From 06400a0142af8297b5d39b8f34a7c59db6f9910c Mon Sep 17 00:00:00 2001
From: Louis Dionne <ldionne.2@gmail.com>
Date: Fri, 6 May 2022 15:43:18 -0400
Subject: [runtimes] Generalize how we reorder projects

This way, we could use it for LLVM_ENABLE_PROJECTS too if desired.

Differential Revision: https://reviews.llvm.org/D125121
---
 cmake/Modules/SortSubset.cmake | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 cmake/Modules/SortSubset.cmake

(limited to 'cmake')

diff --git a/cmake/Modules/SortSubset.cmake b/cmake/Modules/SortSubset.cmake
new file mode 100644
index 000000000000..af65c27e715b
--- /dev/null
+++ b/cmake/Modules/SortSubset.cmake
@@ -0,0 +1,25 @@
+# Sort a subset of a list according to the ordering in the full list.
+#
+# Given a list and a subset of that list, this function sorts the subset
+# according to the order in the full list, and returns that in the given
+# output variable.
+#
+# full_list:
+#   The list containing the desired order of elements in the sub-list.
+#
+# sub_list:
+#   A subset of the elements in `full_list`. Those elements will be sorted
+#   according to the order in `full_list`.
+#
+# out_var:
+#   A variable to store the resulting sorted sub-list in.
+function(sort_subset full_list sub_list out_var)
+  set(result "${full_list}")
+  foreach(project IN LISTS full_list)
+    if (NOT project IN_LIST sub_list)
+      list(REMOVE_ITEM result ${project})
+    endif()
+  endforeach()
+
+  set(${out_var} "${result}" PARENT_SCOPE)
+endfunction()
-- 
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