Add actions to just run make and test

Author: take-cheeze

.github/workflows/test.yml

@@ -0,0 +1,12 @@
+on:
+  push:
+    branches:
+      - main
+  pull_request: {}
+
+jobs:
+  build_and_test:
+    runs-on: ubuntu-slim
+    steps:
+      - run: make
+      - run: make test

Makefile

@@ -25,7 +25,7 @@ endif
 
 HOST_CC=gcc
 CC=$(CROSS_PREFIX)gcc
-CFLAGS=-Wall -g -MMD -Werror -D_GNU_SOURCE -fno-math-errno -fno-trapping-math
+CFLAGS=-Wall -g -MMD -Werror -Wno-error=unused-result -D_GNU_SOURCE -fno-math-errno -fno-trapping-math
 HOST_CFLAGS=-Wall -g -MMD -Werror -D_GNU_SOURCE -fno-math-errno -fno-trapping-math
 ifdef CONFIG_ARM32
 CFLAGS+=-mthumb