src/rustc/std_shim/Cargo.toml

   1 # This is a shim Cargo.toml which serves as a proxy for building the standard
   2 # library. The reason for this is a little subtle, as one might reasonably
   3 # expect that we just `cargo build` the standard library itself.
   4 #
   5 # One of the output artifacts for the standard library is a dynamic library, and
   6 # on platforms like OSX the name of the output artifact is actually encoded into
   7 # the library itself (similar to a soname on Linux). When the library is linked
   8 # against, this encoded name is what's literally looked for at runtime when the
   9 # dynamic loader is probing for libraries.
  10 #
  11 # Cargo, however, by default will not mangle the output filename of the
  12 # top-level target. If we were to run `cargo build` on libstd itself, we would
  13 # generate a file `libstd.so`. When installing, however, this file is called
  14 # something like `libstd-abcdef0123.so`. On OSX at least this causes a failure
  15 # at runtime because the encoded "soname" is `libstd.so`, not what the file is
  16 # actually called.
  17 #
  18 # By using this shim library to build the standard library by proxy we sidestep
  19 # this problem. The standard library is built with mangled hex already in its
  20 # name so there's nothing extra we need to do.
  21
  22 [package]
  23 name = "std_shim"
  24 version = "0.1.0"
  25 authors = ["The Rust Project Developers"]
  26
  27 [lib]
  28 name = "std_shim"
  29 path = "lib.rs"
  30 doc = false
  31
  32 [dependencies]
  33 std = { path = "../../libstd" }
  34 core = { path = "../../libcore" }
  35
  36 # Reexport features from std
  37 [features]
  38 backtrace = ["std/backtrace"]
  39 debug-jemalloc = ["std/debug-jemalloc"]
  40 jemalloc = ["std/jemalloc"]
  41 force_alloc_system = ["std/force_alloc_system"]
  42 panic-unwind = ["std/panic-unwind"]