From c2bb18622d06318324cd7eaf717c920c58cc0047 Mon Sep 17 00:00:00 2001
From: Lennart Braun <lenerd@posteo.de>
Date: Mon, 29 Jul 2019 18:12:42 +0200
Subject: [PATCH] Update Travis to Ubuntu Bionic

Use explicit apt-get commands since the APT addon is currently not
working.  Also, update CMake version.
---
 .travis.yml | 18 +++++-------------
 1 file changed, 5 insertions(+), 13 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 16d93353..6092d7a3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,23 +1,15 @@
 language: cpp
 compiler: g++
-dist: xenial
-
-addons:
-  apt:
-    sources:
-    - sourceline: 'ppa:ubuntu-toolchain-r/test'
-    - sourceline: 'ppa:mhier/libboost-latest'
-    packages:
-    - g++-8
-    - libboost1.67-dev
-    - libgmp-dev
-    - libssl-dev
+dist: bionic
 
 before_install:
+  - sudo add-apt-repository -y ppa:mhier/libboost-latest
+  - sudo apt-get update
+  - sudo apt-get install -y g++-8 libboost1.70-dev libgmp-dev libssl-dev
   # Install a recent CMake
   - mkdir $HOME/prefix
   - export PATH="$HOME/prefix/bin:$PATH"
-  - wget https://cmake.org/files/v3.14/cmake-3.14.0-Linux-x86_64.sh -O cmake_install.sh
+  - wget https://cmake.org/files/v3.15/cmake-3.15.1-Linux-x86_64.sh -O cmake_install.sh
   - chmod +x cmake_install.sh
   - ./cmake_install.sh --prefix=$HOME/prefix --exclude-subdir --skip-license