Added Arm64 Travis build

.editorconfig

@@ -13,6 +13,6 @@ indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true
 
-[*.{ttl,ttl.in,yml}]
+[*.{ttl,ttl.in,sh,yml}]
 indent_size = 2
 indent_style = space

.gitignore

@@ -30,3 +30,4 @@ node_modules/
 .sass-cache
 *.lock
 *.sublime-*
+*.code-*

.travis.yml

@@ -1,8 +1,22 @@
 language: cpp
-
-matrix:
+jobs:
   include:
-  - os: linux
+  - os:   linux
+    arch: amd64
+    dist: bionic
+    addons:
+      apt:
+        sources:
+        - sourceline: 'ppa:ubuntu-toolchain-r/test'
+        packages:
+        - gcc-8
+        - g++-8
+        - doxygen
+    env:
+    - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"
+
+  - os:   linux
+    arch: arm64
     dist: bionic
     addons:
       apt:
@@ -38,11 +52,11 @@ after_success:
 deploy:
   provider: releases
   skip_cleanup: true
-  api_key:
+  token:
     secure: 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
   file: "$DEPLOYFILE"
   on:
-    repo: sfztools/sfizz
+    repo: ${TRAVIS_REPO_SLUG}
     tags: true
 
 notifications:
@@ -56,4 +70,4 @@ notifications:
     - "%{commit_subject}"
     - "Commit URL    : https://github.com/%{repository_slug}/commit/%{commit}"
     - "Change View   : %{compare_url}"
-    - "Build Details : %{build_url}"  
+    - "Build Details : %{build_url}"

.travis/before_install.sh

@@ -1,12 +1,20 @@
 #!/bin/bash
 
-set -e
+set -ex
 
-if [ "$TRAVIS_OS_NAME" = "linux" ]; then
-  wget https://cmake.org/files/v3.13/cmake-3.13.0-Linux-x86_64.sh
-  sudo sh cmake-3.13.0-Linux-x86_64.sh --skip-license --prefix=/usr/local
+cmake_dir="cmake-3.13.0-${TRAVIS_OS_NAME}-${TRAVIS_CPU_ARCH}"
+cmake_arc="${cmake_dir}.tar.gz"
+cmake_url="https://github.com/${TRAVIS_REPO_SLUG}/releases/download/${TRAVIS_OS_NAME}/${cmake_arc}"
+
+if [ ${TRAVIS_OS_NAME} = "linux" ]; then
+  wget -q ${cmake_url}
+  tar xzf ${cmake_arc}
+  cd ${TRAVIS_BUILD_DIR}/${cmake_dir}
+  sudo cp    bin/*   /usr/local/bin/
+  sudo cp -r doc     /usr/local/share/
+  sudo cp -r share/* /usr/local/share/
   export PATH="/usr/local/bin:$PATH" # FIXME
-elif [ "$TRAVIS_OS_NAME" = "osx" ]; then
+elif [ ${TRAVIS_OS_NAME} = "osx" ]; then
   sudo ln -s /usr/local /opt/local
   brew update
   brew upgrade cmake