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authorLuis Araneda <luaraneda@gmail.com>2020-08-02 19:34:42 -0400
committerChristian Lamparter <chunkeey@gmail.com>2020-12-13 16:12:45 +0100
commit8b870418f18d86761247633e57560ffa1c2485d0 (patch)
tree879a978bf398bee6e506238a77ecf4141fa635ba
parentb2d48c1dfe81911c563f0a745a2408b438db9bc4 (diff)
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uboot-zynq: fix dtc compilation on host gcc 10
gcc 10 defaults to -fno-common, which causes an error when linking. Back-port the following Linux kernel commit to fix it: e33a814e772c (scripts/dtc: Remove redundant YYLOC global declaration) Tested on an Arch Linux host with gcc 10.1.0 Signed-off-by: Luis Araneda <luaraneda@gmail.com>
-rw-r--r--package/boot/uboot-zynq/patches/010-fix_dtc_compilation_on_host_gcc10.patch48
1 files changed, 48 insertions, 0 deletions
diff --git a/package/boot/uboot-zynq/patches/010-fix_dtc_compilation_on_host_gcc10.patch b/package/boot/uboot-zynq/patches/010-fix_dtc_compilation_on_host_gcc10.patch
new file mode 100644
index 0000000000..a4080e4ea9
--- /dev/null
+++ b/package/boot/uboot-zynq/patches/010-fix_dtc_compilation_on_host_gcc10.patch
@@ -0,0 +1,48 @@
+From e33a814e772cdc36436c8c188d8c42d019fda639 Mon Sep 17 00:00:00 2001
+From: Dirk Mueller <dmueller@suse.com>
+Date: Tue, 14 Jan 2020 18:53:41 +0100
+Subject: [PATCH] scripts/dtc: 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@suse.com>
+Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
+[robh: cherry-pick from upstream]
+Cc: stable@vger.kernel.org
+Signed-off-by: Rob Herring <robh@kernel.org>
+---
+ scripts/dtc/dtc-lexer.l | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/scripts/dtc/dtc-lexer.l b/scripts/dtc/dtc-lexer.l
+index 5c6c3fd557d7f..b3b7270300de5 100644
+--- a/scripts/dtc/dtc-lexer.l
++++ b/scripts/dtc/dtc-lexer.l
+@@ -38,7 +38,6 @@ 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() */