utilseq.h:92:30: error: ‘Iefp’ is not a class or namespace

001、问题， make编译报错如下：

utilseq.h:92:30: error: ‘Iefp’ is not a class or namespace

002、感觉像是c++版本低造成的

测试一下，将gcc编译器有4.8 升级到 11， 问题解决。

升级方法：https://www.cnblogs.com/liujiaxin2018/p/16744442.html

(base) [root@pc1 src]# gcc --version
gcc (GCC) 11.2.1 20220127 (Red Hat 11.2.1-9)
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

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