From 8dbdec0fae2913cb69cf3576f50996843975fb5f Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Tue, 4 Oct 2022 07:58:20 -0600
Subject: [PATCH] Run doxygen with threads.

---
 doc/doxygen/options.dox.in | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/doc/doxygen/options.dox.in b/doc/doxygen/options.dox.in
index 9e0271628e..c4e6e00744 100644
--- a/doc/doxygen/options.dox.in
+++ b/doc/doxygen/options.dox.in
@@ -77,6 +77,7 @@ EXAMPLE_RECURSIVE      = NO
 IMAGE_PATH             =
 INPUT_FILTER           = ${CMAKE_SOURCE_DIR}/doc/doxygen/scripts/filter.pl
 FILTER_SOURCE_FILES    = YES
+NUM_PROC_THREADS       = 0
 
 # Have some user defined commands that we can use in the documentation
 # and that expands to specific text. For some more transformations, see
@@ -290,6 +291,7 @@ DOT_TRANSPARENT        = NO
 GENERATE_LEGEND        = YES
 
 DOT_CLEANUP            = YES
+DOT_NUM_THREADS        = 0
 
 #---------------------------------------------------------------------------
 # Configuration::additions related to the search engine
-- 
2.39.5