# \#libraries **URL:** https://forums.unrealengine.com/tag/libraries/1400.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Manage, sync and share assets between projects.](https://forums.unrealengine.com/t/manage-sync-and-share-assets-between-projects/421000)
**Author:** [@anonymous\_user\_2e226100](https://forums.unrealengine.com/u/anonymous_user_2e226100)\ **Replies:** 3\ **Last updated:** [October 27, 2026, 12:26pm UTC](https://forums.unrealengine.com/t/manage-sync-and-share-assets-between-projects/421000 "2026-10-27T12:26:19Z")
Hello, My company works with UE4 for engineering projects. We do have dozens of UE4 projects and so far, we only shared assets by copy/pasting subfolders in the Content folder of each projects. Our need for sharing ass… --- ## [How to deal with LNK2005 (redefinition) errors from third party libraries when using together?](https://forums.unrealengine.com/t/how-to-deal-with-lnk2005-redefinition-errors-from-third-party-libraries-when-using-together/1516723)
**Author:** [@lehuan5062](https://forums.unrealengine.com/u/lehuan5062)\ **Replies:** 2\ **Last updated:** [December 11, 2023, 12:08pm UTC](https://forums.unrealengine.com/t/how-to-deal-with-lnk2005-redefinition-errors-from-third-party-libraries-when-using-together/1516723 "2023-12-11T12:08:02Z")
I have plugin A and plugin B. Plugin A has gpr.lib and grpc.lib. Plugin B has firebase\_firestore.lib. If I only enable one of the plugins, I can package my project normally. If I enable both of the plugins, I can only us… --- ## [Missing libraries on Linux (cross-compiled)](https://forums.unrealengine.com/t/missing-libraries-on-linux-cross-compiled/461743)
**Author:** [@Broch](https://forums.unrealengine.com/u/Broch)\ **Replies:** 2\ **Last updated:** [August 24, 2023, 12:32am UTC](https://forums.unrealengine.com/t/missing-libraries-on-linux-cross-compiled/461743 "2023-08-24T00:32:15Z")
Hi, I cross compiled my project to run it on Linux (Debian 10.2). This is the server version of the project. The compilation seems to work but when I try to run the server (./GameServer-Linux-Shipping -log) I get the fo… --- ## [Anroid play services not working on newer library versions](https://forums.unrealengine.com/t/anroid-play-services-not-working-on-newer-library-versions/478128)
**Author:** [@pictowolf](https://forums.unrealengine.com/u/pictowolf)\ **Replies:** 1\ **Last updated:** [July 19, 2022, 4:03pm UTC](https://forums.unrealengine.com/t/anroid-play-services-not-working-on-newer-library-versions/478128 "2022-07-19T16:03:41Z")
Hello, I’m working with Google play services and trying to integrate FireBase. To do so I need to upgrade the outdated library Unreal uses from: com.google.android.gms,play-services-auth,11.8.0 com.google.android.gms,… --- ## [How to include the new CryptoPP lib in 4.11?](https://forums.unrealengine.com/t/how-to-include-the-new-cryptopp-lib-in-4-11/354019)
**Author:** [@DavidNSilva](https://forums.unrealengine.com/u/DavidNSilva)\ **Replies:** 7\ **Last updated:** [May 14, 2021, 3:42pm UTC](https://forums.unrealengine.com/t/how-to-include-the-new-cryptopp-lib-in-4-11/354019 "2021-05-14T15:42:22Z")
I am currently porting one of my projects to 4.11. I was already using a staticly linked cryptoPP library, but since it is now include in the engined I removed mine and tried to include the built-in. On my Build.cs I ad… --- ## [Импорт библиотек из vcpkg/import libraries from vcpkg](https://forums.unrealengine.com/t/vcpkg-import-libraries-from-vcpkg/457120)
**Author:** [@EugeneRoasted](https://forums.unrealengine.com/u/EugeneRoasted)\ **Replies:** 0\ **Last updated:** [October 18, 2019, 11:43pm UTC](https://forums.unrealengine.com/t/vcpkg-import-libraries-from-vcpkg/457120 "2019-10-18T23:43:11Z")
Всем привет. Некоторое время назад начал изучение UE4 и столкнулся с проблемой: проект UE не видит библиотек, установленных в vcpkg. Я находил “способ” импорта сторонних dll через плагин, но не думаю что это хорошая идея… --- ## [Can't get Linux libraries during cross-compilation](https://forums.unrealengine.com/t/cant-get-linux-libraries-during-cross-compilation/446367)
**Author:** [@evethir](https://forums.unrealengine.com/u/evethir)\ **Replies:** 0\ **Last updated:** [April 1, 2019, 9:26am UTC](https://forums.unrealengine.com/t/cant-get-linux-libraries-during-cross-compilation/446367 "2019-04-01T09:26:40Z")
Hi everybody In my project I use a plugin that, based on the target platform/compiler, consider different libraries. When cross-compiling for Linux, the plugin considers a GNU library that I can easly found in my Linux … --- ## [What libraries make up Unreal Engine 4? For example SDL2 and DirectX,What libraries does Unreal Engine 4 use?(For example: DirectX, SDL, etc)](https://forums.unrealengine.com/t/what-libraries-make-up-unreal-engine-4-for-example-sdl2-and-directx-what-libraries-does-unreal-engine-4-use-for-example-directx-sdl-etc/444647)
**Author:** [@rushzone](https://forums.unrealengine.com/u/rushzone)\ **Replies:** 0\ **Last updated:** [March 6, 2019, 1:09pm UTC](https://forums.unrealengine.com/t/what-libraries-make-up-unreal-engine-4-for-example-sdl2-and-directx-what-libraries-does-unreal-engine-4-use-for-example-directx-sdl-etc/444647 "2019-03-06T13:09:56Z")
I know this question has been asked before, but before you redirect me to an already existing thread, read the answers and see how vague or even completely unhelpful they’re. I am just trying to find out all the librarie… --- ## [What is the best way to Import stock blueprints?](https://forums.unrealengine.com/t/what-is-the-best-way-to-import-stock-blueprints/436623)
**Author:** [@Dark\_Jubei](https://forums.unrealengine.com/u/Dark_Jubei)\ **Replies:** 5\ **Last updated:** [October 29, 2018, 11:13am UTC](https://forums.unrealengine.com/t/what-is-the-best-way-to-import-stock-blueprints/436623 "2018-10-29T11:13:51Z")
Hi All, I have a library of pre-optimized assets that I use commonly in my scenes. I was wondering if there is some way I can create a shared library or collection or something, to source these from a pre-determined dir… --- ## [Is it possible to make a plugin in C++ that will work in a blueprint only project?](https://forums.unrealengine.com/t/is-it-possible-to-make-a-plugin-in-c-that-will-work-in-a-blueprint-only-project/434933)
**Author:** [@aashishvasu](https://forums.unrealengine.com/u/aashishvasu)\ **Replies:** 2\ **Last updated:** [October 3, 2018, 1:24pm UTC](https://forums.unrealengine.com/t/is-it-possible-to-make-a-plugin-in-c-that-will-work-in-a-blueprint-only-project/434933 "2018-10-03T13:24:49Z")
I am working on an inhouse file access plugin for my company, which exposes certain filenames and reading capabilities to blueprint nodes. Right now, the only way to include this plugin in a project is to make a c++ proj… --- ## [I built a project for Linux. Where's libopenal.so?](https://forums.unrealengine.com/t/i-built-a-project-for-linux-wheres-libopenal-so/426488)
**Author:** [@molul](https://forums.unrealengine.com/u/molul)\ **Replies:** 0\ **Last updated:** [June 2, 2018, 8:27am UTC](https://forums.unrealengine.com/t/i-built-a-project-for-linux-wheres-libopenal-so/426488 "2018-06-02T08:27:25Z")
I’m trying to build a project for Linux ARM. Yesterday I managed to download UE4 source code and build it so I can package my projects for Linux ARM. I opened the 2DSidescrollerExample and built it for Linux. Once finis… --- ## [How integrating a third-party framework into iOS Unreal Engine project in Xcode works?](https://forums.unrealengine.com/t/how-integrating-a-third-party-framework-into-ios-unreal-engine-project-in-xcode-works/412646)
**Author:** [@bariscavusoglu](https://forums.unrealengine.com/u/bariscavusoglu)\ **Replies:** 0\ **Last updated:** [December 19, 2017, 12:34pm UTC](https://forums.unrealengine.com/t/how-integrating-a-third-party-framework-into-ios-unreal-engine-project-in-xcode-works/412646 "2017-12-19T12:34:23Z")
I have been trying to understand how getting input from a 3th party app on an IOS mobile app works. It can either be an input from any app (like facebook) or any information from the phone (like current UTC time, weather… --- ## [How can I use iOS Libraries?](https://forums.unrealengine.com/t/how-can-i-use-ios-libraries/285786)
**Author:** [@mze](https://forums.unrealengine.com/u/mze)\ **Replies:** 4\ **Last updated:** [November 23, 2017, 1:42pm UTC](https://forums.unrealengine.com/t/how-can-i-use-ios-libraries/285786 "2017-11-23T13:42:25Z")
I’m using a mac to write a game for iOS, I’m trying to use UIKit from xCode however when I import the framework I receive the error that it can’t be found. "Shell Script Invocation Error ‘UIKit/UIAlertView.h’ file not fo… --- ## [Can't include boost libraries](https://forums.unrealengine.com/t/cant-include-boost-libraries/382450)
**Author:** [@jobim](https://forums.unrealengine.com/u/jobim)\ **Replies:** 1\ **Last updated:** [August 18, 2017, 1:09pm UTC](https://forums.unrealengine.com/t/cant-include-boost-libraries/382450 "2017-08-18T13:09:49Z")
Hi, I’m trying to use the Boost libraries within Unreal, but I always get the error Cannot open source file "boost/interprocess/allocators/allocator.hpp" and so on. This is my build file using System.IO; using Unre… --- ## [ARKit: UE4-MetalRHI.dylib is missing, can't compile editor in Xcode Beta](https://forums.unrealengine.com/t/arkit-ue4-metalrhi-dylib-is-missing-cant-compile-editor-in-xcode-beta/399221)
**Author:** [@anonymous\_user\_f8c945b8](https://forums.unrealengine.com/u/anonymous_user_f8c945b8)\ **Replies:** 9\ **Last updated:** [July 31, 2017, 11:03pm UTC](https://forums.unrealengine.com/t/arkit-ue4-metalrhi-dylib-is-missing-cant-compile-editor-in-xcode-beta/399221 "2017-07-31T23:03:51Z")
Thank you! I’m still getting this error: ERROR: UBT ERROR: Failed to produce item: /UnrealEngine-dev-ar-kit/Engine/Binaries/Mac/UE4Editor.app/Contents/MacOS/UE4Editor-MetalRHI.dylib After updating the renderComman… --- ## [Linker error with C++ std lib on Linux](https://forums.unrealengine.com/t/linker-error-with-c-std-lib-on-linux/399040)
**Author:** [@anonymous\_user\_4a1407a31](https://forums.unrealengine.com/u/anonymous_user_4a1407a31)\ **Replies:** 1\ **Last updated:** [July 18, 2017, 6:07pm UTC](https://forums.unrealengine.com/t/linker-error-with-c-std-lib-on-linux/399040 "2017-07-18T18:07:48Z")
I am trying to include a library of my own functions in my Unreal project. I can successfully link the library dynamically, however attempting to use any functions which utilise std::string and other parts of the standar… --- ## [New project doesn't compile in Windows 7 (4.16)](https://forums.unrealengine.com/t/new-project-doesnt-compile-in-windows-7-4-16/399875)
**Author:** [@143258](https://forums.unrealengine.com/u/143258)\ **Replies:** 1\ **Last updated:** [July 9, 2017, 9:31am UTC](https://forums.unrealengine.com/t/new-project-doesnt-compile-in-windows-7-4-16/399875 "2017-07-09T09:31:42Z")
I solved the problem somehow. Hi, I have a problem with Unreal Engine 4.16 a new top down project(c++) doesn’t compile. Unreal can’t find the file ws2\_32.lib. I don’t have a idea where I should find this file. This is… --- ## [How can I share a library module between projects?](https://forums.unrealengine.com/t/how-can-i-share-a-library-module-between-projects/306324)
**Author:** [@kamrann](https://forums.unrealengine.com/u/kamrann)\ **Replies:** 3\ **Last updated:** [February 16, 2017, 8:07am UTC](https://forums.unrealengine.com/t/how-can-i-share-a-library-module-between-projects/306324 "2017-02-16T08:07:52Z")
I have some code (UObject-derived classes, helper functions, etc) which I want to reuse in multiple projects. I am sure this must be a common requirement, but am struggling to find any explanation or example of how to do… --- ## [Using 3rd party libraries in cross-platform way](https://forums.unrealengine.com/t/using-3rd-party-libraries-in-cross-platform-way/374802)
**Author:** [@anonymous\_user\_24cff47d](https://forums.unrealengine.com/u/anonymous_user_24cff47d)\ **Replies:** 2\ **Last updated:** [November 22, 2016, 4:02am UTC](https://forums.unrealengine.com/t/using-3rd-party-libraries-in-cross-platform-way/374802 "2016-11-22T04:02:01Z")
It looks like using 3rd party libraries involves building Windows DLLs and lib files and linking to them. However I need to generate Windows as well Linux builds of the game (my library is also portable cross-platform). … --- ## [App Rejected from Play Store, vulnerable version of libpng](https://forums.unrealengine.com/t/app-rejected-from-play-store-vulnerable-version-of-libpng/372236)
**Author:** [@1PercentPlankton](https://forums.unrealengine.com/u/1PercentPlankton)\ **Replies:** 9\ **Last updated:** [November 21, 2016, 3:52pm UTC](https://forums.unrealengine.com/t/app-rejected-from-play-store-vulnerable-version-of-libpng/372236 "2016-11-21T15:52:20Z")
Hi, My app is ready for beta testing, but Google Play rejected it with the following message: Vulnerability Libpng library The vulnerabilities were fixed in libpng v1.0.66, v.1.2.56, v.1.4.19, v1.5.26 or higher. Y… --- ## [Linker error LNK2019 and LNK2001](https://forums.unrealengine.com/t/linker-error-lnk2019-and-lnk2001/358108)
**Author:** [@Muffinlasher](https://forums.unrealengine.com/u/Muffinlasher)\ **Replies:** 0\ **Last updated:** [May 21, 2016, 11:42am UTC](https://forums.unrealengine.com/t/linker-error-lnk2019-and-lnk2001/358108 "2016-05-21T11:42:56Z")
Hi Guys and Girls I am currently trying to use the Accidental Noise Library and i am getting these errors. It confusing me as it is connecting to the .lib file but to be honest im not totally sure what the error is tell… --- ## [How do I use a downloaded library?](https://forums.unrealengine.com/t/how-do-i-use-a-downloaded-library/302413)
**Author:** [@anonymous\_user\_c6e04c521](https://forums.unrealengine.com/u/anonymous_user_c6e04c521)\ **Replies:** 2\ **Last updated:** [April 19, 2016, 8:07pm UTC](https://forums.unrealengine.com/t/how-do-i-use-a-downloaded-library/302413 "2016-04-19T20:07:03Z")
I’ve had a problem that I’ve been trying to solve for weeks. Google hasn’t been any help so it’s about time I ask on the forum. I downloaded a C++ library called RogueLikeLib that consists of a single folder with header… --- ## [How to Load .h Files From an External .lib?](https://forums.unrealengine.com/t/how-to-load-h-files-from-an-external-lib/351709)
**Author:** [@RedVonix](https://forums.unrealengine.com/u/RedVonix)\ **Replies:** 0\ **Last updated:** [March 25, 2016, 6:35am UTC](https://forums.unrealengine.com/t/how-to-load-h-files-from-an-external-lib/351709 "2016-03-25T06:35:43Z")
I have added a library to our project (specifically the Thrift library). Everything appears to be good, however when compiling, the compiler can never find the header files in the libthrift.lib library. To load the libr… --- ## [Adding libraries (.lib) causes errors](https://forums.unrealengine.com/t/adding-libraries-lib-causes-errors/345916)
**Author:** [@anonymous\_user\_85f117731](https://forums.unrealengine.com/u/anonymous_user_85f117731)\ **Replies:** 0\ **Last updated:** [January 31, 2016, 1:15am UTC](https://forums.unrealengine.com/t/adding-libraries-lib-causes-errors/345916 "2016-01-31T01:15:27Z")
Hello, I am having this problem where i cant add libraries to my project This is the code: And this are the errors: I have had this problem for a week, i tried googling it during that week but didnt find any useful… --- ## [Android ndk library in ue4 c++ "sensor.h"](https://forums.unrealengine.com/t/android-ndk-library-in-ue4-c-sensor-h/338317)
**Author:** [@kbit](https://forums.unrealengine.com/u/kbit)\ **Replies:** 2\ **Last updated:** [November 13, 2015, 3:07pm UTC](https://forums.unrealengine.com/t/android-ndk-library-in-ue4-c-sensor-h/338317 "2015-11-13T15:07:21Z")
greetings how can i add android ndk sensor library to my c++ code? #include \ do i need to create a link to it? what kind of parent class i should make for c++ to get the sensor data so blueprint ca… --- ## [A bit of order about using external libraries](https://forums.unrealengine.com/t/a-bit-of-order-about-using-external-libraries/331183)
**Author:** [@mauriliodc](https://forums.unrealengine.com/u/mauriliodc)\ **Replies:** 2\ **Last updated:** [November 2, 2015, 8:23pm UTC](https://forums.unrealengine.com/t/a-bit-of-order-about-using-external-libraries/331183 "2015-11-02T20:23:16Z")
Hello everyone. I have successfully added to my project a couple of libraries like: opencv, xsens and libnoise. I followed this guide OPENCV UE4 and everything works like a charm, but i have a couple of questions becau… --- ## [How to implement libcat library in RakNet with UE4?](https://forums.unrealengine.com/t/how-to-implement-libcat-library-in-raknet-with-ue4/326117)
**Author:** [@AlastaAr\_1](https://forums.unrealengine.com/u/AlastaAr_1)\ **Replies:** 1\ **Last updated:** [July 22, 2015, 11:55am UTC](https://forums.unrealengine.com/t/how-to-implement-libcat-library-in-raknet-with-ue4/326117 "2015-07-22T11:55:33Z")
I’m trying to make secure connection between server and client using this tutorial: Secure Connections Everything goes good until linking libraries to the game project - BuildTool can’t link library big\_x64(libcat depe… --- ## [Duplicate local variable name breaks Blueprint Function Libraries](https://forums.unrealengine.com/t/duplicate-local-variable-name-breaks-blueprint-function-libraries/292090)
**Author:** [@polymatheddy](https://forums.unrealengine.com/u/polymatheddy)\ **Replies:** 2\ **Last updated:** [December 15, 2014, 2:30pm UTC](https://forums.unrealengine.com/t/duplicate-local-variable-name-breaks-blueprint-function-libraries/292090 "2014-12-15T14:30:01Z")
When using Blueprint Function Libraries, creating various functions in the same library that all implement a local variable with the same name, deleting that local variable in one function effectively deletes it in all o… --- ## [Efficient Packaging](https://forums.unrealengine.com/t/efficient-packaging/283365)
**Author:** [@Cristian\_4](https://forums.unrealengine.com/u/Cristian_4)\ **Replies:** 1\ **Last updated:** [November 25, 2014, 3:38pm UTC](https://forums.unrealengine.com/t/efficient-packaging/283365 "2014-11-25T15:38:34Z")
I would like to know how to package a project so I can play it in computers without Unreal Engine Editor. In Unreal 3 the installer of the game was created automatically, but I do not see it happening in Unreal 4. I hav… --- ## [Anyone know of any isometric terrain open source libraries that are C++?](https://forums.unrealengine.com/t/anyone-know-of-any-isometric-terrain-open-source-libraries-that-are-c/298614)
**Author:** [@CJ31387](https://forums.unrealengine.com/u/CJ31387)\ **Replies:** 0\ **Last updated:** [November 10, 2014, 8:47am UTC](https://forums.unrealengine.com/t/anyone-know-of-any-isometric-terrain-open-source-libraries-that-are-c/298614 "2014-11-10T08:47:52Z")
I’m looking for a good library to get isometric terrain like old games like Sim City 2000 and like this Just need to be able to have terrain like this and ability to raise and lowe… [Next page](https://forums.unrealengine.com/tag/libraries/1400.md?match_all_tags=true&page=1&tags%5B%5D=libraries)