fixup: do not unconditionally disable "diff -u"

diff --git a/Makefile b/Makefile
index 668dbc96ca3ccefb5117155012275cc5b2fe28da..c8cc9e280adf309a1f14271adebd3f5c364d4b0f 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1374,6 +1374,10 @@ ifdef USE_NED_ALLOCATOR
        COMPAT_OBJS += compat/nedmalloc/nedmalloc.o
 endif
 
+ifdef GIT_TEST_CMP_USE_COPIED_CONTEXT
+       export GIT_TEST_CMP_USE_COPIED_CONTEXT
+endif
+
 ifeq ($(TCLTK_PATH),)
 NO_TCLTK=NoThanks
 endif