CMake: refresh building and external library handling of Cycles standalone

* Support precompiled libraries on Linux
* Add license headers
* Refactoring to deduplicate code

Includes work by Ray Molenkamp and Grische for precompiled libraries.

Ref D8769

1 files changed, 468 insertions, 81 deletions

diff --git a/intern/cycles/cmake/external_libs.cmake b/intern/cycles/cmake/external_libs.cmake
index b09f442bd16..e84dc7a1fca 100644
--- a/intern/cycles/cmake/external_libs.cmake
+++ b/intern/cycles/cmake/external_libs.cmake
@@ -1,83 +1,152 @@
+# Copyright 2011-2020 Blender Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+###########################################################################
+# Helper macros
 ###########################################################################
-# Precompiled libraries tips and hints, for find_package().
 
-if(CYCLES_STANDALONE_REPOSITORY)
-  if(APPLE OR WIN32)
-    include(precompiled_libs)
-  endif()
-endif()
+macro(_set_default variable value)
+	if(NOT ${variable})
+		set(${variable} ${value})
+	endif()
+endmacro()
 
 ###########################################################################
-# GLUT
+# Precompiled libraries detection
+#
+# Use precompiled libraries from Blender repository
+###########################################################################
 
-if(WITH_CYCLES_STANDALONE AND WITH_CYCLES_STANDALONE_GUI)
-  set(GLUT_ROOT_PATH ${CYCLES_GLUT})
+if(CYCLES_STANDALONE_REPOSITORY)
+  if(APPLE)
+    set(_cycles_lib_dir "${CMAKE_SOURCE_DIR}/../lib/darwin")
+  elseif(WIN32)
+    if(CMAKE_CL_64)
+      set(_cycles_lib_dir "${CMAKE_SOURCE_DIR}/../lib/win64_vc15")
+    else()
+      message(FATAL_ERROR "Unsupported Visual Studio Version")
+    endif()
+  else()
+    # Path to a locally compiled libraries.
+    set(LIBDIR_NAME ${CMAKE_SYSTEM_NAME}_${CMAKE_SYSTEM_PROCESSOR})
+    string(TOLOWER ${LIBDIR_NAME} LIBDIR_NAME)
+    set(LIBDIR_NATIVE_ABI ${CMAKE_SOURCE_DIR}/../lib/${LIBDIR_NAME})
 
-  find_package(GLUT)
-  message(STATUS "GLUT_FOUND=${GLUT_FOUND}")
+    # Path to precompiled libraries with known CentOS 7 ABI.
+    set(LIBDIR_CENTOS7_ABI ${CMAKE_SOURCE_DIR}/../lib/linux_centos7_x86_64)
 
-  include_directories(
-    SYSTEM
-    ${GLUT_INCLUDE_DIR}
-  )
-endif()
+    # Choose the best suitable libraries.
+    if(EXISTS ${LIBDIR_NATIVE_ABI})
+      set(_cycles_lib_dir ${LIBDIR_NATIVE_ABI})
+    elseif(EXISTS ${LIBDIR_CENTOS7_ABI})
+      set(_cycles_lib_dir ${LIBDIR_CENTOS7_ABI})
+      set(WITH_CXX11_ABI OFF)
 
-###########################################################################
-# GLEW
+      if(CMAKE_COMPILER_IS_GNUCC AND
+         CMAKE_C_COMPILER_VERSION VERSION_LESS 9.3)
+        message(FATAL_ERROR "GCC version must be at least 9.3 for precompiled libraries, found ${CMAKE_C_COMPILER_VERSION}")
+      endif()
+    endif()
 
-# Workaround for unconventional variable name use in Blender.
-if(NOT CYCLES_STANDALONE_REPOSITORY)
-  set(GLEW_INCLUDE_DIR "${GLEW_INCLUDE_PATH}")
-endif()
+    # Avoid namespace pollustion.
+    unset(LIBDIR_NATIVE_ABI)
+    unset(LIBDIR_CENTOS7_ABI)
+  endif()
+
+  if(EXISTS ${_cycles_lib_dir})
+    _set_default(BOOST_ROOT "${_cycles_lib_dir}/boost")
+    _set_default(BLOSC_ROOT_DIR "${_cycles_lib_dir}/blosc")
+    _set_default(EMBREE_ROOT_DIR "${_cycles_lib_dir}/embree")
+    _set_default(GLEW_ROOT_DIR "${_cycles_lib_dir}/glew")
+    _set_default(JPEG_ROOT "${_cycles_lib_dir}/jpeg")
+    _set_default(LLVM_ROOT_DIR "${_cycles_lib_dir}/llvm")
+    _set_default(OPENCOLORIO_ROOT_DIR "${_cycles_lib_dir}/opencolorio")
+    _set_default(OPENEXR_ROOT_DIR "${_cycles_lib_dir}/openexr")
+    _set_default(OPENIMAGEDENOISE_ROOT_DIR "${_cycles_lib_dir}/openimagedenoise")
+    _set_default(OPENIMAGEIO_ROOT_DIR "${_cycles_lib_dir}/openimageio")
+    _set_default(OPENJPEG_ROOT_DIR "${_cycles_lib_dir}/openjpeg")
+    _set_default(OPENSUBDIV_ROOT_DIR "${_cycles_lib_dir}/opensubdiv")
+    _set_default(OPENVDB_ROOT_DIR "${_cycles_lib_dir}/openvdb")
+    _set_default(OSL_ROOT_DIR "${_cycles_lib_dir}/osl")
+    _set_default(PNG_ROOT "${_cycles_lib_dir}/png")
+    _set_default(TBB_ROOT_DIR "${_cycles_lib_dir}/tbb")
+    _set_default(TIFF_ROOT "${_cycles_lib_dir}/tiff")
+    _set_default(ZLIB_ROOT "${_cycles_lib_dir}/zlib")
 
-if(WITH_CYCLES_STANDALONE)
-  set(CYCLES_APP_GLEW_LIBRARY ${BLENDER_GLEW_LIBRARIES})
+    # Ignore system libraries
+    set(CMAKE_IGNORE_PATH "${CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES};${CMAKE_SYSTEM_INCLUDE_PATH};${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES};${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES}")
+  else()
+    unset(_cycles_lib_dir)
+  endif()
 endif()
 
 ###########################################################################
-# CUDA
+# Zlib
+###########################################################################
 
-if(WITH_CYCLES_CUDA_BINARIES OR NOT WITH_CUDA_DYNLOAD)
-  find_package(CUDA) # Try to auto locate CUDA toolkit
-  if(CUDA_FOUND)
-    message(STATUS "CUDA nvcc = ${CUDA_NVCC_EXECUTABLE}")
+if(CYCLES_STANDALONE_REPOSITORY)
+  if(MSVC AND EXISTS ${_cycles_lib_dir})
+    set(ZLIB_INCLUDE_DIRS ${_cycles_lib_dir}/zlib/include)
+    set(ZLIB_LIBRARIES ${_cycles_lib_dir}/zlib/lib/libz_st.lib)
+    set(ZLIB_INCLUDE_DIR ${_cycles_lib_dir}/zlib/include)
+    set(ZLIB_LIBRARY ${_cycles_lib_dir}/zlib/lib/libz_st.lib)
+    set(ZLIB_DIR ${_cycles_lib_dir}/zlib)
+    set(ZLIB_FOUND ON)
   else()
-    message(STATUS "CUDA compiler not found, disabling WITH_CYCLES_CUDA_BINARIES")
-    set(WITH_CYCLES_CUDA_BINARIES OFF)
-    if(NOT WITH_CUDA_DYNLOAD)
-      message(STATUS "Additionally falling back to dynamic CUDA load")
-      set(WITH_CUDA_DYNLOAD ON)
-    endif()
+    find_package(ZLIB REQUIRED)
   endif()
 endif()
 
-# Packages which are being found by Blender when building from inside Blender
-# source code. but which we need to take care of when building Cycles from a
-# standalone repository
+###########################################################################
+# PThreads
+###########################################################################
+
 if(CYCLES_STANDALONE_REPOSITORY)
-  # PThreads
-  # TODO(sergey): Bloody exception, handled in precompiled_libs.cmake.
-  if(NOT WIN32)
+  if(MSVC AND EXISTS ${_cycles_lib_dir})
+    set(PTHREADS_LIBRARIES "${_cycles_lib_dir}/pthreads/lib/pthreadVC3.lib")
+    include_directories("${_cycles_lib_dir}/pthreads/include")
+  else()
     set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
     find_package(Threads REQUIRED)
     set(PTHREADS_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
   endif()
+endif()
 
-  ####
-  # OpenGL
+###########################################################################
+# OpenImageIO and image libraries
+###########################################################################
 
-  # TODO(sergey): We currently re-use the same variable name as we use
-  # in Blender. Ideally we need to make it CYCLES_GL_LIBRARIES.
-  find_package(OpenGL REQUIRED)
-  find_package(GLEW REQUIRED)
-  list(APPEND BLENDER_GL_LIBRARIES
-    "${OPENGL_gl_LIBRARY}"
-    "${OPENGL_glu_LIBRARY}"
-    "${GLEW_LIBRARY}"
-  )
+if(CYCLES_STANDALONE_REPOSITORY)
+  if(MSVC AND EXISTS ${_cycles_lib_dir})
+    add_definitions(
+      # OIIO changed the name of this define in newer versions
+      # we define both, so it would work with both old and new
+      # versions.
+      -DOIIO_STATIC_BUILD
+      -DOIIO_STATIC_DEFINE
+    )
+
+    # Special exceptions for libraries which needs explicit debug version
+    set(OPENIMAGEIO_LIBRARY
+      optimized ${OPENIMAGEIO_ROOT_DIR}/lib/OpenImageIO.lib
+      optimized ${OPENIMAGEIO_ROOT_DIR}/lib/OpenImageIO_Util.lib
+      debug ${OPENIMAGEIO_ROOT_DIR}/lib/OpenImageIO_d.lib
+      debug ${OPENIMAGEIO_ROOT_DIR}/lib/OpenImageIO_Util_d.lib
+    )
+  endif()
 
-  ####
-  # OpenImageIO
   find_package(OpenImageIO REQUIRED)
   if(OPENIMAGEIO_PUGIXML_FOUND)
     set(PUGIXML_INCLUDE_DIR "${OPENIMAGEIO_INCLUDE_DIR/OpenImageIO}")
@@ -86,37 +155,143 @@ if(CYCLES_STANDALONE_REPOSITORY)
     find_package(PugiXML REQUIRED)
   endif()
 
-  # OIIO usually depends on OpenEXR, so find this library
-  # but don't make it required.
-  find_package(OpenEXR)
+  # Dependencies
+  if(MSVC AND EXISTS ${_cycles_lib_dir})
+    set(OPENJPEG_INCLUDE_DIR ${OPENJPEG}/include/openjpeg-2.3)
+    set(OPENJPEG_LIBRARY ${_cycles_lib_dir}/openjpeg/lib/openjp2${CMAKE_STATIC_LIBRARY_SUFFIX})
+  endif()
 
-  ####
-  # OpenShadingLanguage
-  if(WITH_CYCLES_OSL)
-    find_package(OpenShadingLanguage REQUIRED)
+  find_package(JPEG REQUIRED)
+  find_package(OpenJPEG REQUIRED)
+  find_package(TIFF REQUIRED)
+  find_package(PNG REQUIRED)
+endif()
+
+###########################################################################
+# OpenEXR
+###########################################################################
+
+if(CYCLES_STANDALONE_REPOSITORY)
+  if(MSVC AND EXISTS ${_cycles_lib_dir})
+    set(OPENEXR_IEX_LIBRARY
+      optimized ${OPENEXR_ROOT_DIR}/lib/Iex_s.lib
+      debug ${OPENEXR_ROOT_DIR}/lib/Iex_s_d.lib
+    )
+    set(OPENEXR_HALF_LIBRARY
+      optimized ${OPENEXR_ROOT_DIR}/lib/Half_s.lib
+      debug ${OPENEXR_ROOT_DIR}/lib/Half_s_d.lib
+    )
+    set(OPENEXR_ILMIMF_LIBRARY
+      optimized ${OPENEXR_ROOT_DIR}/lib/IlmImf_s.lib
+      debug ${OPENEXR_ROOT_DIR}/lib/IlmImf_s_d.lib
+    )
+    set(OPENEXR_IMATH_LIBRARY
+      optimized ${OPENEXR_ROOT_DIR}/lib/Imath_s.lib
+      debug ${OPENEXR_ROOT_DIR}/lib/Imath_s_d.lib
+    )
+    set(OPENEXR_ILMTHREAD_LIBRARY
+      optimized ${OPENEXR_ROOT_DIR}/lib/IlmThread_s.lib
+      debug ${OPENEXR_ROOT_DIR}/lib/IlmThread_s_d.lib
+    )
+  endif()
+
+  find_package(OpenEXR REQUIRED)
+endif()
+
+###########################################################################
+# OpenShadingLanguage & LLVM
+###########################################################################
+
+if(WITH_CYCLES_OSL)
+  if(CYCLES_STANDALONE_REPOSITORY)
+    if(EXISTS ${_cycles_lib_dir})
+      set(LLVM_STATIC ON)
+    endif()
+
+    find_package(OSL REQUIRED)
     find_package(LLVM REQUIRED)
+
+    if(MSVC AND EXISTS ${_cycles_lib_dir})
+      # TODO(sergey): On Windows llvm-config doesn't give proper results for the
+      # library names, use hardcoded libraries for now.
+      file(GLOB _llvm_libs_release ${LLVM_ROOT_DIR}/lib/*.lib)
+      file(GLOB _llvm_libs_debug ${LLVM_ROOT_DIR}/debug/lib/*.lib)
+      set(_llvm_libs)
+      foreach(_llvm_lib_path ${_llvm_libs_release})
+        get_filename_component(_llvm_lib_name ${_llvm_lib_path} ABSOLUTE)
+        list(APPEND _llvm_libs optimized ${_llvm_lib_name})
+      endforeach()
+      foreach(_llvm_lib_path ${_llvm_libs_debug})
+        get_filename_component(_llvm_lib_name ${_llvm_lib_path} ABSOLUTE)
+        list(APPEND _llvm_libs debug ${_llvm_lib_name})
+      endforeach()
+      set(LLVM_LIBRARY ${_llvm_libs})
+      unset(_llvm_lib_name)
+      unset(_llvm_lib_path)
+      unset(_llvm_libs)
+      unset(_llvm_libs_debug)
+      unset(_llvm_libs_release)
+
+      set(OSL_LIBRARIES
+	optimized ${OSL_ROOT_DIR}/lib/oslcomp.lib
+	optimized ${OSL_ROOT_DIR}/lib/oslexec.lib
+	optimized ${OSL_ROOT_DIR}/lib/oslquery.lib
+	optimized ${OSL_ROOT_DIR}/lib/pugixml.lib
+	debug ${OSL_ROOT_DIR}/lib/oslcomp_d.lib
+	debug ${OSL_ROOT_DIR}/lib/oslexec_d.lib
+	debug ${OSL_ROOT_DIR}/lib/oslquery_d.lib
+	debug ${OSL_ROOT_DIR}/lib/pugixml_d.lib
+      )
+    endif()
   endif()
+endif()
+
+###########################################################################
+# OpenColorIO
+###########################################################################
 
-  ####
-  # OpenColorIO
-  if(WITH_OPENCOLORIO)
+if(WITH_CYCLES_OPENCOLORIO)
+  if(CYCLES_STANDALONE_REPOSITORY)
     find_package(OpenColorIO REQUIRED)
+    set(WITH_OPENCOLORIO ON)
+
+    if(MSVC AND EXISTS ${_cycles_lib_dir})
+      set(OPENCOLORIO_LIBPATH ${_cycles_lib_dir}/opencolorio/lib)
+      set(OPENCOLORIO_LIBRARIES
+        optimized ${OPENCOLORIO_LIBPATH}/OpenColorIO.lib
+        optimized ${OPENCOLORIO_LIBPATH}/tinyxml.lib
+        optimized ${OPENCOLORIO_LIBPATH}/libyaml-cpp.lib
+        debug ${OPENCOLORIO_LIBPATH}/OpencolorIO_d.lib
+        debug ${OPENCOLORIO_LIBPATH}/tinyxml_d.lib
+        debug ${OPENCOLORIO_LIBPATH}/libyaml-cpp_d.lib
+      )
+    endif()
+  endif()
+endif()
+
+###########################################################################
+# Boost
+###########################################################################
+
+if(CYCLES_STANDALONE_REPOSITORY)
+  if(EXISTS ${_cycles_lib_dir})
+    if(MSVC)
+      set(Boost_USE_STATIC_RUNTIME OFF)
+      set(Boost_USE_MULTITHREADED ON)
+      set(Boost_USE_STATIC_LIBS ON)
+    else()
+      set(BOOST_LIBRARYDIR ${_cycles_lib_dir}/boost/lib)
+      set(Boost_NO_BOOST_CMAKE ON)
+      set(Boost_NO_SYSTEM_PATHS ON)
+    endif()
   endif()
 
-  ####
-  # Boost
   set(__boost_packages filesystem regex system thread date_time)
   if(WITH_CYCLES_NETWORK)
     list(APPEND __boost_packages serialization)
   endif()
   if(WITH_CYCLES_OSL)
-    # TODO(sergey): This is because of the way how our precompiled
-    # libraries works, could be different for someone's else libs..
-    if(APPLE OR MSVC)
-      list(APPEND __boost_packages wave)
-    elseif(NOT (${OSL_LIBRARY_VERSION_MAJOR} EQUAL "1" AND ${OSL_LIBRARY_VERSION_MINOR} LESS "6"))
-      list(APPEND __boost_packages wave)
-    endif()
+    list(APPEND __boost_packages wave)
   endif()
   find_package(Boost 1.48 COMPONENTS ${__boost_packages} REQUIRED)
   if(NOT Boost_FOUND)
@@ -131,21 +306,233 @@ if(CYCLES_STANDALONE_REPOSITORY)
   set(BOOST_LIBRARIES ${Boost_LIBRARIES})
   set(BOOST_LIBPATH ${Boost_LIBRARY_DIRS})
   set(BOOST_DEFINITIONS "-DBOOST_ALL_NO_LIB")
+endif()
+
+###########################################################################
+# Embree
+###########################################################################
+
+if(WITH_CYCLES_EMBREE)
+  if(CYCLES_STANDALONE_REPOSITORY)
+    if(MSVC AND EXISTS ${_cycles_lib_dir})
+      set(EMBREE_TASKING_LIBRARY
+        optimized ${EMBREE_ROOT_DIR}/lib/tasking.lib
+        debug  ${EMBREE_ROOT_DIR}/lib/tasking_d.lib
+      )
+      set(EMBREE_EMBREE3_LIBRARY
+        optimized ${EMBREE_ROOT_DIR}/lib/embree3.lib
+        debug  ${EMBREE_ROOT_DIR}/lib/embree3_d.lib
+      )
+      set(EMBREE_EMBREE_AVX_LIBRARY
+        optimized ${EMBREE_ROOT_DIR}/lib/embree_avx.lib
+        debug  ${EMBREE_ROOT_DIR}/lib/embree_avx_d.lib
+      )
+      set(EMBREE_EMBREE_AVX2_LIBRARY
+        optimized ${EMBREE_ROOT_DIR}/lib/embree_avx2.lib
+        debug  ${EMBREE_ROOT_DIR}/lib/embree_avx2_d.lib
+      )
+      set(EMBREE_EMBREE_SSE42_LIBRARY
+        optimized ${EMBREE_ROOT_DIR}/lib/embree_sse42.lib
+        debug  ${EMBREE_ROOT_DIR}/lib/embree_sse42_d.lib
+      )
+      set(EMBREE_LEXERS_LIBRARY
+        optimized ${EMBREE_ROOT_DIR}/lib/lexers.lib
+        debug  ${EMBREE_ROOT_DIR}/lib/lexers_d.lib
+      )
+      set(EMBREE_MATH_LIBRARY
+        optimized ${EMBREE_ROOT_DIR}/lib/math.lib
+        debug  ${EMBREE_ROOT_DIR}/lib/math_d.lib
+      )
+      set(EMBREE_SIMD_LIBRARY
+        optimized ${EMBREE_ROOT_DIR}/lib/simd.lib
+        debug  ${EMBREE_ROOT_DIR}/lib/simd_d.lib
+      )
+      set(EMBREE_SYS_LIBRARY
+        optimized ${EMBREE_ROOT_DIR}/lib/sys.lib
+        debug  ${EMBREE_ROOT_DIR}/lib/sys_d.lib
+      )
+    endif()
 
-  ####
-  # Embree
-  if(WITH_CYCLES_EMBREE)
     find_package(Embree 3.8.0 REQUIRED)
   endif()
+endif()
+
+###########################################################################
+# Logging
+###########################################################################
 
-  ####
-  # Logging
-  if(WITH_CYCLES_LOGGING)
+if(WITH_CYCLES_LOGGING)
+  if(CYCLES_STANDALONE_REPOSITORY)
     find_package(Glog REQUIRED)
     find_package(Gflags REQUIRED)
   endif()
+endif()
+
+###########################################################################
+# OpenSubdiv
+###########################################################################
+
+if(WITH_CYCLES_OPENSUBDIV)
+  if(CYCLES_STANDALONE_REPOSITORY)
+    find_package(OpenSubdiv REQUIRED)
+    set(WITH_OPENSUBDIV ON)
+
+    if(MSVC AND EXISTS ${_cycles_lib_dir})
+      set(OPENSUBDIV_LIBRARIES
+        optimized ${OPENSUBDIV_ROOT_DIR}/lib/osdCPU.lib
+        optimized ${OPENSUBDIV_ROOT_DIR}/lib/osdGPU.lib
+        debug ${OPENSUBDIV_ROOT_DIR}/lib/osdCPU_d.lib
+        debug ${OPENSUBDIV_ROOT_DIR}/lib/osdGPU_d.lib
+     )
+    endif()
+  endif()
+endif()
+
+###########################################################################
+# OpenVDB
+###########################################################################
+
+if(WITH_CYCLES_OPENVDB)
+  if(CYCLES_STANDALONE_REPOSITORY)
+    if(MSVC AND EXISTS ${_cycles_lib_dir})
+      set(BLOSC_LIBRARY
+          optimized ${BLOSC_ROOT_DIR}/lib/libblosc.lib
+          debug ${BLOSC_ROOT_DIR}/lib/libblosc_d.lib)
+    endif()
+
+    find_package(OpenVDB REQUIRED)
+    find_package(Blosc REQUIRED)
+    set(WITH_OPENVDB ON)
+    set(OPENVDB_DEFINITIONS -DNOMINMAX -D_USE_MATH_DEFINES)
+  endif()
+endif()
+
+###########################################################################
+# OpenImageDenoise
+###########################################################################
+
+if(WITH_CYCLES_OPENIMAGEDENOISE)
+  if(CYCLES_STANDALONE_REPOSITORY)
+    find_package(OpenImageDenoise REQUIRED)
+    set(WITH_OPENIMAGEDENOISE ON)
+
+    if(MSVC AND EXISTS ${_cycles_lib_dir})
+      set(OPENIMAGEDENOISE_LIBRARIES
+        optimized ${OPENIMAGEDENOISE_ROOT_DIR}/lib/OpenImageDenoise.lib
+        optimized ${OPENIMAGEDENOISE_ROOT_DIR}/lib/common.lib
+        optimized ${OPENIMAGEDENOISE_ROOT_DIR}/lib/dnnl.lib
+        debug ${OPENIMAGEDENOISE_ROOT_DIR}/lib/OpenImageDenoise_d.lib
+        debug ${OPENIMAGEDENOISE_ROOT_DIR}/lib/common_d.lib
+        debug ${OPENIMAGEDENOISE_ROOT_DIR}/lib/dnnl_d.lib)
+    endif()
+
+  endif()
+endif()
+
+###########################################################################
+# TBB
+###########################################################################
+
+if(CYCLES_STANDALONE_REPOSITORY)
+  if(MSVC AND EXISTS ${_cycles_lib_dir})
+    set(TBB_LIBRARY
+      optimized ${TBB_ROOT_DIR}/lib/tbb.lib
+      debug ${TBB_ROOT_DIR}/lib/debug/tbb_debug.lib
+    )
+  endif()
+
+  find_package(TBB REQUIRED)
+endif()
+
+###########################################################################
+# GLEW
+###########################################################################
+
+if(CYCLES_STANDALONE_REPOSITORY)
+  if(MSVC AND EXISTS ${_cycles_lib_dir})
+    set(GLEW_LIBRARY "${_cycles_lib_dir}/opengl/lib/glew.lib")
+    set(GLEW_INCLUDE_DIR "${_cycles_lib_dir}/opengl/include")
+    add_definitions(-DGLEW_STATIC)
+  endif()
+
+  find_package(GLEW REQUIRED)
+else()
+  # Workaround for unconventional variable name use in Blender.
+  set(GLEW_INCLUDE_DIR "${GLEW_INCLUDE_PATH}")
+endif()
+
+###########################################################################
+# System Libraries
+###########################################################################
+
+# Detect system libraries again
+if(EXISTS ${_cycles_lib_dir})
+  unset(CMAKE_IGNORE_PATH)
+endif()
+
+###########################################################################
+# OpenGL
+###########################################################################
+
+if(CYCLES_STANDALONE_REPOSITORY)
+  if(NOT DEFINED OpenGL_GL_PREFERENCE)
+    set(OpenGL_GL_PREFERENCE "LEGACY")
+  endif()
+
+  find_package(OpenGL REQUIRED)
 
-  unset(_lib_DIR)
+  set(CYCLES_GL_LIBRARIES
+    ${OPENGL_gl_LIBRARY}
+    ${OPENGL_glu_LIBRARY}
+    ${GLEW_LIBRARY}
+  )
 else()
-  set(LLVM_LIBRARIES ${LLVM_LIBRARY})
+  set(CYCLES_GL_LIBRARIES
+    bf_intern_glew_mx
+    ${BLENDER_GL_LIBRARIES}
+    ${BLENDER_GLEW_LIBRARIES})
+endif()
+
+###########################################################################
+# GLUT
+###########################################################################
+
+if(WITH_CYCLES_STANDALONE AND WITH_CYCLES_STANDALONE_GUI)
+  if(MSVC AND EXISTS ${_cycles_lib_dir})
+    add_definitions(-DFREEGLUT_STATIC -DFREEGLUT_LIB_PRAGMAS=0)
+    set(GLUT_LIBRARIES "${_cycles_lib_dir}/opengl/lib/freeglut_static.lib")
+    set(GLUT_INCLUDE_DIR "${_cycles_lib_dir}/opengl/include")
+  else()
+    find_package(GLUT)
+
+    if(NOT GLUT_FOUND)
+      set(WITH_CYCLES_STANDALONE_GUI OFF)
+      message(STATUS "GLUT not found, disabling Cycles standalone GUI")
+    endif()
+  endif()
+
+  include_directories(
+    SYSTEM
+    ${GLUT_INCLUDE_DIR}
+  )
+endif()
+
+###########################################################################
+# CUDA
+###########################################################################
+
+if(WITH_CYCLES_CUDA_BINARIES OR NOT WITH_CUDA_DYNLOAD)
+  find_package(CUDA) # Try to auto locate CUDA toolkit
+  if(CUDA_FOUND)
+    message(STATUS "CUDA nvcc = ${CUDA_NVCC_EXECUTABLE}")
+  else()
+    message(STATUS "CUDA compiler not found, disabling WITH_CYCLES_CUDA_BINARIES")
+    set(WITH_CYCLES_CUDA_BINARIES OFF)
+    if(NOT WITH_CUDA_DYNLOAD)
+      message(STATUS "Additionally falling back to dynamic CUDA load")
+      set(WITH_CUDA_DYNLOAD ON)
+    endif()
+  endif()
 endif()
+
+unset(_cycles_lib_dir)