WIP: Preset CMAKE_INSTALL_PREFIX from the toolchain
This allow to call "make install" and have the binaries installed in InstallArea/<platform>
, but I'm not too convinced this setting belongs to the toolchain, it looks more like a setting that should go in https://gitlab.cern.ch/lhcb-core/LbDevTools/-/blob/master/LbDevTools/data/cmake/LegacyGaudiCMakeSupport.cmake
@bcouturi, what do you think?
Edited by Marco Clemencic