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Do not link libSDL2main.a

Causes stupid annoying errors and CSE2 doesn't even need it anyway so
wtf

--- a/CMakeLists.txt

+++ b/CMakeLists.txt

@@ -474,10 +474,18 @@

 		# pkg-config

 		if (PKG_CONFIG_STATIC_LIBS)

 			message(STATUS "Using system SDL2 (pkg-config, static)")

+			# Do not link libSDL3main.a, otherwise we get weird linker errors about SDL_main not being found.

+			# We don't need SDL2's WinMain->main shim anyway, so we can just ignore it.

+			list(REMOVE_ITEM sdl2_STATIC_CFLAGS "-Dmain=SDL_main")

+			list(REMOVE_ITEM sdl2_STATIC_LDFLAGS "-lSDLmain")

 			target_compile_options(CSE2 PRIVATE ${sdl2_STATIC_CFLAGS})

 			target_link_libraries(CSE2 PRIVATE ${sdl2_STATIC_LDFLAGS})

 		else()

 			message(STATUS "Using system SDL2 (pkg-config, dynamic)")

+			# Do not link libSDL3main.a, otherwise we get weird linker errors about SDL_main not being found.

+			# We don't need SDL2's WinMain->main shim anyway, so we can just ignore it.

+			list(REMOVE_ITEM sdl2_CFLAGS "-Dmain=SDL_main")

+			list(REMOVE_ITEM sdl2_LDFLAGS "-lSDLmain")

 			target_compile_options(CSE2 PRIVATE ${sdl2_CFLAGS})

 			target_link_libraries(CSE2 PRIVATE ${sdl2_LDFLAGS})

 		endif()