grub_script.yy.c：2354：13：错误：'yy_fatal_error'已定义但未使用

Question

构建最新的grub2（2.00）时出现此错误。

我试图在Makefile加入-Wno-unused-function既HOST_CFLAGS，HOST_CPPFLAGS，TARGET_CPPFLAGS和TARGET_CFLAGS。我甚至尝试删除该功能，而make正在运行！

不幸的是，错误依然存在。

Answer 1

你见过this？

The latest flex makes the GRUB-2.00 build fail. I can work around the issues with --disable-werror , but grub-core/script/yylex.l causes two warnings that do not work with -Werror.

./grub-core/script/yylex.l: At top level: grub_script.yy.c:2351:13: error: 'yy_fatal_error' defined but not used

This can be fixed by removing #define YY_FATAL_ERROR(msg) in yylex.l .

但是，根据this后这似乎已经修复。

从网络上的信息判断，您要么切换到grub 2.02，要么尝试更旧版本的flex。