lib/std/Build/Cache.zig | 117 +++++++++++++++++++++++---------
 lib/std/Build/Step.zig  |  23 +++++--
 lib/std/posix.zig       |   4 ++
 src/Compilation.zig     |  31 ++++++---
 src/Zcu/PerThread.zig   |  12 ++--
 src/link.zig            |   2 +-
 6 files changed, 140 insertions(+), 49 deletions(-)