bcc: Fix build with LLVM/Clang 21

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/dynamic-layers/meta-python/recipes-devtools/bcc/bcc/0001-Fix-a-build-failure-with-clang21-5369.patch

@@ -0,0 +1,50 @@
+From 2e3997121af597f3a54d97505a38b7fdb9febae3 Mon Sep 17 00:00:00 2001
+From: yonghong-song <ys114321@gmail.com>
+Date: Mon, 14 Jul 2025 20:21:59 -0700
+Subject: [PATCH] Fix a build failure with clang21 (#5369)
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The build error message:
+  src/cc/frontends/clang/loader.cc:400:73: error: no matching function for
+   call to ‘clang::TextDiagnosticPrinter::TextDiagnosticPrinter(
+     llvm::raw_fd_ostream&, clang::DiagnosticOptions*)’
+  400 |   auto diag_client = new TextDiagnosticPrinter(llvm::errs(), &*diag_opts);
+      |                                                                         ^
+The llvm commit
+  https://github.com/llvm/llvm-project/pull/139584
+caused the build failure.
+
+Adjust the code properly and the error is fixed.
+
+Upstream-Status: Backport [https://github.com/iovisor/bcc/commit/8c5c96ad3beeed2fa827017f451a952306826974]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ src/cc/frontends/clang/loader.cc | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/src/cc/frontends/clang/loader.cc b/src/cc/frontends/clang/loader.cc
+index 07dc9d6a..6f8387aa 100644
+--- a/src/cc/frontends/clang/loader.cc
++++ b/src/cc/frontends/clang/loader.cc
+@@ -396,11 +396,19 @@ int ClangLoader::do_compile(
+                     flags_cstr_rem.end());
+ 
+   // set up the error reporting class
++#if LLVM_VERSION_MAJOR >= 21
++  DiagnosticOptions diag_opts;
++  auto diag_client = new TextDiagnosticPrinter(llvm::errs(), diag_opts);
++
++  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
++  DiagnosticsEngine diags(DiagID, diag_opts, diag_client);
++#else
+   IntrusiveRefCntPtr<DiagnosticOptions> diag_opts(new DiagnosticOptions());
+   auto diag_client = new TextDiagnosticPrinter(llvm::errs(), &*diag_opts);
+ 
+   IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+   DiagnosticsEngine diags(DiagID, &*diag_opts, diag_client);
++#endif
+ 
+   // set up the command line argument wrapper
+ 

meta-oe/dynamic-layers/meta-python/recipes-devtools/bcc/bcc_0.35.0.bb

@@ -21,6 +21,7 @@ RDEPENDS:${PN}-ptest = "kernel-devsrc packagegroup-core-buildessential cmake bas
 SRC_URI = "gitsm://github.com/iovisor/bcc;branch=master;protocol=https;tag=v${PV} \
            file://0001-CMakeLists.txt-override-the-PY_CMD_ESCAPED.patch \
            file://0001-Vendor-just-enough-extra-headers-to-allow-libbpf-to-.patch \
+           file://0001-Fix-a-build-failure-with-clang21-5369.patch \
            file://run-ptest \
            file://ptest_wrapper.sh \
            file://fix_for_memleak.patch \