From 91be62ae2553c462e1308f5160b9673962986803 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Kl=C3=B6tzke?= <jan@kloetzke.net>
Date: Thu, 18 Dec 2025 07:57:40 +0100
Subject: [PATCH 1/2] devel::llvm: enable RTTI for host-tools too

The host-tools llvm variant has to be built the same way as the "real"
cross-compiled variant. Otherwise, llvm-config will report a wrong value
for "llvm-config --has-rtti".
---
 recipes/devel/llvm.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/recipes/devel/llvm.yaml b/recipes/devel/llvm.yaml
index c41ebc4..a7abc8f 100644
--- a/recipes/devel/llvm.yaml
+++ b/recipes/devel/llvm.yaml
@@ -58,6 +58,7 @@ multiPackage:
         buildScript: |
             cmakeBuild $1/llvm \
                 -DCMAKE_BUILD_TYPE=Release                        \
+                -DLLVM_ENABLE_RTTI=ON                             \
                 -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra"  \
                 -DLLVM_TARGETS_TO_BUILD="${LLVM_TARGETS}"         \
                 -DLLVM_INCLUDE_BENCHMARKS=OFF                     \

From b52b79fd0ed73bdc05defc169f70eaae38a92e71 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Kl=C3=B6tzke?= <jan@kloetzke.net>
Date: Thu, 18 Dec 2025 07:59:45 +0100
Subject: [PATCH 2/2] devel::llvm: use correct llvm-config when cross compiling

When llvm is cross-compiled, the llvm-config executable is built for
the target architecture. We pass a copy of llvm-config in
devel::llvm-libs-dev which apparently requires a version that can be
executed on the build machine. Use the one from the host-tool package
unless llvm is not cross compiled.
---
 recipes/devel/llvm.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/recipes/devel/llvm.yaml b/recipes/devel/llvm.yaml
index a7abc8f..b42c665 100644
--- a/recipes/devel/llvm.yaml
+++ b/recipes/devel/llvm.yaml
@@ -283,6 +283,13 @@ multiPackage:
                                 /usr/ /usr/lib/ /usr/lib/{clang,llvm}/"***" \
                                 /usr/bin/ /usr/bin/llvm-config
 
+                            # If we're cross-compiling, we need to take
+                            # llvm-config from the host-tools package so that
+                            # it can be executed at build time.
+                            if [[ ${BOB_TOOL_PATHS[clang-host]:+true} ]] ; then
+                                cp ${BOB_TOOL_PATHS[clang-host]}/llvm-config usr/bin/
+                            fi
+
                             # Add some wrapper scripts for all executables,
                             # except llvm-config. The CMake exported targets
                             # expect them relative to them and check this!