diff -up mozilla-aurora/build/autoconf/icu.m4.icu-endian mozilla-aurora/build/autoconf/icu.m4

--- mozilla-aurora/build/autoconf/icu.m4.icu-endian	2016-12-09 09:11:01.227317790 +0100

+++ mozilla-aurora/build/autoconf/icu.m4	2016-12-09 09:18:40.608712247 +0100

@@ -78,7 +78,7 @@ if test -n "$USE_ICU"; then

     # TODO: the l is actually endian-dependent

     # We could make this set as 'l' or 'b' for little or big, respectively,

     # but we'd need to check in a big-endian version of the file.

-    ICU_DATA_FILE="icudt${version}l.dat"

+    ICU_DATA_FILE="icudt${version}b.dat"

     dnl We won't build ICU data as a separate file when building

     dnl JS standalone so that embedders don't have to deal with it.