Steps to build OGS-CLI and OGS-GUI on Ubuntu 20.04

Usability
3

string(REPLACE “.windows.1” “” GIT_VERSION_STRING {GIT_VERSION_STRING}) if({GIT_VERSION_STRING} VERSION_LESS {ogs.minimum_version.git}) message(FATAL_ERROR "Git version {ogs.minimum_version.git} is required.
Found version ${GIT_VERSION_STRING}."
)
endif()