diff -ur NuSMV-2.4.0/nusmv/doc/html/Makefile.am NuSMV-2.4.0-ok/nusmv/doc/html/Makefile.am
--- NuSMV-2.4.0/nusmv/doc/html/Makefile.am	2005-03-03 12:05:28.000000000 +0100
+++ NuSMV-2.4.0-ok/nusmv/doc/html/Makefile.am	2006-10-03 17:30:35.000000000 +0200
@@ -46,7 +46,7 @@
 docs: helpfiles
 
 helpfiles: 
-	cd $(top_builddir) && $(SHELL) helpers/extract_doc .
+	cd $(top_builddir) && /bin/bash helpers/extract_doc .
 
 install: docs install-am
 
diff -ur NuSMV-2.4.0/nusmv/doc/tutorial/Makefile.am NuSMV-2.4.0-ok/nusmv/doc/tutorial/Makefile.am
--- NuSMV-2.4.0/nusmv/doc/tutorial/Makefile.am	2005-05-09 10:30:18.000000000 +0200
+++ NuSMV-2.4.0-ok/nusmv/doc/tutorial/Makefile.am	2006-10-03 17:03:50.000000000 +0200
@@ -62,7 +62,7 @@
 
 if HAVE_LATEX
 install-data-local: tutorial.ps
-	$(install_sh_DATA) tutorial.ps $(datadir)/nusmv/doc/tutorial.ps
+	$(install_sh_DATA) tutorial.ps $(DESTDIR)$(datadir)/nusmv/doc/tutorial.ps
 
 else 
 install-data-local:
diff -ur NuSMV-2.4.0/nusmv/doc/user-man/Makefile.am NuSMV-2.4.0-ok/nusmv/doc/user-man/Makefile.am
--- NuSMV-2.4.0/nusmv/doc/user-man/Makefile.am	2005-10-26 11:11:25.000000000 +0200
+++ NuSMV-2.4.0-ok/nusmv/doc/user-man/Makefile.am	2006-10-03 17:04:09.000000000 +0200
@@ -67,7 +67,7 @@
 
 if HAVE_LATEX
 install-data-local: nusmv.ps
-	$(install_sh_DATA) nusmv.ps $(datadir)/nusmv/doc/nusmv.ps
+	$(install_sh_DATA) nusmv.ps $(DESTDIR)$(datadir)/nusmv/doc/nusmv.ps
 else 
 install-data-local:
 	@echo Cannot generate manual: latex not found
diff -ur NuSMV-2.4.0/nusmv/helpers/extract_doc.in NuSMV-2.4.0-ok/nusmv/helpers/extract_doc.in
--- NuSMV-2.4.0/nusmv/helpers/extract_doc.in	2005-03-03 13:12:59.000000000 +0100
+++ NuSMV-2.4.0-ok/nusmv/helpers/extract_doc.in	2006-10-03 17:29:10.000000000 +0200
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # FileName	[ extract_doc.in ]
 #