https://github.com/mixxxdj/mixxx/pull/14574
From 9b64781b833fbb13dbcfadf5a936820c2b880f24 Mon Sep 17 00:00:00 2001
From: Nicolas PARLANT <nicolas.parlant@parhuet.fr>
Date: Mon, 31 Mar 2025 13:33:13 +0000
Subject: [PATCH] X11-less - Use FindWrapOpenGL

Use FindWrapOpenGL.cmake. It allows X11-less system.
Set link_target to OpenGL::OpenGL, GLVND-based. If not found, use
OpenGL:GL.

Furthermore, adding a NOQX11 definition so that the screensaver that
requires Xlib is now optional.

Signed-off-by: Nicolas PARLANT <nicolas.parlant@parhuet.fr>
---
 CMakeLists.txt           | 11 +++++++++--
 src/util/screensaver.cpp |  5 +++--
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b7a48247f97a..81a870534793 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3187,8 +3187,8 @@ else()
     set(CMAKE_FIND_FRAMEWORK FIRST)
   endif()
   set(OpenGL_GL_PREFERENCE "GLVND")
-  find_package(OpenGL REQUIRED)
   if(EMSCRIPTEN)
+    find_package(OpenGL REQUIRED)
     # Emscripten's FindOpenGL.cmake does not create OpenGL::GL
     target_link_libraries(mixxx-lib PRIVATE ${OPENGL_gl_LIBRARY})
     target_compile_definitions(mixxx-lib PUBLIC QT_OPENGL_ES_2)
@@ -3200,7 +3200,12 @@ else()
       PUBLIC -sMIN_WEBGL_VERSION=2 -sMAX_WEBGL_VERSION=2 -sFULL_ES2=1
     )
   else()
-    target_link_libraries(mixxx-lib PRIVATE OpenGL::GL)
+    find_package(WrapOpenGL REQUIRED)
+    if(OPENGL_opengl_LIBRARY)
+      target_link_libraries(mixxx-lib PRIVATE OpenGL::OpenGL)
+    else()
+      target_link_libraries(mixxx-lib PRIVATE OpenGL::GL)
+    endif()
   endif()
   if(UNIX AND QGLES2)
     target_compile_definitions(mixxx-lib PUBLIC QT_OPENGL_ES_2)
@@ -3841,6 +3846,8 @@ elseif(UNIX AND NOT APPLE AND NOT EMSCRIPTEN)
   if(${X11_FOUND})
     target_include_directories(mixxx-lib SYSTEM PUBLIC "${X11_INCLUDE_DIR}")
     target_link_libraries(mixxx-lib PRIVATE "${X11_LIBRARIES}")
+  else()
+    target_compile_definitions(mixxx-lib PUBLIC QNOX11)
   endif()
   find_package(Qt${QT_VERSION_MAJOR} COMPONENTS DBus REQUIRED)
   target_link_libraries(mixxx-lib PUBLIC Qt${QT_VERSION_MAJOR}::DBus)
diff --git a/src/util/screensaver.cpp b/src/util/screensaver.cpp
index 9eae4a1b4cd0..68f705184296 100644
--- a/src/util/screensaver.cpp
+++ b/src/util/screensaver.cpp
@@ -36,7 +36,8 @@ With the help of the following source codes:
 #  include <X11/extensions/scrnsaver.h>
 #endif
 
-#if defined(__LINUX__) || (defined(HAVE_XSCREENSAVER_SUSPEND) && HAVE_XSCREENSAVER_SUSPEND)
+#if (defined(__LINUX__) && !defined(QNOX11)) || \
+        (defined(HAVE_XSCREENSAVER_SUSPEND) && HAVE_XSCREENSAVER_SUSPEND)
 #  define None XNone
 #  define Window XWindow
 #  include <X11/Xlib.h>
@@ -146,7 +147,7 @@ void ScreenSaverHelper::uninhibitInternal()
     s_enabled = false;
 }
 
-#elif defined(Q_OS_LINUX)
+#elif (defined(Q_OS_LINUX) && !defined(QNOX11))
 const char *SCREENSAVERS[][4] = {
     // org.freedesktop.ScreenSaver is the standard. should work for gnome and kde too, 
     // but I add their specific names too