XKBExtDev.c:39:31: X11/extensions/XI.h: No such file or directory
XKBExtDev.c: In function `_InitLedStuff':
XKBExtDev.c:445: error: `KbdFeedbackClass' undeclared (first use in this function)
XKBExtDev.c:445: error: (Each undeclared identifier is reported only once
XKBExtDev.c:445: error: for each function it appears in.)
XKBExtDev.c:450: error: `LedFeedbackClass' undeclared (first use in this function)
XKBExtDev.c: In function `_SizeMatches':
XKBExtDev.c:513: error: `KbdFeedbackClass' undeclared (first use in this function)
XKBExtDev.c: In function `_XkbSetDeviceInfoSize':
XKBExtDev.c:555: error: `KbdFeedbackClass' undeclared (first use in this function)
XKBExtDev.c:555: error: `LedFeedbackClass' undeclared (first use in this function)
make[3]: *** [XKBExtDev.lo] Error 1
make[3]: Leaving directory `/var/tmp/portage/libX11-1.0.3/work/libX11-1.0.3/src/xkb'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/var/tmp/portage/libX11-1.0.3/work/libX11-1.0.3/src'make[1]: *** [all] Error 2
make[1]: Leaving directory `/var/tmp/portage/libX11-1.0.3/work/libX11-1.0.3/src'make: *** [all-recursive] Error 1

!!! ERROR: x11-libs/libX11-1.0.3 failed.
Call stack:
  ebuild.sh, line 1545:   Called dyn_compile
  ebuild.sh, line 940:   Called src_compile
  ebuild.sh, line 1254:   Called x-modular_src_compile
  x-modular.eclass, line 327:   Called x-modular_src_make
  x-modular.eclass, line 322:   Called die

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