miniz_oxide.diff

diff --git a/miniz_oxide/src/lib.rs b/miniz_oxide/src/lib.rs
index 82fcd60..bde269f 100644
--- a/miniz_oxide/src/lib.rs
+++ b/miniz_oxide/src/lib.rs
@@ -22,7 +22,16 @@
 //! ```
 
 extern crate adler32;
+#[cfg(not(all(target_arch = "wasm32", not(target_os = "emscripten"))))]
 extern crate libc;
+#[cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))]
+mod libc {
+    #![allow(non_camel_case_types)]
+    pub type c_void = u8;
+    pub type c_int = i32;
+    pub type c_uint = u32;
+    pub type c_ulong = u64;
+}
 
 pub mod inflate;
 pub mod deflate;
diff --git a/src/lib.rs b/src/lib.rs
index 6a71bcf..17ba6c8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,28 @@
 extern crate crc;
+#[cfg(not(all(target_arch = "wasm32", not(target_os = "emscripten"))))]
 extern crate libc;
+#[cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))]
+mod libc {
+    #![allow(non_camel_case_types)]
+    pub type c_void = u8;
+    pub type c_int = i32;
+    pub type c_uint = u32;
+    pub type c_ulong = u64;
+    pub type c_char = i8;
+    pub type size_t = usize;
+
+    pub fn malloc(_: size_t) -> *mut c_void {
+        panic!()
+    }
+
+    pub fn realloc(_: *mut c_void, _: size_t) -> *mut c_void {
+        panic!()
+    }
+
+    pub fn free(_: *mut c_void) {
+        panic!()
+    }
+}
 extern crate miniz_oxide;
 
 use std::{cmp, ptr, slice};