--- CMake/OTBSetStandardCompilerFlags.cmake.orig
+++ CMake/OTBSetStandardCompilerFlags.cmake
@@ -142,7 +142,6 @@
     -Wpointer-arith
     -Wunused
     -Wwrite-strings
-    -funit-at-a-time
     -Wno-strict-overflow
   )