[gtkmm] Build/install error in libsigc++-2.0

[Chris Vine <chris cvine freeserve co uk>]

In case someone else is afflicted by this, there is a build/install problem 
with libsigc++-2.0.  Compiling any program fails with the following error:

In file included from /opt/gnome2/include/sigc++-2.0/sigc++/functors/slot.h:7,
                 from /opt/gnome2/include/sigc++-2.0/sigc++/signal_base.h:27,
                 from /opt/gnome2/include/sigc++-2.0/sigc++/signal.h:8,
                 from /opt/gnome2/include/sigc++-2.0/sigc++/sigc++.h:23,
                 from /opt/gnome2/include/glibmm-2.4/glibmm/dispatcher.h:24,
                 from /opt/gnome2/include/glibmm-2.4/glibmm.h:32,
                 from /opt/gnome2/include/gtkmm-2.4/gtkmm/main.h:6,
                 from main.cpp:17:
/opt/gnome2/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:5:75: 
sigc++config.h: No such file or directory
make[1]: *** [main.o] Interrupt

In this particular program, main.cpp includes gtkmm/main.h at line 17.  The 
problem is as reported, namely that adaptor/adaptor_trait.h includes 
sigc++config.h, but sigc++-config is not installed by 'make install'.

The solution is to copy sigc++-config.h from the libsigc++ package to 
$prefix/include/sigc++-2.0 (not $prefix/include/sigc++-2.0/sigc++).  Then 
everything works correctly.

This is with gcc-3.3.3.

On checking the regression, the same problem occurs with libsigc++-1.9.16, but 
not with libsigc++-1.9.15 (which I have previously used), so libsigc++-2 does 
not seem to have received a great deal of testing.  (The examples compile 
correctly because they look for their headers in the distribution package 
itself).

I have posted a bug to bugzilla.

Chris.