前文：
https://quantum6.blog.csdn.net/article/details/119785631
看到介绍使用：
autoreconf -vif
然后出现这个错误。既然缺少，找一下，原来在下级目录libffi中有，于是：
$ cd libffi $ autoreconf -vif autoreconf: Entering directory `.' autoreconf: configure.ac: not using Gettext autoreconf: running: aclocal --force -I m4 autoreconf: configure.ac: tracing autoreconf: running: libtoolize --copy --force libtoolize: putting auxiliary files in '.'. libtoolize: copying file './ltmain.sh' libtoolize: putting macros in AC_CONFIG_MACR ……
