[Lldb-commits] [lldb] 6e1f2f5 - [lldb][windows] copy vcpkg runtime dlls (#200416)

[via lldb-commits]

Author: Charles Zablit
Date: 2026-06-02T11:57:43+01:00
New Revision: 6e1f2f513c84759e0d0727925dbb8c3a3e8b5199

URL: https://github.com/llvm/llvm-project/commit/6e1f2f513c84759e0d0727925dbb8c3a3e8b5199
DIFF: https://github.com/llvm/llvm-project/commit/6e1f2f513c84759e0d0727925dbb8c3a3e8b5199.diff

LOG: [lldb][windows] copy vcpkg runtime dlls (#200416)

Added: 
    

Modified: 
    lldb/bindings/python/CMakeLists.txt

Removed: 
    


################################################################################
diff  --git a/lldb/bindings/python/CMakeLists.txt b/lldb/bindings/python/CMakeLists.txt
index 2916d004a389e..e4f978ed80bc3 100644
--- a/lldb/bindings/python/CMakeLists.txt
+++ b/lldb/bindings/python/CMakeLists.txt
@@ -157,6 +157,18 @@ function(finish_swig_python swig_target lldb_python_bindings_dir lldb_python_tar
   create_relative_symlink(${swig_target} ${LIBLLDB_SYMLINK_DEST}
                           ${lldb_python_target_dir}/native/ ${LIBLLDB_SYMLINK_OUTPUT_FILE})
 
+  # On Windows, DLLs must reside alongside the .pyd extension so the loader finds them.
+  # Without this, importing _lldb fails at runtime when vcpkg-provided DLLs are not on PATH.
+  if(WIN32 AND DEFINED VCPKG_INSTALLED_DIR AND DEFINED VCPKG_TARGET_TRIPLET)
+    file(GLOB _lldb_vcpkg_runtime_dlls
+      "${VCPKG_INSTALLED_DIR}/${VCPKG_TARGET_TRIPLET}/bin/*.dll")
+    if(_lldb_vcpkg_runtime_dlls)
+      add_custom_command(TARGET ${swig_target} POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy_if_
diff erent
+          ${_lldb_vcpkg_runtime_dlls} "${lldb_python_target_dir}/native/"
+        COMMENT "Staging vcpkg runtime DLLs next to _lldb.pyd")
+    endif()
+  endif()
 
   if (NOT WIN32)
   add_dependencies(${swig_target} lldb-python-wrapper)