diff --git a/CMakeLists.txt b/CMakeLists.txt
index ea7ab49..1e64114 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -69,3 +69,11 @@ endif(EXISTS "${CMAKE_SOURCE_DIR}/source/lib/tiny_jpeg")
 add_subdirectory( "source/app/common/cJSON" )
 add_subdirectory( "source/app/common/argument_parser" )
 add_subdirectory( "source/app/gpr_tools" )
+
+# Check processor endianness
+INCLUDE(TestBigEndian)
+TEST_BIG_ENDIAN(IS_BIG_ENDIAN)
+IF(NOT IS_BIG_ENDIAN)
+    TARGET_COMPILE_DEFINITIONS( dng_sdk PUBLIC -DqDNGLittleEndian=1)
+    TARGET_COMPILE_DEFINITIONS( gpr_sdk PUBLIC -DqDNGLittleEndian=1)
+ENDIF(NOT IS_BIG_ENDIAN)
\ No newline at end of file