diff --git a/Cargo.toml b/Cargo.toml
index 1fa4d60..9f86e81 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -74,14 +74,14 @@ hmac = { version = "0.12.1", optional = true }
 ed25519-bip32 = { version = "0.4.1", optional = true }
 ledger-transport-hid = { version = "0.9", optional = true }
 
-allo-isolate = { version = "0.1" }
-once_cell = { version = "1.8.0" }
-android_logger = { version = "0.10.0" }
+allo-isolate = { version = "0.1", optional = true }
+once_cell = { version = "1.8.0", optional = true }
+android_logger = { version = "0.10.0", optional = true }
 
 [features]
 ledger = ["ledger-apdu", "hmac", "ed25519-bip32", "ledger-transport-hid"]
 ledger_sapling = ["ledger"]
-# dart_ffi = ["allo-isolate", "once_cell", "android_logger"]
+dart_ffi = ["allo-isolate", "once_cell", "android_logger"]
 
 # librustzcash synced to 35023ed8ca2fb1061e78fd740b640d4eefcc5edd
 
diff --git a/binding.h b/binding.h
index f7d9473..b7152e2 100644
--- a/binding.h
+++ b/binding.h
@@ -1,7 +1,17 @@
-#include <stdarg.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdlib.h>
+#ifndef __APPLE__
+typedef char int8_t;
+typedef unsigned char uint8_t;
+typedef short int uint16_t;
+typedef long long int int64_t;
+typedef long long int uint64_t;
+typedef long long int uintptr_t;
+typedef long int int32_t;
+typedef long int uint32_t;
+typedef char bool;
+#endif
+typedef void *DartPostCObjectFnType;
+
+void dummy_export(void);
 
 void dart_post_cobject(DartPostCObjectFnType ptr);
 
diff --git a/binding2.h b/binding2.h
new file mode 100644
index 0000000..51d8733
--- /dev/null
+++ b/binding2.h
@@ -0,0 +1,12 @@
+#ifndef __APPLE__
+typedef char int8_t;
+typedef unsigned char uint8_t;
+typedef short int uint16_t;
+typedef long long int int64_t;
+typedef long long int uint64_t;
+typedef long long int uintptr_t;
+typedef long int int32_t;
+typedef long int uint32_t;
+typedef char bool;
+#endif
+typedef void *DartPostCObjectFnType;
diff --git a/build.rs b/build.rs
index b7e2ca8..32bab8c 100644
--- a/build.rs
+++ b/build.rs
@@ -7,7 +7,7 @@ fn main() {
         )
         .unwrap();
 
-    create_c_bindings();
+    // create_c_bindings();
 }
 
 #[allow(dead_code)]
diff --git a/src/api/dart_ffi.rs b/src/api/dart_ffi.rs
index 67709f8..c5cb49f 100644
--- a/src/api/dart_ffi.rs
+++ b/src/api/dart_ffi.rs
@@ -13,6 +13,9 @@ use zcash_primitives::transaction::builder::Progress;
 
 static mut POST_COBJ: Option<ffi::DartPostCObjectFnType> = None;
 
+#[no_mangle]
+pub unsafe extern "C" fn dummy_export() {}
+
 #[no_mangle]
 pub unsafe extern "C" fn dart_post_cobject(ptr: ffi::DartPostCObjectFnType) {
     POST_COBJ = Some(ptr);