					os.path.basename( mantraEnv.subst( "$INSTALL_MANTRALIB_NAME" ) ),
				],
			)
			mantraWorldTarget = "contrib/IECoreMantra/plugins/houdini/dso/mantra/" + os.path.basename( mantraWorldEnv.subst( "$INSTALL_MANTRAPROCEDURAL_NAME" ) )
			mantraWorld = mantraWorldEnv.SharedLibrary( mantraWorldTarget, mantraWorldSources, SHLIBPREFIX="" )
			mantraWorldInstall = mantraWorldEnv.Install( os.path.dirname( mantraWorldEnv.subst( "$INSTALL_MANTRAPROCEDURAL_NAME" ) ), mantraWorld )
			mantraWorldEnv.Depends( mantraProcedural, mantraLib )
			mantraWorldEnv.AddPostAction( mantraWorldInstall, lambda target, source, env : makeSymLinks( mantraWorldEnv, mantraWorldEnv["INSTALL_MANTRAPROCEDURAL_NAME"] ) )
			mantraWorldEnv.Alias( "install", mantraWorldInstall )
			mantraWorldEnv.Alias( "installMantra", mantraWorldInstall )

			# VRAYprocedural menu
			mantraVrayInclude = 'contrib/IECoreMantra/src/IECoreMantra/procedural/VRAYprocedural'
			mantraVrayInstall = mantraProceduralEnv.Install( mantraProceduralEnv.subst( "$INSTALL_HOUDINIMENU_DIR" ), source=[ mantraVrayInclude ] )
			mantraVrayForTest = mantraProceduralEnv.Command( "contrib/IECoreMantra/plugins/houdini/VRAYprocedural", mantraVrayInclude, Copy( "$TARGET", "$SOURCE" ) )
			mantraProceduralEnv.Alias( "install", mantraVrayInstall )
			mantraProceduralEnv.Alias( "installMantra", mantraVrayInstall )

			# python
			mantraPythonModuleEnv.Append(
				LIBS = [
					os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
					os.path.basename( mantraEnv.subst( "$INSTALL_MANTRALIB_NAME" ) ),
					os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ),
				]
			)
			mantraPythonModule = mantraPythonModuleEnv.SharedLibrary( "contrib/IECoreMantra/python/IECoreMantra/_IECoreMantra", mantraPythonSources )
			mantraPythonModuleEnv.Depends( mantraPythonModule, mantraLib )
			mantraPythonModuleInstall = mantraPythonModuleEnv.Install( "$INSTALL_PYTHON_DIR/IECoreMantra", mantraPythonScripts + mantraPythonModule )
			mantraPythonModuleEnv.AddPostAction( "$INSTALL_PYTHON_DIR/IECoreMantra", lambda target, source, env : makeSymLinks( mantraPythonModuleEnv, mantraPythonModuleEnv["INSTALL_PYTHON_DIR"] ) )
			mantraPythonModuleEnv.Alias( "install", mantraPythonModuleInstall )
			mantraPythonModuleEnv.Alias( "installMantra", mantraPythonModuleInstall )

			# otls
			otlPath = "contrib/IECoreMantra/otls/IECoreMantra/ieCoreMantra"
			buildPath = "contrib/IECoreMantra/otls/IECoreMantra/build"
			otlTarget = "contrib/IECoreMantra/plugins/houdini/otls/" + os.path.basename( mantraEnv.subst( "$IECORE_NAME" ) ) + ".otl"
			mantraOtlCommand = mantraEnv.Command( otlTarget, otlPath, "cp -r %s %s; $HOUDINI_BIN_PATH/hotl -C %s $TARGET; rm -rf %s" % ( otlPath, buildPath, buildPath, buildPath ) )
			mantraEnv.Depends( otlTarget, glob.glob( otlPath + "/*" ) + glob.glob( otlPath + "/*/*" ) + glob.glob( otlPath + "/*/*/*" ) + glob.glob( otlPath + "/*/*/*/*" ) )
			otlInstall = mantraEnv.Install( "$INSTALL_HOUDINIOTL_DIR", source=[ otlTarget ] )
			mantraEnv.AddPostAction( "$INSTALL_HOUDINIOTL_DIR", lambda target, source, env : makeSymLinks( mantraEnv, mantraEnv["INSTALL_HOUDINIOTL_DIR"] ) )
			mantraEnv.Alias( "install", otlInstall )
			mantraEnv.Alias( "installMantra", otlInstall )
			Default( [ mantraLib, mantraProcedural, mantraWorld, mantraPythonModule, mantraOtlCommand, mantraVrayForTest ] )

			# test
			mantraTestEnv = testEnv.Clone()

			mantraTestLibPaths = mantraEnv.subst( ":".join( mantraPythonModuleEnv["LIBPATH"] ) )
			if haveRI :
				mantraTestLibPaths += ":" + mantraEnv.subst( "$RMAN_ROOT/lib" )
			mantraTestEnv["ENV"][mantraTestEnv["TEST_LIBRARY_PATH_ENV_VAR"]] += ":" + mantraTestLibPaths
			mantraTestEnv["ENV"][libraryPathEnvVar] += ":" + mantraTestLibPaths

			mantraTestEnv["ENV"]["PATH"] = mantraEnv.subst( "$HOUDINI_ROOT/bin:" ) + mantraEnv["ENV"]["PATH"]

			mantraTestEnv.Append( **houdiniEnvAppends )
			mantraTestEnv.Append(
				LIBS = [
					os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
					os.path.basename( mantraEnv.subst( "$INSTALL_MANTRALIB_NAME" ) ),
				]
			)

			mantraTestEnv["ENV"]["PYTHONPATH"] += ":./python:./contrib/IECoreMantra/python"
			mantraTestEnv["ENV"]["HOUDINI_PATH"] = "./contrib/IECoreMantra/plugins/houdini:&" # pickup the VRAYprocedural include file
			mantraTestEnv["ENV"]["HOUDINI_DSO_PATH"] = "./plugins/houdini:./contrib/IECoreMantra/plugins/houdini/dso:&"
			mantraTestEnv["ENV"]["HOUDINI_OTLSCAN_PATH"] = "./plugins/houdini:./contrib/IECoreMantra/plugins/houdini/otls:&"

			mantraTestEnv["ENV"]["IECORE_OP_PATHS"] = "./contrib/IECoreMantra/test/IECoreMantra/ops"
			mantraTestEnv["ENV"]["IECORE_PROCEDURAL_PATHS"] = "./contrib/IECoreMantra/test/IECoreMantra/procedurals"

			mantraPythonExecutable = "hython"

			mantraPythonTest = mantraTestEnv.Command( "contrib/IECoreMantra/test/IECoreMantra/resultsPython.txt", mantraPythonModule, mantraPythonExecutable + " $TEST_MANTRA_SCRIPT" )
			NoCache( mantraPythonTest )
			mantraTestEnv.Depends( mantraPythonTest, [ mantraLib, mantraProcedural, mantraWorld, mantraPythonModule, mantraOtlCommand, mantraVrayForTest ] )
			mantraTestEnv.Depends( mantraPythonTest, glob.glob( "contrib/IECoreMantra/test/IECoreMantra/*.py" ) )
			mantraTestEnv.Depends( mantraPythonTest, glob.glob( "contrib/IECoreMantra/python/IECoreMantra/*.py" ) )
			if env["WITH_GL"] :
				mantraTestEnv.Depends( mantraPythonTest, [ glLibrary, glPythonModule ] )
			mantraTestEnv.Alias( "testMantra", mantraPythonTest )
			mantraTestEnv.Alias( "testMantraPython", mantraPythonTest )

		#=====
		# install icons
		#=====
		houdiniIcons = glob.glob( "icons/IECoreHoudini/*.svg" ) + glob.glob( "graphics/CortexLogo*.svg" )
		houdiniIconInstall = houdiniPluginEnv.Install( "$INSTALL_HOUDINIICON_DIR", source=houdiniIcons )
		houdiniPluginEnv.Alias( "install", houdiniIconInstall )
		houdiniPluginEnv.Alias( "installHoudini", houdiniIconInstall )

		#=====
		# install toolbar
		#=====
		houdiniToolbars = glob.glob( "menus/IECoreHoudini/*.shelf" )
		houdiniToolbarInstall = houdiniPluginEnv.Install( "$INSTALL_HOUDINITOOLBAR_DIR", source=houdiniToolbars )
		houdiniPluginEnv.Alias( "install", houdiniToolbarInstall )
		houdiniPluginEnv.Alias( "installHoudini", houdiniToolbarInstall )

		if coreEnv["INSTALL_COREHOUDINI_POST_COMMAND"] != "" :
			# this is the only way we could find to get a post action to run for an alias
			houdiniPythonModuleEnv.Alias( "install", houdiniPythonModuleInstall, "$INSTALL_COREHOUDINI_POST_COMMAND" )
			houdiniPythonModuleEnv.Alias( "installHoudini", houdiniPythonModuleInstall, "$INSTALL_COREHOUDINI_POST_COMMAND" )

		Default( [ houdiniLib, houdiniPlugin, houdiniPythonModule, otlCommand ] )

		#=====
		# Houdini tests
		#=====
		houdiniTestEnv = testEnv.Clone()

		houdiniTestLibPaths = houdiniEnv.subst( ":".join( houdiniPythonModuleEnv["LIBPATH"] ) )
		if haveRI :
			houdiniTestLibPaths += ":" + houdiniEnv.subst( "$RMAN_ROOT/lib" )
		houdiniTestEnv["ENV"][houdiniTestEnv["TEST_LIBRARY_PATH_ENV_VAR"]] += ":" + houdiniTestLibPaths
		houdiniTestEnv["ENV"][libraryPathEnvVar] += ":" + houdiniTestLibPaths

		houdiniTestEnv["ENV"]["PATH"] = houdiniEnv.subst( "$HOUDINI_ROOT/bin:" ) + houdiniEnv["ENV"]["PATH"]

		houdiniTestEnv.Append( **houdiniEnvAppends )
		houdiniTestEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( houdiniEnv.subst( "$INSTALL_LIB_NAME" ) ),
			]
		)

		houdiniTestEnv["ENV"]["PYTHONPATH"] += ":./python"
		houdiniTestEnv["ENV"]["HOUDINI_DSO_PATH"] = "./plugins/houdini:&"
		houdiniTestEnv["ENV"]["HOUDINI_OTLSCAN_PATH"] = "./plugins/houdini:&"

		houdiniTestEnv["ENV"]["IECORE_OP_PATHS"] = "./test/IECoreHoudini/ops"
		houdiniTestEnv["ENV"]["IECORE_PROCEDURAL_PATHS"] = "./test/IECoreHoudini/procedurals"

		houdiniPythonExecutable = "hython"

		houdiniPythonTest = houdiniTestEnv.Command( "test/IECoreHoudini/resultsPython.txt", houdiniPythonModule, houdiniPythonExecutable + " $TEST_HOUDINI_SCRIPT" )
		NoCache( houdiniPythonTest )
		houdiniTestEnv.Depends( houdiniPythonTest, [ houdiniLib, houdiniPlugin, houdiniPythonModule, otlCommand ] )
		houdiniTestEnv.Depends( houdiniPythonTest, glob.glob( "test/IECoreHoudini/*.py" ) )
		houdiniTestEnv.Depends( houdiniPythonTest, glob.glob( "python/IECoreHoudini/*.py" ) )
		if env["WITH_GL"] :
			houdiniTestEnv.Depends( houdiniPythonTest, [ glLibrary, glPythonModule ] )
		houdiniTestEnv.Alias( "testHoudini", houdiniPythonTest )
		houdiniTestEnv.Alias( "testHoudiniPython", houdiniPythonTest )


###########################################################################################
# Build and install the coreTruelight library and headers
###########################################################################################

truelightEnv = env.Clone( IECORE_NAME = "IECoreTruelight" )
truelightEnv.Append( LIBS = [ "truelight" ] )

# Remove all the boost and OpenEXR libs for the configure state- if we don't do this then the configure test can fail for some compilers.
# \todo Need to establish exactly what is going on here.
oldTruelightLibs = list( truelightEnv["LIBS"] )
truelightEnv["LIBS"] = [ x for x in truelightEnv["LIBS"] if ( x.find( "boost_" ) == -1 and x.find( "Ilm" ) == -1 and x.find( "Iex" ) == -1 and x.find( "Half" )==-1 and x.find( "Imath" )==-1 ) ]

truelightEnv.Append( CXXFLAGS = [ "-isystem", "$TRUELIGHT_ROOT/include" ] )
truelightEnv.Prepend( LIBPATH = [
		"$TRUELIGHT_ROOT/lib"
	]
)

truelightPythonModuleEnv = pythonModuleEnv.Clone( IECORE_NAME="IECoreTruelight" )

if doConfigure :

	c = Configure( truelightEnv )

	if not c.CheckLibWithHeader( "truelight", "truelight.h", "CXX" ) :

		sys.stderr.write( "WARNING : no truelight devkit found, not building IECoreTruelight - check TRUELIGHT_ROOT.\n" )
		c.Finish()

	else :

		c.Finish()

		truelightEnv["LIBS"] = oldTruelightLibs

		# we can't add this earlier as then it's built during the configure stage, and that's no good
		truelightEnv.Append( LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ) )

		truelightHeaders = glob.glob( "include/IECoreTruelight/*.h" ) + glob.glob( "include/IECoreTruelight/*.inl" )
		truelightSources = sorted( glob.glob( "src/IECoreTruelight/*.cpp" ) )
		truelightPythonSources = sorted( glob.glob( "src/IECoreTruelight/bindings/*.cpp" ) )
		truelightPythonScripts = glob.glob( "python/IECoreTruelight/*.py" )

		# library
		truelightLibrary = truelightEnv.SharedLibrary( "lib/" + os.path.basename( truelightEnv.subst( "$INSTALL_LIB_NAME" ) ), truelightSources )
		truelightEnv.Depends( truelightLibrary, coreLibrary )
		truelightLibraryInstall = truelightEnv.Install( os.path.dirname( truelightEnv.subst( "$INSTALL_LIB_NAME" ) ), truelightLibrary )
		truelightEnv.NoCache( truelightLibraryInstall )
		truelightEnv.AddPostAction( truelightLibraryInstall, lambda target, source, env : makeLibSymLinks( truelightEnv ) )
		truelightEnv.Alias( "install", truelightLibraryInstall )
		truelightEnv.Alias( "installTruelight", truelightLibraryInstall )
		truelightEnv.Alias( "installLib", [ truelightLibraryInstall ] )

		# headers
		truelightHeaderInstall = truelightEnv.Install( "$INSTALL_HEADER_DIR/IECoreTruelight", truelightHeaders )
		truelightEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreTruelight", lambda target, source, env : makeSymLinks( truelightEnv, truelightEnv["INSTALL_HEADER_DIR"] ) )
		truelightEnv.Alias( "installTruelight", truelightHeaderInstall )
		truelightEnv.Alias( "install", truelightHeaderInstall )

		# python
		truelightPythonModuleEnv.Append( LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( truelightEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ),
			]
		)

		truelightPythonModule = truelightPythonModuleEnv.SharedLibrary( "python/IECoreTruelight/_IECoreTruelight", truelightPythonSources )
		truelightPythonModuleEnv.Depends( truelightPythonModule, corePythonModule )
		truelightPythonModuleEnv.Depends( truelightPythonModule, truelightLibrary )

		truelightPythonModuleInstall = truelightPythonModuleEnv.Install( "$INSTALL_PYTHON_DIR/IECoreTruelight", truelightPythonScripts + truelightPythonModule )
		truelightPythonModuleEnv.AddPostAction( "$INSTALL_PYTHON_DIR/IECoreTruelight", lambda target, source, env : makeSymLinks( truelightPythonModuleEnv, truelightPythonModuleEnv["INSTALL_PYTHON_DIR"] ) )
		truelightPythonModuleEnv.Alias( "install", truelightPythonModuleInstall )
		truelightPythonModuleEnv.Alias( "installTruelight", truelightPythonModuleInstall )

		if coreEnv["INSTALL_CORETRUELIGHT_POST_COMMAND"]!="" :
			# this is the only way we could find to get a post action to run for an alias
			truelightEnv.Alias( "install", truelightLibraryInstall, "$INSTALL_CORETRUELIGHT_POST_COMMAND" )
			truelightEnv.Alias( "installTruelight", truelightLibraryInstall, "$INSTALL_CORETRUELIGHT_POST_COMMAND" )

		Default( [ truelightLibrary, truelightPythonModule ] )

		# tests
		truelightTestEnv = testEnv.Clone()
		truelightTestEnv["ENV"]["TRUELIGHT_ROOT"] = truelightEnv.subst( "$TRUELIGHT_ROOT" )
		truelightTest = truelightTestEnv.Command( "test/IECoreTruelight/results.txt", truelightPythonModule, pythonExecutable + " $TEST_TRUELIGHT_SCRIPT" )
		NoCache( truelightTest )
		truelightTestEnv.Depends( truelightTest, truelightPythonModule )
		truelightTestEnv.Depends( truelightTest, glob.glob( "test/IECoreTruelight/*.py" ) )
		truelightTestEnv.Alias( "testTruelight", truelightTest )

###########################################################################################
# Build, install and test the IECoreArnold library and bindings
###########################################################################################

arnoldEnv = coreEnv.Clone( IECORE_NAME = "IECoreArnold" )
arnoldEnv.Append(
	CXXFLAGS = [
		"-isystem", "$ARNOLD_ROOT/include",
	],
	CPPPATH = [
		"contrib/IECoreArnold/include",
	]
)
arnoldEnv.Append( LIBPATH = [ "$ARNOLD_ROOT/bin" ] )

arnoldPythonModuleEnv = pythonModuleEnv.Clone( IECORE_NAME = "IECoreArnold" )
arnoldPythonModuleEnv.Append(
	CXXFLAGS = [
		"-isystem", "$ARNOLD_ROOT/include",
	],
	CPPPATH = [
		"contrib/IECoreArnold/include",
		"contrib/IECoreArnold/include/bindings",
	]
)
arnoldPythonModuleEnv.Append( LIBPATH = [ "$ARNOLD_ROOT/bin" ] )

arnoldProceduralEnv = arnoldPythonModuleEnv.Clone( IECORE_NAME = "ieProcedural" )
arnoldProceduralEnv["SHLIBPREFIX"] = ""
arnoldProceduralEnv["SHLIBSUFFIX"] = ".so"

arnoldDriverEnv = arnoldEnv.Clone( IECORE_NAME = "ieOutputDriver" )
arnoldDriverEnv["SHLIBPREFIX"] = ""
arnoldDriverEnv["SHLIBSUFFIX"] = ".so"

haveArnold = False

if doConfigure :

	# Since we only build shared libraries and not exectuables,
	# we only need to check that shared libs will link correctly.
	# This is necessary for arnold, which uses
	# a run-time compatible, but link-time incompatbile libstdc++
	# in some obscure studio setups. This approach succeeds because
	# building a shared library doesn't require resolving the
	# unresolved symbols of the libraries that it links to.
	arnoldCheckEnv = arnoldEnv.Clone()
	arnoldCheckEnv.Append( CXXFLAGS = [ "-fPIC" ] )
	arnoldCheckEnv.Append( LINKFLAGS = [ "-shared" ] )
	c = Configure( arnoldCheckEnv )

	if not c.CheckLibWithHeader( "ai", "ai.h", "CXX" ) :

		sys.stderr.write( "WARNING : no ai library found, not building IECoreArnold - check ARNOLD_ROOT.\n" )
		c.Finish()

	else :

		haveArnold = True

		arnoldSources = sorted( glob.glob( "contrib/IECoreArnold/src/IECoreArnold/*.cpp" ) )
		arnoldHeaders = glob.glob( "contrib/IECoreArnold/include/IECoreArnold/*.h" ) + glob.glob( "contrib/IECoreArnold/include/IECoreArnold/*.inl" )
		arnoldPythonSources = sorted( glob.glob( "contrib/IECoreArnold/src/IECoreArnold/bindings/*.cpp" ) )
		arnoldPythonScripts = glob.glob( "contrib/IECoreArnold/python/IECoreArnold/*.py" )

		c.Finish()

		# we can't append this before configuring, as then it gets built as
		# part of the configure process
		arnoldEnv.Append(
			LIBS = [
				"ai",
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) )
			]
		 )
		arnoldPythonModuleEnv.Append( LIBS = os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ) )
		arnoldProceduralEnv.Append(
			LIBS = [
				"ai",
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( arnoldEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ),
			]
		)

		arnoldDriverEnv.Append(
			LIBS = [
				"ai",
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( arnoldEnv.subst( "$INSTALL_LIB_NAME" ) ),
			]
		)

		# library
		arnoldLibrary = arnoldEnv.SharedLibrary( "lib/" + os.path.basename( arnoldEnv.subst( "$INSTALL_ARNOLDLIB_NAME" ) ), arnoldSources )
		arnoldLibraryInstall = arnoldEnv.Install( os.path.dirname( arnoldEnv.subst( "$INSTALL_ARNOLDLIB_NAME" ) ), arnoldLibrary )
		arnoldEnv.NoCache( arnoldLibraryInstall )
		arnoldEnv.AddPostAction( arnoldLibraryInstall, lambda target, source, env : makeLibSymLinks( arnoldEnv ) )
		arnoldEnv.Alias( "install", arnoldLibraryInstall )
		arnoldEnv.Alias( "installArnold", arnoldLibraryInstall )
		arnoldEnv.Alias( "installLib", [ arnoldLibraryInstall ] )

		# headers
		arnoldHeaderInstall = arnoldEnv.Install( "$INSTALL_HEADER_DIR/IECoreArnold", arnoldHeaders )
		arnoldEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreArnold", lambda target, source, env : makeSymLinks( arnoldEnv, arnoldEnv["INSTALL_HEADER_DIR"] ) )
		arnoldEnv.Alias( "install", arnoldHeaderInstall )
		arnoldEnv.Alias( "installArnold", arnoldHeaderInstall )

		# python module
		arnoldPythonModuleEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( arnoldEnv.subst( "$INSTALL_LIB_NAME" ) ),
			]
		)
		arnoldPythonModule = arnoldPythonModuleEnv.SharedLibrary( "contrib/IECoreArnold/python/IECoreArnold/_IECoreArnold", arnoldPythonSources )
		arnoldPythonModuleEnv.Depends( arnoldPythonModule, arnoldLibrary )

		arnoldPythonModuleInstall = arnoldPythonModuleEnv.Install( "$INSTALL_ARNOLDPYTHON_DIR/IECoreArnold", arnoldPythonScripts + arnoldPythonModule )
		arnoldPythonModuleEnv.AddPostAction( "$INSTALL_ARNOLDPYTHON_DIR/IECoreArnold", lambda target, source, env : makeSymLinks( arnoldPythonModuleEnv, arnoldPythonModuleEnv["INSTALL_ARNOLDPYTHON_DIR"] ) )
		arnoldPythonModuleEnv.Alias( "install", arnoldPythonModuleInstall )
		arnoldPythonModuleEnv.Alias( "installArnold", arnoldPythonModuleInstall )

		# procedural
		arnoldProcedural = arnoldProceduralEnv.SharedLibrary( "contrib/IECoreArnold/src/IECoreArnold/procedural/" + os.path.basename( arnoldProceduralEnv.subst( "$INSTALL_ARNOLDPROCEDURAL_NAME" ) ), "contrib/IECoreArnold/src/IECoreArnold/procedural/Procedural.cpp" )
		arnoldProceduralInstall = arnoldProceduralEnv.Install( os.path.dirname( arnoldProceduralEnv.subst( "$INSTALL_ARNOLDPROCEDURAL_NAME" ) ), arnoldProcedural )
		arnoldProceduralEnv.NoCache( arnoldProceduralInstall )
		arnoldProceduralEnv.AddPostAction( arnoldProceduralInstall, lambda target, source, env : makeLibSymLinks( arnoldProceduralEnv, libNameVar="INSTALL_ARNOLDPROCEDURAL_NAME" ) )
		arnoldProceduralEnv.Alias( "install", arnoldProceduralInstall )
		arnoldProceduralEnv.Alias( "installArnold", arnoldProceduralInstall )
		arnoldProceduralForTest = arnoldProceduralEnv.Command( "contrib/IECoreArnold/test/IECoreArnold/plugins/ieProcedural.so", arnoldProcedural, Copy( "$TARGET", "$SOURCE" ) )

		# output driver
		arnoldDriver = arnoldDriverEnv.SharedLibrary( "contrib/IECoreArnold/src/IECoreArnold/outputDriver/" + os.path.basename( arnoldDriverEnv.subst( "$INSTALL_ARNOLDOUTPUTDRIVER_NAME" ) ), "contrib/IECoreArnold/src/IECoreArnold/outputDriver/OutputDriver.cpp" )
		arnoldDriverInstall = arnoldDriverEnv.Install( os.path.dirname( arnoldDriverEnv.subst( "$INSTALL_ARNOLDOUTPUTDRIVER_NAME" ) ), arnoldDriver )
		arnoldDriverEnv.NoCache( arnoldDriverInstall )
		arnoldDriverEnv.AddPostAction( arnoldDriverInstall, lambda target, source, env : makeLibSymLinks( arnoldDriverEnv, libNameVar="INSTALL_ARNOLDOUTPUTDRIVER_NAME" ) )
		arnoldDriverEnv.Alias( "install", arnoldDriverInstall )
		arnoldDriverEnv.Alias( "installArnold", arnoldDriverInstall )
		arnoldDriverForTest = arnoldDriverEnv.Command( "contrib/IECoreArnold/test/IECoreArnold/plugins/ieOutputDriver.so", arnoldDriver, Copy( "$TARGET", "$SOURCE" ) )

		Default( [ arnoldLibrary, arnoldPythonModule, arnoldProcedural, arnoldProceduralForTest, arnoldDriver, arnoldDriverForTest ] )

		# tests
		arnoldTestEnv = testEnv.Clone()
		arnoldTestEnv["ENV"]["PYTHONPATH"] += ":./contrib/IECoreArnold/python:" + arnoldEnv.subst( "$ARNOLD_ROOT/python" )
		arnoldTestEnv["ENV"][testEnv["TEST_LIBRARY_PATH_ENV_VAR"]] += ":" + arnoldEnv.subst( ":".join( arnoldPythonModuleEnv["LIBPATH"] ) )
		arnoldTestEnv["ENV"]["PATH"] = arnoldEnv.subst( "$ARNOLD_ROOT/bin" ) + ":" + arnoldTestEnv["ENV"]["PATH"]
		arnoldTestEnv["ENV"]["ARNOLD_PLUGIN_PATH"] = "contrib/IECoreArnold/test/IECoreArnold/plugins"
		arnoldTest = arnoldTestEnv.Command( "contrib/IECoreArnold/test/IECoreArnold/results.txt", arnoldPythonModule, pythonExecutable + " $TEST_ARNOLD_SCRIPT" )
		NoCache( arnoldTest )
		arnoldTestEnv.Depends( arnoldTest, [ arnoldPythonModule + arnoldProceduralForTest + arnoldDriverForTest ] )
		arnoldTestEnv.Depends( arnoldTest, glob.glob( "contrib/IECoreArnold/test/IECoreArnold/*.py" ) )
		arnoldTestEnv.Alias( "testArnold", arnoldTest )

###########################################################################################
# Build, install and test the MtoA extension
###########################################################################################

mtoaEnv = mayaPluginEnv.Clone( IECORE_NAME = "ie" )
## \todo Remove MTOA_SOURCE_ROOT when it's no longer necessary
mtoaEnv.Append( CXXFLAGS = [ "-isystem", "$MTOA_ROOT/include", "-isystem", "$MTOA_SOURCE_ROOT/plugins/mtoa" ] )
mtoaEnv.Append( CXXFLAGS = [ "-isystem", "$ARNOLD_ROOT/include" ] )
mtoaEnv.Append( LIBPATH = [ "$MTOA_ROOT/bin" ] )
mtoaEnv.Append( CXXFLAGS = [ "-D_LINUX" ] )
mtoaEnv["SHLIBPREFIX"] = ""

if doConfigure and haveMaya and haveArnold :

	c = Configure( mtoaEnv )

	if not c.CheckCXXHeader( "translators/NodeTranslator.h" ) :

		sys.stderr.write( "WARNING : no MtoA headers found, not building extension - check MTOA_ROOT.\n" )
		c.Finish()

	else :

		c.Finish()

		mtoaEnv.Append( LIBS = [ "mtoa_api" ] )

		mtoaExtension = mtoaEnv.SharedLibrary( "contrib/IECoreArnold/src/IECoreArnold/mtoaExtension/" + os.path.basename( mtoaEnv.subst( "$INSTALL_MTOAEXTENSION_NAME" ) ), glob.glob( "contrib/IECoreArnold/src/IECoreArnold/mtoaExtension/*.cpp" ) )
		mtoaExtensionInstall = mtoaEnv.Install( os.path.dirname( mtoaEnv.subst( "$INSTALL_MTOAEXTENSION_NAME" ) ), mtoaExtension )
		mtoaEnv.NoCache( mtoaExtensionInstall )
		mtoaEnv.AddPostAction( mtoaExtensionInstall, lambda target, source, env : makeSymLinks( mtoaEnv, mtoaEnv["INSTALL_MTOAEXTENSION_NAME"] ) )
		mtoaEnv.Alias( "install", mtoaExtensionInstall )
		mtoaEnv.Alias( "installMtoA", mtoaExtensionInstall )

		Default( [ mtoaExtension ] )

###########################################################################################
# Build, install and test the IECoreAlembic library and bindings
###########################################################################################

alembicEnv = coreEnv.Clone( IECORE_NAME = "IECoreAlembic" )
alembicEnvAppends = {
	"CXXFLAGS" : [
		"-isystem", "$ALEMBIC_INCLUDE_PATH",
		"-isystem", "$HDF5_INCLUDE_PATH",
	],
	"CPPPATH" : [
		"contrib/IECoreAlembic/include",
	],
	"LIBPATH" : [
		"$ALEMBIC_LIB_PATH",
		"$HDF5_LIB_PATH",
	],
	"LIBS" : [
		"hdf5$HDF5_LIB_SUFFIX",
		"hdf5_hl$HDF5_LIB_SUFFIX",
	],
}
alembicEnv.Append( **alembicEnvAppends )

alembicPythonModuleEnv = pythonModuleEnv.Clone( IECORE_NAME = "IECoreAlembic" )
alembicPythonModuleEnv.Append( **alembicEnvAppends )

if doConfigure :

	c = Configure( alembicEnv )

	haveAlembic = False
	if c.CheckLibWithHeader( alembicEnv.subst( "Alembic" + env["ALEMBIC_LIB_SUFFIX"] ), "Alembic/AbcGeom/Foundation.h", "CXX" ) :

		# Alembic 1.6 and later is provided as a single library
		haveAlembic = True
		alembicEnv.Prepend(
			CPPFLAGS = "-DIECOREALEMBIC_WITH_OGAWA"
		)

	elif c.CheckLibWithHeader( alembicEnv.subst( "AlembicAbcGeom" + env["ALEMBIC_LIB_SUFFIX"] ), "Alembic/AbcGeom/Foundation.h", "CXX" ) :

		# Prior to 1.6, Alembic was provided as a bunch of individual libraries.
		haveAlembic = True
		alembicEnv.Append(
			LIBS = [
				"AlembicAbc$ALEMBIC_LIB_SUFFIX",
				"AlembicAbcCoreHDF5$ALEMBIC_LIB_SUFFIX",
				"AlembicAbcCoreAbstract$ALEMBIC_LIB_SUFFIX",
				"AlembicUtil$ALEMBIC_LIB_SUFFIX",
			],
		)

		if c.CheckLibWithHeader( alembicEnv.subst( "AlembicOgawa" + env["ALEMBIC_LIB_SUFFIX"] ), "Alembic/AbcCoreOgawa/ReadWrite.h", "CXX" ) :
			alembicEnv.Prepend(
				CPPFLAGS = "-DIECOREALEMBIC_WITH_OGAWA",
				LIBS = [
					"AlembicAbcCoreFactory$ALEMBIC_LIB_SUFFIX",
					"AlembicAbcCoreOgawa$ALEMBIC_LIB_SUFFIX",
					"AlembicOgawa$ALEMBIC_LIB_SUFFIX",
				]
			)

	else :

		sys.stderr.write( "WARNING : no Alembic library found, not building IECoreAlembic - check ALEMBIC_INCLUDE_PATH, ALEMBIC_LIB_PATH and config.log.\n" )

	c.Finish()

	if haveAlembic :

		alembicSources = sorted( glob.glob( "contrib/IECoreAlembic/src/IECoreAlembic/*.cpp" ) )
		alembicHeaders = glob.glob( "contrib/IECoreAlembic/include/IECoreAlembic/*.h" ) + glob.glob( "contrib/IECoreAlembic/include/IECoreAlembic/*.inl" )
		alembicPythonScripts = glob.glob( "contrib/IECoreAlembic/python/IECoreAlembic/*.py" )
		alembicPythonSources = sorted( glob.glob( "contrib/IECoreAlembic/src/IECoreAlembic/bindings/*.cpp" ) )

		# we can't append this before configuring, as then it gets built as
		# part of the configure process
		alembicEnv.Append( LIBS = os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ) )

		# library
		alembicLibrary = alembicEnv.SharedLibrary( "lib/" + os.path.basename( alembicEnv.subst( "$INSTALL_ALEMBICLIB_NAME" ) ), alembicSources )
		alembicLibraryInstall = alembicEnv.Install( os.path.dirname( alembicEnv.subst( "$INSTALL_ALEMBICLIB_NAME" ) ), alembicLibrary )
		alembicEnv.NoCache( alembicLibraryInstall )
		alembicEnv.AddPostAction( alembicLibraryInstall, lambda target, source, env : makeLibSymLinks( alembicEnv ) )
		alembicEnv.Alias( "install", alembicLibraryInstall )
		alembicEnv.Alias( "installAlembic", alembicLibraryInstall )
		alembicEnv.Alias( "installLib", [ alembicLibraryInstall ] )

		# headers
		alembicHeaderInstall = alembicEnv.Install( "$INSTALL_HEADER_DIR/IECoreAlembic", alembicHeaders )
		alembicEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreAlembic", lambda target, source, env : makeSymLinks( alembicEnv, alembicEnv["INSTALL_HEADER_DIR"] ) )
		alembicEnv.Alias( "install", alembicHeaderInstall )
		alembicEnv.Alias( "installAlembic", alembicHeaderInstall )

		# python module
		alembicPythonModuleEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ),
				os.path.basename( alembicEnv.subst( "$INSTALL_LIB_NAME" ) ),
			]
		)
		alembicPythonModule = alembicPythonModuleEnv.SharedLibrary( "contrib/IECoreAlembic/python/IECoreAlembic/_IECoreAlembic", alembicPythonSources )
		alembicPythonModuleEnv.Depends( alembicPythonModule, alembicLibrary )

		alembicPythonModuleInstall = alembicPythonModuleEnv.Install( "$INSTALL_PYTHON_DIR/IECoreAlembic", alembicPythonScripts + alembicPythonModule )
		alembicPythonModuleEnv.AddPostAction( "$INSTALL_PYTHON_DIR/IECoreAlembic", lambda target, source, env : makeSymLinks( alembicPythonModuleEnv, alembicPythonModuleEnv["INSTALL_PYTHON_DIR"] ) )
		alembicPythonModuleEnv.Alias( "install", alembicPythonModuleInstall )
		alembicPythonModuleEnv.Alias( "installAlembic", alembicPythonModuleInstall )

		Default( [ alembicLibrary, alembicPythonModule ] )

		# tests
		alembicTestEnv = testEnv.Clone()
		alembicTestEnv["ENV"]["PYTHONPATH"] += ":./contrib/IECoreAlembic/python"
		alembicTest = alembicTestEnv.Command( "contrib/IECoreAlembic/test/IECoreAlembic/results.txt", alembicPythonModule, pythonExecutable + " $TEST_ALEMBIC_SCRIPT" )
		NoCache( alembicTest )
		if haveArnold:
			alembicTestEnv.Depends( arnoldTest, glob.glob( "contrib/IECoreAlembic/test/IECoreAlembic/*.py" ) )
		alembicTestEnv.Alias( "testAlembic", alembicTest )

###########################################################################################
# Build, install and test the IECoreAppleseed library and bindings
###########################################################################################

appleseedEnv = coreEnv.Clone( IECORE_NAME = "IECoreAppleseed" )
appleseedEnv.Append(
	CXXFLAGS = [
		"-isystem", "$APPLESEED_INCLUDE_PATH",
		"-isystem", "$OSL_INCLUDE_PATH",
		"-isystem", "$OIIO_INCLUDE_PATH",
	],
	CPPPATH = [
		"contrib/IECoreAppleseed/include",
	],
	CPPFLAGS = [
		"-DAPPLESEED_ENABLE_IMATH_INTEROP",
		"-DAPPLESEED_WITH_OIIO",
		"-DAPPLESEED_WITH_OSL",
		"-DAPPLESEED_USE_SSE",
	],
)
appleseedEnv.Append( LIBPATH = [ "$APPLESEED_LIB_PATH", "$OSL_LIB_PATH", "$OIIO_LIB_PATH" ] )

appleseedPythonModuleEnv = pythonModuleEnv.Clone( IECORE_NAME = "IECoreAppleseed" )
appleseedPythonModuleEnv.Append(
	CXXFLAGS = [
		"-isystem", "$APPLESEED_INCLUDE_PATH",
		"-isystem", "$OSL_INCLUDE_PATH",
		"-isystem", "$OIIO_INCLUDE_PATH",
	],
	CPPPATH = [
		"contrib/IECoreAppleseed/include",
		"contrib/IECoreAppleseed/include/bindings",
	],
	CPPFLAGS = [
		"-DAPPLESEED_ENABLE_IMATH_INTEROP",
		"-DAPPLESEED_WITH_OIIO",
		"-DAPPLESEED_WITH_OSL",
		"-DAPPLESEED_USE_SSE",
	],
	LIBPATH = [
		"$APPLESEED_LIB_PATH",
		"$OSL_LIB_PATH"
		"$OIIO_LIB_PATH"
	],
)


appleseedDriverEnv = appleseedEnv.Clone( IECORE_NAME = "ieDisplay" )
appleseedDriverEnv["SHLIBPREFIX"] = ""
appleseedDriverEnv["SHLIBSUFFIX"] = ".so"

haveAppleseed = False

if doConfigure :

	# Since we only build shared libraries and not exectuables,
	# we only need to check that shared libs will link correctly.
	# This is necessary for appleseed, which uses
	# a run-time compatible, but link-time incompatbile libstdc++
	# in some obscure studio setups. This approach succeeds because
	# building a shared library doesn't require resolving the
	# unresolved symbols of the libraries that it links to.
	appleseedCheckEnv = appleseedEnv.Clone()
	appleseedCheckEnv.Append( CXXFLAGS = [ "-fPIC" ] )
	appleseedCheckEnv.Append( LINKFLAGS = [ "-shared" ] )
	c = Configure( appleseedCheckEnv )

	if not c.CheckLibWithHeader( "appleseed", "renderer/api/rendering.h", "CXX" ) :

		sys.stderr.write( "WARNING : no appleseed library found, not building IECoreAppleseed - check APPLESEED_INCLUDE_PATH and APPLESEED_LIB_PATH.\n" )
		c.Finish()

	else :

		haveAppleseed = True

		appleseedSources = sorted( glob.glob( "contrib/IECoreAppleseed/src/IECoreAppleseed/*.cpp" ) )
		appleseedHeaders = glob.glob( "contrib/IECoreAppleseed/include/IECoreAppleseed/*.h" ) + glob.glob( "contrib/IECoreAppleseed/include/IECoreAppleseed/*.inl" )
		appleseedPythonSources = sorted( glob.glob( "contrib/IECoreAppleseed/src/IECoreAppleseed/bindings/*.cpp" ) )
		appleseedPythonScripts = glob.glob( "contrib/IECoreAppleseed/python/IECoreAppleseed/*.py" )

		c.Finish()

		appleseedEnv.Append(
			LIBS = [
				"appleseed",
				# We can't append this before configuring, as then it gets built as
				# part of the configure process
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
			]
		)

		appleseedPythonModuleEnv.Append( LIBS = os.path.basename( corePythonEnv.subst( "$INSTALL_PYTHONLIB_NAME" ) ) )

		appleseedDriverEnv.Append(
			LIBS = [
				"appleseed",
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( appleseedEnv.subst( "$INSTALL_LIB_NAME" ) ),
			]
		)

		# library
		appleseedLibrary = appleseedEnv.SharedLibrary( "lib/" + os.path.basename( appleseedEnv.subst( "$INSTALL_APPLESEEDLIB_NAME" ) ), appleseedSources )
		appleseedLibraryInstall = appleseedEnv.Install( os.path.dirname( appleseedEnv.subst( "$INSTALL_APPLESEEDLIB_NAME" ) ), appleseedLibrary )
		appleseedEnv.NoCache( appleseedLibraryInstall )
		appleseedEnv.AddPostAction( appleseedLibraryInstall, lambda target, source, env : makeLibSymLinks( appleseedEnv ) )
		appleseedEnv.Alias( "install", appleseedLibraryInstall )
		appleseedEnv.Alias( "installAppleseed", appleseedLibraryInstall )
		appleseedEnv.Alias( "installLib", [ appleseedLibraryInstall ] )

		# headers
		appleseedHeaderInstall = appleseedEnv.Install( "$INSTALL_HEADER_DIR/IECoreAppleseed", appleseedHeaders )
		appleseedEnv.AddPostAction( "$INSTALL_HEADER_DIR/IECoreAppleseed", lambda target, source, env : makeSymLinks( appleseedEnv, appleseedEnv["INSTALL_HEADER_DIR"] ) )
		appleseedEnv.Alias( "install", appleseedHeaderInstall )
		appleseedEnv.Alias( "installAppleseed", appleseedHeaderInstall )

		# python module
		appleseedPythonModuleEnv.Append(
			LIBS = [
				os.path.basename( coreEnv.subst( "$INSTALL_LIB_NAME" ) ),
				os.path.basename( appleseedEnv.subst( "$INSTALL_LIB_NAME" ) ),
				"appleseed",
			]
		)
		appleseedPythonModule = appleseedPythonModuleEnv.SharedLibrary( "contrib/IECoreAppleseed/python/IECoreAppleseed/_IECoreAppleseed", appleseedPythonSources )
		appleseedPythonModuleEnv.Depends( appleseedPythonModule, appleseedLibrary )

		appleseedPythonModuleInstall = appleseedPythonModuleEnv.Install( "$INSTALL_PYTHON_DIR/IECoreAppleseed", appleseedPythonScripts + appleseedPythonModule )
		appleseedPythonModuleEnv.AddPostAction( "$INSTALL_PYTHON_DIR/IECoreAppleseed", lambda target, source, env : makeSymLinks( appleseedPythonModuleEnv, appleseedPythonModuleEnv["INSTALL_PYTHON_DIR"] ) )
		appleseedPythonModuleEnv.Alias( "install", appleseedPythonModuleInstall )
		appleseedPythonModuleEnv.Alias( "installAppleseed", appleseedPythonModuleInstall )


		# output driver
		appleseedDriver = appleseedDriverEnv.SharedLibrary( "contrib/IECoreAppleseed/src/IECoreAppleseed/outputDriver/" + os.path.basename( appleseedDriverEnv.subst( "$INSTALL_APPLESEEDOUTPUTDRIVER_NAME" ) ), "contrib/IECoreAppleseed/src/IECoreAppleseed/outputDriver/DisplayTileCallback.cpp" )
		appleseedDriverInstall = appleseedDriverEnv.Install( os.path.dirname( appleseedDriverEnv.subst( "$INSTALL_APPLESEEDOUTPUTDRIVER_NAME" ) ), appleseedDriver )
		appleseedDriverEnv.NoCache( appleseedDriverInstall )
		appleseedDriverEnv.AddPostAction( appleseedDriverInstall, lambda target, source, env : makeLibSymLinks( appleseedDriverEnv, libNameVar="INSTALL_APPLESEEDOUTPUTDRIVER_NAME" ) )
		appleseedDriverEnv.Alias( "install", appleseedDriverInstall )
		appleseedDriverEnv.Alias( "installAppleseed", appleseedDriverInstall )
		appleseedDriverForTest = appleseedDriverEnv.Command( "contrib/IECoreAppleseed/test/IECoreAppleseed/plugins/ieOutputDriver.so", appleseedDriver, Copy( "$TARGET", "$SOURCE" ) )

		Default( [ appleseedLibrary, appleseedPythonModule, appleseedDriver, appleseedDriverForTest ] )

		# tests
		appleseedTestEnv = testEnv.Clone()
		appleseedTestEnv["ENV"]["PYTHONPATH"] += ":./contrib/IECoreAppleseed/python" + ":" + appleseedEnv.subst( "$APPLESEED_LIB_PATH/python2.7" )
		appleseedTestEnv["ENV"][testEnv["TEST_LIBRARY_PATH_ENV_VAR"]] += ":" + appleseedEnv.subst( ":".join( appleseedPythonModuleEnv["LIBPATH"] ) )
		appleseedTestEnv["ENV"]["PATH"] = appleseedEnv.subst( "$APPLESEED_ROOT/bin" ) + ":" + appleseedTestEnv["ENV"]["PATH"]
		appleseedTestEnv["ENV"]["APPLESEED_PLUGIN_PATH"] = "contrib/IECoreAppleseed/test/IECoreAppleseed/plugins"
		appleseedTest = appleseedTestEnv.Command( "contrib/IECoreAppleseed/test/IECoreAppleseed/results.txt", appleseedPythonModule, pythonExecutable + " $TEST_APPLESEED_SCRIPT" )
		NoCache( appleseedTest )
		appleseedTestEnv.Depends( appleseedTest, [ appleseedPythonModule + appleseedDriverForTest ] )
		appleseedTestEnv.Depends( appleseedTest, glob.glob( "contrib/IECoreAppleseed/test/IECoreAppleseed/*.py" ) )
		appleseedTestEnv.Alias( "testAppleseed", appleseedTest )

###########################################################################################
# Documentation
###########################################################################################

docEnv = env.Clone()
docEnv["ENV"]["PATH"] = os.environ["PATH"]

if doConfigure :

	sys.stdout.write( "Checking for doxygen... " )

	if docEnv.WhereIs( docEnv["DOXYGEN"] ) :

		sys.stdout.write( "yes\n" )

		docs = docEnv.Command( "doc/html/index.html", "doc/config/Doxyfile", "sed s/!CORTEX_VERSION!/$IECORE_MAJORMINORPATCH_VERSION/g $SOURCE | $DOXYGEN -" )
		docEnv.NoCache( docs )

		for modulePath in ( "python/IECore", "python/IECoreRI", "python/IECoreGL", "python/IECoreNuke", "python/IECoreMaya", "python/IECoreHoudini" ) :

			module = os.path.basename( modulePath )
			mungedModule = docEnv.Command( "doc/python/" + module, modulePath + "/__init__.py", createDoxygenPython )
			docEnv.Depends( mungedModule, glob.glob( modulePath + "/*.py" ) )
			docEnv.Depends( docs, mungedModule )
			docEnv.NoCache( mungedModule )

		docEnv.Depends( docs, glob.glob( "include/*/*.h" ) )

		docEnv.Alias( "doc", "doc/html/index.html" )

		# \todo This won't reinstall the documentation if the directory already exists
		installDoc = docEnv.Install( "$INSTALL_DOC_DIR", "doc/html" )
		docEnv.Alias( "installDoc", installDoc )

	else:

		sys.stdout.write( "no\n" )
		sys.stderr.write( "WARNING : no doxygen binary found, not building documentation - check DOXYGEN\n" )