elfutils: fix unused variable BUFFER_SIZE

Fix build break with clang

(From OE-Core rev: 760292c23213476169116b8608ca4119b99e6ff8)

Signed-off-by: Jose Quaresma <jose.quaresma@foundries.io>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 37 insertions, 0 deletions

diff --git a/meta/recipes-devtools/elfutils/elfutils_0.191.bb b/meta/recipes-devtools/elfutils/elfutils_0.191.bb
index c5c1542b05..c4d872430b 100644
--- a/meta/recipes-devtools/elfutils/elfutils_0.191.bb
+++ b/meta/recipes-devtools/elfutils/elfutils_0.191.bb
@@ -22,6 +22,7 @@ SRC_URI = "https://sourceware.org/elfutils/ftp/${PV}/${BP}.tar.bz2 \
            file://ptest.patch \
            file://0001-tests-Makefile.am-compile-test_nlist-with-standard-C.patch \
            file://0001-debuginfod-Remove-unused-variable.patch \
+           file://0001-srcfiles-fix-unused-variable-BUFFER_SIZE.patch \
            "
 SRC_URI:append:libc-musl = " \
            file://0003-musl-utils.patch \
diff --git a/meta/recipes-devtools/elfutils/files/0001-srcfiles-fix-unused-variable-BUFFER_SIZE.patch b/meta/recipes-devtools/elfutils/files/0001-srcfiles-fix-unused-variable-BUFFER_SIZE.patch
new file mode 100644
index 0000000000..b3032327a2
--- /dev/null
+++ b/meta/recipes-devtools/elfutils/files/0001-srcfiles-fix-unused-variable-BUFFER_SIZE.patch
@@ -0,0 +1,36 @@
+From db51a55a8e3811d19265bf12d2ff715c6cf558b4 Mon Sep 17 00:00:00 2001
+From: Jose Quaresma <jose.quaresma@foundries.io>
+Date: Tue, 19 Mar 2024 10:17:59 +0000
+Subject: [PATCH] srcfiles: fix unused variable BUFFER_SIZE
+
+The const variable BUFFER_SIZE is used only on the zip_files
+function witch is only available with LIBARCHIVE.
+
+| ../../elfutils-0.191/src/srcfiles.cxx:81:18: error: unused variable 'BUFFER_SIZE' [-Werror,-Wunused-const-variable]
+|    81 | constexpr size_t BUFFER_SIZE = 8192;
+|       |                  ^~~~~~~~~~~
+
+Upstream-Status: Backport [https://sourceware.org/git/?p=elfutils.git;a=commitdiff;h=ef8a4b841aaf26326b8961a651dbe915d54d23e7]
+
+Signed-off-by: Jose Quaresma <jose.quaresma@foundries.io>
+---
+ src/srcfiles.cxx | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/srcfiles.cxx b/src/srcfiles.cxx
+index 892737cc..09d50f8d 100644
+--- a/src/srcfiles.cxx
++++ b/src/srcfiles.cxx
+@@ -78,7 +78,9 @@ ARGP_PROGRAM_VERSION_HOOK_DEF = print_version;
+ /* Bug report address.  */
+ ARGP_PROGRAM_BUG_ADDRESS_DEF = PACKAGE_BUGREPORT;
+ 
++#ifdef HAVE_LIBARCHIVE
+ constexpr size_t BUFFER_SIZE = 8192;
++#endif
+ 
+ /* Definitions of arguments for argp functions.  */
+ static const struct argp_option options[] =
+-- 
+2.44.0
+