From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 9 Mar 2023 02:55:36 +0000 (-0700)
Subject: Always let doxygen see concepts.
X-Git-Tag: v9.5.0-rc1~491^2~2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dabffa2acb51f78853701f2757351152c2e7bafc;p=dealii.git

Always let doxygen see concepts.
---

diff --git a/include/deal.II/base/template_constraints.h b/include/deal.II/base/template_constraints.h
index 6e2995ef16..b1dab26d85 100644
--- a/include/deal.II/base/template_constraints.h
+++ b/include/deal.II/base/template_constraints.h
@@ -754,7 +754,7 @@ namespace LinearAlgebra
  */
 namespace concepts
 {
-#ifdef DEAL_II_HAVE_CXX20
+#if defined(DEAL_II_HAVE_CXX20) || defined(DOXYGEN)
   /**
    * A concept that tests that a combination of `dim` and `spacedim`
    * template arguments is valid. Specifically, we must have that