VS Arduino - Multiple definitions of - compile/link error using shared libraries

Apr 25^th, 2024 at 3:42pm (UTC)

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VS Arduino › Visual Micro › Visual Studio 2017, 2019, 2022 › Multiple definitions of - compile/link error using shared libraries

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Multiple definitions of - compile/link error using shared libraries (Read 1235 times)

Hedde Newbies Offline Posts: 5 Joined: Feb 3^rd, 2016	Multiple definitions of - compile/link error using shared libraries Jul 14^th, 2020 at 9:06am	Print Post
	Since the last update my shared libraries are compiled twice and linked twice giving the error - multiple definitions of ... - during link process. I created a new project, a new shared library with just one function and can reproduce the error (after adding additional libraries and removing them - weird) Non of my projects even in different solutions work. The build log shows the problem in line 725 where "shared1.o" is linked twice. Anybody has thoughts about this?

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Simon@Visual Micro Administrator Offline Posts: 2177 Joined: Feb 13^th, 2019	Re: Multiple definitions of - compile/link error using shared libraries Reply #1 - Jul 14^th, 2020 at 10:33am	Print Post
	Thanks for the clear report and logs. We have replicated this and will update as soon as there is a workaround / fix available.


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Simon@Visual Micro Administrator Offline Posts: 2177 Joined: Feb 13^th, 2019	Re: Multiple definitions of - compile/link error using shared libraries Reply #2 - Jul 14^th, 2020 at 10:43am	Print Post
	To work around this while we work on the release, please follow the below steps:- 1) Add Local board.txt to Project (Right Click main Arduino project in Solution Explorer > Add > Local Board.txt) 2) Add the below line to the file, and save Code vm.build.path-8dot3=false 3) Run Build > Clean Solution 4) Run Build as normal, it should now link as expected We will update later on when the release is available in the forum.


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Hedde Newbies Offline Posts: 5 Joined: Feb 3^rd, 2016	Re: Multiple definitions of - compile/link error using shared libraries Reply #3 - Jul 14^th, 2020 at 12:11pm	Print Post
	Hi Simon, Thanks, works perfect. (Cost me some time to realise "add local board.txt" is actual a menu option under project/add). Regards, Hedde


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Simon@Visual Micro Administrator Offline Posts: 2177 Joined: Feb 13^th, 2019	Re: Multiple definitions of - compile/link error using shared libraries Reply #4 - Jul 14^th, 2020 at 1:20pm	Print Post
	There is an updated release of Visual Micro (20.07.08.2) with the fix for this implemented, so the work around is no longer required once installed (delete board.txt, or comment out line with #). This can be downloaded from the top of the below board:- https://www.visualmicro.com/forums/YaBB.pl?board=VS_ARDUINO_EXT_RELEASES There is also further information below about how to install these versions in advance of them being released to the Gallery: Video Guide Installation Documentation


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Hedde Newbies Offline Posts: 5 Joined: Feb 3^rd, 2016	Re: Multiple definitions of - compile/link error using shared libraries Reply #5 - Jul 14^th, 2020 at 2:43pm	Print Post
	Thanks, works perfect! Regards, Hedde


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