GPU Display: require GLFW >= 3.4

GPUDisplayFrontendGlfw.cxx uses glfwGetPlatform() and the
GLFW_PLATFORM_* constants, introduced in GLFW 3.4. Without a minimum
version the lookup accepted older system installs and the build
failed at compile time instead of at configuration.

Assisted by Claude Code

Author: mconcas

GPU/GPUTracking/Standalone/CMakeLists.txt

@@ -86,7 +86,7 @@ else()
 endif()
 
 if(GPUCA_BUILD_EVENT_DISPLAY)
-  find_package(GLFW NAMES glfw3 CONFIG REQUIRED)
+  find_package(GLFW 3.4 NAMES glfw3 CONFIG REQUIRED)
   find_package(GLEW REQUIRED)
   find_package(GLUT REQUIRED)
   find_package(OpenGL REQUIRED)

dependencies/FindGLFW.cmake

@@ -11,7 +11,7 @@
 
 # Simply provide a namespaced alias for the existing target 
 
-find_package(GLFW NAMES glfw3 CONFIG)
+find_package(GLFW 3.4 NAMES glfw3 CONFIG)
 if(NOT GLFW_FOUND)
   return()
 endif()