diff -uNr sysroot.orig/usr/include/syslog.h sysroot/usr/include/syslog.h
--- sysroot.orig/usr/include/syslog.h	2019-02-12 16:12:24.000000000 +0000
+++ sysroot/usr/include/syslog.h	2019-03-20 13:19:44.315965728 +0000
@@ -158,4 +158,22 @@
  */
 void vsyslog(int __priority, const char* __fmt, va_list __args) __printflike(2, 0);
 
+static __inline__ void android_polyfill_syslog_r(int syslog_priority, void* d, const char* format, ...)
+{
+  (void) d;
+  va_list myargs;
+  va_start(myargs, format);
+  vsyslog(syslog_priority, format, myargs);
+  va_end(myargs);
+}
+
+static __inline__ void android_polyfill_vsyslog_r(int syslog_priority, void* d, const char* fmt, va_list ap)
+{
+  (void) d;
+  vsyslog(syslog_priority, fmt, ap);
+}
+
+#define syslog_r android_polyfill_syslog_r
+#define vsyslog_r android_polyfill_vsyslog_r
+
 __END_DECLS