Add workflow to create tarball for Linux

.github/workflows/package-linux-tarball.yml

@@ -0,0 +1,31 @@
+name: package-linux-tarball
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  package:
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        submodules: true
+
+    - name: Install Qt 6
+      uses: jurplel/install-qt-action@v3
+      with:
+        version: '6.6.1'
+        set-env: true
+
+    - name: Run tarball script
+      run: |
+        ./packaging/package-linux-tarball.sh .
+        mv mrtrix.tar.gz mrtrix-$(git describe --tags --abbrev=0)-linux.tar.gz
+
+    - name: Upload package to GitHub Release
+      uses: AButler/upload-release-assets@v2.0
+      with:
+        files: '*.tar.gz'
+        repo-token: ${{ secrets.GITHUB_TOKEN }}

CMakeLists.txt

@@ -132,6 +132,7 @@ add_custom_target(Github SOURCES
     .github/ISSUE_TEMPLATE/custom.md
     .github/ISSUE_TEMPLATE/feature_request.md
     .github/workflows/checks.yml
+    .github/workflows/package-linux-tarball.yml
     .github/workflows/package-linux-anaconda.yml
     .github/workflows/package-macos-anaconda.yml
     .github/workflows/package-macos-native.yml

install_mime_types.sh

@@ -16,11 +16,11 @@
 # For more details, see http://www.mrtrix.org/.
 
 for s in 16 32 48 64 128; do
-  xdg-icon-resource install --context apps --size $s icons/desktop/${s}x${s}/mrtrix.png application-x-mrtrix
-  xdg-icon-resource install --context mimetypes --size $s icons/desktop/${s}x${s}/mrtrix.png x-mrtrix
+  xdg-icon-resource install --context apps --size $s share/icons/hicolor/${s}x${s}/apps/application-x-mrtrix.png application-x-mrtrix
+  xdg-icon-resource install --context mimetypes --size $s share/icons/hicolor/${s}x${s}/apps/application-x-mrtrix.png x-mrtrix
 done
 
-xdg-mime install mrtrix-mime.xml
-sed s^Exec=mrview^Exec=$(pwd)/bin/mrview^ < mrview.desktop > mrtrix-mrview.desktop
+xdg-mime install share/mime/mrtrix-mime.xml
+sed s^Exec=mrview^Exec=$(pwd)/bin/mrview^ < 'share/applications/mrview.desktop' > mrtrix-mrview.desktop
 xdg-desktop-menu install mrtrix-mrview.desktop
 

packaging/package-linux-tarball.sh

@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+
+# This is a script to package mrtrix3 as a tarball. It is intended to be
+# run on a system with a package manager that supports apt (e.g. Ubuntu).
+# It will automatically install the necessary dependencies to build but
+# it assumes that the host system has an existing installation of Qt 6.
+# NOTE: if you're using a custom installation of Qt, you may need to
+# set the environment variable QMAKE to point to the qmake executable
+# of your Qt installation (and possible set LD_LIBRARY_PATH to point to
+# root_of_qt_installation/lib).
+# The script takes the source directory as an argument and creates a tarball
+# containing the built binaries and the necessary helper scripts.
+
+# Usage: ./package-linux-tarball.sh /path/to/source/directory
+
+running_dir=$(pwd)
+source_dir=$(realpath $1)
+tarball_dir=$running_dir/mrtrix_tarball_tmp
+
+set -e
+
+clean_up() {
+  printf "Cleaning up.\n"
+  rm -rf $tarball_dir
+}
+
+mkdir -p $tarball_dir
+
+trap clean_up EXIT
+
+if [ ! -d "$1" ]; then
+  printf "Source directory does not exist: $1"
+  exit 1
+fi
+
+printf "Installing dependencies to build the project.\n"
+
+sudo apt install cmake \
+    '^libxcb.*-dev' \
+    libgl1-mesa-dev \
+    ninja-build \
+    python3 \
+    libeigen3-dev \
+    zlib1g-dev \
+    libfftw3-dev \
+    libtiff5-dev \
+    libpng-dev
+
+if ! command -v clang++-17 &> /dev/null
+then
+    printf "Clang 17 not found, installing it.\n"
+    wget https://apt.llvm.org/llvm.sh
+    chmod +x llvm.sh
+    sudo ./llvm.sh 17
+fi
+
+printf "Configuring and building the project.\n"
+
+build_dir=$tarball_dir/build_tarball
+install_dir=$tarball_dir/install_tarball
+
+cd $tarball_dir
+
+cmake -B $build_dir -S $source_dir \
+    -G Ninja \
+    -DCMAKE_CXX_COMPILER=clang++-17 \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=$install_dir \
+    -DCMAKE_EXE_LINKER_FLAGS="-Wl,--as-needed" \
+    -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON
+
+cmake --build $build_dir
+cmake --install $build_dir
+
+printf "Running linuxdeploy.\n"
+
+wget "https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage"
+wget "https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/download/continuous/linuxdeploy-plugin-qt-x86_64.AppImage"
+chmod +x linuxdeploy-x86_64.AppImage
+chmod +x linuxdeploy-plugin-qt-x86_64.AppImage
+mkdir appdir && mkdir appdir/usr
+cp -r $install_dir/* appdir/usr
+./linuxdeploy-x86_64.AppImage --appdir appdir --plugin qt
+
+printf "Creating the tarball.\n"
+
+rm -rf appdir/usr/translations # Remove translations since we don't need them
+cp $source_dir/install_mime_types.sh appdir/usr
+cp $source_dir/set_path appdir/usr
+tar -czf mrtrix.tar.gz -C appdir/usr .
+cp mrtrix.tar.gz $running_dir

share/CMakeLists.txt

@@ -6,4 +6,16 @@ add_custom_target(copy-share-data ALL
 
 install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/mrtrix3/
     DESTINATION ${CMAKE_INSTALL_DATADIR}/mrtrix3
+)
+
+install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/icons/hicolor
+    DESTINATION ${CMAKE_INSTALL_DATADIR}/icons
+)
+
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/applications/mrview.desktop
+    DESTINATION ${CMAKE_INSTALL_DATADIR}/applications
+)
+
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/mime/mrtrix-mime.xml
+    DESTINATION ${CMAKE_INSTALL_DATADIR}/mime
 )