[Buildroot] [PATCH] boot/edk2: fix build with gcc 15

[Vincent Stehlé]

The edk2 package fails to build with gcc 15, with the following error:

  EfiRom.c:78:17: error: assignment discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]

Cherry-pick one patch from edk2-stable202602 to fix this.

This can be verified with the tests.boot.test_edk2 python tests.

Signed-off-by: Vincent Stehlé <vincent.stehle at arm.com>
Cc: Dick Olsson <hi at senzilla.io>
---
 ...aseTools-EfiRom-fix-compiler-warning.patch | 46 +++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 boot/edk2/0001-BaseTools-EfiRom-fix-compiler-warning.patch

diff --git a/boot/edk2/0001-BaseTools-EfiRom-fix-compiler-warning.patch b/boot/edk2/0001-BaseTools-EfiRom-fix-compiler-warning.patch
new file mode 100644
index 0000000000..c1e688cfe0
--- /dev/null
+++ b/boot/edk2/0001-BaseTools-EfiRom-fix-compiler-warning.patch
@@ -0,0 +1,46 @@
+From 9af06ef3cbb052b142f9660c2c01e7aeb401300c Mon Sep 17 00:00:00 2001
+From: Gerd Hoffmann <kraxel at redhat.com>
+Date: Mon, 8 Dec 2025 10:28:50 +0100
+Subject: [PATCH] BaseTools/EfiRom: fix compiler warning
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+New warning after updating gcc:
+
+EfiRom.c: In function ‘main’:
+EfiRom.c:78:17: error: assignment discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
+
+The assigned value is not used, so fix the warning by just removing it.
+
+Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
+Upstream: https://github.com/tianocore/edk2/commit/9af06ef3cbb052b142f9660c2c01e7aeb401300c
+Signed-off-by: Vincent Stehlé <vincent.stehle at arm.com>
+---
+ BaseTools/Source/C/EfiRom/EfiRom.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/BaseTools/Source/C/EfiRom/EfiRom.c b/BaseTools/Source/C/EfiRom/EfiRom.c
+index fa7bf0e62e..6e903b3504 100644
+--- a/BaseTools/Source/C/EfiRom/EfiRom.c
++++ b/BaseTools/Source/C/EfiRom/EfiRom.c
+@@ -44,7 +44,6 @@ Returns:
+   FILE_LIST *FList;
+   UINT32    TotalSize;
+   UINT32    Size;
+-  CHAR8     *Ptr0;
+ 
+   SetUtilityName(UTILITY_NAME);
+ 
+@@ -75,7 +74,7 @@ Returns:
+   //
+   if (mOptions.DumpOption == 1) {
+     if (mOptions.FileList != NULL) {
+-      if ((Ptr0 = strstr ((CONST CHAR8 *) mOptions.FileList->FileName, DEFAULT_OUTPUT_EXTENSION)) != NULL) {
++      if (strstr ((CONST CHAR8 *) mOptions.FileList->FileName, DEFAULT_OUTPUT_EXTENSION) != NULL) {
+         DumpImage (mOptions.FileList);
+         goto BailOut;
+       } else {
+-- 
+2.53.0
+
-- 
2.53.0