add Cirrus-CI

.cirrus.yml

@@ -0,0 +1,44 @@
+freebsd_task:
+  name: "freebsd:12.1"
+  freebsd_instance:
+    image_family: freebsd-12-1
+  env:
+    ASSUME_ALWAYS_YES: yes
+  script:
+    - tools/install-build-pkgs
+    - gmake
+
+linux_task:
+  name: "alpine:3.11"
+  container:
+    image: alpine:3.11
+    cpu: 4
+    memory: 2G
+  timeout_in: 10m
+  script:
+    - tools/install-build-pkgs
+    - make STATIC=1 LTO=1
+
+linux_task:
+  name: "centos:7"
+  container:
+    image: centos:7
+    cpu: 4
+    memory: 2G
+  timeout_in: 10m
+  script:
+    - tools/install-build-pkgs
+    - make
+    - make rpm
+
+linux_task:
+  name: "centos:8"
+  container:
+    image: centos:8
+    cpu: 4
+    memory: 2G
+  timeout_in: 10m
+  script:
+    - tools/install-build-pkgs
+    - make
+    - make rpm

tools/install-build-pkgs

@@ -1,16 +1,24 @@
 #!/bin/sh
 
 if [ -e /usr/bin/apt-get ]; then
+    export DEBIAN_FRONTEND=noninteractive
     apt-get -qy update
-    apt-get -qy --no-install-suggests --no-install-recommends --force-yes \
+    apt-get -qy --no-install-suggests --no-install-recommends \
 	    install \
-            build-essential git g++ debhelper \
-            python \
-            automake libtool lsb-release
+            ca-certificates \
+            build-essential \
+            git \
+            g++ \
+            debhelper \
+            automake \
+            libtool \
+            lsb-release
+    apt-get -qy --no-install-suggests --no-install-recommends install python
+    apt-get -qy --no-install-suggests --no-install-recommends install python3
 elif [ -e /usr/bin/dnf ]; then
     dnf -y update
     dnf -y install \
-        git rpm-build gcc-c++ make which python automake \
+        git rpm-build gcc-c++ make which python3 automake \
         libtool gettext-devel
 elif [ -e /usr/bin/yum ]; then
     yum -y update
@@ -27,3 +35,11 @@ elif [ -e /usr/sbin/pkg ]; then
         git gmake gcc autoconf automake libtool \
         gettext-tools
 fi
+
+if [ ! -e /usr/bin/python ]; then
+    if [ -e /usr/bin/python3 ]; then
+        ln -s /usr/bin/python3 /usr/bin/python
+    elif [ -e /usr/bin/python2 ]; then
+        ln -s /usr/bin/python2 /usr/bin/python
+    fi
+fi