lib/std/Build.zig               | 95 ++++++++++++++++++++++++++------
 lib/std/Build/Configuration.zig | 22 ++++++++
 lib/std/Build/Serialize.zig     | 14 ++++-
 lib/std/Build/Step.zig          |  6 ++
 4 files changed, 117 insertions(+), 20 deletions(-)