From a20f9e738bbf79ec2a815859d96e0054ef844f61 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <anonymous.maarten@gmail.com>
Date: Sun, 27 Jun 2021 18:43:30 +0200
Subject: [PATCH] cmake: nx toolchain has FindOpenGL module

---
 CMakeLists.txt              |  6 ------
 cmake/librw-config.cmake.in | 12 +++++-------
 cmake/nx/FindNXGL.cmake     | 38 -------------------------------------
 conanfile.py                |  2 +-
 src/CMakeLists.txt          | 29 +++++++++++++++-------------
 5 files changed, 22 insertions(+), 65 deletions(-)
 delete mode 100644 cmake/nx/FindNXGL.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 80f6b64..de3211d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -90,12 +90,6 @@ if(LIBRW_INSTALL)
             DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake"
         )
     endif()
-    if(NINTENDO_SWITCH)
-        install(
-            FILES "${CMAKE_CURRENT_LIST_DIR}/cmake/nx/FindNXGL.cmake"
-            DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake"
-        )
-    endif()
 
     string(REPLACE "." ";" cmake_c_compiler_version_list "${CMAKE_C_COMPILER_VERSION}")
     list(GET cmake_c_compiler_version_list 0 cmake_c_compiler_version_major)
diff --git a/cmake/librw-config.cmake.in b/cmake/librw-config.cmake.in
index 6ea7619..519e63e 100644
--- a/cmake/librw-config.cmake.in
+++ b/cmake/librw-config.cmake.in
@@ -3,19 +3,17 @@ include("${CMAKE_CURRENT_LIST_DIR}/librw-targets.cmake")
 set(LIBRW_PLATFORM "@LIBRW_PLATFORM@")
 set(LIBRW_PLATFORMS "@LIBRW_PLATFORMS@")
 set(LIBRW_PLATFORM_@LIBRW_PLATFORM@ ON)
-set(LIBRW_PLATFORM_GL3_REQUIRES_OPENGL @LIBRW_PLATFORM_GL3_REQUIRES_OPENGL@)
 
 if(LIBRW_PLATFORM_GL3)
     set(LIBRW_GL3_GFXLIB "@LIBRW_GL3_GFXLIB@")
     set(LIBRW_GL3_GFXLIBS "@LIBRW_GL3_GFXLIBS@")
 
-    if(LIBRW_PLATFORM_GL3_REQUIRES_OPENGL)
-        set(OpenGL_GL_PREFERENCE GLVND)
-        find_package(OpenGL REQUIRED)
-    endif()
-    if(NINTENDO_SWITCH)
-        find_package(NXGL REQUIRED)
+    set(OpenGL_GL_PREFERENCE GLVND)
+    find_package(OpenGL)
+    if(NOT TARGET TARGET OpenGL::OpenGL AND NOT TARGET OpenGL::EGL AND NOT TARGET OpenGL::GL)
+        message(FATAL_ERROR )
     endif()
+
     if(LIBRW_GL3_GFXLIB STREQUAL "GLFW")
         find_package(glfw3 REQUIRED)
     elseif(LIBRW_GL3_GFXLIB STREQUAL "SDL2")
diff --git a/cmake/nx/FindNXGL.cmake b/cmake/nx/FindNXGL.cmake
deleted file mode 100644
index 25e86d2..0000000
--- a/cmake/nx/FindNXGL.cmake
+++ /dev/null
@@ -1,38 +0,0 @@
-find_library(NXGL_EGL_LIBRARY EGL)
-find_library(NXGL_GLAPI_LIBRARY glapi)
-find_library(NXGL_DRM_NOUVEAU_LIBRARY drm_nouveau)
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(NXGL
-    REQUIRED_VARS NXGL_EGL_LIBRARY NXGL_GLAPI_LIBRARY NXGL_DRM_NOUVEAU_LIBRARY
-)
-
-if(NXGL_FOUND)
-    if(NOT TARGET NXGL::EGL)
-        add_library(NXGL::EGL UNKNOWN IMPORTED)
-        set_target_properties(NXGL::EGL PROPERTIES
-            IMPORTED_LOCATION "${NXGL_EGL_LIBRARY}"
-        )
-    endif()
-
-    if(NOT TARGET NXGL::glapi)
-        add_library(NXGL::glapi UNKNOWN IMPORTED)
-        set_target_properties(NXGL::glapi PROPERTIES
-            IMPORTED_LOCATION "${NXGL_GLAPI_LIBRARY}"
-        )
-    endif()
-
-    if(NOT TARGET NXGL::drm_nouveau)
-        add_library(NXGL::drm_nouveau UNKNOWN IMPORTED)
-        set_target_properties(NXGL::drm_nouveau PROPERTIES
-            IMPORTED_LOCATION "${NXGL_DRM_NOUVEAU_LIBRARY}"
-        )
-    endif()
-
-    if(NOT TARGET NXGL::OpenGL)
-        add_library(NXGL::OpenGL INTERFACE IMPORTED)
-        set_target_properties(NXGL::OpenGL PROPERTIES
-            INTERFACE_LINK_LIBRARIES "NXGL::EGL;NXGL::glapi;NXGL::drm_nouveau"
-        )
-    endif()
-endif()
diff --git a/conanfile.py b/conanfile.py
index 9f72e08..4cefb49 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -45,7 +45,7 @@ class LibrwConan(ConanFile):
 
     def validate(self):
         if self.options.platform == "d3d9" and self.settings.os != "Windows":
-            raise ConanInvalidConfiguration("d3d9 can only be built for Windows")
+            raise ConanInvalidConfiguration("platform=d3d9 can only be built for os=Windows")
         if self._os_is_playstation2:
             if self.options.platform not in ("null", "ps2"):
                 raise ConanInvalidConfiguration("os=Playstation2 only supports platform=(null,ps2)")
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index bdfefc7..5b16901 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -149,16 +149,6 @@ set_target_properties(librw
 )
 
 if(LIBRW_PLATFORM_GL3)
-    if(LIBRW_PLATFORM_GL3_REQUIRES_OPENGL)
-        set(OpenGL_GL_PREFERENCE GLVND)
-        find_package(OpenGL REQUIRED)
-
-        target_link_libraries(librw
-            PRIVATE
-                OpenGL::GL
-        )
-    endif()
-
     if (LIBRW_GL3_GFXLIB STREQUAL "GLFW")
         find_package(glfw3 REQUIRED)
         target_link_libraries(librw
@@ -174,12 +164,25 @@ if(LIBRW_PLATFORM_GL3)
         )
     endif()
 
-    if(NINTENDO_SWITCH)
-        find_package(NXGL REQUIRED)
+    set(OpenGL_GL_PREFERENCE GLVND)
+    find_package(OpenGL)
+    if(TARGET OpenGL::OpenGL)
         target_link_libraries(librw
             PRIVATE
-                NXGL::OpenGL
+                OpenGL::OpenGL
         )
+    elseif(TARGET OpenGL::EGL)
+        target_link_libraries(librw
+            PRIVATE
+                OpenGL::EGL
+        )
+    elseif(TARGET OpenGL::GL)
+        target_link_libraries(librw
+            PRIVATE
+                OpenGL::GL
+        )
+    else()
+        message(FATAL_ERROR "find_package(OpenGL) failed.")
     endif()
 elseif(LIBRW_PLATFORM_D3D9)
     target_link_libraries(librw