Merge branch 'gretel-actions' into trunk

adds basic CI to ensure all build targets compile

* gretel-actions:
  removed test branch from action triggers (the action works and seems ready to merge)
  test: is apt-get any faster than apt?
  github actions: cache the Atmel DFP files between runs
  fixed intentional error, because CI build-fail test worked correctly
  help CI detect build failures
  initial test to fix branch names and see if actions work
  basic compile workflow publishing artifacts to test

3 files changed, 52 insertions, 2 deletions

diff --git a/.github/workflows/compile.yml b/.github/workflows/compile.yml
new file mode 100644
index 0000000..fabcf31
--- /dev/null
+++ b/.github/workflows/compile.yml
@@ -0,0 +1,49 @@
+name: build all
+
+on:
+  push:
+    branches: [ "trunk" ]
+  pull_request:
+    branches: [ "trunk" ]
+
+jobs:
+  compile:
+    runs-on: ubuntu-latest
+
+    steps:
+
+    - name: Checkout
+      uses: actions/checkout@master
+
+    - name: Requirements
+      run: |
+        sudo apt-get -qqy update
+        sudo apt-get -qqy install avr-libc binutils-avr gcc-avr unzip wget
+
+    - name: Cache Atmel DFPs
+      id: cache-dfp
+      uses: actions/cache@v3
+      env:
+        cache-name: cache-dfp-files
+      with:
+        path: arch/dfp
+        # new cache whenever the dfp-install script changes
+        key: ${{ runner.os }}-${{ env.cache-name }}-${{ hashFiles('bin/dfp-install.sh') }}
+
+    - name: Install Atmel DFPs
+      if: steps.cache-dfp.outputs.cache-hit != 'true'
+      run: |
+        ./make dfp
+
+    - name: Compile All
+      run: |
+        ./make
+        echo "ARTIFACT_NAME=${GITHUB_WORKFLOW}-${GITHUB_REF_NAME}-$(git rev-parse --short ${GITHUB_SHA})-${GITHUB_RUN_NUMBER}" >> "${GITHUB_ENV}"
+
+    - name: Store Artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ env.ARTIFACT_NAME }}
+        if-no-files-found: error
+        path: |
+          hex/*.hex
diff --git a/bin/build-all.sh b/bin/build-all.sh
index 2d443a5..ac8ea98 100755
--- a/bin/build-all.sh
+++ b/bin/build-all.sh
@@ -66,4 +66,5 @@ echo "===== $PASS builds succeeded, $FAIL failed ====="
 #echo "PASS: $PASSED"
 if [ 0 != $FAIL ]; then
   echo "FAIL:$FAILED"
+  exit 1
 fi
diff --git a/make b/make
index 8d3d801..89e196d 100755
--- a/make
+++ b/make
@@ -59,7 +59,7 @@ function main() {
       ;;
     dfp)
       shift
-      ./bin/dfp-install.sh "$@"
+      exec ./bin/dfp-install.sh "$@"
       ;;
     docs)
       make-docs
@@ -79,7 +79,7 @@ function main() {
       grep -E 'TODO:|FIXME:' **/*.[ch]
       ;;
     *)
-      ./bin/build-all.sh "$@"
+      exec ./bin/build-all.sh "$@"
       ;;
   esac
 }