~/Projects/yocto-superproject/poky MACHINE=qemux86-64 bitbake-getvar -r systemd BASE_LIB
#
# $BASE_LIB [8 operations]
#   override[tune-x86]:set /home/pneves/Projects/yocto-superproject/poky/meta/conf/machine/include/x86/arch-x86.inc:40
#     "lib"
#   override[tune-x86-64]:set /home/pneves/Projects/yocto-superproject/poky/meta/conf/machine/include/x86/arch-x86.inc:46
#     "lib64"
#   override[tune-x86-64-x32]:set /home/pneves/Projects/yocto-superproject/poky/meta/conf/machine/include/x86/arch-x86.inc:52
#     "libx32"
#   override[tune-i586]:set /home/pneves/Projects/yocto-superproject/poky/meta/conf/machine/include/x86/tune-i586.inc:12
#     "lib"
#   override[tune-i686]:set /home/pneves/Projects/yocto-superproject/poky/meta/conf/machine/include/x86/tune-i686.inc:25
#     "lib"
#   override[tune-core2-32]:set /home/pneves/Projects/yocto-superproject/poky/meta/conf/machine/include/x86/tune-core2.inc:21
#     "lib"
#   override[tune-core2-64]:set /home/pneves/Projects/yocto-superproject/poky/meta/conf/machine/include/x86/tune-core2.inc:28
#     "lib64"
#   override[tune-core2-64-x32]:set /home/pneves/Projects/yocto-superproject/poky/meta/conf/machine/include/x86/tune-core2.inc:35
#     "libx32"
# pre-expansion value:
#   "None"