Add CircleCI Scala Native steps

Author: lolgab

.circleci/config.yml

@@ -13,6 +13,9 @@ executors:
   scala_jdk16_executor:
     docker:
       - image: circleci/openjdk:16-buster
+  scala_native_executor:
+    machine:
+      image: ubuntu-1604:202004-01
 
 commands:
   sbt_cmd:
@@ -76,6 +79,31 @@ jobs:
       - sbt_cmd:
           scala_version: << parameters.scala_version >>
           sbt_tasks: xmlJS/update xmlJS/compile xmlJS/test:compile xmlJS/test xmlJS/doc xmlJS/package
+  scalanative_job:
+    executor: scala_native_executor
+    parameters:
+      scala_version:
+        description: "Scala version"
+        default: 2.12.13
+        type: string
+      scalanative_version:
+        description: "Scala Native version"
+        default: 0.4.0
+        type: string
+    environment:
+      SCALANATIVE_VERSION: << parameters.scalanative_version >>
+    steps:
+      - checkout
+      - run:
+          name: Install dependencies
+          command: |
+            echo "deb https://dl.bintray.com/sbt/debian /" | sudo tee -a /etc/apt/sources.list.d/sbt.list
+            curl -sL "https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x2EE0EA64E40A89B84B2DF73499E82A75642AC823" | sudo apt-key add
+            sudo apt-get update
+            sudo apt-get install sbt clang-8 openjdk-8-jdk
+      - sbt_cmd:
+          scala_version: << parameters.scala_version >>
+          sbt_tasks: xmlNative/update xmlNative/compile xmlNative/test:compile xmlNative/test xmlNative/doc xmlNative/package
 
 workflows:
   build:
@@ -140,3 +168,11 @@ workflows:
           name: sjs1.0_2.13
           scala_version: 2.13.4
           scalajs_version: 1.4.0
+      - scalanative_job:
+          name: native0.4_2.12
+          scala_version: 2.12.13
+          scalanative_version: 0.4.0
+      - scalanative_job:
+          name: native0.4_2.13
+          scala_version: 2.13.4
+          scalanative_version: 0.4.0

.scalafmt.conf

@@ -0,0 +1 @@
+version = "2.7.4"