1 files changed, 98 insertions, 0 deletions
diff --git a/build/build-clang/llvmorg-17-init-4170-g5c602c46b1ef.patch b/build/build-clang/llvmorg-17-init-4170-g5c602c46b1ef.patch
new file mode 100644
index 0000000000..c1c76064b5
--- /dev/null
+++ b/build/build-clang/llvmorg-17-init-4170-g5c602c46b1ef.patch
@@ -0,0 +1,98 @@
+From 39e048e60ae2153f7621b7d1a1949dcb69778fa1 Mon Sep 17 00:00:00 2001
+From: Michael Platings <michael.platings@arm.com>
+Date: Mon, 6 Mar 2023 22:53:54 +0000
+Subject: [PATCH] Use LLVM_USE_SYMLINKS option in install_symlink
+
+The change to potentially use symlinks on Windows was added in
+https://reviews.llvm.org/D99170.
+
+LLVM_USE_SYMLINKS was added more recently in
+https://reviews.llvm.org/D135578 and allows specifying at configure time
+whether or not symlinks should be created. The benefit of using this
+option is it allows building the package on a symlink-capable Windows
+machine with symlinks disabled so that the resulting package can be used
+on a Windows machine that doesn't support symlinks.
+
+Differential Revision: https://reviews.llvm.org/D145443
+---
+ llvm/cmake/modules/AddLLVM.cmake            | 16 ++++++++++++++--
+ llvm/cmake/modules/LLVMInstallSymlink.cmake | 14 ++++++--------
+ 2 files changed, 20 insertions(+), 10 deletions(-)
+
+diff --git a/llvm/cmake/modules/AddLLVM.cmake b/llvm/cmake/modules/AddLLVM.cmake
+index 76695e69e740..fa23bf1d883a 100644
+--- a/llvm/cmake/modules/AddLLVM.cmake
++++ b/llvm/cmake/modules/AddLLVM.cmake
+@@ -2008,13 +2008,19 @@ function(llvm_install_library_symlink name dest type)
+   set(full_name ${CMAKE_${type}_LIBRARY_PREFIX}${name}${CMAKE_${type}_LIBRARY_SUFFIX})
+   set(full_dest ${CMAKE_${type}_LIBRARY_PREFIX}${dest}${CMAKE_${type}_LIBRARY_SUFFIX})
+ 
++  if(LLVM_USE_SYMLINKS)
++    set(LLVM_LINK_OR_COPY create_symlink)
++  else()
++    set(LLVM_LINK_OR_COPY copy)
++  endif()
++
+   set(output_dir lib${LLVM_LIBDIR_SUFFIX})
+   if(WIN32 AND "${type}" STREQUAL "SHARED")
+     set(output_dir "${CMAKE_INSTALL_BINDIR}")
+   endif()
+ 
+   install(SCRIPT ${INSTALL_SYMLINK}
+-          CODE "install_symlink(\"${full_name}\" \"${full_dest}\" \"${output_dir}\")"
++          CODE "install_symlink(\"${full_name}\" \"${full_dest}\" \"${output_dir}\" \"${LLVM_LINK_OR_COPY}\")"
+           COMPONENT ${component})
+ 
+ endfunction()
+@@ -2049,10 +2055,16 @@ function(llvm_install_symlink project name dest)
+     set(full_dest llvm${CMAKE_EXECUTABLE_SUFFIX})
+   endif()
+ 
++  if(LLVM_USE_SYMLINKS)
++    set(LLVM_LINK_OR_COPY create_symlink)
++  else()
++    set(LLVM_LINK_OR_COPY copy)
++  endif()
++
+   set(output_dir "${${project}_TOOLS_INSTALL_DIR}")
+ 
+   install(SCRIPT ${INSTALL_SYMLINK}
+-          CODE "install_symlink(\"${full_name}\" \"${full_dest}\" \"${output_dir}\")"
++          CODE "install_symlink(\"${full_name}\" \"${full_dest}\" \"${output_dir}\" \"${LLVM_LINK_OR_COPY}\")"
+           COMPONENT ${component})
+ 
+   if (NOT LLVM_ENABLE_IDE AND NOT ARG_ALWAYS_GENERATE)
+diff --git a/llvm/cmake/modules/LLVMInstallSymlink.cmake b/llvm/cmake/modules/LLVMInstallSymlink.cmake
+index e9be04aceb3d..fb61265543d1 100644
+--- a/llvm/cmake/modules/LLVMInstallSymlink.cmake
++++ b/llvm/cmake/modules/LLVMInstallSymlink.cmake
+@@ -4,7 +4,10 @@
+ set(CMAKE_INSTALL_LIBDIR "lib")
+ include(GNUInstallDirs)
+ 
+-function(install_symlink name target outdir)
++function(install_symlink name target outdir link_or_copy)
++  # link_or_copy is the "command" to pass to cmake -E.
++  # It should be either "create_symlink" or "copy".
++
+   set(DESTDIR $ENV{DESTDIR})
+   if(NOT IS_ABSOLUTE "${outdir}")
+     set(outdir "${CMAKE_INSTALL_PREFIX}/${outdir}")
+@@ -14,12 +17,7 @@ function(install_symlink name target outdir)
+   message(STATUS "Creating ${name}")
+ 
+   execute_process(
+-    COMMAND "${CMAKE_COMMAND}" -E create_symlink "${target}" "${name}"
+-    WORKING_DIRECTORY "${outdir}" ERROR_VARIABLE has_err)
+-  if(CMAKE_HOST_WIN32 AND has_err)
+-    execute_process(
+-      COMMAND "${CMAKE_COMMAND}" -E copy "${target}" "${name}"
+-      WORKING_DIRECTORY "${outdir}")
+-  endif()
++    COMMAND "${CMAKE_COMMAND}" -E ${link_or_copy} "${target}" "${name}"
++    WORKING_DIRECTORY "${outdir}")
+ 
+ endfunction()
+-- 
+2.39.0.1.g6739ec1790
+