diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..f005f67
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,66 @@
+stages:
+    - build
+    - test
+
+.build:
+    stage: build
+    before_script:
+        - apt-get update && apt-get install -y build-essential exim4-dev libsodium-dev
+    script:
+        - cd src
+        - make all
+    artifacts:
+        paths:
+            - src/genkey
+            - src/libexim-encrypt-dlfunc.so
+
+build:buster:
+    extends:
+        - .build
+    image: debian:buster
+
+build:bullseye:
+    image: debian:bullseye
+    extends:
+        - .build
+
+build:bionic:
+    image: ubuntu:bionic
+    extends:
+        - .build
+
+build:focal:
+    image: ubuntu:focal
+    extends:
+        - .build
+.test:
+    stage: test
+    before_script:
+        - apt-get update && apt-get install -y exim4-daemon-heavy openssl libsodium23
+    script:
+        - cd src
+        - ./simple_exim_test.sh
+
+test:buster:
+    extends:
+        - .test
+    needs: ["build:buster"]
+    image: debian:buster
+
+test:bullseye:
+    extends:
+        - .test
+    needs: ["build:bullseye"]
+    image: debian:bullseye
+
+test:bionic:
+    extends:
+        - .test
+    needs: ["build:bionic"]
+    image: ubuntu:bionic
+
+test:focal:
+    extends:
+        - .test
+    needs: ["build:focal"]
+    image: ubuntu:focal
diff --git a/src/Makefile b/src/Makefile
index 9ef30e9..5964293 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,11 +1,11 @@
 CC=gcc
-CFLAGS=-I/usr/include/exim4 -g -O2 -ffile-prefix-map=/=. -fstack-protector-strong -Wformat -Werror=format-security
-LDFLAGS=-Wl,-z,relro -lsodium
-LDFLAGS_LIB=-fpic -shared -export-dynamic
+CFLAGS=-I/usr/include/exim4 -g
+LDFLAGS=-lsodium
+LDFLAGS_LIB=-fpic -shared
 
 .PHONY: clean all
 
-.DEFAULT_GOAL := libexim-encrypt-dlfunc.so
+.DEFAULT_GOAL := all
 
 libexim-encrypt-dlfunc.so: libexim-encrypt-dlfunc.c
 	$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS) $(LDFLAGS_LIB)