Resolve WinMain linking issues with CMake

skeleton/CMakeLists.txt

@@ -19,7 +19,6 @@ add_library(librw_skeleton
     imgui/stb_textedit.h
     imgui/stb_truetype.h
 )
-add_library(librw::skeleton ALIAS librw_skeleton)
 
 set_target_properties(librw_skeleton
     PROPERTIES
@@ -38,6 +37,20 @@ target_include_directories(librw_skeleton
         $<INSTALL_INTERFACE:${LIBRW_INSTALL_INCLUDEDIR}/skeleton>
 )
 
+# HACK: When building with MinGW, it's necessary to link to libmingw32.a *before* the library
+# that provides WinMain. To work around this, an intermediate target is created when using MinGW
+# that specifies the correct linking order.
+#
+# TODO: Use SDL_main on platforms that require it
+if(MINGW AND LIBRW_PLATFORM_D3D9)
+    add_library(librw_skeleton_main INTERFACE)
+    find_library(MINGW32_LIBRARY NAMES mingw32)
+    target_link_libraries(librw_skeleton_main INTERFACE ${MINGW32_LIBRARY} librw_skeleton)
+    add_library(librw::skeleton ALIAS librw_skeleton_main)
+else()
+    add_library(librw::skeleton ALIAS librw_skeleton)
+endif()
+
 if(LIBRW_INSTALL)
     install(
         FILES

skeleton/sdl2.cpp

@@ -1,5 +1,8 @@
 #ifdef LIBRW_SDL2
 
+#ifdef _WIN32
+#define SDL_MAIN_HANDLED
+#endif
 #include <rw.h>
 #include "skeleton.h"
 

skeleton/win.cpp

@@ -1,4 +1,5 @@
 #ifdef _WIN32
+#define SDL_MAIN_HANDLED
 #include <windows.h>
 #include <rw.h>
 #include "skeleton.h"
@@ -291,7 +292,7 @@ SetMousePosition(int x, int y)
 
 #endif
 
-#ifdef RW_OPENGL
+#if defined(RW_OPENGL) && !defined(__MINGW32__)
 int main(int argc, char *argv[]);
 
 int WINAPI