From 022eb01a518be3e35032e1b4dadbd255e2680b7d Mon Sep 17 00:00:00 2001
From: Tony Arcieri <bascule@gmail.com>
Date: Tue, 2 Apr 2024 12:45:09 -0600
Subject: [PATCH] async-signature: `no_std` support (#1544)

---
 .github/workflows/async-signature.yml | 19 +++++++++++++++++++
 async-signature/src/lib.rs            |  1 +
 2 files changed, 20 insertions(+)

diff --git a/.github/workflows/async-signature.yml b/.github/workflows/async-signature.yml
index 775f402fc..468c2028f 100644
--- a/.github/workflows/async-signature.yml
+++ b/.github/workflows/async-signature.yml
@@ -18,6 +18,25 @@ env:
   RUSTFLAGS: "-Dwarnings"
 
 jobs:
+  no_std:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.75.0 # MSRV
+          - stable
+        target:
+          - thumbv7em-none-eabi
+          - wasm32-unknown-unknown
+    steps:
+      - uses: actions/checkout@v4
+      - uses: RustCrypto/actions/cargo-cache@master
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
+          targets: ${{ matrix.target }}
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features
+
   test:
     runs-on: ubuntu-latest
     strategy:
diff --git a/async-signature/src/lib.rs b/async-signature/src/lib.rs
index 08633dce8..cef50e8e5 100644
--- a/async-signature/src/lib.rs
+++ b/async-signature/src/lib.rs
@@ -1,3 +1,4 @@
+#![no_std]
 #![doc = include_str!("../README.md")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/RustCrypto/media/8f1a9894/logo.svg",