I'm trying to compile this, and there are several packages that are missing.
TL;DR:
-- Checking for module 'gtk+-3.0>=3.10' -- CMake Error at /usr/share/cmake-3.5/Modules/FindPkgConfig.cmake:367 (message): A required package was not found Call Stack (most recent call first): /usr/share/cmake-3.5/Modules/FindPkgConfig.cmake:532 (_pkg_check_modules_internal) CMakeLists.txt:71 (pkg_check_modules) -- Configuring incomplete, errors occurred! EDIT: Solved.
PS: I have succesfully build this piece of software in the past with desperate google search and randomly installing packages, but I can't remember how, so I'm documenting it now.
Previous error messages are quite helpful though some are rather cryptic and requres trial and errors.
41 Answer
Set of packages needed to satisfy cmake dependency:
sudo apt install cmake rpm valac libwnck-3-dev libxfce4panel-2.0-dev libxfconf-0-dev libpeas-dev libgtk2.0-dev libxfce4util-dev libdbusmenu-glib-dev bamfdaemon unity-gtk-module-common unity-gtk2-module unity-gtk3-module appmenu-qt
The only packages not fulfilled are libmatepanelapplet-4.0, vala-panel, and budgie-1.0, since they are not required for XFCE DE. Jayatana support also disabled since it spewed this error:
[ 2%] Building Java objects for jayatana-java.jar [ 4%] Generating CMakeFiles/ [ 7%] Creating Java archive jayatana.jar [ 7%] Built target jayatana-java Scanning dependencies of target java-headers [ 9%] Building C header files from classes... [ 9%] Built target java-headers Scanning dependencies of target jayatana [ 12%] Building C object jayatana/lib/CMakeFiles/ In file included from /PATH/TO/FILE/vala-panel-appmenu/jayatana/lib/com_jarego_jayatana_basic_GlobalMenu.c:29:0: /PATH/TO/FILE/vala-panel-appmenu/build/jayatana/lib/../java/com_jarego_jayatana_basic_GlobalMenu.h:2:17: fatal error: jni.h: There is no such file or directory compilation terminated. jayatana/lib/CMakeFiles/ recipe for target 'jayatana/lib/CMakeFiles/ failed make[2]: *** [jayatana/lib/CMakeFiles/ Error 1 CMakeFiles/Makefile2:382: recipe for target 'jayatana/lib/CMakeFiles/ failed make[1]: *** [jayatana/lib/CMakeFiles/ Error 2 Makefile:160: recipe for target 'all' failed make: *** [all] Error 2 Flags used are:
vala-panel-appmenu/build$ cmake -DENABLE_XFCE=ON -DENABLE_JAYATANA=OFF -DMAKE_BOLD_APPNAME=ON -DCMAKE_INSTALL_PREFIX=/usr .. 
