[Lldb-commits] [lldb] [lldb-mcp] Launch lldb on demand, if needed. (PR #158701)

[John Harrison via lldb-commits]

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@@ -35,24 +41,88 @@ using namespace llvm;
 using namespace lldb;
 using namespace lldb_protocol::mcp;
 
+using lldb_private::Environment;
 using lldb_private::File;
+using lldb_private::FileSpec;
+using lldb_private::FileSystem;
+using lldb_private::Host;
 using lldb_private::MainLoop;
 using lldb_private::MainLoopBase;
 using lldb_private::NativeFile;
 
 namespace {
 
+constexpr size_t kForwardIOBufferSize = 1024;
+
 inline void exitWithError(llvm::Error Err, StringRef Prefix = "") {
   handleAllErrors(std::move(Err), [&](ErrorInfoBase &Info) {
     WithColor::error(errs(), Prefix) << Info.message() << '\n';
   });
   std::exit(EXIT_FAILURE);
 }
 
-constexpr size_t kForwardIOBufferSize = 1024;
+FileSpec driverPath() {
+  Environment host_env = Host::GetEnvironment();
+
+  // Check if an override for which lldb we're using exists, otherwise look next
+  // to the current binary.
+  std::string lldb_exe_path = host_env.lookup("LLDB_EXE_PATH");
+  auto &fs = FileSystem::Instance();
+  if (fs.Exists(lldb_exe_path)) {
+    return FileSpec(lldb_exe_path);
+  }
+
+  FileSpec lldb_exec_spec = lldb_private::HostInfo::GetProgramFileSpec();
+  lldb_exec_spec.SetFilename("lldb");
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ashgti wrote:

Added a specific name for Windows.

https://github.com/llvm/llvm-project/pull/158701