>>> Compiling source in /var/tmp/portage/sys-apps/suspend2-userui-0.6.4-r1/work/suspend2-userui-0.6.4 ...
x86_64-pc-linux-gnu-gcc -march=k8 -O2 -pipe   -c -o userui_core.o userui_core.c
x86_64-pc-linux-gnu-gcc -march=k8 -O2 -pipe   -c -o userui_text.o userui_text.c
In file included from userui_core.c:35:
userui.h: In function 'xgetpid':
userui.h:128: error: 'MAX_ERRNO' undeclared (first use in this function)
userui.h:128: error: (Each undeclared identifier is reported only once
userui.h:128: error: for each function it appears in.)
userui_core.c: In function 'sig_hand':
userui_core.c:476: warning: cast to pointer from integer of different size
In file included from userui_text.c:26:
userui.h: In function 'xgetpid':
userui.h:128: error: 'MAX_ERRNO' undeclared (first use in this function)
userui.h:128: error: (Each undeclared identifier is reported only once
userui.h:128: error: for each function it appears in.)
userui.h:128: error: 'errno' undeclared (first use in this function)
make: *** [userui_text.o] Error 1
make: *** Waiting for unfinished jobs....
make: *** [userui_core.o] Error 1

!!! ERROR: sys-apps/suspend2-userui-0.6.4-r1 failed.
Call stack:
  ebuild.sh, line 1603:   Called dyn_compile
  ebuild.sh, line 961:   Called src_compile
  suspend2-userui-0.6.4-r1.ebuild, line 36:   Called die

!!! emake suspend2ui_text failed
!!! If you need support, post the topmost build error, and the call stack if relevant.