Enhance Rust support

- Adds a `crate_type` kwarg to library targets, allowing the different
  types of Rust [linkage][1].
- Shared libraries use the `dylib` crate type by default, but can also
  be `cdylib`
- Static libraries use the `rlib` crate type by default, but can also
  be `staticlib`
- If any Rust target has shared library dependencies, add the
  appropriate linker arguments, including rpath for the sysroot of the
  Rust compiler

[1]: https://doc.rust-lang.org/reference/linkage.html

1 files changed, 8 insertions, 0 deletions

diff --git a/mesonbuild/compilers.py b/mesonbuild/compilers.py
index c9cfb46..6e7283c 100644
--- a/mesonbuild/compilers.py
+++ b/mesonbuild/compilers.py
@@ -1809,6 +1809,14 @@ class RustCompiler(Compiler):
     def get_buildtype_args(self, buildtype):
         return rust_buildtype_args[buildtype]
 
+    def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
+        return build_unix_rpath_args(build_dir, rpath_paths, install_rpath)
+
+    def get_sysroot(self):
+        cmd = self.exelist + ['--print', 'sysroot']
+        p, stdo, stde = Popen_safe(cmd)
+        return stdo.split('\n')[0]
+
 class SwiftCompiler(Compiler):
     def __init__(self, exelist, version):
         self.language = 'swift'