Compiling Maya 2020 C++ Plugin with Visual Studio 15 Confusing Build Errors

[Alex Gaidachev]

Okay this one is a tad confusing for me because I set the environment settings right to compile Maya 2020 Plugins using the 2020Devkit and built the project and right off the bat, it starts to complain:

1>------ Build started: Project: smoothWeights, Configuration: Debug x64 ------

1>smoothWeightsTool.cpp
1>d:\installed programs\autodesk\maya2020\include\maya\mboundingbox.h(53): warning C4003: not enough arguments for function-like macro invocation 'min'
1>d:\installed programs\autodesk\maya2020\include\maya\mboundingbox.h(53): error C2059: syntax error: ')'
1>d:\installed programs\autodesk\maya2020\include\maya\mboundingbox.h(53): error C2334: unexpected token(s) preceding ':'; skipping apparent function body
1>d:\installed programs\autodesk\maya2020\include\maya\mboundingbox.h(54): warning C4003: not enough arguments for function-like macro invocation 'max'
1>d:\installed programs\autodesk\maya2020\include\maya\mboundingbox.h(64): error C2143: syntax error: missing ')' before ';'
1>d:\installed programs\autodesk\maya2020\include\maya\mboundingbox.h(64): error C2059: syntax error: ')'
1>d:\installed programs\autodesk\maya2020\include\maya\mboundingbox.h(64): error C2238: unexpected token(s) preceding ';'
1>d:\installed programs\autodesk\maya2020\include\maya\mboundingbox.h(66): error C2059: syntax error: '}'

1>d:\installed programs\autodesk\maya2020\include\maya\mboundingbox.h(66): error C2143: syntax error: missing ';' before '}'

...

...

1>d:\installed programs\autodesk\maya2020\include\maya\mplugarray.h(73): error C3646: 'begin': unknown override specifier
1>d:\installed programs\autodesk\maya2020\include\maya\mplugarray.h(73): error C2059: syntax error: '('
1>d:\installed programs\autodesk\maya2020\include\maya\mplugarray.h(73): error C2238: unexpected token(s) preceding ';'
1>d:\installed programs\autodesk\maya2020\include\maya\mplugarray.h(74): error C3646: 'end': unknown override specifier
1>d:\installed programs\autodesk\maya2020\include\maya\mplugarray.h(74): error C2059: syntax error: '('
1>d:\installed programs\autodesk\maya2020\include\maya\mplugarray.h(74): error C2238: unexpected token(s) preceding ';'
1>d:\installed programs\autodesk\maya2020\include\maya\mplugarray.h(76): error C3646: 'begin': unknown override specifier

..

..

1>d:\installed programs\autodesk\maya2020\include\maya\mfloatvectorarray.h(87): error C2059: syntax error: '('
1>d:\installed programs\autodesk\maya2020\include\maya\mfloatvectorarray.h(87): error C2238: unexpected token(s) preceding ';'
1>d:\installed programs\autodesk\maya2020\include\maya\mfloatvectorarray.h(88): error C3646: 'cend': unknown override specifier
1>d:\installed programs\autodesk\maya2020\include\maya\mfloatvectorarray.h(88): error C2059: syntax error: '('
1>d:\installed programs\autodesk\maya2020\include\maya\mfloatvectorarray.h(88): error C2238: unexpected token(s) preceding ';'
1>d:\installed programs\autodesk\maya2020\include\maya\mpointarray.h(37): error C2143: syntax error: missing ';' before '<'
1>d:\installed programs\autodesk\maya2020\include\maya\mpointarray.h(37): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:\installed programs\autodesk\maya2020\include\maya\mpointarray.h(37): error C2238: unexpected token(s) preceding ';'
1>d:\installed programs\autodesk\maya2020\include\maya\mpointarray.h(38): error C2143: syntax error: missing ';' before '<'

It's complaining about Autodesk Maya's 2020 header files. What the heck is going on here?

[Justin Israel]

It may be having trouble parsing a macro definition in that header which could then mess up parsing for the rest of the file. Are you using the right compiler version for Maya 2020? If the compiler is too old then it may not support modern syntax used in the header. I don't do windows compiling so I don't know what VS compiler version that would be, or if I am even correct in my guess. 

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[Alex Gaidachev]

Hi Justin,

Thank you for your response. I've done some research, and judging from this website link here: https://around-the-corner.typepad.com/adn/2019/12/maya-2020-api-update-guide.html

It would appear that for windows, to compile Maya2020 plugins, I needed to download and use a new SDK kit: Windows SDK Version 10.0.10586.0

And that is what I've done here: https://developer.microsoft.com/en-us/windows/downloads/windows-10-sdk/

And so I've rebuilt a really simple radialNode plugin from Maya. Came up with some weird linker errors:

ucrtd.lib

msvcrtd.lib

msvcprtd.lib

.. and so on.

Anyways it was all really dumb, so I gave up and then decided to download and install the Visual Studio 2019 version, set it to run the latest SDK version and then it worked.

so, so dumb.

[Justin Israel]

Glad you got it working. I don't know the difference between the
Visual Studio compiler version and the windows SDK version. Must have
needed both to be the right (latest) versions.

Justin

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