From 1fdb927b5693344c9d58e887c61eb9c7c7fcbc6c Mon Sep 17 00:00:00 2001
From: enricoturri1966 <enricoturri@seznam.cz>
Date: Thu, 30 Jun 2022 12:21:52 +0200
Subject: [PATCH] Fixed build on non Windows systems

---
 src/slic3r/GUI/OpenGLManager.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/slic3r/GUI/OpenGLManager.cpp b/src/slic3r/GUI/OpenGLManager.cpp
index 41a11eda45..9583f9ae6c 100644
--- a/src/slic3r/GUI/OpenGLManager.cpp
+++ b/src/slic3r/GUI/OpenGLManager.cpp
@@ -274,7 +274,11 @@ OpenGLManager::~OpenGLManager()
 }
 
 #if ENABLE_OPENGL_DEBUG_OPTION
+#ifdef _WIN32
 static void APIENTRY CustomGLDebugOutput(GLenum source, GLenum type, unsigned int id, GLenum severity, GLsizei length, const char* message, const void* userParam)
+#else
+static void CustomGLDebugOutput(GLenum source, GLenum type, unsigned int id, GLenum severity, GLsizei length, const char* message, const void* userParam)
+#endif // _WIN32
 {
     if (severity == GL_DEBUG_SEVERITY_NOTIFICATION)
         return;