Index: expat/expat_config.h
===================================================================
--- expat.orig/expat_config.h
+++ expat/expat_config.h
@@ -5,10 +5,14 @@
 #define BYTEORDER 1234
 
 /* Define to 1 if you have the `arc4random' function. */
-/* #undef HAVE_ARC4RANDOM */
+#if defined(__APPLE__) || defined(__BIONIC__)
+#define HAVE_ARC4RANDOM 1
+#endif
 
 /* Define to 1 if you have the `arc4random_buf' function. */
-/* #undef HAVE_ARC4RANDOM_BUF */
+#if defined(__APPLE__) || defined(__BIONIC__)
+#define HAVE_ARC4RANDOM_BUF 1
+#endif
 
 /* Define to 1 if you have the `bcopy' function. */
 #define HAVE_BCOPY 1
@@ -23,7 +27,9 @@
 #define HAVE_GETPAGESIZE 1
 
 /* Define to 1 if you have the `getrandom' function. */
+#if defined(__BIONIC__)
 #define HAVE_GETRANDOM 1
+#endif
 
 /* Define to 1 if you have the <inttypes.h> header file. */
 #define HAVE_INTTYPES_H 1
@@ -53,7 +59,9 @@
 #define HAVE_STRING_H 1
 
 /* Define to 1 if you have `syscall' and `SYS_getrandom'. */
-/* #undef HAVE_SYSCALL_GETRANDOM */
+#if defined(__BIONIC__)
+#define HAVE_SYSCALL_GETRANDOM 1
+#endif
 
 /* Define to 1 if you have the <sys/param.h> header file. */
 #define HAVE_SYS_PARAM_H 1
@@ -105,7 +113,9 @@
 #define XML_CONTEXT_BYTES 1024
 
 /* Define to include code reading entropy from `/dev/urandom'. */
+#if defined(__GLIBC__)
 #define XML_DEV_URANDOM 1
+#endif
 
 /* Define to make parameter entity parsing functionality available. */
 #define XML_DTD 1