编译xgl时出现错误，望高手帮忙解决

checking for MMX capable platform... yes
checking to see if we can install the Xorg server as root... yes
./configure: line 25737: XTRANS_CONNECTION_FLAGS: command not found
./configure: line 25740: XTRANS_SECURE_RPC_FLAGS: command not found
./configure: line 25937: XORG_CHECK_LINUXDOC: command not found
checking for LBXUTIL_TEST... checking for DRIPROTO... configure: error: Package requirements (xf86driproto) were not met.
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively you may set the DRIPROTO_CFLAGS and DRIPROTO_LIBS environment variables
to avoid the need to call pkg-config.  See the pkg-config man page for
more details.



在./configure时出现上面的错误信息，请问要如何解决～～～～～
我在好多国外论坛上搜过了～～～～找不到答案 …………