Problem during building BTK from opensim-source

[Donald Ivan]

i am trying to build from opensim-source according to the guidance from github,but here comes a problem.
When i try to carry out command "cmake --build . --config RelWithDebInfo -- /maxcpucount:8", the powershell tells me a list of errors:C:\opensim-core\dependencies\BTK\Utilities\Open3DMotion\src\Open3DMotion\MotionFile\Formats\MDF\FileFormatMDF.cpp(89): error C3688: i
nvalid literal suffix 'fm'; literal operator or literal operator template 'operator ""fm' not found .
i have built "doccopt" and 'simbody' successfully,but due to the above problem, 'BTK' cannot be built

[Ayman Habib]

Hi Donald,

What version of visual studio are you using? And are you using the source distribution from 4.0 or the latest master branch on github?

Please provide more details so we can help you,

Best regards,
-Ayman