Add crate version identifiers.

lib/environ/src/lib.rs

@@ -69,3 +69,6 @@ pub const WASM_PAGE_SIZE: u32 = 0x10000;
 
 /// The number of pages we can have before we run out of byte index space.
 pub const WASM_MAX_PAGES: u32 = 0x10000;
+
+/// Version number of this crate.
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");

lib/jit/src/lib.rs

@@ -61,3 +61,6 @@ pub use crate::target_tunables::target_tunables;
 // Re-export `Instance` so that users won't need to separately depend on
 // wasmtime-runtime in common cases.
 pub use wasmtime_runtime::{Instance, InstantiationError};
+
+/// Version number of this crate.
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");

lib/obj/src/lib.rs

@@ -29,3 +29,6 @@
 mod emit_module;
 
 pub use crate::emit_module::emit_module;
+
+/// Version number of this crate.
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");

lib/runtime/src/lib.rs

@@ -69,3 +69,6 @@ pub use crate::vmcontext::{
     VMContext, VMFunctionBody, VMFunctionImport, VMGlobalDefinition, VMGlobalImport,
     VMMemoryDefinition, VMMemoryImport, VMSharedSignatureIndex, VMTableDefinition, VMTableImport,
 };
+
+/// Version number of this crate.
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");

lib/wast/src/lib.rs

@@ -30,3 +30,6 @@ mod wast;
 
 pub use crate::spectest::instantiate_spectest;
 pub use crate::wast::{WastContext, WastError};
+
+/// Version number of this crate.
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");