package libgmm-dev (not installed) failed to install/upgrade: trying to overwrite '/usr/include/gmm/gmm_precond_ilu.h', which is also in package libgmm++-dev 0:3.1-1

[Steve Beattie]

conflicting headers in libgmm-dev and libgmm++-dev

$ apt-cache policy libgmm-dev
libgmm-dev:
  Installed: (none)
  Candidate: 3.0+svn758845-0ubuntu1
  Version table:
     3.0+svn758845-0ubuntu1 0
        500 http://us.archive.ubuntu.com karmic/main Packages

ProblemType: Package
AptOrdering:
 libgmm++-dev: Install
 libgmm-dev: Install
 libgmm++-dev: Configure
 libgmm-dev: Configure
Architecture: i386
Date: Fri Oct 16 14:51:13 2009
DistroRelease: Ubuntu 9.10
ErrorMessage: trying to overwrite '/usr/include/gmm/gmm_precond_ilu.h', which is also in package libgmm++-dev 0:3.1-1
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Alpha i386 (20091009)
Package: libgmm-dev (not installed)
ProcVersionSignature: Ubuntu 2.6.31-14.47-generic
SourcePackage: gmm
Title: package libgmm-dev (not installed) failed to install/upgrade: trying to overwrite '/usr/include/gmm/gmm_precond_ilu.h', which is also in package libgmm++-dev 0:3.1-1
Uname: Linux 2.6.31-14-generic i686
XsessionErrors:
 (gnome-settings-daemon:1687): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:1687): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (polkit-gnome-authentication-agent-1:1764): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:1748): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed