diff -r 632dfc73cf83 -r a1613788130d rust/physfs-rs/src/primitives.rs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rust/physfs-rs/src/primitives.rs	Thu Dec 13 23:44:46 2018 +0100
@@ -0,0 +1,19 @@
+#![allow(non_camel_case_types)]
+
+pub type PHYSFS_uint8  = ::libc::c_uchar;
+pub type PHYSFS_sint8  = ::libc::c_char;
+pub type PHYSFS_uint16 = ::libc::c_ushort;
+pub type PHYSFS_sint16 = ::libc::c_short;
+pub type PHYSFS_uint32 = ::libc::c_uint;
+pub type PHYSFS_sint32 = ::libc::c_int;
+
+#[cfg(target_pointer_width = "64")]
+pub type PHYSFS_uint64 = ::libc::c_ulonglong;
+#[cfg(target_pointer_width = "64")]
+pub type PHYSFS_sint64 = ::libc::c_longlong;
+
+// PhysFS defines the 64-bit types to 32 bits on 32-bit systems.
+#[cfg(target_pointer_width = "32")]
+pub type PHYSFS_uint64 = ::libc::c_uint;
+#[cfg(target_pointer_width = "32")]
+pub type PHYSFS_sint64 = ::libc::c_int;