Index: llvm/utils/gn/secondary/BUILD.gn
===================================================================
--- llvm/utils/gn/secondary/BUILD.gn
+++ llvm/utils/gn/secondary/BUILD.gn
@@ -8,6 +8,12 @@
     "//clang/lib/Serialization",
     "//clang/tools/clang-format",
     "//lld/test",
+    "//llvm/tools/llvm-cat",
+    "//llvm/tools/llvm-lto",
+    "//llvm/tools/llvm-lto2",
+    "//llvm/tools/llvm-modextract",
+    "//llvm/tools/llvm-profdata",
+    "//llvm/tools/llvm-symbolizer:symlinks",
     "//llvm/tools/llvm-undname",
   ]
   testonly = true
@@ -65,6 +71,11 @@
     "//llvm/tools/llvm-readobj:symlinks",
   ]
 }
+group("llvm-symbolizer") {
+  deps = [
+    "//llvm/tools/llvm-symbolizer:symlinks",
+  ]
+}
 
 # A pool called "console" in the root BUILD.gn is magic and represents ninja's
 # built-in console pool. (Requires a GN with `gn --version` >= 552353.)
Index: llvm/utils/gn/secondary/llvm/tools/llvm-cat/BUILD.gn
===================================================================
--- /dev/null
+++ llvm/utils/gn/secondary/llvm/tools/llvm-cat/BUILD.gn
@@ -0,0 +1,12 @@
+executable("llvm-cat") {
+  deps = [
+    "//llvm/lib/Bitcode/Reader",
+    "//llvm/lib/Bitcode/Writer",
+    "//llvm/lib/IR",
+    "//llvm/lib/IRReader",
+    "//llvm/lib/Support",
+  ]
+  sources = [
+    "llvm-cat.cpp",
+  ]
+}
Index: llvm/utils/gn/secondary/llvm/tools/llvm-lto/BUILD.gn
===================================================================
--- /dev/null
+++ llvm/utils/gn/secondary/llvm/tools/llvm-lto/BUILD.gn
@@ -0,0 +1,17 @@
+executable("llvm-lto") {
+  deps = [
+    "//llvm/lib/Bitcode/Reader",
+    "//llvm/lib/Bitcode/Writer",
+    "//llvm/lib/IR",
+    "//llvm/lib/IRReader",
+    "//llvm/lib/LTO",
+    "//llvm/lib/MC",
+    "//llvm/lib/Object",
+    "//llvm/lib/Support",
+    "//llvm/lib/Target",
+    "//llvm/lib/Target:TargetsToBuild",
+  ]
+  sources = [
+    "llvm-lto.cpp",
+  ]
+}
Index: llvm/utils/gn/secondary/llvm/tools/llvm-lto2/BUILD.gn
===================================================================
--- /dev/null
+++ llvm/utils/gn/secondary/llvm/tools/llvm-lto2/BUILD.gn
@@ -0,0 +1,16 @@
+executable("llvm-lto2") {
+  deps = [
+    "//llvm/lib/Bitcode/Reader",
+    "//llvm/lib/IR",
+    "//llvm/lib/LTO",
+    "//llvm/lib/Linker",
+    "//llvm/lib/MC",
+    "//llvm/lib/Object",
+    "//llvm/lib/Support",
+    "//llvm/lib/Target",
+    "//llvm/lib/Target:TargetsToBuild",
+  ]
+  sources = [
+    "llvm-lto2.cpp",
+  ]
+}
Index: llvm/utils/gn/secondary/llvm/tools/llvm-modextract/BUILD.gn
===================================================================
--- /dev/null
+++ llvm/utils/gn/secondary/llvm/tools/llvm-modextract/BUILD.gn
@@ -0,0 +1,12 @@
+executable("llvm-modextract") {
+  deps = [
+    "//llvm/lib/Bitcode/Reader",
+    "//llvm/lib/Bitcode/Writer",
+    "//llvm/lib/IR",
+    "//llvm/lib/IRReader",
+    "//llvm/lib/Support",
+  ]
+  sources = [
+    "llvm-modextract.cpp",
+  ]
+}
Index: llvm/utils/gn/secondary/llvm/tools/llvm-profdata/BUILD.gn
===================================================================
--- /dev/null
+++ llvm/utils/gn/secondary/llvm/tools/llvm-profdata/BUILD.gn
@@ -0,0 +1,10 @@
+executable("llvm-profdata") {
+  deps = [
+    "//llvm/lib/IR",
+    "//llvm/lib/ProfileData",
+    "//llvm/lib/Support",
+  ]
+  sources = [
+    "llvm-profdata.cpp",
+  ]
+}
Index: llvm/utils/gn/secondary/llvm/tools/llvm-symbolizer/BUILD.gn
===================================================================
--- /dev/null
+++ llvm/utils/gn/secondary/llvm/tools/llvm-symbolizer/BUILD.gn
@@ -0,0 +1,36 @@
+import("//llvm/tools/binutils_symlinks.gni")
+import("//llvm/utils/gn/build/symlink_or_copy.gni")
+
+if (llvm_install_binutils_symlinks) {
+  symlink_or_copy("addr2line") {
+    deps = [
+      ":llvm-symbolizer",
+    ]
+    source = "llvm-symbolizer"
+    output = "$root_out_dir/bin/addr2line"
+  }
+}
+
+# //:llvm-symbolizer depends on this symlink target, see comment in //BUILD.gn.
+group("symlinks") {
+  deps = [
+    ":llvm-symbolizer",
+  ]
+  if (llvm_install_binutils_symlinks) {
+    deps += [ ":addr2line" ]
+  }
+}
+
+executable("llvm-symbolizer") {
+  deps = [
+    "//llvm/lib/DebugInfo/DWARF",
+    "//llvm/lib/DebugInfo/PDB",
+    "//llvm/lib/DebugInfo/Symbolize",
+    "//llvm/lib/Demangle",
+    "//llvm/lib/Object",
+    "//llvm/lib/Support",
+  ]
+  sources = [
+    "llvm-symbolizer.cpp",
+  ]
+}