align metadata hash feature enablement with parachain

Cargo.toml

@@ -23,7 +23,7 @@ parity-scale-codec = { version = "3.6.5", default-features = false, features = [
 scale-info = { version = "2.11.0", default-features = false, features = ["derive", "serde"] }
 serde = { version = "1.0.197", default-features = false, features = ["alloc", "derive"] }
 serde_derive = { version = "1.0.117" }
-serde_json = { version = "1.0.114", default-features = false, features = ["alloc"] }
+serde_json = { version = "1.0.121", default-features = false, features = ["alloc"] }
 tokio = { version = "1.37", features = ["rt-multi-thread", "macros", "time"] }
 
 # encointer deps

runtime/Cargo.toml

@@ -76,7 +76,7 @@ frame-system-benchmarking = { workspace = true, optional = true }
 hex-literal = { workspace = true, optional = true }
 
 [build-dependencies]
-substrate-wasm-builder = { workspace = true, optional = true, default-features = true, features = ["metadata-hash"] }
+substrate-wasm-builder = { workspace = true, optional = true }
 
 [features]
 default = ["std"]
@@ -197,3 +197,11 @@ try-runtime = [
     "pallet-utility/try-runtime",
     "sp-runtime/try-runtime",
 ]
+
+# Enable metadata hash generation at compile time for the `CheckMetadataHash` extension.
+metadata-hash = ["substrate-wasm-builder?/metadata-hash"]
+
+# A feature that should be enabled when the runtime should be built for on-chain
+# deployment. This will disable stuff that shouldn't be part of the on-chain wasm
+# to make it smaller, like logging for example.
+on-chain-release-build = ["metadata-hash", "sp-api/disable-logging"]

runtime/build.rs

@@ -1,4 +1,9 @@
-#[cfg(feature = "std")]
+#[cfg(all(feature = "std", not(feature = "metadata-hash")))]
+fn main() {
+	substrate_wasm_builder::WasmBuilder::build_using_defaults()
+}
+
+#[cfg(all(feature = "std", feature = "metadata-hash"))]
 fn main() {
 	substrate_wasm_builder::WasmBuilder::init_with_defaults()
 		.enable_metadata_hash("ERT", 12)