The seadrive-gui is not available in any of the slackbuilds (at lease, not that I have found), but can be compiled quite easily. Follow the instructions found at https://github.com/haiwen/seadrive-gui exactly! (however I didn’t need to compile libsearpc as I had already installed it with seadrive-client).
However, there is an NB:
Before compiling, go into the directory when the source code is and edit the CMakeLists.txt file.
insert the following line: ADD_DEFINITIONS(-DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_26)
It should now look like this:
CMAKE_MINIMUM_REQUIRED(VERSION 2.8.9)
PROJECT(seadrive-gui)
SET(SEADRIVE_GUI_VERSION_MAJOR 2)
SET(SEADRIVE_GUI_VERSION_MINOR 0)
SET(SEADRIVE_GUI_VERSION_PATCH 6)
SET(PROJECT_VERSION "${SEADRIVE_GUI_VERSION_MAJOR}.${SEADRIVE_GUI_VERSION_MINOR>
ADD_DEFINITIONS(-DSEADRIVE_GUI_VERSION=${PROJECT_VERSION})
ADD_DEFINITIONS(-DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_26)
INCLUDE(FindPkgConfig)
…etc
It should now compile. I found this solution here: AUR (en) - seadrive-gui