diff --git a/engine/sv_main.cpp b/engine/sv_main.cpp
index d2cdb551..66fadb3c 100644
--- a/engine/sv_main.cpp
+++ b/engine/sv_main.cpp
@@ -1388,6 +1388,7 @@ bool CGameServer::FinishCertificateCheck( netadr_t &adr, int nAuthProtocol, cons
 		if ( AllowDebugDedicatedServerOutsideSteam() )
 			return true;
 
+/*
 		if ( !Host_IsSinglePlayerGame() || sv.IsDedicated()) // PROTOCOL_HASHEDCDKEY isn't allowed for multiplayer servers
 		{
 			RejectConnection( adr, clientChallenge, "#GameUI_ServerCDKeyAuthInvalid" );
@@ -1398,7 +1399,7 @@ bool CGameServer::FinishCertificateCheck( netadr_t &adr, int nAuthProtocol, cons
 		{
 			RejectConnection( adr, clientChallenge, "#GameUI_ServerInvalidCDKey" );
 			return false;
-		}
+		}*/
 
 		int nHashCount = 0;
 
diff --git a/scripts/waifulib/vpc_parser.py b/scripts/waifulib/vpc_parser.py
new file mode 100644
index 00000000..275d2afd
--- /dev/null
+++ b/scripts/waifulib/vpc_parser.py
@@ -0,0 +1,181 @@
+# It looks like shit, but I'm not particularly worried about such scripts.
+
+import os
+import re
+
+token_list = [
+	re.compile(r'&&'),
+	re.compile(r'\|\|'),
+	re.compile(r'\!'),
+	re.compile(r'[a-zA-Z0-9_.]*')
+]
+
+match_statement = re.compile(r'\[.*\]')
+
+def compute_statement( defines, statement ):
+	vars = {}
+	for define in defines:
+		d=define.split('=')[0]
+		vars.update({d:True})
+
+	def t( op ):
+		if op == '1': return True
+		elif op == '0': return False
+		elif op not in vars: return False
+
+		return vars[op]
+
+	pos = 0
+
+	statement = re.sub(r'\[|\]| |\$', '', statement)
+
+	l = []
+
+	final = True
+	final_init = False
+
+	while pos < len(statement):
+		for token in token_list:
+			r = token.search(statement, pos)
+			if r and r.start() == pos:
+				l += [r.group(0)]
+				pos = r.end()
+
+	k = 0
+	for i in range(len(l)):
+		j = i-k
+		if l[j] == '!' and j+1 < len(l):
+			df = l[j+1]
+			if df in vars:
+				vars[df] = not vars[df]
+			else: vars.update({df:True})
+			del l[j]
+			k += 1
+
+	k = 0
+	for i in range(len(l)):
+		j = i-k
+		if l[j] == '&&' and j+1 < len(l) and j-1 >= 0:
+			val = 0
+			if t(l[j-1]) and t(l[j+1]):
+				val = 1
+			del l[j+1], l[j], l[j-1]
+			l.insert(j, str(val))
+			k += 2
+
+	k = 0
+	for i in range(len(l)):
+		j = i-k
+		if l[j] == '||' and j+1 < len(l) and j-1 >= 0:
+			val = 0
+			if t(l[j-1]) or t(l[j+1]):
+				val = 1
+			del l[j+1], l[j], l[j-1]
+			l.insert(j, str(val))
+			k += 2
+
+	return t(l[0])
+
+def project_key(l):
+	for k in l.keys():
+		if '$Project' in k:
+			return k
+
+def fix_dos_path( path ):
+
+	path = path.replace('\\', '/')
+	p = path.split('/')
+
+	filename = p[-1]
+	find_path = '/'.join(p[0:len(p)-1])
+	if find_path == '': find_path = './'
+	else: find_path += '/'
+
+	dirlist = os.listdir(find_path)
+	for file in dirlist:
+		if file == filename:
+			return find_path+file
+		elif file.lower() == filename.lower():
+			return find_path+file
+	return find_path+filename
+
+def parse_vpcs( env ,vpcs, basedir ):
+	back_path = os.path.abspath('.')
+	os.chdir(env.SUBPROJECT_PATH[0])
+
+	sources = []
+	defines = []
+	includes = []
+
+	for vpc in vpcs:
+		f=open(vpc, 'r').read().replace('\\\n', ';')
+
+		l = f.split('\n')
+
+		iBrackets = 0
+
+		next_br = False
+		ret = {}
+		cur_key = ''
+
+		for i in l:
+			if i == '': continue
+
+			s = match_statement.search(i)
+			if s and not compute_statement(env.DEFINES+defines, s.group(0)):
+				continue
+
+			if i.startswith('$') and iBrackets == 0:
+				ret.update({i:[]})
+				cur_key = i
+				next_br = True
+			elif i == '{':
+				iBrackets += 1
+				next_br = False
+			elif i == '}':
+				iBrackets -= 1
+			elif iBrackets > 0:
+				ret[cur_key].append(i)
+
+			if next_br:
+				next_br = False
+
+		key = project_key(ret)
+		l=ret[key]
+
+		for i in l:
+			if '-$File' in i and '.h"' not in i:
+				for k in i.split(';'):
+					k = k.replace('$SRCDIR', basedir)
+					s = fix_dos_path(k.split('"')[1])
+
+					for j in range(len(sources)):
+						if sources[j] == s:
+							del sources[j]
+							break
+
+			elif '$File' in i and '.h"' not in i:
+				for j in i.split(';'):
+					j = j.replace('$SRCDIR', basedir)
+					s = fix_dos_path(j.split('"')[1])
+					sources.append(s)
+
+		for i in ret['$Configuration']:
+			if '$PreprocessorDefinitions' in i:
+				i = i.replace('$BASE', '')
+				s = i.split('"')[1]
+				s = re.split(';|,', s)
+				for j in s:
+					if j != '' and j not in defines:
+						defines.append(j)
+			if '$AdditionalIncludeDirectories' in i:
+				i = i.replace('$BASE', '').replace('$SRCDIR', basedir)
+				s = i.split('"')[1]
+				s = re.split(';|,', s)
+				for j in s:
+					j = j.replace('\\','/')
+					if j != '' and j not in includes:
+						includes.append(j)
+	os.chdir(back_path)
+
+	return {'defines':defines, 'includes':includes, 'sources': sources}
diff --git a/wscript b/wscript
index 5ea54475..ea019053 100644
--- a/wscript
+++ b/wscript
@@ -341,8 +341,8 @@ def configure(conf):
 		conf.check(lib='android_support', uselib_store='ANDROID_SUPPORT')
 
 	if conf.env.DEST_OS != 'win32':
-		conf.check_cc(lib='dl', mandatory=True)
-		conf.check_cc(lib='bz2', mandatory=True)
+		conf.check_cc(lib='dl', mandatory=False)
+		conf.check_cc(lib='bz2', mandatory=False)
 		conf.check_cc(lib='rt', mandatory=False)
 
 		if not conf.env.LIB_M: # HACK: already added in xcompile!