--- assimp-3.3.1/CMakeLists.txt.bigend	2017-04-29 12:09:43.715099402 +0200
+++ assimp-3.3.1/CMakeLists.txt	2017-04-29 12:11:47.897726270 +0200
@@ -250,6 +250,12 @@
 
 MARK_AS_ADVANCED ( ASSIMP_BUILD_ARCHITECTURE ASSIMP_BUILD_COMPILER )
 
+INCLUDE(TestBigEndian)
+
+TEST_BIG_ENDIAN(BIGENDIAN)
+IF(${BIGENDIAN})
+     ADD_DEFINITIONS(-DAI_BUILD_BIG_ENDIAN)
+ENDIF(${BIGENDIAN})
 
 SET ( ASSIMP_BUILD_NONFREE_C4D_IMPORTER OFF CACHE BOOL
   "Build the C4D importer, which relies on the non-free Melange SDK."