Upgrade Travis-ci Linux build environment to bionic

[skip AppVeyor]
In preparation for the end of xenial support

.travis.yml

@@ -41,7 +41,7 @@ jobs:
     osx_image: xcode11.3
     compiler: clang
   - os: linux
-    dist: xenial
+    dist: bionic
     compiler: gcc
 
 before_install:

travis/linux/after_success.sh

@@ -33,21 +33,17 @@ EOF
 # Icon
 cp Resources/images/gc.png appdir/
 
-### Add OpenSSL 1.1 libs (to make it easier for Xenial users)
-mkdir appdir/lib
-cp /usr/local/lib/libssl.so.1.1 appdir/lib
-cp /usr/local/lib/libcrypto.so.1.1 appdir/lib
-
 ### Add vlc 3
+mkdir appdir/lib
 cp -r /usr/lib/x86_64-linux-gnu/vlc appdir/lib/vlc
 sudo appdir/lib/vlc/vlc-cache-gen appdir/lib/vlc/plugins
 
 ### Download current version of linuxdeployqt
-wget --no-verbose -c https://github.com/probonopd/linuxdeployqt/releases/download/6/linuxdeployqt-6-x86_64.AppImage
-chmod a+x linuxdeployqt-6-x86_64.AppImage
+wget --no-verbose -c https://github.com/probonopd/linuxdeployqt/releases/download/7/linuxdeployqt-7-x86_64.AppImage
+chmod a+x linuxdeployqt-7-x86_64.AppImage
 
 ### Deploy to appdir
-./linuxdeployqt-6-x86_64.AppImage appdir/GoldenCheetah -verbose=2 -bundle-non-qt-libs -exclude-libs=libqsqlmysql,libqsqlpsql,libnss3,libnssutil3,libxcb-dri3.so.0
+./linuxdeployqt-7-x86_64.AppImage appdir/GoldenCheetah -verbose=2 -bundle-non-qt-libs -exclude-libs=libqsqlmysql,libqsqlpsql,libnss3,libnssutil3,libxcb-dri3.so.0 -unsupported-allow-new-glibc
 
 # Add Python and core modules
 wget https://github.com/niess/python-appimage/releases/download/python3.7/python3.7.9-cp37-cp37m-manylinux1_x86_64.AppImage
@@ -67,7 +63,7 @@ chmod a+x appimagetool-x86_64.AppImage
 ./appimagetool-x86_64.AppImage appdir
 
 ### Cleanup
-rm linuxdeployqt-6-x86_64.AppImage
+rm linuxdeployqt-7-x86_64.AppImage
 rm appimagetool-x86_64.AppImage
 rm -rf appdir
 

travis/linux/before_install.sh

@@ -2,26 +2,16 @@
 set -ev
 
 # Add recent Qt dependency ppa, update on a newer qt version.
-sudo add-apt-repository -y ppa:beineri/opt-qt-5.14.2-xenial
+sudo add-apt-repository -y ppa:beineri/opt-qt-5.14.2-bionic
 sudo apt-get update -qq
 sudo apt-get install -qq qt5-default qt514base qt514tools qt514serialport\
  qt514svg qt514multimedia qt514connectivity qt514webengine qt514charts-no-lgpl\
  qt514networkauth-no-lgpl qt514translations
 
-sudo apt-get install -qq libglu1-mesa-dev libgstreamer0.10-0 libgstreamer-plugins-base0.10-0
-sudo apt-get install -y --allow-downgrades libpulse0=1:8.0-0ubuntu3
-sudo apt-get install -qq libssl-dev libsamplerate0-dev libpulse-dev
-sudo apt-get install -qq libical-dev libkml-dev libboost-all-dev
-
-# Add OpenSSL 1.1.1 (required by Qt 5.14)
-wget https://www.openssl.org/source/openssl-1.1.1d.tar.gz
-tar xf openssl-1.1.1d.tar.gz
-cd openssl-1.1.1d
-./Configure shared --prefix=/usr --openssldir=/usr/lib/ssl --libdir=lib no-idea no-mdc2 no-rc5 no-zlib no-ssl3 enable-ec_nistp_64_gcc_128 linux-x86_64
-make -j4
-sudo cp libssl.so.1.1 libcrypto.so.1.1 /usr/local/lib/
-sudo ldconfig
-cd ..
+sudo apt-get install -qq libglu1-mesa-dev
+sudo apt-get install -qq libsamplerate0-dev
+sudo apt-get install -qq libkml-dev
+sudo apt-get install -qq libical-dev
 
 # Add VLC 3
 sudo add-apt-repository -y ppa:jonathonf/vlc-3
@@ -29,9 +19,9 @@ sudo add-apt-repository -y ppa:jonathonf/ffmpeg-4
 sudo apt-get update -qq
 sudo apt-get install -y vlc libvlc-dev libvlccore-dev
 
-# R 3.6
+# R 4.0
 sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
-sudo add-apt-repository -y "deb https://cloud.r-project.org/bin/linux/ubuntu xenial-cran35/"
+sudo add-apt-repository -y "deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/"
 sudo apt-get update -qq
 sudo apt-get install r-base-dev
 R --version