# xlocale.h is gone with glibc 2.26 and should never had been included.
# https://ssl.icu-project.org/trac/ticket/13329
diff -ur icu.org/source/i18n/digitlst.cpp icu/source/i18n/digitlst.cpp
--- icu.org/source/i18n/digitlst.cpp	2016-10-17 10:40:38.000000000 +0530
+++ icu/source/i18n/digitlst.cpp	2017-12-16 10:26:56.477053596 +0530
@@ -63,6 +63,8 @@
 #if U_USE_STRTOD_L && !U_PLATFORM_USES_ONLY_WIN32_API
 # if U_PLATFORM == U_PF_CYGWIN
 #   include <locale.h>
+# elif U_PLATFORM_IS_LINUX_BASED
+#   include <ctype.h>    // should be for all POSIX.2008 compliant platforms, but..
 # else
 #   include <xlocale.h>
 # endif