error compiling wireshark after successful configuration

Trying to compile wireshark, I had several errors in the environment setup/configuration step that I worked through.

Now I am following the user guide at https://www.wireshark.org/docs/wsdg_html_chunked/ChSetupWin32.html. I am at the "msbuild /m /p:Configuration=RelWithDebInfo Wireshark.sln" step 2.2.12. The first error I see is

94>CustomBuild:
     Generating developer-guide.xml
     'LC_ALL' is not recognized as an internal or external command,
     operable program or batch file.
94>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppComm
   on.targets(170,5): error MSB6006: "cmd.exe" exited with code 9009. [C:\w
   ireshark_development\development\wsbuild64\docbook\generate_developer-gu
   ide.xml.vcxproj]

So, I looked up to see if other users had this problem, and they were told to ensure Cywin packages for AsciiDoc and DocbookXML were installed. But the funny thing is, the Cygwin package I was told to install as part of the setup doesn't have the option for those 2 packages. So I'm left wondering if I have some weird mismatch between tool and wireshark source versions and installation instructions.

Incidentally, I am compiling this in order to compile a dissector. I can post other captures as need be.

Thanks, Brett