Compile all seven Arduino sketches on esp32, the board board_list.txt excludes none on

Author: aidangarske

.github/examples-manifest.yml

@@ -1210,14 +1210,14 @@ examples:
   - id: arduino-client-dtls
     path: Arduino/sketches/wolfssl_client_dtls
     tier: cross
-    mode: skip
-    reason: "Arduino/sketches/board_list.txt excludes it on every board CI can install: needs WOLFSSL_DTLS in the arduino library user_settings.h, and it overflows AVR RAM (194%)"
+    profile: all
+    mode: build-only
 
   - id: arduino-server-dtls
     path: Arduino/sketches/wolfssl_server_dtls
     tier: cross
-    mode: skip
-    reason: "Arduino/sketches/board_list.txt excludes it on every board CI can install: needs WOLFSSL_DTLS in the arduino library user_settings.h, and it overflows AVR RAM (194%)"
+    profile: all
+    mode: build-only
 
   - id: arduino-AES-CTR
     path: Arduino/sketches/wolfssl_AES_CTR

.github/workflows/cross-build.yml

@@ -265,24 +265,24 @@ jobs:
   arduino:
     name: arduino (${{ matrix.sketch }})
     runs-on: ubuntu-24.04
-    timeout-minutes: 25
+    timeout-minutes: 30
     strategy:
       fail-fast: false
       matrix:
-        # board_list.txt excludes the two dtls sketches on this board: they need
-        # WOLFSSL_DTLS in the arduino library's user_settings.h. esp32 takes all
-        # seven but needs a third-party core URL.
+        # board_list.txt excludes nothing on esp32, unlike the avr/samd boards
+        # (the networking sketches include <WiFi.h>, which only esp32 provides,
+        # and wolfSSL overflows AVR RAM at 194%).
         sketch:
           - template
           - wolfssl_version
           - wolfssl_AES_CTR
           - wolfssl_client
           - wolfssl_server
+          - wolfssl_client_dtls
+          - wolfssl_server_dtls
     steps:
       - uses: actions/checkout@v5
 
-      # arduino.yml compiles the sketches inside the *installed* wolfSSL Arduino
-      # library, never this repo's Arduino/sketches/*, so nothing built these.
       # sudo drops BINDIR, so let the installer use its default $PWD/bin and put
       # that on PATH -- GITHUB_PATH only applies to later steps, hence the split.
       - name: Install arduino-cli
@@ -291,11 +291,14 @@ jobs:
           curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh
           echo "$PWD/bin" >> "$GITHUB_PATH"
 
-      - name: Install the samd core
+      - name: Install the esp32 core
         run: |
           set -euo pipefail
+          arduino-cli config init
+          arduino-cli config add board_manager.additional_urls \
+            https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
           arduino-cli core update-index
-          arduino-cli core install arduino:samd
+          arduino-cli core install esp32:esp32
 
       # Generate the Arduino library from wolfSSL source with wolfSSL's own
       # script, so this tracks master rather than a published snapshot.
@@ -313,7 +316,7 @@ jobs:
         run: |
           set -euo pipefail
           cd 'Arduino/sketches/${{ matrix.sketch }}'
-          arduino-cli compile --fqbn arduino:samd:mkrwifi1010 \
+          arduino-cli compile --fqbn esp32:esp32:esp32 \
             --libraries "$HOME/Arduino/libraries" . --warnings none
 
   # cross-build.yml already triggers on puf/**, but had no job to run: editing