Ensure build scripts and dev features account for getrandom config

Author: Bluefinger

.github/workflows/ci.yml

@@ -222,6 +222,8 @@ jobs:
         with:
           target: wasm32-unknown-unknown
       - name: Check wasm
+        env:
+          RUSTFLAGS: --cfg getrandom_backend="wasm_js"
         run: cargo check --target wasm32-unknown-unknown
 
   build-wasm-atomics:
@@ -247,7 +249,7 @@ jobs:
       - name: Check wasm
         run: cargo check --target wasm32-unknown-unknown -Z build-std=std,panic_abort
         env:
-          RUSTFLAGS: "-C target-feature=+atomics,+bulk-memory -D warnings"
+          RUSTFLAGS: '-C target-feature=+atomics,+bulk-memory -D warnings --cfg getrandom_backend="wasm_js"'
 
   markdownlint:
     runs-on: ubuntu-latest

.github/workflows/validation-jobs.yml

@@ -112,6 +112,8 @@ jobs:
           cd ../..
 
       - name: First Wasm build
+        env:
+          RUSTFLAGS: --cfg getrandom_backend="wasm_js"
         run: |
           cargo build --release --example testbed_ui --target wasm32-unknown-unknown
 

Cargo.toml

@@ -582,6 +582,7 @@ smol-hyper = "0.1"
 ureq = { version = "3.0.8", features = ["json"] }
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
+getrandom = { version = "0.3", features = ["wasm_js"] }
 wasm-bindgen = { version = "0.2" }
 web-sys = { version = "0.3", features = ["Window"] }
 

tools/build-wasm-example/src/main.rs

@@ -77,7 +77,9 @@ fn main() {
             sh,
             "cargo build {parameters...} --profile release --target wasm32-unknown-unknown --example {example}"
         );
-        cmd.run().expect("Error building example");
+        cmd.env("RUSTFLAGS", "--cfg getrandom_backend=\"wasm_js\"")
+            .run()
+            .expect("Error building example");
 
         cmd!(
             sh,