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bcc: Fix build with LLVM 23

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LLVM 23 changed the MCContext constructor to take MCAsmInfo,
MCRegisterInfo and MCSubtargetInfo by reference rather than by pointer,
so bcc no longer builds:

  src/cc/bcc_debug.cc:151:68: error: no matching function for call to
  'llvm::MCContext::MCContext(...)'

Backport the upstream fix. It is guarded on LLVM_VERSION_MAJOR so older
Clang keeps working. There is no release carrying it yet; v0.37.0 is
still the newest tag.

Co-authored-by: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com>
Signed-off-by: Sunil Dora <sunilkumar.dora@windriver.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
This commit is contained in:
Sunil Dora
2026-08-29 10:41:47 -07:00
committed by Khem Raj
co-authored by Deepesh Varatharajan
parent 3e3ed6643b
commit 6e73c01ca2
2 changed files with 37 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta-oe/dynamic-layers/meta-python/recipes-devtools/bcc/bcc/0001-src-cc-Fix-MCContext-constructor-for-LLVM-23.patch
+36
View File
@@ -0,0 +1,36 @@
From dad0db93fd0f443b2a4f43bc2f23c621c9202516 Mon Sep 17 00:00:00 2001
From: Viktor Malik <viktor.malik@gmail.com>
Date: Thu, 13 Aug 2026 08:22:00 +0200
Subject: [PATCH] src/cc: Fix MCContext constructor for LLVM 23
Two LLVM 23 patches [1,2] changed the MCContext constructor to take
MCAsmInfo, MCRegisterInfo, and MCSubtargetInfo by a reference rather
than by a pointer. Reflect the change in call of the constructor.
[1] https://github.com/llvm/llvm-project/commit/13e98d834101efd1794cdd026377c508293ee21b
[2] https://github.com/llvm/llvm-project/commit/d50631faad3003e73589528c83d3bbbad7ba72f1
Upstream-Status: Backport [https://github.com/iovisor/bcc/commit/dad0db93fd0f]
Signed-off-by: Viktor Malik <viktor.malik@gmail.com>
Signed-off-by: Sunil Dora <sunilkumar.dora@windriver.com>
---
src/cc/bcc_debug.cc | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/cc/bcc_debug.cc b/src/cc/bcc_debug.cc
index 2e53c44d4778..0812c4abc788 100644
--- a/src/cc/bcc_debug.cc
+++ b/src/cc/bcc_debug.cc
@@ -148,7 +148,11 @@ void SourceDebugger::dump() {
T->createMCSubtargetInfo(TripleArg, "", ""));
MCObjectFileInfo MOFI;
#if LLVM_VERSION_MAJOR >= 13
+#if LLVM_VERSION_MAJOR >= 23
+ MCContext Ctx(TheTriple, *MAI, *MRI, *STI, nullptr);
+#else
MCContext Ctx(TheTriple, MAI.get(), MRI.get(), STI.get(), nullptr);
+#endif
Ctx.setObjectFileInfo(&MOFI);
MOFI.initMCObjectFileInfo(Ctx, false, false);
#else
meta-oe/dynamic-layers/meta-python/recipes-devtools/bcc/bcc_0.37.0.bb
+1
View File
@@ -23,6 +23,7 @@ SRC_URI = "gitsm://github.com/iovisor/bcc;branch=master;protocol=https;lfs=0;tag
file://0001-CMakeLists.txt-override-the-PY_CMD_ESCAPED.patch \
file://0001-Vendor-just-enough-extra-headers-to-allow-libbpf-to-.patch \
file://0001-tests-cc-Allow-overriding-the-runtime-location-of-te.patch \
file://0001-src-cc-Fix-MCContext-constructor-for-LLVM-23.patch \
file://run-ptest \
file://ptest_wrapper.sh \
"