[FFmpeg-user] error when I compile Microsoft ffmpeginterop

[Alfred]

Dear guys，
    There is some errors when I compile ffmpeginterop.I do follow the https://trac.ffmpeg.org/wiki/CompilationGuide/WinRT#CompilingforWindows10 and try to just BuildFFmpeg.bat. 
    The first method,the error print is cl is unable to create an executable file.
C compiler test failed.
The second method ,the error is
GNU assembler not found, install/update gas-preprocessor


I complie the arch=x64 and x86 is ok and can be used,just arch=arm is error.All the software is the newest.FFMPEG is version 3.2.2.The MSYS2 tools I need is the following:
$ which cl
/c/Program Files (x86)/Microsoft Visual Studio 14.0/VC/BIN/x86_ARM/cl

$ which link
/c/Program Files (x86)/Microsoft Visual Studio 14.0/VC/BIN/x86_ARM/link

$ which armasm
/c/Program Files (x86)/Microsoft Visual Studio 14.0/VC/BIN/x86_ARM/armasm

$ which yasm
/usr/bin/yasm

$ which cpp
/usr/bin/cpp

$ which gas-preprocessor.pl 
    /usr/bin/gas-preprocessor.pl


    Here is the log.


Thanks and best regards
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