Add FreeBSD Cirrus CI (#580)

.cirrus.yml

@@ -0,0 +1,12 @@
+task:
+  freebsd_instance:
+    matrix:
+      image: freebsd-12-1-release-amd64
+  install_script:
+    - pkg install -y bash cmake fusefs-libs gettext perl5
+    - ln -s /usr/local/bin/bash /bin/bash
+    - ./ci/setup.sh
+  script:
+    - ./build.sh
+  env:
+    INTEGRATION: false

ci/setup.sh

@@ -5,6 +5,8 @@
 if [[ "$INTEGRATION" == "true" ]]; then
   if uname -s | grep -q Linux; then
     sudo modprobe fuse
+  elif uname -s | grep -q FreeBSD; then
+    kldload fuse
   elif uname -s | grep -q Darwin; then
     brew cask install osxfuse
     brew reinstall openssl