Adding debugging printout on compiler launch

external-crates/move/solana/move-mv-llvm-compiler/docs/Development.md

@@ -202,6 +202,43 @@ To debug in VS Code add this config:
     "stopOnEntry": false
  }
 
+ - To print out the compilation command line spawned by tests set env: RUST_LOG=launch_compiler.
+   For example:
+   ```
+  > RUST_LOG=launch_compiler cargo test --manifest-path external-crates/move/Cargo.toml -p move-mv-llvm-compiler --test stdlib-with-p-option-tests; echo EOT
+    Compiling move-mv-llvm-compiler v0.1.0 (/home/sol/work/git/sui-solana-032024/external-crates/move/solana/move-mv-llvm-compiler)
+    Finished test [unoptimized + debuginfo] target(s) in 1.22s
+     Running tests/stdlib-with-p-option-tests.rs (external-crates/move/target/debug/deps/stdlib_with_p_option_tests-ffb0765866d3fdd7)
+
+    running 1 test
+    Finished dev [unoptimized + debuginfo] target(s) in 0.29s
+    Finished dev [unoptimized + debuginfo] target(s) in 0.18s
+    [2024-05-11T01:06:54Z DEBUG stdlib_with_p_option_tests::test_common] Command {
+        program: "/home/sol/work/git/sui-solana-032024/external-crates/move/target/debug/move-mv-llvm-compiler",
+        args: [
+            "/home/sol/work/git/sui-solana-032024/external-crates/move/target/debug/move-mv-llvm-compiler",
+            "-c",
+            "/home/sol/work/git/sui-solana-032024/external-crates/move/solana/move-mv-llvm-compiler/tests/stdlib-with-p-option-tests/hash_tests.move",
+            "--extension",
+            "ll.actual",
+            "-p",
+            "/home/sol/work/git/sui-solana-032024/external-crates/move/crates/move-stdlib",
+            "--test",
+            "--dev",
+            "-S",
+            "-o",
+            "/home/sol/work/git/sui-solana-032024/external-crates/move/solana/move-mv-llvm-compiler/tests/stdlib-with-p-option-tests/hash_tests-build",
+        ],
+        create_pidfd: false,
+    }
+    test run_test::hash_tests.move ... ok
+
+    test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.60s
+
+    EOT
+
+   ```
+
 ### Protip
 
 ----

external-crates/move/solana/move-mv-llvm-compiler/src/package.rs

@@ -143,9 +143,13 @@ pub fn resolve_dependency(
         lock_file: None, // Option<PathBuf>
         fetch_deps_only: true,
         skip_fetch_latest_git_deps: true,
-        default_flavor: None, // todo sui
-        default_edition: None, // todo sui
-        deps_as_root: false, // todo sui
+        // Note: Sui introduced compiler_version and edition/flavor of tool chain,
+        // they may be set as
+        // "move build --default-move-edition --default-move-flavor".
+        // Since Solana uses own compiler and tools, ignore them.
+        default_flavor: None, // in Sui can be Some(Flavor::GlobalStorage) or set in.
+        default_edition: None,
+        deps_as_root: false, // deps_as_root is reserved, not used
         silence_warnings: false,
         warnings_are_errors: false,
         additional_named_addresses: BTreeMap::new(),

external-crates/move/solana/move-mv-llvm-compiler/tests/test_common.rs

@@ -417,6 +417,8 @@ pub fn run_move_to_llvm_build(
     fs::create_dir_all(test_plan.build_dir.to_str().unwrap()).expect("Directory does not exist");
     cmd.args(["-o", test_plan.build_dir.to_str().expect("utf-8")]);
 
+    debug!(target: "launch_compiler", "{:#?}", &cmd);
+
     let output = cmd.output()?;
 
     if !output.status.success() {