diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
new file mode 100644
index 0000000..f02124b
--- /dev/null
+++ b/.github/workflows/ccpp.yml
@@ -0,0 +1,13 @@
+name: C/C++ CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v2
+    - name: make
+      run: make
diff --git a/Makefile b/Makefile
index 8de529c..f112445 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CFLAGS=-Wall -fno-strict-aliasing -fwrapv -Wstrict-prototypes -std=c99 -lm
+CXXFLAGS=-Wall -fno-strict-aliasing -fwrapv -Wstrict-prototypes -std=c99 -lm -fpermissive -Wint-to-pointer-cast
 all: pifm
 
 clean: