author Mike Hommey <>
Thu, 12 Jul 2018 10:23:12 +0900
changeset 426303 7bf77a18b13eb52184c84c9e565634e1da141b4c
parent 423243 0088ae712bf5fe1a4ae4e0c7b816f1b9f68b20a4
child 438676 537457dc2f47fa9436c5abb6b27977ae9727e059
permissions -rw-r--r--
Bug 1474871 - Link dump_syms against rustc-demangle. r=ted The new version of breakpad imported in bug 1309172 doesn't demangle rust symbols at all, contrary to before, where it tried to C++ demangle them, which worked for many, although far from all. It however has rust-demangle support as long as it's linked against a copy of the rust-demangle-capi crate from This imports the code from the rust-demangle-capi crate but because of some build system complications it's not taken as-is: - it uses rusty-cheddar, which is deprecated, to generate a C header. - rusty-cheddar depends on syntex_syntax, which now fails to build. - rust-demangle-capi has crate-type staticlib, which can't be used as a dependency in a Cargo.toml. For that reason, we can't create a fake crate that depends on it to have it vendored. Overall, it's only a few lines of rust, and the C header can be written manually, so this is what we do here. The created crate is named in a way specific to dump_syms. The build system doesn't know how to figure out what system libraries are required to link rust static libraries, although the rust compiler has /some/ support to get the information, so we handle that manually.


# These are the "root" crates, which we build and test as top-level targets.
# Their transitive dependencies and dev-dependencies are included automatically
# and do not need to be listed here. Their external dependencies are vendored
# into `third_party/rust` by `mach vendor rust`.
members = [
  "js/src/frontend/binsource", # Code generator.

# Excluded crates may be built as dependencies, but won't be considered members
# of the workspace and their dev-dependencies won't be included.
exclude = [
  # Exclude third-party code vendored into mozilla-central.

  # Excluded because this is a standalone tool for developers and not intended
  # to be built as part of mozilla-central and is not shipped to users.

  # Excluded because these crates have their own Cargo workspaces so they can't
  # be included in the top-level one.

  # Excluded because they are used only as dependencies, not top-level targets,
  # so we don't need to vendor their dev-dependencies.

# Explicitly specify what our profiles use.  The opt-level setting here is
# a total fiction; see the setup of MOZ_RUST_DEFAULT_FLAGS for what the
# opt-level setting will be as a result of various other configure flags.
opt-level = 1
rpath = false
lto = false
debug-assertions = true
panic = "abort"

opt-level = 2
rpath = false
debug-assertions = false
panic = "abort"
codegen-units = 1

libudev-sys = { path = "dom/webauthn/libudev-sys" }
serde_derive = { git = "", branch = "deserialize_from_enums8" }