Starting work on full GN build

runtime/vm/BUILD.gn

Index: runtime/vm/BUILD.gn
diff --git a/runtime/vm/BUILD.gn b/runtime/vm/BUILD.gn
index 5f0a1ba8480c9ac89ce867e9cde9d4ff3f734004..225afdf8892cd16e8be35964273ddc982cfaff17 100644
--- a/runtime/vm/BUILD.gn
+++ b/runtime/vm/BUILD.gn
@@ -25,7 +25,8 @@ config("libdart_vm_config") {
 
 
 static_library("libdart_platform") {
-  configs += ["..:dart_config", "..:dart_product_config"]
+  configs += ["..:dart_config",
+              "..:dart_maybe_product_config"]
   public_configs = [":libdart_vm_config"]
 
   platform_headers_gypi =
@@ -59,7 +60,20 @@ vm_sources_list = exec_script("../../tools/gypi_to_gn.py",
 
 static_library("libdart_vm") {
   configs += ["..:dart_config",
-              "..:dart_product_config",
+              "..:dart_maybe_product_config",
+              "..:dart_maybe_precompiled_runtime_config"]
+  public_configs = [":libdart_vm_config"]
+  set_sources_assignment_filter(["*_test.cc", "*_test.h"])
+  sources = vm_sources_list.sources
+  include_dirs = [
+    "..",
+  ]
+}
+
+
+static_library("libdart_vm_precompiled_runtime") {
+  configs += ["..:dart_config",
+              "..:dart_maybe_product_config",
               "..:dart_precompiled_runtime_config"]
   public_configs = [":libdart_vm_config"]
   set_sources_assignment_filter(["*_test.cc", "*_test.h"])
@@ -72,10 +86,24 @@ static_library("libdart_vm") {
 
 static_library("libdart_vm_nosnapshot") {
   configs += ["..:dart_config",
-              "..:dart_product_config",
-              "..:dart_precompiled_runtime_config"]
+              "..:dart_maybe_product_config",
+              "..:dart_maybe_precompiled_runtime_config",
+              "..:dart_no_snapshot_config",]
+  public_configs = [":libdart_vm_config"]
+  set_sources_assignment_filter(["*_test.cc", "*_test.h"])
+  sources = vm_sources_list.sources
+  include_dirs = [
+    "..",
+  ]
+}
+
+
+static_library("libdart_vm_nosnapshot_precompiled_runtime") {
+  configs += ["..:dart_config",
+              "..:dart_maybe_product_config",
+              "..:dart_precompiled_runtime_config",
+              "..:dart_no_snapshot_config",]
   public_configs = [":libdart_vm_config"]
-  defines = [ "DART_NO_SNAPSHOT" ]
   set_sources_assignment_filter(["*_test.cc", "*_test.h"])
   sources = vm_sources_list.sources
   include_dirs = [
@@ -86,10 +114,10 @@ static_library("libdart_vm_nosnapshot") {
 
 static_library("libdart_vm_nosnapshot_with_precompiler") {
   configs += ["..:dart_config",
-              "..:dart_product_config",
-              "..:dart_precompiler_config"]
+              "..:dart_maybe_product_config",
+              "..:dart_precompiler_config",
+              "..:dart_no_snapshot_config",]
   public_configs = [":libdart_vm_config"]
-  defines = [ "DART_NO_SNAPSHOT" ]
   set_sources_assignment_filter(["*_test.cc", "*_test.h"])
   sources = vm_sources_list.sources
   include_dirs = [
@@ -190,7 +218,17 @@ template("generate_core_libraries") {
 
   static_library("libdart_lib_nosnapshot") {
     configs += ["..:dart_config",
-                "..:dart_product_config",
+                "..:dart_maybe_product_config",
+                "..:dart_maybe_precompiled_runtime_config"]
+    deps = libdeps
+    sources = libsources + ["bootstrap.cc"] + liboutputs
+    include_dirs = [
+      "..",
+    ]
+  }
+  static_library("libdart_lib_nosnapshot_precompiled_runtime") {
+    configs += ["..:dart_config",
+                "..:dart_maybe_product_config",
                 "..:dart_precompiled_runtime_config"]
     deps = libdeps
     sources = libsources + ["bootstrap.cc"] + liboutputs
@@ -200,7 +238,7 @@ template("generate_core_libraries") {
   }
   static_library("libdart_lib_nosnapshot_with_precompiler") {
     configs += ["..:dart_config",
-                "..:dart_product_config",
+                "..:dart_maybe_product_config",
                 "..:dart_precompiler_config" ]
     deps = libdeps
     sources = libsources + [ "bootstrap.cc"] + liboutputs
@@ -210,7 +248,16 @@ template("generate_core_libraries") {
   }
   static_library("libdart_lib") {
     configs += ["..:dart_config",
-                "..:dart_product_config",
+                "..:dart_maybe_product_config",
+                "..:dart_maybe_precompiled_runtime_config"]
+    sources = libsources + [ "bootstrap_nocore.cc"]
+    include_dirs = [
+      "..",
+    ]
+  }
+  static_library("libdart_lib_precompiled_runtime") {
+    configs += ["..:dart_config",
+                "..:dart_maybe_product_config",
                 "..:dart_precompiled_runtime_config"]
     sources = libsources + [ "bootstrap_nocore.cc"]
     include_dirs = [