add crate-name to Rust target args

This is required for downstream Rust dependencies to properly import
libraries using `extern crate`.

mesonbuild/backend/ninjabackend.py

@@ -1173,6 +1173,7 @@ def generate_rust_target(self, target, outfile):
         else:
             raise InvalidArguments('Unknown target type for rustc.')
         args.append(cratetype)
+        args += ['--crate-name', target.name]
         args += rustc.get_buildtype_args(self.get_option_for_target('buildtype', target))
         depfile = os.path.join(target.subdir, target.name + '.d')
         args += ['--emit', 'dep-info={}'.format(depfile), '--emit', 'link']

test cases/rust/6 named staticlib/installed_files.txt

@@ -0,0 +1,2 @@
+usr/bin/prog?exe
+usr/lib/libnamed_stuff.rlib

test cases/rust/6 named staticlib/meson.build

@@ -0,0 +1,5 @@
+project('rust static library', 'rust')
+
+l = static_library('named_stuff', 'stuff.rs', install : true)
+e = executable('prog', 'prog.rs', link_with : l, install : true)
+test('linktest', e)

test cases/rust/6 named staticlib/prog.rs

@@ -0,0 +1,3 @@
+extern crate named_stuff;
+
+fn main() { println!("printing: {}", named_stuff::explore()); }

test cases/rust/6 named staticlib/stuff.rs

@@ -0,0 +1 @@
+pub fn explore() -> &'static str { "librarystring" }