diff --git a/tldp/doctypes/docbook4xml.py b/tldp/doctypes/docbook4xml.py
index 3dd0299..9845322 100644
--- a/tldp/doctypes/docbook4xml.py
+++ b/tldp/doctypes/docbook4xml.py
@@ -1,11 +1,21 @@
 #! /usr/bin/python
 # -*- coding: utf8 -*-
 
-from ..utils import logger
-
+from ..utils import logger, which
 from .common import SignatureChecker
 
 
+def uniconf(p):
+    parser.add_argument('--docbook4xml-xsltproc', type=which,
+                        help='fully qualified path to xsltproc')
+    parser.add_argument('--docbook4xml-html2text', type=which,
+                        help='fully qualified path to html2text')
+    parser.add_argument('--docbook4xml-fop', type=which,
+                        help='fully qualified path to fop')
+    parser.add_argument('--docbook4xml-dblatex', type=which,
+                        help='fully qualified path to dblatex')
+
+
 class Docbook4XML(SignatureChecker):
     formatname = 'DocBook XML 4.x'
     extensions = ['.xml']
@@ -31,5 +41,3 @@ class Docbook4XML(SignatureChecker):
 
 #
 # -- end of file
-#
-# -- end of file
diff --git a/tldp/doctypes/docbook5xml.py b/tldp/doctypes/docbook5xml.py
index f163dc9..7c2376e 100644
--- a/tldp/doctypes/docbook5xml.py
+++ b/tldp/doctypes/docbook5xml.py
@@ -1,10 +1,21 @@
 #! /usr/bin/python
 # -*- coding: utf8 -*-
 
-from ..utils import logger
+from ..utils import logger, which
 from .common import SignatureChecker
 
 
+def uniconf(p):
+    parser.add_argument('--docbook5xml-xsltproc', type=which,
+                        help='fully qualified path to xsltproc')
+    parser.add_argument('--docbook5xml-html2text', type=which,
+                        help='fully qualified path to html2text')
+    parser.add_argument('--docbook5xml-fop', type=which,
+                        help='fully qualified path to fop')
+    parser.add_argument('--docbook5xml-dblatex', type=which,
+                        help='fully qualified path to dblatex')
+
+
 class Docbook5XML(SignatureChecker):
     formatname = 'DocBook XML 5.x'
     extensions = ['.xml']
diff --git a/tldp/doctypes/docbooksgml.py b/tldp/doctypes/docbooksgml.py
index c5a4414..bbf0266 100644
--- a/tldp/doctypes/docbooksgml.py
+++ b/tldp/doctypes/docbooksgml.py
@@ -1,10 +1,23 @@
 #! /usr/bin/python
 # -*- coding: utf8 -*-
 
-from ..utils import logger
+from ..utils import logger, which
 from .common import SignatureChecker
 
 
+def uniconf(p):
+    parser.add_argument('--docbooksgml-jw', type=which,
+                        help='fully qualified path to jw')
+    parser.add_argument('--docbooksgml-html2text', type=which,
+                        help='fully qualified path to html2text')
+    parser.add_argument('--docbooksgml-openjade', type=which,
+                        help='fully qualified path to openjade')
+    parser.add_argument('--docbooksgml-dblatex', type=which,
+                        help='fully qualified path to dblatex')
+    parser.add_argument('--docbooksgml-collateindex', type=which,
+                        help='fully qualified path to collateindex')
+
+
 class DocbookSGML(SignatureChecker):
     formatname = 'DocBook SGML 3.x/4.x'
     extensions = ['.sgml']
diff --git a/tldp/doctypes/linuxdoc.py b/tldp/doctypes/linuxdoc.py
index f5fb67c..cc27d06 100644
--- a/tldp/doctypes/linuxdoc.py
+++ b/tldp/doctypes/linuxdoc.py
@@ -4,11 +4,21 @@
 from __future__ import absolute_import, division, print_function
 
 import os
+import argparse
 
 from ..utils import logger, execute
 from .common import BaseDoctype, SignatureChecker
 
 
+def uniconf(p):
+    parser.add_argument('--linuxdoc-sgml2html', type=str,
+                        help='fully qualified path to sgml2html')
+    parser.add_argument('--linuxdoc-html2text', type=str,
+                        help='fully qualified path to html2text')
+    parser.add_argument('--linuxdoc-htmldoc', type=str,
+                        help='fully qualified path to htmldoc')
+
+
 class Linuxdoc(BaseDoctype, SignatureChecker):
     formatname = 'Linuxdoc'
     extensions = ['.sgml']
@@ -18,6 +28,7 @@ class Linuxdoc(BaseDoctype, SignatureChecker):
     def platform_check(self):
         for tool in self.tools:
             assert hasattr(self.platform, tool)
+            assert isexecutable(getattr(self.platform, tool))
         return True
 
     def create_txt(self):