Arch Linux

Description:
Build flags are not used as cmake generate is called in prepare() where they are not set rather than build() where they are.

Additional info:
* freeorion 0.4.10.2-4

Steps to reproduce:
namcap freeorion-0.4.10.2-4-x86_64.pkg.tar.zst
freeorion W: ELF file ('usr/bin/freeorion') lacks FULL RELRO, check LDFLAGS.
freeorion W: ELF file ('usr/bin/freeorionca') lacks FULL RELRO, check LDFLAGS.
freeorion W: ELF file ('usr/bin/freeoriond') lacks FULL RELRO, check LDFLAGS.
freeorion W: ELF file ('usr/lib/freeorion/libGiGi.so') lacks FULL RELRO, check LDFLAGS.
freeorion W: ELF file ('usr/lib/freeorion/libfreeorioncommon.so') lacks FULL RELRO, check LDFLAGS.
freeorion W: ELF file ('usr/lib/freeorion/libfreeorionparse.so') lacks FULL RELRO, check LDFLAGS.
freeorion W: Referenced library 'CombatRatingsAI' is an uninstalled dependency
freeorion W: Referenced library 'InvasionAI' is an uninstalled dependency
freeorion W: Referenced library 'fleet_orders' is an uninstalled dependency
freeorion W: Referenced library 'pytest' is an uninstalled dependency
freeorion W: Referenced library 'common' is an uninstalled dependency
freeorion W: Referenced library 'freeorion_tools' is an uninstalled dependency
freeorion W: Referenced library 'starsystems' is an uninstalled dependency
freeorion W: Referenced library 'ShipDesignAI' is an uninstalled dependency
freeorion W: Referenced library 'ExplorationAI' is an uninstalled dependency
freeorion W: Referenced library 'planets' is an uninstalled dependency
freeorion W: Referenced library 'util' is an uninstalled dependency
freeorion W: Referenced library 'pylab' is an uninstalled dependency
freeorion W: Referenced library 'empires' is an uninstalled dependency
freeorion W: Referenced library 'character' is an uninstalled dependency
freeorion W: Referenced library 'MoveUtilsAI' is an uninstalled dependency
freeorion W: Referenced library 'PlanetUtilsAI' is an uninstalled dependency
freeorion W: Referenced library 'AIstate' is an uninstalled dependency
freeorion W: Referenced library 'statprof' is an uninstalled dependency
freeorion W: Referenced library 'stub_generator' is an uninstalled dependency
freeorion W: Referenced library 'ProductionAI' is an uninstalled dependency
freeorion W: Referenced library 'galaxy' is an uninstalled dependency
freeorion W: Referenced library 'specials' is an uninstalled dependency
freeorion W: Referenced library 'MilitaryAI' is an uninstalled dependency
freeorion W: Referenced library 'AIFleetMission' is an uninstalled dependency
freeorion W: Referenced library 'aistate_interface' is an uninstalled dependency
freeorion W: Referenced library 'PriorityAI' is an uninstalled dependency
freeorion W: Referenced library 'universe_tables' is an uninstalled dependency
freeorion W: Referenced library 'FleetUtilsAI' is an uninstalled dependency
freeorion W: Referenced library 'ResearchAI' is an uninstalled dependency
freeorion W: Referenced library 'starnames' is an uninstalled dependency
freeorion W: Referenced library 'universe_statistics' is an uninstalled dependency
freeorion W: Referenced library 'TechsListsAI' is an uninstalled dependency
freeorion W: Referenced library 'DiplomaticCorp' is an uninstalled dependency
freeorion W: Referenced library 'savegame_codec' is an uninstalled dependency
freeorion W: Referenced library 'pathfinding' is an uninstalled dependency
freeorion W: Referenced library 'EspionageAI' is an uninstalled dependency
freeorion W: Referenced library 'turn_state' is an uninstalled dependency
freeorion W: Referenced library 'ColonisationAI' is an uninstalled dependency
freeorion W: Referenced library 'natives' is an uninstalled dependency
freeorion W: Referenced library 'freeOrionAIInterface' is an uninstalled dependency
freeorion W: Referenced library 'EnumsAI' is an uninstalled dependency
freeorion W: Referenced library 'monsters' is an uninstalled dependency
freeorion W: Referenced library 'ResourcesAI' is an uninstalled dependency
freeorion W: Referenced library 'AIDependencies' is an uninstalled dependency
freeorion W: Referenced library 'freeorion' is an uninstalled dependency
freeorion W: Referenced library 'options' is an uninstalled dependency
freeorion W: Referenced library 'target' is an uninstalled dependency
freeorion W: Referenced library 'freeorion_logger' is an uninstalled dependency
freeorion W: Referenced library 'fields' is an uninstalled dependency
freeorion W: Referenced library 'names' is an uninstalled dependency
freeorion W: Referenced library 'teams' is an uninstalled dependency
freeorion W: Referenced library 'usr/lib/freeorion/libfreeorioncommon.so' is an uninstalled dependency
freeorion W: Referenced library 'usr/lib/freeorion/libfreeorionparse.so' is an uninstalled dependency
freeorion W: Referenced library 'usr/lib/freeorion/libGiGi.so' is an uninstalled dependency
freeorion W: Referenced library 'libGLEW.so.2.2' is an uninstalled dependency
freeorion W: Unused shared library '/usr/lib/libogg.so.0' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libvorbisenc.so.2' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libboost_iostreams.so.1.80.0' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libboost_locale.so.1.80.0' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libboost_log_setup.so.1.80.0' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libboost_chrono.so.1.80.0' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libboost_serialization.so.1.80.0' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libz.so.1' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libboost_atomic.so.1.80.0' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libboost_regex.so.1.80.0' by file ('usr/bin/freeorion')
freeorion W: Unused shared library '/usr/lib/libboost_iostreams.so.1.80.0' by file ('usr/bin/freeorionca')
freeorion W: Unused shared library '/usr/lib/libboost_locale.so.1.80.0' by file ('usr/bin/freeorionca')
freeorion W: Unused shared library '/usr/lib/libboost_log_setup.so.1.80.0' by file ('usr/bin/freeorionca')
freeorion W: Unused shared library '/usr/lib/libboost_atomic.so.1.80.0' by file ('usr/bin/freeorionca')
freeorion W: Unused shared library '/usr/lib/libboost_chrono.so.1.80.0' by file ('usr/bin/freeorionca')
freeorion W: Unused shared library '/usr/lib/libboost_regex.so.1.80.0' by file ('usr/bin/freeorionca')
freeorion W: Unused shared library '/usr/lib/libboost_serialization.so.1.80.0' by file ('usr/bin/freeorionca')
freeorion W: Unused shared library '/usr/lib/libz.so.1' by file ('usr/bin/freeorionca')
freeorion W: Unused shared library '/usr/lib/libm.so.6' by file ('usr/bin/freeorionca')
freeorion W: Unused shared library '/usr/lib/libboost_locale.so.1.80.0' by file ('usr/bin/freeoriond')
freeorion W: Unused shared library '/usr/lib/libboost_log_setup.so.1.80.0' by file ('usr/bin/freeoriond')
freeorion W: Unused shared library '/usr/lib/libboost_atomic.so.1.80.0' by file ('usr/bin/freeoriond')
freeorion W: Unused shared library '/usr/lib/libboost_chrono.so.1.80.0' by file ('usr/bin/freeoriond')
freeorion W: Unused shared library '/usr/lib/libboost_regex.so.1.80.0' by file ('usr/bin/freeoriond')
freeorion W: Unused shared library '/usr/lib/libboost_thread.so.1.80.0' by file ('usr/bin/freeoriond')
freeorion W: Unused shared library '/usr/lib/libz.so.1' by file ('usr/bin/freeoriond')
freeorion W: Unused shared library '/usr/lib/libboost_regex.so.1.80.0' by file ('usr/lib/freeorion/libGiGi.so')
freeorion W: Unused shared library '/usr/lib/libboost_atomic.so.1.80.0' by file ('usr/lib/freeorion/libGiGi.so')
freeorion W: Unused shared library '/usr/lib/libz.so.1' by file ('usr/lib/freeorion/libGiGi.so')
freeorion W: Unused shared library '/usr/lib/libm.so.6' by file ('usr/lib/freeorion/libfreeorionparse.so')
freeorion E: Dependency python2 detected and not included (programs ['python2'] needed in scripts ['usr/share/freeorion/default/python/common/charting/charts.py'])
freeorion W: Dependency included and not needed ('glew')