get program names from programs (#4273)

* get program names from programs

* fixup

programs/exchange_program/Cargo.toml

@@ -16,6 +16,4 @@ solana-sdk = { path = "../../sdk", version = "0.15.0"  }
 
 [lib]
 name = "solana_exchange_program"
-crate-type = ["cdylib"]
-
-
+crate-type = ["lib","cdylib"]

programs/exchange_program/src/lib.rs

@@ -1,3 +1,12 @@
+#[macro_export]
+macro_rules! solana_exchange_program {
+    () => {
+        (
+            "solana_exchange_program".to_string(),
+            solana_exchange_api::id(),
+        )
+    };
+}
 use solana_exchange_api::exchange_processor::process_instruction;
 
 solana_sdk::solana_entrypoint!(process_instruction);