Add CI job for avr-unknown-gnu-atmega328

.github/workflows/ci.yml

@@ -47,3 +47,51 @@ jobs:
 
       - name: Build Documentation
         run: cargo doc --no-deps
+
+  build-avr:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Install build dependencies
+        shell: bash
+        run: |
+          env && pwd && sudo apt-get update -y -qq && sudo apt-get install -y -qq llvm gcc-avr avr-libc libclang-dev
+
+      - name: Install rust
+        run: rustup toolchain install --profile minimal --component=rust-src nightly
+
+      - name: Configure target
+        run: |
+          cat <<EOT > avr-atmega328p.json
+          {
+            "arch": "avr",
+            "atomic-cas": false,
+            "cpu": "atmega328p",
+            "data-layout": "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8",
+            "eh-frame-header": false,
+            "exe-suffix": ".elf",
+            "late-link-args": {
+              "gcc": [
+                "-lgcc"
+              ]
+            },
+            "linker": "avr-gcc",
+            "llvm-target": "avr-unknown-unknown",
+            "max-atomic-width": 8,
+            "no-default-libraries": false,
+            "pre-link-args": {
+              "gcc": [
+                "-mmcu=atmega328p"
+              ]
+            },
+            "relocation-model": "static",
+            "target-c-int-width": "16",
+            "target-pointer-width": "16"
+          }
+          EOT
+
+      - name: Patch delog
+        run: echo 'delog = { version = "0.1.6", git = "https://github.com/LechevSpace/delog.git", rev = "e83f3fd" }' >> Cargo.toml
+
+      - name: Build avr
+        run: cargo +nightly build -Z build-std=core --target=./avr-atmega328p.json --release