[[Property:modification_date|Fri, 07 Sep 2018 13:34:06 GMT]]
[[Property:publication_date|Fri, 07 Sep 2018 09:34:23 GMT]]
[[Property:title|FAQ]]
[[Property:description|Frequently Asked Questions]]
[[Property:link_title|FAQ]]
[[Property:weight|5]]
[[Property:uuid|e604c263-249d-48d2-8238-b3d027ed04dd]]

== I have Visual Studio on my machine, but EiffelStudio cannot find it ==

Here is a summary of steps to make sure C code compiles using Visual Studio 2017 in 64-bit mode on 64-bit Windows 10:

# Cleanup all projects by removing <code lang="sh">EIFGENs</code> directories (including those in precompiles).
# Setup Visual Studio 2017 environment in 64-bit mode by running
#:<code lang="sh">...\vsdevcmd.bat -arch=amd64</code>
# Setup EiffelStudio environment by running (most probably, this step is unnecessary if using GUI only)
#:<code lang="sh">...\esvars.bat</code>
# Tell EiffelStudio to use Visual Studio 2017-compatible libraries
#:<code lang="sh">set ISE_C_COMPILER=msc_vc140</code>
# Launch EiffelStudio from the command prompt:
#:<code lang="sh">estudio</code>


=== See also: ===
*[https://www.eiffel.org/doc/uuid/B2E4622A-2495-47DD-9C02-B9940A026EC1 Mini How-tos]
* [https://www.eiffel.com/resources/faqs/eiffel-language/ General Eiffel FAQ]
* [https://www.eiffel.com/resources/faqs/eiffel-studio/ EiffelStudio FAQ]