Add features

message-broker/Cargo.toml

@@ -15,3 +15,13 @@ codec = { package = "parity-scale-codec", version = "1.3.0", features = [ "deriv
 
 # Cumulus dependencies
 cumulus-primitives = { path = "../primitives" }
+
+[features]
+default = [ "std" ]
+std = [
+	"frame-support/std",
+	"frame-system/std",
+	"sp-inherents/std",
+	"codec/std",
+	"cumulus-primitives/std",
+]

message-broker/src/lib.rs

@@ -18,6 +18,8 @@
 //!
 //! This pallet provides support for handling downward and upward messages.
 
+#![cfg_attr(not(feature = "std"), no_std)]
+
 use cumulus_primitives::{
 	inherents::{DownwardMessagesType, DOWNWARD_MESSAGES_IDENTIFIER},
 	well_known_keys, DownwardMessageHandler, UpwardMessageSender,

primitives/Cargo.toml

@@ -10,3 +10,9 @@ sp-inherents = { git = "https://github.com/paritytech/substrate", branch = "cumu
 
 # Other dependencies
 impl-trait-for-tuples = "0.1.3"
+
+[features]
+default = [ "std" ]
+std = [
+	"sp-inherents/std",
+]

primitives/src/lib.rs

@@ -16,6 +16,8 @@
 
 //! Cumulus related primitive types and traits.
 
+#![cfg_attr(not(feature = "std"), no_std)]
+
 /// Inherents identifiers and types related to
 pub mod inherents {
 	use sp_inherents::InherentIdentifier;

runtime/src/lib.rs

@@ -14,11 +14,12 @@
 // You should have received a copy of the GNU General Public License
 // along with Cumulus.  If not, see <http://www.gnu.org/licenses/>.
 
+///! The Cumulus runtime to make a runtime a parachain.
+
 #![cfg_attr(not(feature = "std"), no_std)]
 
 use codec::{Decode, Encode};
 use sp_runtime::traits::Block as BlockT;
-///! The Cumulus runtime to make a runtime a parachain.
 use sp_std::vec::Vec;
 
 #[cfg(not(feature = "std"))]