add scripts to build chakracore from GN

Author: VSadov

BUILD.gn

@@ -0,0 +1,45 @@
+# Copyright (c) 2018 Microsoft. All rights reserved.
+
+action("ChakraCoreBuild") {
+  script = "tools/run_msbuild.py"
+
+  chakracore_solution = rebase_path("Build\Chakra.Core.sln")
+
+  # NOSORT
+  sources = [
+    chakracore_solution
+  ]
+
+  outputs = [
+    "$target_gen_dir/ChakraCore.lib",
+    "$target_gen_dir/../../../ChakraCore.pdb",
+    "$target_gen_dir/../../../ChakraCore.dll"
+  ]
+
+  # The path should be like: "Build/VcBuild/bin/x64_debug""
+  outdir = "Build/VcBuild/bin/" + current_cpu
+
+  if (is_debug) {
+    config = "Debug"
+    outdir = outdir + "_debug"
+  }
+  else {
+    config = "Release"
+    outdir = outdir + "_release"
+  }
+
+  outdir = rebase_path(outdir)
+
+# On Windows, run msbuild.exe on sln and copy lib, dll, pdb files to appropriate locations, 
+# def main(sln, outdir, target_gen_dir, *flags):
+
+  args = [ 
+    chakracore_solution,
+    outdir,
+    rebase_path(target_gen_dir),
+    "/m",
+    "/t:Build",
+    "/p:Configuration=$config",
+    "/p:platform=$current_cpu"
+  ] 
+}

tools/run_msbuild.py

@@ -0,0 +1,59 @@
+# Copyright (c) 2018 Microsoft. All rights reserved.
+
+import glob
+import json
+import os
+import pipes
+import platform
+import re
+import shutil
+import stat
+import subprocess
+import sys
+
+# add build to path
+BUILD_TOOLS_DIR = os.path.abspath(os.path.join(
+    os.path.dirname(__file__), "../../../build"))
+sys.path.append(BUILD_TOOLS_DIR)
+import find_depot_tools
+
+find_depot_tools.add_depot_tools_to_path()
+import vswhere
+
+
+# On Windows, run msbuild.exe on sln and copy lib, dll, pdb files to appropriate locations, 
+def main(sln, outdir, target_gen_dir, *flags):
+
+  # On non-Windows, that's all we can do.
+  if sys.platform != 'win32':
+    print "builds on non-windows are NYI!!"
+    return 1
+
+  status_code, vsInstallRoot = vswhere.get_vs_path()
+  if status_code != 0:
+    print "Visual Studio not found!!"
+    return 1
+
+  msbuildPath = os.path.join(vsInstallRoot["path"], r"MSBuild\15.0\Bin\MSBuild.exe")
+  args = [msbuildPath, os.path.normpath(sln)] + list(flags)
+
+  print "== BUILDING CHAKRACORE:"
+  print " ".join(args)
+
+  popen = subprocess.Popen(args, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+  out, _ = popen.communicate() 
+
+  if popen.returncode != 0:
+      print out
+      return popen.returncode
+  
+  # Now copy the lib  target_gen_dir and  dll/pdb  to the build root 
+  # 2 levels above  ( above gen\third_party\chakracore )
+  shutil.copy(os.path.join(outdir, "ChakraCore.lib"), target_gen_dir)
+  shutil.copy(os.path.join(outdir, "ChakraCore.dll"), os.path.join(target_gen_dir, "../../.."))
+  shutil.copy(os.path.join(outdir, "ChakraCore.pdb"), os.path.join(target_gen_dir, "../../.."))
+
+  return 0
+
+if __name__ == '__main__':
+  sys.exit(main(*sys.argv[1:]))