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package/bcc: add upstream patch to fix build with llvm >= 21

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Since Buildroot commit [1] "package/llvm-project: bump to version
21.1.4", bcc is failing at compilation time.

This commit adds an upstream patch to fix this issue.

[1] d6a7c02263

Signed-off-by: Julien Olivain <ju.o@free.fr>
This commit is contained in:
Julien Olivain
2025-11-04 19:25:39 +01:00
parent d6a7c02263
commit 39e4953be7
1 changed files with 53 additions and 0 deletions
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53
package/bcc/0001-Fix-a-build-failure-with-clang21-5369.patch Normal file
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@@ -0,0 +1,53 @@
From 051be0c987622683c75b335bda16b9b61fc67fa4 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: https://github.com/iovisor/bcc/commit/8c5c96ad3beeed2fa827017f451a952306826974
Signed-off-by: Julien Olivain <ju.o@free.fr>
---
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
--
2.51.1