VS Arduino - Including shared class from within local sub folder

Jun 24^th, 2025 at 10:50pm (UTC)

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VS Arduino › Visual Micro › Visual Studio 2017, 2019, 2022 › Including shared class from within local sub folder

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Including shared class from within local sub folder (Read 2537 times)

Andrew (Retro JDM) Newbies Offline Posts: 2 Joined: Feb 26^th, 2018	Including shared class from within local sub folder Mar 1^st, 2018 at 9:59pm	Print Post
	Hello, I have a solution with multiple projects. I'd like to use a shared project to store some code. This all works fine when the folder structure is simple, but when I try to organise my code into sub-folders, I either get errors with the linker, or intellisense. Here's a bare-minimum example: My folder structure Dog.h (a header in a local sub-folder) Intellisense is happy here, by when I try to compile, I get: Dog.h: 3:21: fatal error: Pet/Pet.h: No such file or directory Cat.h (a header in a local sub-folder) This compiles, but intellisense shows errors Here's a link to the full solution if you need it: http://retrojdm.com/Files/shared-project-example.zip Am I doing something wrong? Is there a way to retain this folder structure and satisfy both the linker and intellisense? ~ Andrew


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Tim@Visual Micro Administrator Offline Posts: 12191 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Including shared class from within local sub folder Reply #1 - Mar 2^nd, 2018 at 1:57pm	Print Post
	The arduino build system requires the build in a temp folder. Therefore the shared project code is merged into the same temp folder structure as the main project during compilation. This should mean that your Pet project files will be in the same folder as your main code during compile and #include "Pet.h" should work. If you created a sub folder below the Pet shared project called "\Pet" and placed all Pet code in or below that folder then your main arduino sketch code include would be #include "Pet/Pet.h" If you have a sub folder below your main arduino code called \Test containing a Test.cpp then Pet would be included as "../Pet.h" or in my latter example with \Pet sub folder then "../Pet/Pet.h" The root of all projects should be considered to be the same for all project code and shared projects that are not library projects.


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Andrew (Retro JDM) Newbies Offline Posts: 2 Joined: Feb 26^th, 2018	Re: Including shared class from within local sub folder Reply #2 - Mar 2^nd, 2018 at 8:50pm	Print Post
	Thanks for taking the time to explain everything The only nag I have is with intellisense thinking #include "../Pet/Pet.h" is invalid from within Cat/Cat.h. Am I stuck with this?


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Tim@Visual Micro Administrator Offline Posts: 12191 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Including shared class from within local sub folder Reply #3 - Mar 2^nd, 2018 at 9:01pm	Print Post
	You might need to move to library structure. I don't think microsoft expect a shared project to be able to reference another shared project. However it might work as a library


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Tim@Visual Micro Administrator Offline Posts: 12191 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Including shared class from within local sub folder Reply #4 - Mar 3^rd, 2018 at 1:31pm	Print Post
	Thinking some more. The Pet project should be a library then all will be well. Pet will always then be #include "pet.h"


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