gcc 10 fix

0001-Remove-redundant-YYLOC-global-declaration.patch

@@ -0,0 +1,48 @@
+From 42377121da0d440b099cf06dc2dd8aebadff0d61 Mon Sep 17 00:00:00 2001
+From: Peter Robinson <pbrobinson@gmail.com>
+Date: Thu, 30 Jan 2020 17:10:42 +0000
+Subject: [PATCH] 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 <dmueller@xxxxxxxx>
+Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
+---
+ dtc-lexer.l | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/dtc-lexer.l b/dtc-lexer.l
+index 5c6c3fd..b3b7270 100644
+--- 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() */
+-- 
+2.24.1
+

dtc.spec

@@ -1,11 +1,12 @@
 Name:          dtc
 Version:       1.5.1
-Release:       3%{?dist}
+Release:       4%{?dist}
 Summary:       Device Tree Compiler
 License:       GPLv2+
 URL:           https://devicetree.org/
 
 Source0:       https://www.kernel.org/pub/software/utils/%{name}/%{name}-%{version}.tar.xz
+Patch1:        0001-Remove-redundant-YYLOC-global-declaration.patch
 
 BuildRequires: gcc make
 BuildRequires: flex bison swig
@@ -87,6 +88,9 @@ rm -f $RPM_BUILD_ROOT/%{_bindir}/ftdump
 %{python3_sitearch}/*
 
 %changelog
+* Thu Jan 30 2020 Peter Robinson <pbrobinson@fedoraproject.org> 1.5.1-4
+- Upstream patch to fix gcc-10 build
+
 * Tue Jan 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.5.1-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild