VS Arduino - (SOLVED) Slow compilation problem since V 1905

Mar 20^th, 2026 at 6:47am (UTC)

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VS Arduino › Visual Micro › Installation & Troubleshooting › (SOLVED) Slow compilation problem since V 1905

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(SOLVED) Slow compilation problem since V 1905 (Read 2866 times)

CB Newbies Offline Posts: 3 Joined: May 15^th, 2019	(SOLVED) Slow compilation problem since V 1905 Jun 11^th, 2019 at 5:55pm	Print Post
	Hello, For some time, the compilation time has grown considerably. I did tests on an old PC with a fresh version of Vindows10 with only Arduino Ide 1.89 and Visual Studio Community 17 V 15.9.12. No antivirus and Windows defender disabled. I have tried several versions of Visual Micro and here are compilations times (not the first, but the second compilation). v 1904.24.12 20 seconds v 1904.27.0 20 seconds v 1904.29.0 20 seconds v 1905.1.8 3 minutes 30seconds v 1905.05.19 3 minutes 30 seconds v 1905.24.0 3 minutes 30 seconds v 1906.3.0 3 minutes 30 seconds It seems that there is a problem since the 1905 version ... Thanks.
	« Last Edit: Jun 13^th, 2019 at 3:26pm by Tim@Visual Micro »
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Tim@Visual Micro Administrator Offline Posts: 12204 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Compilation problem since V 1905 Reply #1 - Jun 11^th, 2019 at 6:44pm	Print Post
	Thanks very much for the useful testing. Initial tests indicate the hold up is during the deep search phase. We will investigate more over the next 24 hours. If the deep search is the issue you might be able to workaround the issue for now by switching off "vMicro>Compiler>Deep search for libraries" If you switch off deep search you must #include at least one header from all required libraries in the .ino code. For example:- Code #include <HTTPClient.h> #include <WiFiClientSecure.h> #include <ssl_client.h> #include <WiFiUdp.h> #include <WiFiType.h> #include <WiFiSTA.h> #include <WiFiServer.h> #include <WiFiScan.h> #include <WiFiMulti.h> #include <WiFiGeneric.h> #include <WiFiClient.h> #include <WiFiAP.h> #include <WiFi.h> #include <ETH.h> #include <FS.h> #include <SPIFFS.h> #include <SPI.h> #include <Wire.h> +++ any other lib header.h so we find the libs/paths
	« Last Edit: Jun 11^th, 2019 at 6:45pm by Tim@Visual Micro »

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Tim@Visual Micro Administrator Offline Posts: 12204 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Compilation problem since V 1905 Reply #2 - Jun 11^th, 2019 at 7:06pm	Print Post
	Would you please post the equivalent build output using 1904.29.0 Thanks v much


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CB Newbies Offline Posts: 3 Joined: May 15^th, 2019	Re: Compilation problem since V 1905 Reply #3 - Jun 12^th, 2019 at 7:21am	Print Post
	Hello, Here are the versions 1904.29.0 and 1906.3.0 made on my VS2019 test PC. Good day and thank you

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Tim@Visual Micro Administrator Offline Posts: 12204 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Compilation problem since V 1905 Reply #4 - Jun 12^th, 2019 at 1:50pm	Print Post
	Thanks, that confirms the issue is related to caching. Both deep search and the project code are being compiled too often. This will relate to the new compiler flags ahead of the new gdb debugging that is about to be released which allows core, libraries and projects to use different flags. Hope to have a fix over the next 24 hours, I will update this post when it is available.


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Tim@Visual Micro Administrator Offline Posts: 12204 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Slow compilation problem since V 1905 Reply #5 - Jun 13^th, 2019 at 3:04pm	Print Post
	Hi. Thanks again for the really great report. This issue is resolved, please install 1906.12 from the releases section of this forum. We are currently implementing a new test framework so this type of issue should not happen in future. note: The release will be published to the gallery shortly., however the forum offers early download.


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CB Newbies Offline Posts: 3 Joined: May 15^th, 2019	Re: Slow compilation problem since V 1905 Reply #6 - Jun 13^th, 2019 at 3:23pm	Print Post
	Hi, Thanks, it's OK now


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