linux-arm编译报错m4: unrecognized option ‘--gnu‘

linux-arm编译libuv第一步执行./autogen.sh报错，网上说的是autoconf和automake没有安装。

结论：m4版本比较老，不支持某些新的特性导致执行./autogen.sh报错，更新到1.4.19版本重新执行成功

m4: unrecognized option ‘–gnu’
Try `m4 --help’ for more information.
autom4te: m4 failed with exit status: 1
aclocal: error: echo failed with exit status: 1
autoreconf: aclocal failed with exit status: 1

我一开始查看了两个工具版本都是比较新的

automake (GNU automake) 1.14
Copyright © 2013 Free Software Foundation, Inc.
License GPLv2+: GNU GPL version 2 or later http://gnu.org/licenses/gpl-2.0.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Tom Tromey tromey@redhat.com
and Alexandre Duret-Lutz adl@gnu.org.

autoconf (GNU Autoconf) 2.69
Copyright © 2012 Free Software Foundation, Inc.
License GPLv3+/Autoconf: GNU GPL version 3 or later
http://gnu.org/licenses/gpl.html, http://gnu.org/licenses/exceptions.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by David J. MacKenzie and Akim Demaille.

但是m4版本是4.9，版本比较老，尝试更新到4.19

m4 (GNU M4) 1.4.9
Copyright © 2007 Free Software Foundation, Inc.
License GPLv2+: GNU GPL version 2 or later http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Rene’ Seindal.

使用源码编译安装新版本的m4后，执行/autogen.sh脚本成功。

m4 (GNU M4) 1.4.19
Copyright © 2021 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later https://gnu.org/licenses/gpl.html.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

后续编译和安装没有出现问题。