tbh the 64 bit mingw is not all to different to setup than the 32 bit one

the main thing you need to make sure of is that the source you try to compile is 64 bit compatible, luckily Theres a lot of helper functions just for that like intptr_t -> int uintptr_t -> unsigned int etc. these apply the correct bit values for the arch. My codeblocks ide on the site is made to Work with both the 32 and 64 bit mingw so if you want to have a go at it i think i made it as easy as i could

it even imports msvc solutions though you probably need to correct optimization switches to fit mingw's but thats quite easy as well. If you need help you just have to ask im not dead yet heheheheh

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