[ROS2] Discussion for pthreads dependency on Windows about apriltag HOT 8 CLOSED

Hi, I'm trying to compile your code on Windows Visual Studio 2019. The compiling process is fine and the progress cannot decode jpg files. The fread command would not read the whole jpg file. Could you please help me figure why this happen?

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Currently we only officially support Linux for AprilTags. Probably the best solution here is just to make sure that we call that out more explicitly in the documentation.

@wxmerkt Do you have any suggestions for making this clearer on the ROS side of things? Is there some way we can mark this as a linux-only package?

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I’m afraid I’ve never built ros packages on windows. @seanyen do you have an example for the pthreads rosdep dependency? I couldn’t find a rosdep key.
Given this is a pure C library I don’t think C++ threads modernisation is planned.

(There are ways to blacklist packages but rare for people to do so - I haven’t received a build failure so I assume windows isn’t packaged via the build farm.)

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Also, this PR mentions one approach to building on windows: #27

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@seanyen you could try to just stub out the pthread calls and set nthreads to 1 in the detector. If you don't need multithreads it should just work as far as I can tell.

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Thanks for great project!
I deleted all pthread dependency and set nthread to 1. Everything works fine on Windows Visual Studio 2015.
My source code is here.

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Thanks for great project! I deleted all pthread dependency and set nthread to 1. Everything works fine on Windows Visual Studio 2015. My source code is here.

Thank you for your analysis, let me solve the problem of msvc compiling on windows, thank you

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There is PR #95 by @ryancwicks to build without pthreads and implement Windows support. It needs to be rebased and cleaned up.

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