[gn build] Port fe6c240 (clangd modules)

Author: nico

llvm/utils/gn/secondary/clang-tools-extra/clangd/BUILD.gn

@@ -59,6 +59,7 @@ static_library("clangd") {
     "//clang/lib/Tooling/Core",
     "//clang/lib/Tooling/Inclusions",
     "//clang/lib/Tooling/Inclusions/Stdlib",
+    "//clang/lib/Tooling/DependencyScanning",
     "//clang/lib/Tooling/Refactoring",
     "//clang/lib/Tooling/Syntax",
     "//llvm/lib/Support",
@@ -114,12 +115,14 @@ static_library("clangd") {
     "IncludeFixer.cpp",
     "InlayHints.cpp",
     "JSONTransport.cpp",
+    "ModulesBuilder.cpp",
     "ParsedAST.cpp",
     "PathMapping.cpp",
     "Preamble.cpp",
     "Protocol.cpp",
     "Quality.cpp",
     "RIFF.cpp",
+    "ScanningProjectModules.cpp",
     "Selection.cpp",
     "SemanticHighlighting.cpp",
     "SemanticSelection.cpp",

llvm/utils/gn/secondary/clang-tools-extra/clangd/test/BUILD.gn

@@ -84,6 +84,7 @@ group("test") {
     "//llvm/utils/FileCheck",
     "//llvm/utils/llvm-lit",
     "//llvm/utils/not",
+    "//llvm/utils/split-file",
   ]
   if (clangd_build_xpc) {
     deps += [

llvm/utils/gn/secondary/clang-tools-extra/clangd/unittests/BUILD.gn

@@ -94,6 +94,7 @@ unittest("ClangdTests") {
     "ParsedASTTests.cpp",
     "PathMappingTests.cpp",
     "PreambleTests.cpp",
+    "PrerequisiteModulesTest.cpp",
     "PrintASTTests.cpp",
     "ProjectAwareIndexTests.cpp",
     "QualityTests.cpp",