diff --git a/scripts/waifulib/vgui.py b/scripts/waifulib/vgui.py
new file mode 100644
index 00000000..4bcae7e1
--- /dev/null
+++ b/scripts/waifulib/vgui.py
@@ -0,0 +1,79 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# mittorn, 2018
+
+from waflib.Configure import conf
+import os
+
+VGUI_SUPPORTED_OS = ['win32', 'darwin', 'linux']
+
+VGUI_FRAGMENT = '''#include <VGUI.h>
+int main() { return 0; }'''
+
+def options(opt):
+	grp = opt.add_option_group('VGUI options')
+
+	vgui_dev_path = os.path.join(opt.path.path_from(opt.root), 'vgui-dev')
+
+	grp.add_option('--vgui', action = 'store', dest = 'VGUI_DEV', default=vgui_dev_path,
+		help = 'path to vgui-dev repo [default: %default]')
+
+	grp.add_option('--skip-vgui-sanity-check', action = 'store_false', dest = 'VGUI_SANITY_CHECK', default=True,
+		help = 'skip checking VGUI sanity [default: %default]' )
+	return
+
+@conf
+def check_vgui(conf):
+	conf.start_msg('Does this architecture support VGUI?')
+
+	if conf.env.DEST_CPU != 'x86' and not (conf.env.DEST_CPU == 'x86_64' and not conf.options.ALLOW64):
+		conf.end_msg('no')
+		Logs.warn('vgui is not supported on this CPU: ' + str(conf.env.DEST_CPU))
+		return False
+	else: conf.end_msg('yes')
+
+	conf.start_msg('Does this OS support VGUI?')
+	if conf.env.DEST_OS not in VGUI_SUPPORTED_OS:
+		conf.end_msg('no')
+		Logs.warn('vgui is not supported on this OS: ' + str(conf.env.DEST_OS))
+		return False
+	else: conf.end_msg('yes')
+
+	conf.start_msg('Does this toolchain able to link VGUI?')
+	if conf.env.DEST_OS == 'win32' and conf.env.COMPILER_CXX == 'g++':
+		conf.end_msg('no')
+		# we have ABI incompatibility ONLY on MinGW
+		Logs.warn('vgui can\'t be linked with MinGW')
+		return False
+	else: conf.end_msg('yes')
+
+	conf.start_msg('Configuring VGUI by provided path')
+	vgui_dev = conf.options.VGUI_DEV
+
+	if conf.env.DEST_OS == 'win32':
+		conf.env.LIB_VGUI = ['vgui']
+		conf.env.LIBPATH_VGUI = [os.path.abspath(os.path.join(vgui_dev, 'lib/win32_vc6/'))]
+	else:
+		libpath = os.path.abspath(os.path.join(vgui_dev, 'lib'))
+		if conf.env.DEST_OS == 'linux':
+			conf.env.LIB_VGUI = [':vgui.so']
+			conf.env.LIBPATH_VGUI = [libpath]
+		elif conf.env.DEST_OS == 'darwin':
+			conf.env.LDFLAGS_VGUI = [os.path.join(libpath, 'vgui.dylib')]
+		else:
+			conf.fatal('vgui is not supported on this OS: ' + conf.env.DEST_OS)
+	conf.env.INCLUDES_VGUI = [os.path.abspath(os.path.join(vgui_dev, 'include'))]
+
+	conf.env.HAVE_VGUI = 1
+	conf.end_msg('yes: {0}, {1}, {2}'.format(conf.env.LIB_VGUI, conf.env.LIBPATH_VGUI, conf.env.INCLUDES_VGUI))
+
+	if conf.env.HAVE_VGUI and conf.options.VGUI_SANITY_CHECK:
+		try:
+			conf.check_cxx(fragment=VGUI_FRAGMENT,
+				msg = 'Checking for library VGUI sanity',
+				use = 'VGUI',
+				execute = False)
+		except conf.errors.ConfigurationError:
+			conf.fatal("Can't compile simple program. Check your path to vgui-dev repository.")
+
+	return True