[SCIM] errors during make

[Jun Chen]

I am trying to install the source package on redhat 8.
Here is the error I got when running make:

scim_panel_gtk.cpp: In function `void ui_initialize()':
scim_panel_gtk.cpp:647: `_tray_icon' undeclared (first use this function)
scim_panel_gtk.cpp:647: (Each undeclared identifier is reported only once for
   each function it appears in.)
scim_panel_gtk.cpp:649: `_tray_icon_destroy_signal_id' undeclared (first use
   this function)
make[3]: *** [scim_panel_gtk-scim_panel_gtk.o] Error 1
make[3]: Leaving directory `/localdisk/scim-0.99.2/extras/panel'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/localdisk/scim-0.99.2/extras'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/localdisk/scim-0.99.2'
make: *** [all] Error 2

Here is the result from configure:

Build options:
  Version                 0.99.2
  Install prefix          /usr/local
  Build shared libs       yes
  Build static libs       yes
  Enable debug            no

Module options:
  GConf config module     yes
  Simple config module    yes
  Socket config module    yes

  X11 FrontEnd module     yes
  Socket FrontEnd module  yes

  RawCode IMEngine module yes
  Table IMEngine module   yes
  Socket IMEngine module  yes

  GTK2 IMModule           yes

  GUI Setup Utility       yes

  GTK2 Panel GUI          yes

  GTK2 Utility Library    yes
  Enable TrayIcon         no

I wanted to enable trayicon, but don't know how.