linking with pkg-config and autoconf

[Dieter Lunn <dlunn mts net>]

I have created an autoconf based build system.  I use pkg_check_modules 
to find gtkmm then I use the cflags and libs.  however when the build 
process gets to linking I get these errors:
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Gdk::Color::~Color [in-charge]()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Atk::Implementor::ref_accessibile_vfunc()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkPixbufAnimation*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkWindowObject*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Gdk::AtomStringTraits::to_cpp_type(_GdkAtom*)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Gdk::Pixbuf::get_base_type()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkVisual*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `typeinfo for Gdk::Pixmap'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Pango::wrap_init()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkRectangle const*)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkColor*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Gdk::Window::raise()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_PangoContext*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Gdk::Color::Color[in-charge](_GdkColor*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkColormap*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to 
`Pango::FontDescription::FontDescription[in-charge](_PangoFontDescription*, 
bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkDevice*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Atk::wrap_init()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Gdk::Region::Region[in-charge](_GdkRegion*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Gdk::Color::Color[in-charge]()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Gdk::Pixmap::gobj_copy()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Pango::FontDescription::~FontDescription 
[in-charge]()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Pango::FontDescription::gobj_copy() const'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkRectangle*)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_PangoLayout*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `typeinfo for Atk::Implementor'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Atk::Implementor::Implementor[not-in-charge]()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to 
`Gdk::AtomStringTraits::to_c_type(std::basic_string<char, 
std::char_traits<char>, std::allocator<char> > const&)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_AtkObject*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to 
`Pango::Language::Language[in-charge](_PangoLanguage*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkPixmapObject*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkDisplay*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Atk::Implementor::~Implementor [in-charge 
deleting]()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Atk::Implementor::~Implementor [in-charge]()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `virtual thunk [v:0,-16] to 
Atk::Implementor::~Implementor [in-charge]()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkScreen*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Atk::Implementor::~Implementor [not-in-charge]()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkPixbuf*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Gdk::wrap_init()'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Atk::Implementor::add_interface(unsigned long)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkDrawable*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkDragContext*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to 
`Pango::AttrList::AttrList[in-charge](_PangoAttrList*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkGC*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to 
`Pango::TabArray::TabArray[in-charge](_PangoTabArray*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `Glib::wrap(_GdkImage*, bool)'
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../libgtkmm-2.4.so: 
undefined reference to `virtual thunk [v:0,-16] to 
Atk::Implementor::~Implementor [in-charge deleting]()'

Now the linking command is g++  -g -O2   -o planner -lgtkmm-2.4   
planner-main.o

hope this isn't too long of a message.