diff -x .git -ur usd.orig/cmake/defaults/Packages.cmake external_usd/cmake/defaults/Packages.cmake
--- usd.orig/cmake/defaults/Packages.cmake	2019-10-24 22:39:53.000000000 +0200
+++ external_usd/cmake/defaults/Packages.cmake	2019-11-28 13:00:33.185957483 +0100
@@ -64,7 +64,7 @@
 endif()
 
 # --TBB
-find_package(TBB REQUIRED COMPONENTS tbb)
+find_package(TBB)
 add_definitions(${TBB_DEFINITIONS})
 
 # --math
diff -Naur external_usd_base/cmake/macros/Public.cmake external_usd/cmake/macros/Public.cmake
--- external_usd_base/cmake/macros/Public.cmake	2019-10-24 14:39:53 -0600
+++ external_usd/cmake/macros/Public.cmake	2020-01-11 13:33:29 -0700
@@ -996,6 +996,12 @@
     foreach(lib ${PXR_OBJECT_LIBS})
         string(TOUPPER ${lib} uppercaseName)
         list(APPEND exports "${uppercaseName}_EXPORTS=1")
+        # When building for blender, we do NOT want to export all symbols on windows.
+        # This is a dirty hack, but USD makes it impossible to do the right thing
+        # with the default options exposed.
+        if (WIN32)
+            list(APPEND exports "PXR_STATIC=1")
+        endif()
     endforeach()
     foreach(lib ${PXR_OBJECT_LIBS})
         set(objects "${objects};\$<TARGET_OBJECTS:${lib}>")
diff -ru USD-20.11/pxr/base/tf/pxrLZ4/lz4.cpp external_usd/pxr/base/tf/pxrLZ4/lz4.cpp
--- USD-20.11/pxr/base/tf/pxrLZ4/lz4.cpp        2020-10-14 19:25:19.000000000 +0100
+++ external_usd/pxr/base/tf/pxrLZ4/lz4.cpp     2021-02-09 09:28:51.496190085 +0000
@@ -614,6 +614,15 @@
 /*-************************************
 *  Internal Definitions used in Tests
 **************************************/
+
+/*******************************************************************
+ * Disabled in Blender. The BLOSC library also exposes these
+ * functions, and this causes 'duplicate symbol' linker errors.
+ *
+ * This problem has been reported upstream at
+ * https://github.com/PixarAnimationStudios/USD/issues/1447
+ *
+ *******************************************************************
 #if defined (__cplusplus)
 extern "C" {
 #endif
@@ -627,6 +636,7 @@
 #if defined (__cplusplus)
 }
 #endif
+********************************************************************/
 
 /*-******************************
 *  Compression functions