diff -ub /home/eddy/.sys/tmp/sha/brg_endian.h /home/eddy/work/Qt-5.12/qtbase/src/3rdparty/sha3/brg_endian.h
--- upstream/sha/brg_endian.h	2018-10-22 16:27:04.106128670 +0200
+++ qtbase/src/3rdparty/sha3/brg_endian.h	2018-10-22 16:30:35.098891562 +0200
@@ -16,6 +16,7 @@
 and fitness for purpose.
 ---------------------------------------------------------------------------
 Issue Date: 20/12/2007
+Changes for ARM 9/9/2010 [Downstream relative to Gladman's GitHub, upstream to Qt]
 */
 
 #ifndef _BRG_ENDIAN_H
@@ -119,12 +120,18 @@
       defined( THINK_C ) || defined( __VMCMS__ ) || defined( _AIX )
 #  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
 
-#elif 0     /* **** EDIT HERE IF NECESSARY **** */
+#elif defined(__arm__)
+# ifdef __BIG_ENDIAN
+#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
+# else
+#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
+# endif
+#elif 1     /* **** EDIT HERE IF NECESSARY **** */
 #  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
 #elif 0     /* **** EDIT HERE IF NECESSARY **** */
 #  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
 #else
-#  error Please edit lines 126 or 128 in brg_endian.h to set the platform byte order
+#  error Please edit lines 129 or 131 in brg_endian.h to set the platform byte order
 #endif
 
 #endif

Diff finished.  Mon Oct 22 16:31:46 2018