gcc O3 lto

 * Final size of build directory: 22448 KiB (21.9 MiB)
 * Final size of installed tree:   2996 KiB ( 2.9 MiB)

gcc O3

 * Final size of build directory: 17300 KiB (16.8 MiB)
 * Final size of installed tree:   2960 KiB ( 2.8 MiB)

clang O3 lto

 * Final size of build directory: 16788 KiB (16.3 MiB)
 * Final size of installed tree:   2712 KiB ( 2.6 MiB)

clang O3

 * Final size of build directory: 15828 KiB (15.4 MiB)
 * Final size of installed tree:   2556 KiB ( 2.4 MiB)