Cargo.toml

[package]
authors = ["The Rust Project Developers"]
name = "rustc"
version = "0.0.0"
edition = "2018"

[lib]
name = "rustc"
path = "lib.rs"
crate-type = ["dylib"]

[dependencies]
arena = { path = "../libarena" }
bitflags = "1.0"
fmt_macros = { path = "../libfmt_macros" }
graphviz = { path = "../libgraphviz" }
jobserver = "0.1"
lazy_static = "1.0.0"
num_cpus = "1.0"
scoped-tls = "1.0"
log = { version = "0.4", features = ["release_max_level_info", "std"] }
polonius-engine = "0.7.0"
rustc-rayon = "0.2.0"
rustc-rayon-core = "0.2.0"
rustc_apfloat = { path = "../librustc_apfloat" }
rustc_target = { path = "../librustc_target" }
rustc_macros = { path = "../librustc_macros" }
rustc_data_structures = { path = "../librustc_data_structures" }
errors = { path = "../librustc_errors", package = "rustc_errors" }
serialize = { path = "../libserialize" }
syntax = { path = "../libsyntax" }
syntax_pos = { path = "../libsyntax_pos" }
backtrace = "0.3.3"
parking_lot = "0.7"
byteorder = { version = "1.1", features = ["i128"]}
chalk-engine = { version = "0.9.0", default-features=false }
rustc_fs_util = { path = "../librustc_fs_util" }
smallvec = { version = "0.6.7", features = ["union", "may_dangle"] }
measureme = "0.3"

# Note that these dependencies are a lie, they're just here to get linkage to
# work.
#
# We're creating a bunch of dylibs for the compiler but we're also compiling a
# bunch of crates.io crates. Everything in the compiler is compiled as an
# rlib/dylib pair but all crates.io crates tend to just be rlibs. This means
# we've got a problem for dependency graphs that look like:
#
#           foo - rustc_codegen_llvm
#         /                  \
#   rustc                     ---- rustc_driver
#         \                     /
#           foo - rustc_metadata
#
# Here the crate `foo` is linked into the `rustc_codegen_llvm` and the
# `rustc_metadata` dylibs, meaning we've got duplicate copies! When we then
# go to link `rustc_driver` the compiler notices this and gives us a compiler
# error.
#
# To work around this problem we just add these crates.io dependencies to the
# `rustc` crate which is a shared dependency above. That way the crate `foo`
# shows up in the dylib for the `rustc` crate, deduplicating it and allowing
# crates like `rustc_codegen_llvm` to use `foo` *through* the `rustc` crate.
#
# tl;dr; this is not needed to get `rustc` to compile, but if you remove it then
#        later crate stop compiling. If you can remove this and everything
#        compiles, then please feel free to do so!
flate2 = "1.0"
tempfile = "3.0"