From: Matthias Maier <tamiko@43-1.org>
Date: Sat, 20 Feb 2021 00:19:15 +0000 (-0600)
Subject: Sundials: Mark function as inline
X-Git-Tag: v9.3.0-rc1~432^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d0b1b276b7249237b01a55ca1273dfbe01c775b0;p=dealii.git

Sundials: Mark function as inline

These two functions have a complete definition in a header file that
gets including in multiple compilation units. In this case we have to
mark these functions as "inline" so that the compiler emits a so-called
"weak symbol". Otherwise linkage will fail due to multiply defined
symbols.
---

diff --git a/include/deal.II/sundials/sunlinsol_newempty.h b/include/deal.II/sundials/sunlinsol_newempty.h
index b992d66c23..d0d1fb1484 100644
--- a/include/deal.II/sundials/sunlinsol_newempty.h
+++ b/include/deal.II/sundials/sunlinsol_newempty.h
@@ -41,7 +41,7 @@ namespace SUNDIALS
      * Create a new SUNLinearSolver structure without any content and
      * operations set to `nullptr`.
      */
-    SUNLinearSolver
+    inline SUNLinearSolver
     SUNLinSolNewEmpty()
     {
       /* create linear solver object */
@@ -80,7 +80,7 @@ namespace SUNDIALS
      *
      * @param solver The solver memory to free
      */
-    void
+    inline void
     SUNLinSolFreeEmpty(SUNLinearSolver solver)
     {
       if (solver == nullptr)