diff --git a/bootstrap/coriolis2.spec.in b/bootstrap/coriolis2.spec.in
index c8c03515..fe9f4e93 100644
--- a/bootstrap/coriolis2.spec.in
+++ b/bootstrap/coriolis2.spec.in
@@ -1,21 +1,24 @@
 
-%define       coriolisVersion    1.0
-%define       coriolisTop        @coriolisTop@
-%define       svntag             @svntag@
-
-%define       with_binarytar     %{?_with_binarytar:1}%{!?_with_binarytar:0}
+%define         coriolisVersion    1.0
+%define         coriolisTop        @coriolisTop@
+%define         svntag             @svntag@
+	    
+%define         with_binarytar     %{?_with_binarytar:1}%{!?_with_binarytar:0}
 
 
-Name:         coriolis2
-Summary:      Coriolis 2 VLSI CAD Sytem
-Version:      %{coriolisVersion}.%{svntag}
-Release:      1%{dist}
-License:      LGPL/GPL
-Group:        Applications/Engineering
-Source:       %{name}-%{version}.tar.bz2
-URL:          http://www-asim.lip6.fr/
-Packager:     Jean-Paul Chaput <Jean-Paul.Chaput@lip6.fr>
-BuildRoot:    %{_tmppath}/root-%{name}
+Name:           coriolis2
+Summary:        Coriolis 2 VLSI CAD Sytem
+Version:        %{coriolisVersion}.%{svntag}
+Release:        1%{dist}
+License:        LGPL/GPL
+Group:          Applications/Engineering
+Source:         %{name}-%{version}.tar.bz2
+URL:            http://www-asim.lip6.fr/
+Packager:       Jean-Paul Chaput <Jean-Paul.Chaput@lip6.fr>
+Require(post):  ldconfig
+Require:        boost >= 1.33.1
+BuildRequire:   boost-devel >= 1.33.1
+BuildRoot:      %{_tmppath}/root-%{name}
 
 
 %description
@@ -82,6 +85,10 @@ EOF
  if [ -d %{buildroot} ]; then rm -r %{buildroot}; fi
 
 
+%post   -p /sbin/ldconfig
+%postun -p /sbin/ldconfig
+
+
 %files
 %defattr(-,root,root,-)
 %dir %{coriolisTop}/share/etc