Add support for cargo build of LMP

This change adds an option to skip generating Bluetooth packets using
bluetooth_packetgen if these were already built in advance.
It also adds crate definition for liblmp, similar to bt_packets.

Bug: 238726856
Tag: #floss
Test: cargo build
Change-Id: Ib099b56c0eb39c37cb459132ddf2a813cb63ebf6

1 files changed, 9 insertions, 0 deletions

diff --git a/build.py b/build.py
index b121cad667..801c14759c 100755
--- a/build.py
+++ b/build.py
@@ -65,6 +65,7 @@ VALID_TARGETS = [
     'docs',  # Build Rust docs
     'main',  # Build the main C++ codebase
     'prepare',  # Prepare the output directory (gn gen + rust setup)
+    'rootcanal',  # Build Rust targets for RootCanal
     'rust',  # Build only the rust components + copy artifacts to output dir
     'test',  # Run the unit tests
     'tools',  # Build the host tools (i.e. packetgen)
@@ -433,6 +434,11 @@ class HostBuild():
         """
         self._rust_build()
 
+    def _target_rootcanal(self):
+        """ Build rust artifacts for RootCanal in an already prepared environment.
+        """
+        self.run_command('rust', ['cargo', 'build'], cwd=os.path.join(self.platform_dir, 'bt/tools/rootcanal'), env=self.env)
+
     def _target_main(self):
         """ Build the main GN artifacts in an already prepared environment.
         """
@@ -447,6 +453,7 @@ class HostBuild():
             rust_test_cmd = rust_test_cmd + [self.args.test_name]
 
         self.run_command('test', rust_test_cmd, cwd=os.path.join(self.platform_dir, 'bt'), env=self.env)
+        self.run_command('test', rust_test_cmd, cwd=os.path.join(self.platform_dir, 'bt/tools/rootcanal'), env=self.env)
 
         # Host tests second based on host test list
         for t in HOST_TESTS:
@@ -542,6 +549,8 @@ class HostBuild():
             self._target_prepare()
         elif self.target == 'tools':
             self._target_tools()
+        elif self.target == 'rootcanal':
+            self._target_rootcanal()
         elif self.target == 'rust':
             self._target_rust()
         elif self.target == 'docs':