diff -ur lua-5.2.4.orig/src/liolib.c lua-5.2.4/src/liolib.c --- lua-5.2.4.orig/src/liolib.c 2013-04-12 20:48:47.000000000 +0200 +++ lua-5.2.4/src/liolib.c 2014-03-19 15:03:49.727286832 +0100 @@ -19,6 +19,9 @@ #include #include #include +#if defined(HAVE_UNISTD_H) +#include +#endif #define liolib_c #define LUA_LIB