compile error on 32 bit Gentoo Linux

I do get since today (yesterday it was ok):


  CC    net/ether.o
<command-line>:0:0: warning: "_FORTIFY_SOURCE" redefined [enabled by default]
net/ether.c:1:0: note: this is the location of the previous definition
  CC    net/icmp6_setsockopt.o
net/ether.c:25:2: error: ‘ETH_P_802_3_MIN’ undeclared here (not in a function)
make: *** [net/ether.o] Error 1
make: *** Waiting for unfinished jobs....
<command-line>:0:0: warning: "_FORTIFY_SOURCE" redefined [enabled by default]
net/icmp6_setsockopt.c:1:0: note: this is the location of the previous definition
 * ERROR: dev-util/trinity-9999::toralf failed (compile phase):

-- 
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3