https://bugs.gentoo.org/706660 https://git.kernel.org/pub/scm/utils/dtc/dtc.git/patch/?id=0e9225eb0dfec51def612b928d2f1836b092bc7e From 0e9225eb0dfec51def612b928d2f1836b092bc7e Mon Sep 17 00:00:00 2001 From: Dirk Mueller Date: Tue, 14 Jan 2020 18:53:41 +0100 Subject: Remove redundant YYLOC global declaration gcc 10 will default to -fno-common, which causes this error at link time: (.text+0x0): multiple definition of `yylloc'; dtc-lexer.lex.o (symbol from plugin):(.text+0x0): first defined here This is because both dtc-lexer as well as dtc-parser define the same global symbol yyloc. Before with -fcommon those were merged into one defintion. The proper solution would be to to mark this as "extern", however that leads to: dtc-lexer.l:26:16: error: redundant redeclaration of 'yylloc' [-Werror=redundant-decls] 26 | extern YYLTYPE yylloc; | ^~~~~~ In file included from dtc-lexer.l:24: dtc-parser.tab.h:127:16: note: previous declaration of 'yylloc' was here 127 | extern YYLTYPE yylloc; | ^~~~~~ cc1: all warnings being treated as errors which means the declaration is completely redundant and can just be dropped. Signed-off-by: Dirk Mueller Message-Id: <20200114175341.2994-1-dmueller@suse.com> Signed-off-by: David Gibson --- dtc-lexer.l | 1 - 1 file changed, 1 deletion(-) --- a/dtc-lexer.l +++ b/dtc-lexer.l @@ -23,7 +23,6 @@ LINECOMMENT "//".*\n #include "srcpos.h" #include "dtc-parser.tab.h" -YYLTYPE yylloc; extern bool treesource_error; /* CAUTION: this will stop working if we ever use yyless() or yyunput() */ -- cgit 1.2-0.3.lf.el7