WIP: Add an unstable module for Rust Cargo supportnirbheek/cargo-module

Currently only supports building staticlib libraries and binaries with
Cargo. All configuration must be in the Cargo.toml file.

You should use cargo 0.23 because it fixes a bug in emitting dep-info

FIXMEs:
* Cross compilation is broken. We do not pass the `--target TRIPLE` flag
  to cargo, so it always builds targetting the build machine.
* tests and benches are currently not supported, but can be added
* cdylibs are not supported because it is not clear if anyone uses them
  and if they even work properly in Rust
* `ninja dist` does not yet run `cargo vendor` to add crate sources
* `cargo clean` is not called on `ninja clean`
* We cannot handle adding system libraries that are needed by the
  staticlib while linking because it's outputted at build time
  by `cargo build`. You must handle that yourself.
* We do not pass on RUSTFLAGS from the env during configure to cargo
  build.

1 files changed, 2 insertions, 0 deletions

diff --git a/mesonbuild/mesonlib.py b/mesonbuild/mesonlib.py
index 9ad066821..cb8ad8734 100644
--- a/mesonbuild/mesonlib.py
+++ b/mesonbuild/mesonlib.py
@@ -661,6 +661,8 @@ def expand_arguments(args):
             return None
     return expended_args
 
+Popen_safe_errors = (FileNotFoundError, PermissionError, subprocess.CalledProcessError)
+
 def Popen_safe(args, write=None, stderr=subprocess.PIPE, **kwargs):
     if sys.version_info < (3, 6) or not sys.stdout.encoding:
         return Popen_safe_legacy(args, write=write, stderr=stderr, **kwargs)