Add build image for Ubuntu 20.04

linux/packages/ubuntu-20.04/Dockerfile

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+FROM ubuntu:20.04
+
+LABEL maintainer="d.vedenko@audacityteam.org"
+LABEL description="A build environment to check the builds for Ubuntu package maintainers"
+LABEL version="3.0"
+
+COPY ["dependencies.sh", "/dependencies.sh"]
+RUN ./dependencies.sh
+
+COPY ["entrypoint.sh", "/entrypoint.sh"]
+
+RUN useradd -m user
+
+COPY ["debian", "/home/user/audacity-3.0.3/debian"]
+
+RUN chown -R user /home/user/audacity-3.0.3
+
+USER user
+WORKDIR /home/user
+
+ENTRYPOINT ["bash", "-ex", "/entrypoint.sh"]

linux/packages/ubuntu-20.04/debian/changelog

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+audacity (3.0.3-1) UNRELEASED; urgency=medium
+
+  * Initial release. (Closes: #XXXXXX)
+
+ -- Dmitry Vedenko <dvedenko@ubuntu>  Mon, 02 Aug 2021 14:55:02 +0300

linux/packages/ubuntu-20.04/debian/control

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+Source: audacity
+Section: sound
+Priority: optional
+Maintainer:
+Uploaders: 
+Standards-Version: 4.5.0
+Build-Depends: cmake,
+               debhelper-compat (= 12),
+               gettext,
+               git,
+               libgtk2.0-dev,
+               libasound2-dev,
+               libavformat-dev,
+               libjack-jackd2-dev,
+               zlib1g-dev,
+               libexpat1-dev,
+               libmp3lame-dev,
+               libsndfile-dev,
+               libsoxr-dev,
+               portaudio19-dev,
+               libsqlite3-dev,
+               libavcodec-dev,
+               libavformat-dev,
+               libavutil-dev,
+               libid3tag0-dev,
+               libmad0-dev,
+               libvamp-hostsdk3v5,
+               libogg-dev,
+               libvorbis-dev,
+               libflac-dev,
+               libflac++-dev,
+               lv2-dev,
+               liblilv-dev,
+               libserd-dev,
+               libsord-dev,
+               libsratom-dev,
+               libsuil-dev,
+               libportmidi-dev,
+               libportsmf-dev,
+               libsbsms-dev,
+               libsoundtouch-dev,
+               libtwolame-dev,
+               libpng-dev,
+               libjpeg-turbo8-dev
+Homepage: https://www.audacityteam.org/
+Rules-Requires-Root: no
+
+Package: audacity
+Architecture: amd64
+Depends: ${misc:Depends},
+         ${shlibs:Depends}
+Description: Audacity is a multi-track audio editor for Linux/Unix, MacOS and
+ Windows.  

linux/packages/ubuntu-20.04/debian/rules

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+#!/usr/bin/make -f
+
+include /usr/share/dpkg/architecture.mk
+
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+
+export CONAN_USER_HOME = $(shell pwd)/audacity-offline-dependencies/conan_home
+export PATH := $(shell pwd)/conan_env/bin:$(PATH)
+
+%:
+	dh $@
+
+override_dh_auto_configure:
+	dh_auto_configure -- \
+	-DCMAKE_BUILD_TYPE=Release \
+	-Daudacity_conan_allow_prebuilt_binaries=no \
+	-Daudacity_lib_preference=system \
+	-Daudacity_obey_system_dependencies=On \
+	-Daudacity_use_pch=no \
+	-Daudacity_use_wxwidgets=local \
+	-Daudacity_use_portaudio=local \
+	-Daudacity_use_vamp=local \
+	-Daudacity_use_sbsms=local 
+
+# tests fails with system portaudio
+override_dh_auto_test:
+
+override_dh_shlibdeps:
+	dh_shlibdeps -l$(shell pwd)/debian/audacity/usr/lib/$(DEB_BUILD_GNU_TYPE)/audacity
+
+execute_after_dh_auto_install:
+	#mv debian/audacity/usr/share/appdata/ debian/audacity/usr/share/metainfo/
+	rm debian/audacity/usr/share/doc/audacity/LICENSE.txt
+
+execute_before_dh_auto_configure:
+	python3 -m venv conan_env
+	conan_env/bin/pip3 install --no-index --find-links "./audacity-offline-dependencies/pip_cache" conan 
+
+	mkdir -p ${CONAN_USER_HOME}
+
+	conan config home
+	conan config init
+	conan config set storage.download_cache="${CONAN_USER_HOME}/download_cache"
+	conan profile update settings.compiler.libcxx=libstdc++11 default

linux/packages/ubuntu-20.04/debian/source/format

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+3.0 (quilt)

linux/packages/ubuntu-20.04/dependencies.sh

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+#!/usr/bin/env bash
+
+export TZ=Europe/London
+ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
+build_deps=(
+   build-essential 
+   fakeroot 
+   devscripts
+   gcc
+   g++
+   git
+   python3
+   python3-setuptools
+   python3-venv
+   python3-wheel
+   python3-pip
+   python3-dev
+   wget
+   cmake
+)
+
+deps=(
+   libgtk2.0-dev
+   libasound2-dev
+   libavformat-dev
+   libjack-jackd2-dev
+   zlib1g-dev
+   libexpat1-dev
+   libmp3lame-dev
+   libsndfile-dev
+   libsoxr-dev
+   portaudio19-dev
+   libsqlite3-dev
+   libavcodec-dev
+   libavformat-dev
+   libavutil-dev
+   libid3tag0-dev
+   libmad0-dev
+   libvamp-hostsdk3v5
+   libogg-dev
+   libvorbis-dev
+   libflac-dev
+   libflac++-dev
+   lv2-dev
+   liblilv-dev
+   libserd-dev
+   libsord-dev
+   libsratom-dev
+   libsuil-dev
+   libportmidi-dev
+   libportsmf-dev
+   libsbsms-dev
+   libsoundtouch-dev
+   libtwolame-dev
+   libpng-dev
+   libjpeg-turbo8-dev
+)
+
+apt-get update
+apt-get install -y \
+   "${build_deps[@]}" \
+   "${deps[@]}" 

linux/packages/ubuntu-20.04/entrypoint.sh

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+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+cmake_args=(
+    -D CMAKE_BUILD_TYPE=Release
+
+    -D audacity_conan_allow_prebuilt_binaries=no
+
+    -D audacity_lib_preference=system # Change the libs default to 'system'
+    -D audacity_obey_system_dependencies=On # And force it!
+
+    -D audacity_use_pch=no
+
+    -D audacity_use_wxwidgets=local # wxWidgets 3.1 is not available
+    -D audacity_use_portaudio=local # System portaudio is not yet usable
+    -D audacity_use_vamp=local
+    -D audacity_use_sbsms=local # We rely on 2.2.0, 2.0.l2 is API incompatible
+)
+
+if [[ $1 == "prepare" ]]; then
+    tar -xzf /work_dir/audacity-sources.tar.gz
+    
+    audacity/linux/packages/prepare_offline_dependencies.sh "${cmake_args[@]}"
+
+    cp audacity-offline-dependencies.tar.gz /work_dir/audacity-offline-dependencies-ubuntu-20.04.tar.gz
+elif [[ $1 == "build" ]]; then
+    tar -xzf /work_dir/audacity-sources.tar.gz
+    tar -xzf /work_dir/audacity-offline-dependencies-ubuntu-20.04.tar.gz
+
+    audacity/linux/packages/build_package.sh "${cmake_args[@]}"
+
+    cp audacity-linux_x86_64.tar.gz /work_dir/audacity-ubuntu-20.04_x86_64.tar.gz
+elif [[ $1 == "package" ]]; then
+    mkdir orig
+
+    pushd orig
+        tar -xzf /work_dir/audacity-sources.tar.gz
+
+        pushd audacity
+            tar -xzf /work_dir/audacity-offline-dependencies-ubuntu-20.04.tar.gz
+        popd
+
+        mv audacity audacity-3.0.3
+
+        tar -czf ../audacity_3.0.3.orig.tar.gz audacity-3.0.3
+    popd
+
+    cp -r orig/audacity-3.0.3/* audacity-3.0.3
+
+    rm -r orig
+
+    pushd audacity-3.0.3
+        debuild -us -uc
+    popd
+
+    cp -v *.deb /work_dir/
+fi