Is there a way to install eCAL without GUI dependencies?

[chengguizi]

Say if I need to operate eCAL in headless embedded environment, I would love to save space, hence no GUI dependencies is preferred.

Currently there is a lot to install

sudo apt-get install ecal
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  adwaita-icon-theme at-spi2-core fontconfig fontconfig-config fonts-dejavu-core gtk-update-icon-cache hicolor-icon-theme humanity-icon-theme
  libaec0 libatk-bridge2.0-0 libatk1.0-0 libatk1.0-data libatspi2.0-0 libavahi-client3 libavahi-common-data libavahi-common3 libcairo-gobject2
  libcairo2 libcolord2 libcups2 libdatrie1 libdouble-conversion3 libdrm-amdgpu1 libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libegl-mesa0 libegl1
  libepoxy0 libevdev2 libfontconfig1 libgbm1 libgdk-pixbuf2.0-0 libgdk-pixbuf2.0-bin libgdk-pixbuf2.0-common libgfortran5 libgl1 libgl1-mesa-dri
  libglapi-mesa libglvnd0 libglx-mesa0 libglx0 libgraphite2-3 libgtk-3-0 libgtk-3-bin libgtk-3-common libharfbuzz0b libhdf5-103 libice6
  libinput-bin libinput10 libjbig0 libjpeg-turbo8 libjpeg8 liblcms2-2 libllvm12 libmtdev1 libpango-1.0-0 libpangocairo-1.0-0 libpangoft2-1.0-0
  libpciaccess0 libpcre2-16-0 libpixman-1-0 libprotobuf17 libqt5core5a libqt5dbus5 libqt5gui5 libqt5network5 libqt5opengl5 libqt5svg5
  libqt5widgets5 libqwt-qt5-6 librest-0.7-0 librsvg2-2 librsvg2-common libsensors-config libsensors5 libsm6 libsoup-gnome2.4-1 libsz2 libthai-data
  libthai0 libtiff5 libvulkan1 libwacom-bin libwacom-common libwacom2 libwayland-client0 libwayland-cursor0 libwayland-egl1 libwayland-server0
  libwebp6 libx11-xcb1 libxcb-dri2-0 libxcb-dri3-0 libxcb-glx0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-present0 libxcb-randr0
  libxcb-render-util0 libxcb-render0 libxcb-shape0 libxcb-shm0 libxcb-sync1 libxcb-util1 libxcb-xfixes0 libxcb-xinerama0 libxcb-xinput0 libxcb-xkb1
  libxcomposite1 libxcursor1 libxdamage1 libxfixes3 libxi6 libxinerama1 libxkbcommon-x11-0 libxkbcommon0 libxrandr2 libxrender1 libxshmfence1
  libxtst6 libxxf86vm1 libyaml-cpp0.6 mesa-vulkan-drivers qt5-gtk-platformtheme qttranslations5-l10n ubuntu-mono x11-common
Suggested packages:
  colord cups-common gvfs liblcms2-utils qt5-image-formats-plugins qtwayland5 librsvg2-bin lm-sensors
The following NEW packages will be installed:
  adwaita-icon-theme at-spi2-core ecal fontconfig fontconfig-config fonts-dejavu-core gtk-update-icon-cache hicolor-icon-theme humanity-icon-theme
  libaec0 libatk-bridge2.0-0 libatk1.0-0 libatk1.0-data libatspi2.0-0 libavahi-client3 libavahi-common-data libavahi-common3 libcairo-gobject2
  libcairo2 libcolord2 libcups2 libdatrie1 libdouble-conversion3 libdrm-amdgpu1 libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libegl-mesa0 libegl1
  libepoxy0 libevdev2 libfontconfig1 libgbm1 libgdk-pixbuf2.0-0 libgdk-pixbuf2.0-bin libgdk-pixbuf2.0-common libgfortran5 libgl1 libgl1-mesa-dri
  libglapi-mesa libglvnd0 libglx-mesa0 libglx0 libgraphite2-3 libgtk-3-0 libgtk-3-bin libgtk-3-common libharfbuzz0b libhdf5-103 libice6
  libinput-bin libinput10 libjbig0 libjpeg-turbo8 libjpeg8 liblcms2-2 libllvm12 libmtdev1 libpango-1.0-0 libpangocairo-1.0-0 libpangoft2-1.0-0
  libpciaccess0 libpcre2-16-0 libpixman-1-0 libprotobuf17 libqt5core5a libqt5dbus5 libqt5gui5 libqt5network5 libqt5opengl5 libqt5svg5
  libqt5widgets5 libqwt-qt5-6 librest-0.7-0 librsvg2-2 librsvg2-common libsensors-config libsensors5 libsm6 libsoup-gnome2.4-1 libsz2 libthai-data
  libthai0 libtiff5 libvulkan1 libwacom-bin libwacom-common libwacom2 libwayland-client0 libwayland-cursor0 libwayland-egl1 libwayland-server0
  libwebp6 libx11-xcb1 libxcb-dri2-0 libxcb-dri3-0 libxcb-glx0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-present0 libxcb-randr0
  libxcb-render-util0 libxcb-render0 libxcb-shape0 libxcb-shm0 libxcb-sync1 libxcb-util1 libxcb-xfixes0 libxcb-xinerama0 libxcb-xinput0 libxcb-xkb1
  libxcomposite1 libxcursor1 libxdamage1 libxfixes3 libxi6 libxinerama1 libxkbcommon-x11-0 libxkbcommon0 libxrandr2 libxrender1 libxshmfence1
  libxtst6 libxxf86vm1 libyaml-cpp0.6 mesa-vulkan-drivers qt5-gtk-platformtheme qttranslations5-l10n ubuntu-mono x11-common
0 upgraded, 131 newly installed, 0 to remove and 26 not upgraded.
Need to get 71.9 MB of archives.
After this operation, 688 MB of additional disk space will be used.
Do you want to continue? [Y/n] 

[FlorianReimold]

We currently don't provide a non-GUI debian installer as binary. This is kind of on our roadmap (especially for the PPA), but it's not realized, yet.

You can however easily compile and pack a pure headless version yourself, by setting the following CMake Option to OFF:

ecal/CMakeLists.txt

Line 71 in 3669e5e

option(HAS_QT5 "Platform supports Qt 5 library" ON)

Here is a basic introduction on how to compile eCAL:
https://eclipse-ecal.github.io/ecal/development/building_ecal_from_source.html#fa-ubuntu-building-ecal-on-ubuntu

If you want to closely re-create our official binaries, here are the CMake Options that we are using:

ecal/.github/workflows/build-ubuntu-22.yml

Lines 59 to 95 in 3669e5e

	cmake $GITHUB_WORKSPACE -G "Ninja" \
	-DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
	-DHAS_HDF5=ON \
	-DHAS_QT5=ON \
	-DHAS_CURL=ON \
	-DHAS_CAPNPROTO=ON \
	-DHAS_FTXUI=ON \
	-DBUILD_DOCS=ON \
	-DBUILD_APPS=ON \
	-DBUILD_SAMPLES=ON \
	-DBUILD_TIME=ON \
	-DBUILD_PY_BINDING=ON \
	-DBUILD_STANDALONE_PY_WHEEL=ON \
	-DBUILD_CSHARP_BINDING=OFF \
	-DBUILD_ECAL_TESTS=ON \
	-DECAL_LAYER_ICEORYX=OFF \
	-DECAL_INCLUDE_PY_SAMPLES=OFF \
	-DECAL_INSTALL_SAMPLE_SOURCES=ON \
	-DECAL_JOIN_MULTICAST_TWICE=OFF \
	-DECAL_NPCAP_SUPPORT=OFF \
	-DECAL_THIRDPARTY_BUILD_CMAKE_FUNCTIONS=ON \
	-DECAL_THIRDPARTY_BUILD_PROTOBUF=OFF \
	-DECAL_THIRDPARTY_BUILD_SPDLOG=ON \
	-DECAL_THIRDPARTY_BUILD_TINYXML2=ON \
	-DECAL_THIRDPARTY_BUILD_FINEFTP=ON \
	-DECAL_THIRDPARTY_BUILD_CURL=OFF \
	-DECAL_THIRDPARTY_BUILD_GTEST=ON \
	-DECAL_THIRDPARTY_BUILD_HDF5=OFF \
	-DECAL_THIRDPARTY_BUILD_RECYCLE=ON \
	-DECAL_THIRDPARTY_BUILD_TCP_PUBSUB=ON \
	-DECAL_THIRDPARTY_BUILD_QWT=OFF \
	-DECAL_THIRDPARTY_BUILD_YAML-CPP=OFF \
	-DCMAKE_BUILD_TYPE=Release \
	-DCMAKE_INSTALL_SYSCONFDIR=/etc \
	-DCMAKE_INSTALL_PREFIX=/usr \
	-DCMAKE_INSTALL_LOCALSTATEDIR=/var \
	-DCMAKE_INSTALL_LIBDIR=lib/x86_64-linux-gnu

Remember to turn off HAS_QT5 here.

After compiling, you then call cpack from your build directory to get a .deb installer.

[chengguizi]

Thanks so much for the replies! Look forward to the official release as well.