Allow platform with machine/endian.h to select the GNUiconv transcoder

git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@800818 13f79535-47bb-0310-9956-ffa450edef68

m4/xerces_transcoder_selection.m4

@@ -23,7 +23,9 @@ AC_DEFUN([XERCES_TRANSCODER_SELECTION],
 
 	# Check for GNU iconv support
 	no_GNUiconv=false
-	AC_CHECK_HEADERS([iconv.h wchar.h string.h stdlib.h stdio.h ctype.h locale.h errno.h endian.h], [], [no_GNUiconv=true])
+	AC_CHECK_HEADERS([iconv.h wchar.h string.h stdlib.h stdio.h ctype.h locale.h errno.h], [], [no_GNUiconv=true])
+    # The code in iconv loads either endian.h or machine/endian.h, so verify that at least one is present
+	AC_CHECK_HEADER([endian.h], [], [AC_CHECK_HEADER([machine/endian.h],[],[no_GNUiconv=true])])
 	AC_CHECK_FUNCS([iconv_open iconv_close iconv], [], [no_GNUiconv=true])
 	AC_MSG_CHECKING([whether we can support the GNU iconv Transcoder])
 	list_add=