autoreconf:
autoreconf -ifv
--install copy missing auxiliary files
--force consider all files obsolete
tarball中一般会有boostrap.sh或autogen.sh,其会调用autoreconf,autoreconf也可能被Makefile调用,只有对configure.ac和Makefile.am进行改变的,需要autoreconf.
http://blog.chinaunix.net/uid-17188120-id-5794379.html
https://blog.csdn.net/u010020404/article/details/82770848
原文：https://www.cnblogs.com/dissipate/p/13198847.html