Only activate legacy program feature for the solana-sdk crate

ci/test-stable.sh

@@ -41,7 +41,7 @@ test-stable)
   ;;
 test-stable-perf)
   # BPF solana-sdk legacy compile test
-  ./cargo-build-bpf --manifest-path sdk/Cargo.toml --no-default-features --features program
+  ./cargo-build-bpf --manifest-path sdk/Cargo.toml
 
   # BPF program tests
   _ make -C programs/bpf/c tests

sdk/cargo-build-bpf/src/main.rs

@@ -114,7 +114,7 @@ fn build_bpf(config: Config) {
         }
     };
 
-    let legacy_program_feature_present = root_package.features.contains_key("program");
+    let legacy_program_feature_present = root_package.name == "solana-sdk";
     let root_package_dir = &root_package.manifest_path.parent().unwrap_or_else(|| {
         eprintln!(
             "Unable to get directory of {}",