diff --git a/configure.py b/configure.py
index 83a5ac8..6332144 100755
--- a/configure.py
+++ b/configure.py
@@ -24,6 +24,7 @@ parser.add_option("--branding", action="store", type="string", dest="branding",
 parser.add_option("--branding-name", action="store", type="string", dest="branding-name", default="", help="branding name")
 parser.add_option("--branding-url", action="store", type="string", dest="branding-url", default="", help="branding url")
 parser.add_option("--sdkjs-addon", action="append", type="string", dest="sdkjs-addons", default=[], help="sdkjs addons")
+parser.add_option("--sdkjs-addon-desktop", action="append", type="string", dest="sdkjs-addons-desktop", default=[], help="sdkjs addons desktop")
 parser.add_option("--server-addon", action="append", type="string", dest="server-addons", default=[], help="server addons")
 parser.add_option("--web-apps-addon", action="append", type="string", dest="web-apps-addons", default=[], help="web-apps addons")
 parser.add_option("--sdkjs-plugin", action="append", type="string", dest="sdkjs-plugin", default=["default"], help="sdkjs addons for all products")
diff --git a/scripts/base.py b/scripts/base.py
index 9a5d6e2..655c06c 100644
--- a/scripts/base.py
+++ b/scripts/base.py
@@ -629,6 +629,16 @@ def sdkjs_addons_param():
       params.append("--addon=" + config.sdkjs_addons[name])
   return params
 
+def sdkjs_addons_desktop_param():
+  if ("" == config.option("sdkjs-addons-desktop")):
+    return []
+  params = []
+  addons_list = config.option("sdkjs-addons-desktop").rsplit(", ")
+  for name in addons_list:
+    if name in config.sdkjs_addons_desktop:
+      params.append("--addon=" + config.sdkjs_addons_desktop[name])
+  return params
+
 def server_addons_param():
   if ("" == config.option("server-addons")):
     return []
@@ -845,6 +855,8 @@ def copy_sdkjs_plugin(src_dir, dst_dir, name, is_name_as_guid=False, is_desktop_
     create_dir(dst_dir_path)
     copy_dir_content(src_dir_path, dst_dir_path, "", ".git")
     return
+  if not is_file(src_dir_path + "/config.json"):
+    return
   config_content = readFile(src_dir_path + "/config.json")
   index_start = config_content.find("\"asc.{")
   index_start += 5
diff --git a/scripts/build_js.py b/scripts/build_js.py
index 172ae4c..e9fbb22 100644
--- a/scripts/build_js.py
+++ b/scripts/build_js.py
@@ -26,7 +26,6 @@ def make():
   base.copy_dir(base_dir + "/../sdkjs/deploy/sdkjs", out_dir + "/builder/sdkjs")
 
   # desktop
-  build_sdk_desktop(base_dir + "/../sdkjs/build")
   if config.check_option("module", "desktop"):
     build_sdk_desktop(base_dir + "/../sdkjs/build")
     base.create_dir(out_dir + "/desktop")
@@ -62,7 +61,7 @@ def build_interface(directory):
 def build_sdk_desktop(directory):
   #_run_npm_cli(directory)
   _run_npm(directory)  
-  _run_grunt(directory, ["--level=ADVANCED", "--desktop=true"] + base.sdkjs_addons_param())
+  _run_grunt(directory, ["--level=ADVANCED", "--desktop=true"] + base.sdkjs_addons_param() + base.sdkjs_addons_desktop_param())
   return
 
 def build_sdk_builder(directory):
diff --git a/scripts/config.py b/scripts/config.py
index 1a1d84b..929de6a 100644
--- a/scripts/config.py
+++ b/scripts/config.py
@@ -77,6 +77,10 @@ def parse():
   sdkjs_addons["content-controls"] = "sdkjs-content-controls"
   sdkjs_addons["pivot-tables"] = "sdkjs-pivot-tables"
 
+  global sdkjs_addons_desktop
+  sdkjs_addons_desktop = {}
+  sdkjs_addons_desktop["disable-features"] = "sdkjs-disable-features"
+
   global server_addons
   server_addons = {}
   server_addons["license"] = "server-license"
diff --git a/scripts/core_common/modules/openssl.py b/scripts/core_common/modules/openssl.py
index 2615629..a38e038 100644
--- a/scripts/core_common/modules/openssl.py
+++ b/scripts/core_common/modules/openssl.py
@@ -48,6 +48,28 @@ def make():
       qmake_bat.append("call nmake build_libs install")
       base.run_as_bat(qmake_bat, True)
     os.chdir(old_cur)
+    # xp ----------------------------------------------------------------------------------------------------
+    os.chdir(base_dir + "/openssl")
+    base.replaceInFile(base_dir + "/openssl/crypto/rand/rand_win.c", "define USE_BCRYPTGENRANDOM", "define USE_BCRYPTGENRANDOM_FIX")
+    old_cur_dir = base_dir.replace(" ", "\\ ")
+    if (-1 != config.option("platform").find("win_64_xp")) and not base.is_dir("../build/win_64_xp"):
+      base.create_dir("./../build/win_64_xp")
+      qmake_bat = []
+      qmake_bat.append("call \"" + config.option("vs-path") + "/vcvarsall.bat\" x64")      
+      qmake_bat.append("perl Configure VC-WIN64A --prefix=" + old_cur_dir + "\\build\\win_64_xp --openssldir=" + old_cur_dir + "\\build\\win_64_xp no-shared no-asm no-async")
+      qmake_bat.append("call nmake clean")
+      qmake_bat.append("call nmake build_libs install")
+      base.run_as_bat(qmake_bat, True)
+    if (-1 != config.option("platform").find("win_32_xp")) and not base.is_dir("../build/win_32_xp"):
+      base.create_dir("./../build/win_32_xp")
+      qmake_bat = []
+      qmake_bat.append("call \"" + config.option("vs-path") + "/vcvarsall.bat\" x86")
+      qmake_bat.append("perl Configure VC-WIN32 --prefix=" + old_cur_dir + "\\build\\win_32_xp --openssldir=" + old_cur_dir + "\\build\\win_32_xp no-shared no-asm no-async")
+      qmake_bat.append("call nmake clean")
+      qmake_bat.append("call nmake build_libs install")
+      base.run_as_bat(qmake_bat, True)
+    os.chdir(old_cur)
+    # -------------------------------------------------------------------------------------------------------
     return
 
   if (-1 != config.option("platform").find("linux")) and not base.is_dir("../build/linux_64"):
diff --git a/scripts/core_common/modules/v8.py b/scripts/core_common/modules/v8.py
index f039b84..0bc050b 100644
--- a/scripts/core_common/modules/v8.py
+++ b/scripts/core_common/modules/v8.py
@@ -5,6 +5,7 @@ sys.path.append('../..')
 import config
 import base
 import os
+import subprocess
 
 def clean():
   if base.is_dir("depot_tools"):
@@ -35,6 +36,27 @@ def is_xp_platform():
     return True
   return False
 
+def is_use_clang():
+  get_gcc_version = "gcc -dumpfullversion -dumpversion"
+  popen = subprocess.Popen(get_gcc_version, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
+  gcc_version = 4
+  try:
+    stdout, stderr = popen.communicate()
+    popen.wait()
+    gcc_version_str = stdout.strip().decode("utf-8")
+    gcc_version_major = gcc_version_str.split(".")[0]
+    gcc_version = int(gcc_version_major)
+  finally:
+    popen.stdout.close()
+    popen.stderr.close()
+    
+  is_clang = "false"
+  if (gcc_version >= 6):
+    is_clang = "true"
+
+  print("gcc major version: " + str(gcc_version) + ", use clang:" + is_clang)
+  return is_clang
+
 def make():
   if not is_main_platform():
     make_xp()
@@ -118,11 +140,11 @@ def make():
   base_args32 = "target_cpu=\\\"x86\\\" v8_target_cpu=\\\"x86\\\" v8_static_library=true is_component_build=false v8_use_snapshot=false"
 
   if config.check_option("platform", "linux_64"):
-    base.cmd2("gn", ["gen", "out.gn/linux_64", "--args=\"is_debug=false " + base_args64 + " is_clang=false use_sysroot=false\""])
+    base.cmd2("gn", ["gen", "out.gn/linux_64", "--args=\"is_debug=false " + base_args64 + " is_clang=" + is_use_clang() + " use_sysroot=false treat_warnings_as_errors=false\""])
     base.cmd("ninja", ["-C", "out.gn/linux_64"])
 
   if config.check_option("platform", "linux_32"):
-    base.cmd2("gn", ["gen", "out.gn/linux_32", "--args=\"is_debug=false " + base_args32 + " is_clang=false use_sysroot=false\""])
+    base.cmd2("gn", ["gen", "out.gn/linux_32", "--args=\"is_debug=false " + base_args32 + " is_clang=" + is_use_clang() + " use_sysroot=false treat_warnings_as_errors=false\""])
     base.cmd("ninja", ["-C", "out.gn/linux_32"])
 
   if config.check_option("platform", "mac_64"):
diff --git a/scripts/deploy_desktop.py b/scripts/deploy_desktop.py
index 05f0baf..38e0a2a 100644
--- a/scripts/deploy_desktop.py
+++ b/scripts/deploy_desktop.py
@@ -105,7 +105,7 @@ def make():
 
     # libraries
     base.copy_lib(core_build_dir + "/lib/" + platform_postfix, root_dir, "hunspell")
-    base.copy_lib(core_build_dir + "/lib/" + platform_postfix, root_dir, "ooxmlsignature")
+    base.copy_lib(core_build_dir + "/lib/" + platform_postfix + ("/xp" if isWindowsXP else ""), root_dir, "ooxmlsignature")
     base.copy_lib(core_build_dir + "/lib/" + platform_postfix + ("/xp" if isWindowsXP else ""), root_dir, "ascdocumentscore")
     if (0 != platform.find("mac")):
       base.copy_lib(core_build_dir + "/lib/" + platform_postfix + ("/xp" if isWindowsXP else ""), root_dir, "qtascdocumentscore")