From d2565bb11308f6cf98d838e828d9bcbe2d51e0e4 Mon Sep 17 00:00:00 2001
From: Alexandre Ganea <37383324+aganea@users.noreply.github.com>
Date: Thu, 1 Feb 2024 08:14:05 -0500
Subject: [PATCH] [openmp] On Windows, fix standalone cmake build (#80174)

This fixes: https://github.com/llvm/llvm-project/issues/80117
---
 openmp/cmake/HandleOpenMPOptions.cmake | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/openmp/cmake/HandleOpenMPOptions.cmake b/openmp/cmake/HandleOpenMPOptions.cmake
index 201aeabbd3df9c..71346201129b68 100644
--- a/openmp/cmake/HandleOpenMPOptions.cmake
+++ b/openmp/cmake/HandleOpenMPOptions.cmake
@@ -9,6 +9,14 @@ if (NOT COMMAND append_if)
   endfunction()
 endif()
 
+if (NOT COMMAND append)
+  function(append value)
+    foreach(variable ${ARGN})
+      set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
+    endforeach(variable)
+  endfunction()
+endif()
+
 # MSVC and clang-cl in compatibility mode map -Wall to -Weverything.
 # TODO: LLVM adds /W4 instead, check if that works for the OpenMP runtimes.
 if (NOT MSVC)