buildroot/package/bootgen/0001-bisonflex-Fix-build-on-machines-with-modern-flex.patch

From e7e341b7ba6fa9fb875718e8740b03c2041278e8 Mon Sep 17 00:00:00 2001
From: Neal Frager <neal.frager@amd.com>
Date: Mon, 2 Jun 2025 12:09:13 +0100
Subject: [PATCH] bisonflex: Fix build on machines with modern flex

With bootgen 2025.1, the directory structure was re-done.  In the process of
doing this, the source files in the bisonflex directory lost the fix below
which had been applied on an earlier version of bootgen:

Bootgen embeds an old version of flex, but uses the system include syntax
(#include <>) to reference it, causing conflicts on systems with the
development headers for a modern flex version installed, leading to build
issues like:

../bisonflex/bif.yy.cpp: In member function 'virtual int BIF::FlexScanner::yylex()':
../bisonflex/bif.yy.cpp:1608:18: error: no match for 'operator=' (operand types are 'std::istream' {aka 'std::basic_istream'} and 'std::istream*' {aka 'std::basic_istream*'})

Fix it by using normal local #include statements by:

sed -i 's/<FlexLexer.h>/"FlexLexer.h"/g' *

Upstream: submitted to AMD internal jira process

Signed-off-by: Neal Frager <neal.frager@amd.com>
---
 bisonflex/bif.yy.cpp        | 2 +-
 bisonflex/cmdoptions.yy.cpp | 2 +-
 bisonflex/reginit.yy.cpp    | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/bisonflex/bif.yy.cpp b/bisonflex/bif.yy.cpp
index 8d4d364..35f0aa5 100755
--- a/bisonflex/bif.yy.cpp
+++ b/bisonflex/bif.yy.cpp
@@ -379,7 +379,7 @@ typedef unsigned char YY_CHAR;
 
 #define yytext_ptr yytext
 
-#include <FlexLexer.h>
+#include "FlexLexer.h"
 
 int yyFlexLexer::yywrap() { return 1; }
 int yyFlexLexer::yylex()
diff --git a/bisonflex/cmdoptions.yy.cpp b/bisonflex/cmdoptions.yy.cpp
index 661d7f3..a76ac81 100755
--- a/bisonflex/cmdoptions.yy.cpp
+++ b/bisonflex/cmdoptions.yy.cpp
@@ -379,7 +379,7 @@ typedef unsigned char YY_CHAR;
 
 #define yytext_ptr yytext
 
-#include <FlexLexer.h>
+#include "FlexLexer.h"
 
 int yyFlexLexer::yywrap() { return 1; }
 int yyFlexLexer::yylex()
diff --git a/bisonflex/reginit.yy.cpp b/bisonflex/reginit.yy.cpp
index d830734..dede473 100755
--- a/bisonflex/reginit.yy.cpp
+++ b/bisonflex/reginit.yy.cpp
@@ -379,7 +379,7 @@ typedef unsigned char YY_CHAR;
 
 #define yytext_ptr yytext
 
-#include <FlexLexer.h>
+#include "FlexLexer.h"
 
 int yyFlexLexer::yywrap() { return 1; }
 int yyFlexLexer::yylex()
-- 
2.25.1