Can't build JMP from source, LNK4017 / LNK4272 warnings, then LNK1120 fatal error

[qwerty12]

Thanks for your reply, greatly appreciate it. I'm trying to create a x64 build, I used Cross tools because that's what the instructions said. When I use x64 Native Tools Command Prompt for VS 2022 I get many "PlayerComponent.cpp.obj : error LNK2019: unresolved external symbol" messages (related to mpv) and it ends with a fatal error. So I'm still stuck.

I did manage to build it on my system (although I didn't then carry on with the instructions for building an installer) by following the steps from the automated workflow used by JMP that I linked in my previous post and the README. I have no idea how your system is configured and what steps you've followed (and omitted), but I can go through what I did with a clean tree in the hopes it may help you. If you started building a 32-bit build and are now switching to produce a 64-bit build, I'd start by cleaning the build folder.

I already had CMake and Ninja installed via Scoop, so they were already the latest versions and were in my %PATH%. Git for Windows was installed, of course. I did have to install Qt's 5.15.2 Qt WebEngine and MSVC 2019 64-bit from Qt's installer (username and password taken from BugMeNot).

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1. I ran "x64 Native Tools Command Prompt for VS 2022"
   
2. Cloned the code: git clone --single-branch --branch master https://github.com/jellyfin/jellyfin-media-player.git
   
3. cd jellyfin-media-player && mkdir build && cd build
   
4. I downloaded and extracted https://github.com/shinchiro/mpv-winbuil...e52f975.7z into jellyfin-media-player\build\mpv
   
5. I extracted gendef.exe from https://mirror.msys2.org/mingw/mingw64/m...kg.tar.zst (WinRAR/7-Zip), placed it into jellyfin-media-player\build\mpv and ran gendef libmpv-2.dll
   
6. From the jellyfin-media-player\build folder, I ran cmake -GNinja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=output -DCMAKE_MAKE_PROGRAM=ninja.exe -DQTROOT=C:/Qt/5.15.2/msvc2019_64 -DMPV_INCLUDE_DIR=mpv/include -DMPV_LIBRARY=mpv/libmpv-2.dll -DCMAKE_INSTALL_PREFIX=output ..
   
7. I ran lib /def:mpv\libmpv-2.def /out:mpv\libmpv-2.dll.lib /MACHINE:X64
   
8. I finally ran ninja and got a src\JellyfinMediaPlayer.exe for my troubles
   
9. Running it failed; I had to run set "PATH=C:\Qt\5.15.2\msvc2019_64\bin;%PATH%" so the Qt DLLs are found and copy mpv\libmpv-2.dll src\ for src\JellyfinMediaPlayer.exe to start
   

Now, the actual loading of JMP fails - I imagine it's looking for some resource or for more (QtWebEngine) DLLs to load at runtime l that I need to copy from elsewhere (presumably the steps to create an installer bundles everything together) - but it did build for a 64-bit system, on a 64-bit machine, using the latest 64-bit libmpv dll from shinchiro: