# --- T2-COPYRIGHT-BEGIN --- # t2/package/*/mesa/hotfix-llvm-21.patch # Copyright (C) 2025 The T2 SDE Project # SPDX-License-Identifier: GPL-2.0 or patched project license # --- T2-COPYRIGHT-END --- From eca19331d94005485de5246cfa87a21621486cd8 Mon Sep 17 00:00:00 2001 From: no92 Date: Wed, 27 Aug 2025 16:02:31 +0200 Subject: [PATCH] gallivm: support LLVM 21 LLVM PR#146819 changed the signature of `setObjectLinkingLayerCreator`, dropping the Triple argument. The PR was first included in the LLVM 21 series, and the new signature is gated behind a version check for that. `LLVMOrcThreadSafeContextGetContext` was removed in LLVM commit b18e5b6, and the ORC examples in the LLVM tree seem to just create a context instead, which we replicate here. With this commit, mesa successfully builds the llvmpipe gallium driver on riscv64 with LLVM 21.1.0. Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/13785 Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/13852 Reviewed-by: David Heidelberg --- src/gallium/auxiliary/gallivm/lp_bld_init_orc.cpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/gallium/auxiliary/gallivm/lp_bld_init_orc.cpp b/src/gallium/auxiliary/gallivm/lp_bld_init_orc.cpp index 3d2b8cf81bc0c..0be69b02b6eef 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_init_orc.cpp +++ b/src/gallium/auxiliary/gallivm/lp_bld_init_orc.cpp @@ -340,7 +340,12 @@ LPJit::LPJit() :jit_dylib_count(0) { .setJITTargetMachineBuilder(std::move(JTMB)) #ifdef USE_JITLINK .setObjectLinkingLayerCreator( +#if LLVM_VERSION_MAJOR >= 21 + /* LLVM 21 removed the Triple argument */ + [&](ExecutionSession &ES) { +#else [&](ExecutionSession &ES, const llvm::Triple &TT) { +#endif return std::make_unique( ES, ExitOnErr(llvm::jitlink::InProcessMemoryManager::Create())); }) @@ -552,7 +557,7 @@ init_gallivm_state(struct gallivm_state *gallivm, const char *name, gallivm->cache = cache; gallivm->_ts_context = context->ref; - gallivm->context = LLVMOrcThreadSafeContextGetContext(context->ref); + gallivm->context = LLVMContextCreate(); gallivm->module_name = LPJit::get_unique_name(name); gallivm->module = LLVMModuleCreateWithNameInContext(gallivm->module_name, -- GitLab