xorg-x11的PAM问题

wxw

升级系统时， xorg-x11添加PAM后经过很长的编译时间，出现下列出错信息：


/usr/include/linux/posix_types.h:38: error: ISO C forbids data definition with no type or storage class
make[7]: *** [lnx_KbdMap.o] Error 1
make[7]: Leaving directory `/var/tmp/portage/xorg-x11-6.8.2-r7/work/xc/programs/Xserver/hw/xfree86/os-support/linux'
make[6]: *** [linux] Error 2
make[6]: Leaving directory `/var/tmp/portage/xorg-x11-6.8.2-r7/work/xc/programs/Xserver/hw/xfree86/os-support'
make[5]: *** [all] Error 2
make[5]: Leaving directory `/var/tmp/portage/xorg-x11-6.8.2-r7/work/xc/programs/Xserver/hw/xfree86'
make[4]: *** [hw/xfree86] Error 2
make[4]: Leaving directory `/var/tmp/portage/xorg-x11-6.8.2-r7/work/xc/programs/Xserver'
make[3]: *** [all] Error 2
make[3]: Leaving directory `/var/tmp/portage/xorg-x11-6.8.2-r7/work/xc/programs'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/var/tmp/portage/xorg-x11-6.8.2-r7/work/xc'
make[1]: *** [World] Error 2
make[1]: Leaving directory `/var/tmp/portage/xorg-x11-6.8.2-r7/work/xc'
make: *** [World] Error 2

请问如何处理？

谢谢！