--- llvm/clang/lib/Headers/CMakeLists.txt.orig	2026-01-16 10:36:34 UTC
+++ llvm/clang/lib/Headers/CMakeLists.txt
@@ -550,7 +550,7 @@ add_header_target("utility-resource-headers" ${utility
 add_header_target("windows-resource-headers" ${windows_only_files})
 add_header_target("utility-resource-headers" ${utility_files})
 
-get_clang_resource_dir(header_install_dir SUBDIR include)
+get_clang_resource_dir(header_install_dir SUBDIR include PREFIX cling)
 target_include_directories(clang-resource-headers INTERFACE
   $<BUILD_INTERFACE:${output_dir}>
   $<INSTALL_INTERFACE:${header_install_dir}>)