--- /dev/null
+--- ./texk/web2c/luatexdir/luaffi/ffi.h 2017-11-17 14:32:47.517562104 +0000
++++ ../ffi.h 2017-11-17 14:32:26.333562953 +0000
+@@ -42,7 +42,7 @@
+ #include <sys/mman.h>
+ #endif
+
+-#if ( defined( _WIN32) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__bsdi__) || defined(__DragonFly__))
++#if ( defined( _WIN32) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__bsdi__) || defined(__DragonFly__) || defined(__ANDROID__))
+ /* We should include something equivalent to */
+ /* complex.h */
+ #else