Add in syscall stubs to fix non-bpf builds (#71)

memo/Cargo.lock

@@ -240,6 +240,10 @@ dependencies = [
  "thiserror 1.0.20 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "solana-sdk-bpf-test"
+version = "1.2.3"
+
 [[package]]
 name = "solana-sdk-macro"
 version = "1.2.4"
@@ -256,6 +260,7 @@ name = "spl-memo"
 version = "1.0.0"
 dependencies = [
  "solana-sdk 1.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "solana-sdk-bpf-test 1.2.3",
 ]
 
 [[package]]

memo/Cargo.toml

@@ -12,6 +12,7 @@ edition = "2018"
 
 [dependencies]
 solana-sdk = { version = "1.2.4", default-features = false, features=["program"] }
+solana-sdk-bpf-test = { path = "../bin/bpf-sdk/rust/test", default-features = false }
 
 [lib]
 name = "spl_memo"

memo/src/processor.rs

@@ -16,6 +16,10 @@ fn process_instruction<'a>(
     Ok(())
 }
 
+// Pulls in the stubs required for `info!()`
+#[cfg(not(target_arch = "bpf"))]
+solana_sdk_bpf_test::stubs!();
+
 #[cfg(test)]
 mod tests {
     use super::*;