[gtkmm] help needed - configure problem, trying to install gtkmm

["Gabriel M. Elder" <gmelder centurytel net>]

Hi all,

I've decided to switch from QT to GTKMM for my C++ GUI development
because it looks cleaner, better engineered, and has a better license,
in my view. So now, i'm trying to install GTKMM 2.2 on my vanilla RedHat
8.0 box (with _everything_ installed). I already compiled and installed
the latest stable version (v.1.2.3) of libsigc++ from source, which
_appears_ to have gone as it should. However, when running the configure
script for GTKMM, it all goes well up until i get this:
........
checking for getc_unlocked... yes
checking for pkg-config... /usr/bin/pkg-config
checking for sigc++-1.2 >= 1.2.0 glib-2.0 >= 2.2.0 gobject-2.0 >= 2.2.0
gmodule-2.0 >= 2.2.0... Package sigc++-1.2 was not found in the
pkg-config search path.
Perhaps you should add the directory containing `sigc++-1.2.pc'
to the PKG_CONFIG_PATH environment variable
No package 'sigc++-1.2' found

configure: error: Library requirements (sigc++-1.2 >= 1.2.0 glib-2.0 >=
2.2.0 gobject-2.0 >= 2.2.0 gmodule-2.0 >= 2.2.0) not met; consider
adjusting the PKG_CONFIG_PATH environment variable if your libraries are
in a nonstandard prefix so pkg-config can find them.
........

I do not have a PKG_CONFIG_PATH environment variable set. I do have the
file "/usr/local/lib/pkgconfig/sigc++-1.2.pc", however. The path
"/usr/local/lib" directory is in my "/etc/ld.so.conf". I even tried
"export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig/" before another
configure attempt, and got the same results.

I am just unfamiliar enough with pkg-config and the
configure/configure.in to be uncertain as to how to proceed from here.
I'd also like to know what versions of GNOME and GTK+ are required in
order to use this latest version of GTKMM. Additionally, i want to use
Glade with GTKMM. If someone would let me know how to correct this
problem and what additional software i need, if any, to use the "latest
and greatest", it would be much appreciated.

thanx,
- gabriel