/usr/include/sys/ipc.h:25:3: warning: #warning "Files using this header must be compiled with _SVID_SOURCE or _XOPEN_SOURCE"
Font.c:50:40: error: X11/extensions/xf86bigfstr.h: No such file or directory
Font.c: In function '_XF86BigfontCodes':
Font.c:371: error: 'XF86BIGFONTNAME' undeclared (first use in this function)
Font.c:371: error: (Each undeclared identifier is reported only once
Font.c:371: error: for each function it appears in.)
Font.c:387: error: 'xXF86BigfontQueryVersionReply' undeclared (first use in this function)
Font.c:387: error: expected ';' before 'reply'
Font.c:388: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
Font.c:388: error: 'req' undeclared (first use in this function)
Font.c:392: error: 'xXF86BigfontQueryVersionReq' undeclared (first use in this function)
Font.c:392: error: expected expression before ')' token
Font.c:392: error: 'X_XF86BigfontQueryVersion' undeclared (first use in this function)
Font.c:392: error: 'sz_xXF86BigfontQueryVersionReq' undeclared (first use in this function)
Font.c:396: error: 'reply' undeclared (first use in this function)
Font.c:397: error: 'sz_xXF86BigfontQueryVersionReply' undeclared (first use in this function)
Font.c: In function '_XF86BigfontQueryFont':
Font.c:441: error: 'xXF86BigfontQueryFontReply' undeclared (first use in this function)
Font.c:441: error: expected ';' before 'reply'
Font.c:442: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
Font.c:442: error: 'req' undeclared (first use in this function)
Font.c:462: error: 'sz_xXF86BigfontQueryFontReq' undeclared (first use in this function)
Font.c:462: error: 'xXF86BigfontQueryFontReq' undeclared (first use in this function)
Font.c:462: error: expected expression before ')' token
Font.c:462: error: 'X_XF86BigfontQueryFont' undeclared (first use in this function)
Font.c:466: error: 'XF86Bigfont_CAP_LocalShm' undeclared (first use in this function)
Font.c:467: error: 'XF86Bigfont_FLAGS_Shm' undeclared (first use in this function)
Font.c:483: error: 'reply' undeclared (first use in this function)
Font.c:484: error: 'sz_xXF86BigfontQueryFontReply' undeclared (first use in this function)
Font.c:649: error: 'ext' undeclared (first use in this function)
make[3]: *** [Font.lo] Error 1
make[3]: Leaving directory `/var/tmp/portage/libX11-1.0.3/work/libX11-1.0.3/src'
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 1546:   Called dyn_compile
  ebuild.sh, line 937:   Called src_compile
  ebuild.sh, line 1255:   Called x-modular_src_compile
  x-modular.eclass, line 331:   Called x-modular_src_make
  x-modular.eclass, line 326:   Called die

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