diff --git a/.ci/unix-build.sh b/.ci/unix-build.sh
new file mode 100755
index 0000000..914befa
--- /dev/null
+++ b/.ci/unix-build.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+mkdir build && cd build
+cmake -DCMAKE_BUILD_TYPE=Release ..
+cmake --build .
diff --git a/.ci/unix-test.sh b/.ci/unix-test.sh
new file mode 100755
index 0000000..3d6c865
--- /dev/null
+++ b/.ci/unix-test.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+cd build
+ctest -E Windows
+if [ -f "test/std_filesystem_test" ]; then
+  test/std_filesystem_test || true
+fi
diff --git a/.cirrus.yml b/.cirrus.yml
new file mode 100644
index 0000000..6e4cd62
--- /dev/null
+++ b/.cirrus.yml
@@ -0,0 +1,13 @@
+freebsd_instance:
+  image_family: freebsd-12-1
+
+task:
+  install_script: |
+    pkg install -y cmake
+    pw groupadd testgrp
+    pw useradd testuser -g testgrp -w none -m
+    chown -R testuser:testgrp .
+  build_script: |
+    sudo -u testuser .ci/unix-build.sh
+  test_script: |
+    sudo -u testuser .ci/unix-test.sh