make[3]: Entering directory `/usr/local/src/libxml2-2.7.2/include/libxml'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/usr/local/src/libxml2-2.7.2/include/libxml'
make[3]: Entering directory `/usr/local/src/libxml2-2.7.2/include'
make[3]: Nothing to be done for `all-am'.
make[3]: Leaving directory `/usr/local/src/libxml2-2.7.2/include'
make[2]: Leaving directory `/usr/local/src/libxml2-2.7.2/include'
这是make的时候出现的错误，是什么原因，各位谁懂，麻烦告诉我一声，谢谢