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I am not able to compile the firefox esr 78 on windows 7 64bit

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I managed to compile firefox on linux ubuntu but did not generate the executables for windows.

Then I started configuring on windows, but I believe the problem is with the Visual Studio version, I installed the latest version of VS 2019, then I found that it doesn't work, because VS 2019 now requires the "C" compiler version 10, and mozbuild uses version 9.

I ended up discovering in other documentation that I have to use visual studio 2017, but I installed VS 2017 version 15.9.29, however it gives error in the compilation.

I found in other documentation that I must use VS 2017 version 15.8, but this version is not available for download.

Can anyone help me what I have to do to be able to compile it?

I managed to compile firefox on linux ubuntu but did not generate the executables for windows. Then I started configuring on windows, but I believe the problem is with the Visual Studio version, I installed the latest version of VS 2019, then I found that it doesn't work, because VS 2019 now requires the "C" compiler version 10, and mozbuild uses version 9. I ended up discovering in other documentation that I have to use visual studio 2017, but I installed VS 2017 version 15.9.29, however it gives error in the compilation. I found in other documentation that I must use VS 2017 version 15.8, but this version is not available for download. Can anyone help me what I have to do to be able to compile it?
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