# preCICE is installed, but files are missing after installation, such as.hpp

**URL:** <https://precice.discourse.group/t/precice-is-installed-but-files-are-missing-after-installation-such-as-hpp/2434>\
**Category:** Installing preCICE\
**Created:** [April 10, 2025, 1:51am UTC](https://precice.discourse.group/t/precice-is-installed-but-files-are-missing-after-installation-such-as-hpp/2434 "2025-04-10T01:51:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Yang](https://avatars.discourse-cdn.com/v4/letter/y/77aa72/32.png) [@Yang](https://precice.discourse.group/u/Yang)\
**Post date:** [April 10, 2025, 1:51am UTC](https://precice.discourse.group/t/precice-is-installed-but-files-are-missing-after-installation-such-as-hpp/2434/1 "2025-04-10T01:51:13Z")

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Hello, I installed the precice2.5.0 version according to the official tutorial, but due to some reasons, I found that files such as precice.hpp were missing after installation.I want to figure out how to solve this problem .  
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**Author:** ![Makis](https://yyz2.discourse-cdn.com/free1/user_avatar/precice.discourse.group/makis/32/25_2.png) [@Makis](https://precice.discourse.group/u/Makis)\
**Post date:** [April 12, 2025, 4:55pm UTC](https://precice.discourse.group/t/precice-is-installed-but-files-are-missing-after-installation-such-as-hpp/2434/2 "2025-04-12T16:55:35Z")

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Hi @Yang,

the images that you intended to upload are not shown here. Could you please check and edit your post?

What probably happened is that you are installing preCICE v2 (which provided the `SolverInterface.hpp`), but you are following the documentation for preCICE v3 (which uses `precice.hpp`). See the changes here:

> **[Porting from 2.x to 3.x](https://precice.org/couple-your-code-porting-v2-3.html)**
>
> This guide helps you to upgrade from preCICE 2.x to preCICE 3.x.

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/precice/original/1X/67d2a5fa6f80e597e2267ff17fa8c1673cd11caa.svg) [@system](https://precice.discourse.group/u/system)\
**Post date:** [May 17, 2025, 9:57am UTC](https://precice.discourse.group/t/precice-is-installed-but-files-are-missing-after-installation-such-as-hpp/2434/3 "2025-05-17T09:57:00Z")

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Closed on May 17, 2025, 9:57am UTC

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