A revdep-rebuid caused a multitude of remerging (karamba, xmms et al, 
including flac).  Flac fails as follows:

================================================
../../libtool-disable-static --tag=CC --mode=compile 
i686-pc-linux-gnu-gcc -DHAV                                                     
E_CONFIG_H -I. -I. -I../.. -I../../src  -include 
config.h -I/usr/include/xmms -I    
/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -D_REENTRAN                                                     
T -I../.. -I./include -I../../include -DNDEBUG -DFLaC__INLINE=__inline__ -O2 -ma                                                     
rch=pentium3 -fomit-frame-pointer -msse -pipe -c -o configure.lo configure.c
 i686-pc-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I. -I../.. -I../../src -include 
conf                                                     
ig.h -I/usr/include/xmms -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/l                                                     
ib/glib/include -D_REENTRANT -I../.. -I./include -I../../include -DNDEBUG -DFLaC                                                     
__INLINE=__inline__ -O2 -march=pentium3 -fomit-frame-pointer -msse -pipe -c 
conf                                                     
igure.c  -fPIC -DPIC -o .libs/configure.o
configure.c:27:21: error: gtk/gtk.h: No such file or directory
In file included from configure.c:32:
/usr/include/xmms/dirbrowser.h:28: error: expected '=', ',', ';', 'asm' 
or '__at                                                     tribute__' 
before '*' token
In file included from configure.c:33:
/usr/include/xmms/titlestring.h:80: error: expected '=', ',', ';', 'asm' 
or '__a                                                     ttribute__' 
before '*' token
In file included from configure.c:34:
/usr/include/xmms/util.h:9: error: expected '=', ',', ';', 'asm' 
or '__attribute                                                     __' 
before '*' token
configure.c:94: error: expected '=', ',', ';', 'asm' or '__attribute__' 
before '                                                     *' token
configure.c:95: error: expected '=', ',', ';', 'asm' or '__attribute__' 
before '                                                     *' token
configure.c:97: error: expected '=', ',', ';', 'asm' or '__attribute__' 
before '                                                     *' token
configure.c:98: error: expected '=', ',', ';', 'asm' or '__attribute__' 
before '                                                     *' token
. . .
[snip]
configure.c:695: error: 'streaming_proxy_auth_user_entry' undeclared (first 
use                                                      in this function)
configure.c:700: error: 'streaming_proxy_auth_pass_label' undeclared (first 
use                                                      in this function)
configure.c:703: error: 'streaming_proxy_auth_pass_entry' undeclared (first 
use                                                      in this function)
configure.c:721: error: 'streaming_save_use' undeclared (first use in this 
funct                                                     ion)
configure.c:723: error: 'streaming_save_use_cb' undeclared (first use in this 
fu                                                     nction)
configure.c:726: error: 'streaming_save_hbox' undeclared (first use in this 
func                                                     tion)
configure.c:733: error: 'streaming_save_entry' undeclared (first use in this 
fun                                                     ction)
configure.c:738: error: 'streaming_save_browse_cb' undeclared (first use in 
this                                                      function)
configure.c:763: error: 'GTK_BUTTONBOX_END' undeclared (first use in this 
functi                                                     on)
configure.c:768: error: 'flac_configurewin_ok' undeclared (first use in this 
fun                                                     ction)
configure.c:769: error: 'GTK_CAN_DEFAULT' undeclared (first use in this 
function                                                     )
configure.c:774: error: 'gtk_widget_destroy' undeclared (first use in this 
funct                                                     ion)
configure.c: In function 'FLAC_XMMS__aboutbox':
configure.c:783: error: expected '=', ',', ';', 'asm' or '__attribute__' 
before                                                      '*' token
configure.c:783: error: 'about_window' undeclared (first use in this function)
configure.c:799: error: 'gtk_widget_destroyed' undeclared (first use in this 
fun                                                     ction)
make[3]: *** [configure.lo] Error 1
make[3]: Leaving directory 
`/var/tmp/portage/flac-1.1.2-r3/work/flac-1.1.2/src/p                                                     
lugin_xmms'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory 
`/var/tmp/portage/flac-1.1.2-r3/work/flac-1.1.2/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/flac-1.1.2-r3/work/flac-1.1.2'
make: *** [all] Error 2

!!! ERROR: media-libs/flac-1.1.2-r3 failed.
Call stack:
  ebuild.sh, line 1546:   Called dyn_compile
  ebuild.sh, line 937:   Called src_compile
  flac-1.1.2-r3.ebuild, line 51:   Called die
================================================

What now?
-- 
Regards,
Mick