From 027efca2ecb3b465993179d415d7c85fd77fdb38 Mon Sep 17 00:00:00 2001
From: Fabien Spindler <Fabien.Spindler@inria.fr>
Date: Tue, 5 Nov 2024 11:31:04 +0100
Subject: [PATCH] Fix potential unused function definition

---
 .../imgproc/brightness/tutorial-brightness-adjustment.cpp     | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tutorial/imgproc/brightness/tutorial-brightness-adjustment.cpp b/tutorial/imgproc/brightness/tutorial-brightness-adjustment.cpp
index 1645cef9ec..c0fd9c5112 100644
--- a/tutorial/imgproc/brightness/tutorial-brightness-adjustment.cpp
+++ b/tutorial/imgproc/brightness/tutorial-brightness-adjustment.cpp
@@ -22,6 +22,9 @@
 using namespace VISP_NAMESPACE_NAME;
 #endif
 
+#if defined(VISP_HAVE_MODULE_IMGPROC) && defined(VISP_HAVE_DISPLAY) && \
+  (defined(VISP_HAVE_PNG) || defined(VISP_HAVE_OPENCV) || defined(VISP_HAVE_STBIMAGE) || defined(VISP_HAVE_SIMDLIB)) && \
+  ((__cplusplus >= 201103L) || (defined(_MSVC_LANG) && (_MSVC_LANG >= 201103L)))
 namespace
 {
 void display(vpImage<vpRGBa> &I_display, vpImage<vpRGBa> &I_color_res, const vpImage<vpRGBa> &I_color_adjust,
@@ -49,6 +52,7 @@ void display(vpImage<vpRGBa> &I_display, vpImage<vpRGBa> &I_color_res, const vpI
   vpDisplay::getClick(I_display);
 }
 }
+#endif
 
 int main(int argc, const char **argv)
 {