# \#compiler **URL:** https://forums.unrealengine.com/tag/compiler/706.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Clang Error LNK2019 From FPlatformTime::Seconds ( )](https://forums.unrealengine.com/t/clang-error-lnk2019-from-fplatformtime-seconds/2700571)
**Author:** [@loh0123](https://forums.unrealengine.com/u/loh0123)\ **Replies:** 0\ **Last updated:** [February 18, 2026, 1:07pm UTC](https://forums.unrealengine.com/t/clang-error-lnk2019-from-fplatformtime-seconds/2700571 "2026-02-18T13:07:35Z")
I try to switch to clang compiler on UE 5.7. It compile on first time but after add one line of FPlatformTime::Seconds ( ) it get compile error I follow Use Clang to Build Microsoft Platforms in Unreal Engine | Unreal E… --- ## [How to use custom compiler options?](https://forums.unrealengine.com/t/how-to-use-custom-compiler-options/409262)
**Author:** [@broly](https://forums.unrealengine.com/u/broly)\ **Replies:** 7\ **Last updated:** [March 19, 2025, 1:01am UTC](https://forums.unrealengine.com/t/how-to-use-custom-compiler-options/409262 "2025-03-19T01:01:49Z")
I need specify some options for C++ compiler, such as /std:c++latest. But can’t get access to this via .build.cs. Are there ways to specify this? --- ## [Building Unreal Engine using different compiler](https://forums.unrealengine.com/t/building-unreal-engine-using-different-compiler/488268)
**Author:** [@karthika\_mcw](https://forums.unrealengine.com/u/karthika_mcw)\ **Replies:** 1\ **Last updated:** [January 16, 2025, 11:26am UTC](https://forums.unrealengine.com/t/building-unreal-engine-using-different-compiler/488268 "2025-01-16T11:26:40Z")
Is it possible to use other compilers (like gcc, icc) instead of Native clang based Linux Toolchain to build Unreal Engine ? If so what is the procedure?, --- ## ["Crash inside platform compiler" error](https://forums.unrealengine.com/t/crash-inside-platform-compiler-error/480880)
**Author:** [@FiresideFilms](https://forums.unrealengine.com/u/FiresideFilms)\ **Replies:** 6\ **Last updated:** [December 10, 2024, 5:13pm UTC](https://forums.unrealengine.com/t/crash-inside-platform-compiler-error/480880 "2024-12-10T17:13:05Z")
Yesterday, our computer crashed, so we had to reinstall Unreal, as well as everything else on the C: drive. Downloaded Epic Games launcher, installed Unreal, tried to open a new project, and got some kind of compiler err… --- ## [Can't build UE 4.27 from source, I've tried every package. (WILL PAY FOR HELP)](https://forums.unrealengine.com/t/cant-build-ue-4-27-from-source-ive-tried-every-package-will-pay-for-help/2147419)
**Author:** [@rent\_treznor](https://forums.unrealengine.com/u/rent_treznor)\ **Replies:** 0\ **Last updated:** [November 23, 2024, 11:32pm UTC](https://forums.unrealengine.com/t/cant-build-ue-4-27-from-source-ive-tried-every-package-will-pay-for-help/2147419 "2024-11-23T23:32:48Z")
I have tried every single package I can, I get errors no mater what. I have reinstalled Visual Studio 2022 multiple times. I am thinking i’m simply missing some obscure package requirement in my installation, but i’ve r… --- ## [cross compile, is the gcc(4.8.5) version too old for most of c++ thirdparty?](https://forums.unrealengine.com/t/cross-compile-is-the-gcc-4-8-5-version-too-old-for-most-of-c-thirdparty/1270583)
**Author:** [@lleeaarr](https://forums.unrealengine.com/u/lleeaarr)\ **Replies:** 1\ **Last updated:** [September 3, 2024, 10:45pm UTC](https://forums.unrealengine.com/t/cross-compile-is-the-gcc-4-8-5-version-too-old-for-most-of-c-thirdparty/1270583 "2024-09-03T22:45:20Z")
When cross compile in Linux with Engine/Extras/ThirdPartyNotUE/SDKs/HostLinux/Linux\_x64/v20\_clang-13.0.1-centos7/x86\_64-unknown-linux-gnu/bin/clang++, the gcc(4.8.5) version is too old for most c++ thirdparty now. #./cl… --- ## [\[Bug report, UE5.2.1, UnrealHeaderTool\] UHT errors on VS output log.](https://forums.unrealengine.com/t/bug-report-ue5-2-1-unrealheadertool-uht-errors-on-vs-output-log/1843741)
**Author:** [@Roy\_Wierer.Seda145](https://forums.unrealengine.com/u/Roy_Wierer.Seda145)\ **Replies:** 0\ **Last updated:** [May 6, 2024, 11:37pm UTC](https://forums.unrealengine.com/t/bug-report-ue5-2-1-unrealheadertool-uht-errors-on-vs-output-log/1843741 "2024-05-06T23:37:47Z")
VS output log (integration logging) is filling up with errors at random times from UnrealHeaderTool lately (UE5.2.1, never did this before). What is this a symptom of? I did not have this issue before on UE5.2.1 and wond… --- ## [Project code compile error](https://forums.unrealengine.com/t/project-code-compile-error/1640158)
**Author:** [@D.A.I.T.O](https://forums.unrealengine.com/u/D.A.I.T.O)\ **Replies:** 0\ **Last updated:** [January 24, 2024, 10:06pm UTC](https://forums.unrealengine.com/t/project-code-compile-error/1640158 "2024-01-24T22:06:40Z")
Good evening everyone. I have a MacBook with the last macOS Ventura 13.4.1 version. I want to take experiment and work with Unreal Engine 4.27.2. But when I try to build C++ project my system is crashed and said that the… --- ## [Fatal error C1060: compiler is out of heap space while compilimg sources](https://forums.unrealengine.com/t/fatal-error-c1060-compiler-is-out-of-heap-space-while-compilimg-sources/367880)
**Author:** [@anonymous\_user\_c91f08fc](https://forums.unrealengine.com/u/anonymous_user_c91f08fc)\ **Replies:** 5\ **Last updated:** [October 12, 2023, 5:35pm UTC](https://forums.unrealengine.com/t/fatal-error-c1060-compiler-is-out-of-heap-space-while-compilimg-sources/367880 "2023-10-12T17:35:55Z")
I am trying to compiling UE4 source code with visual studio2015 (upd2) . Win8 -64bit 10G Ram, total ram usage\<70%. What to do with this problem? --- ## [Ray Tracing - Crash inside the platform compiler](https://forums.unrealengine.com/t/ray-tracing-crash-inside-the-platform-compiler/488623)
**Author:** [@SeanDimension\_1](https://forums.unrealengine.com/u/SeanDimension_1)\ **Replies:** 9\ **Last updated:** [April 19, 2023, 7:54am UTC](https://forums.unrealengine.com/t/ray-tracing-crash-inside-the-platform-compiler/488623 "2023-04-19T07:54:34Z")
Hi there everyone, I’m having some frustrating issues with my UE4 - whenever I turn on Ray Tracing and SkinCache Compile Shaders in a project, the splash loading screen gets to 95% but then crashes during shader compila… --- ## [How to set Target.WindowsPlatform.bUpdatedCPPMacro?](https://forums.unrealengine.com/t/how-to-set-target-windowsplatform-bupdatedcppmacro/736218)
**Author:** [@ImJustAZizolo](https://forums.unrealengine.com/u/ImJustAZizolo)\ **Replies:** 0\ **Last updated:** [December 26, 2022, 10:58am UTC](https://forums.unrealengine.com/t/how-to-set-target-windowsplatform-bupdatedcppmacro/736218 "2022-12-26T10:58:49Z")
Hello, I’m trying to use a third party library inside ue5. For it to compile, I need to add the “Zc\_\_cplusplus” option to the compiler. While going through a file named “VCToolChain.cs” I found out that, the needed opt… --- ## [\[SOLVED\] Scene-\>GetWorld(): Function UActorComponent::GetWorld has no address, possibly due to compiler optimizations](https://forums.unrealengine.com/t/solved-scene-getworld-function-uactorcomponent-getworld-has-no-address-possibly-due-to-compiler-optimizations/403629)
**Author:** [@anonymous\_user\_b7617d6c](https://forums.unrealengine.com/u/anonymous_user_b7617d6c)\ **Replies:** 5\ **Last updated:** [May 6, 2022, 10:47am UTC](https://forums.unrealengine.com/t/solved-scene-getworld-function-uactorcomponent-getworld-has-no-address-possibly-due-to-compiler-optimizations/403629 "2022-05-06T10:47:02Z")
Running into this error when running PIE mode. This is a project from the PACKT book Unreal Engine 4.X By Example. I’m working inside of UE 4.17.1, and it’s quite obvious to me that this book was written for a fairly ear… --- ## [Visual studio compiler wrong path (how to change?)](https://forums.unrealengine.com/t/visual-studio-compiler-wrong-path-how-to-change/398829)
**Author:** [@matan19](https://forums.unrealengine.com/u/matan19)\ **Replies:** 34\ **Last updated:** [March 14, 2022, 1:48pm UTC](https://forums.unrealengine.com/t/visual-studio-compiler-wrong-path-how-to-change/398829 "2022-03-14T13:48:13Z")
Thank you. Solved my question. = w = --- ## [Possible Bug: No Compiler found](https://forums.unrealengine.com/t/possible-bug-no-compiler-found/494561)
**Author:** [@BDC\_Patrick](https://forums.unrealengine.com/u/BDC_Patrick)\ **Replies:** 0\ **Last updated:** [February 5, 2022, 10:12am UTC](https://forums.unrealengine.com/t/possible-bug-no-compiler-found/494561 "2022-02-05T10:12:56Z")
Hi there. I think I stumbled over a Bug in UE5\_EA. It happens in both Situations: a: In the UE5 Launcher, when trying to create a new C++ Project. b: In a created BP Project, when trying to add a new C++ Class. The … --- ## [Compiler question](https://forums.unrealengine.com/t/compiler-question/486112)
**Author:** [@GG1g](https://forums.unrealengine.com/u/GG1g)\ **Replies:** 0\ **Last updated:** [July 12, 2021, 6:17pm UTC](https://forums.unrealengine.com/t/compiler-question/486112 "2021-07-12T18:17:36Z")
How can I switch to Intel C++ and change the optimization level?! --- ## [How To Fix Blueprint If Can't Open Project](https://forums.unrealengine.com/t/how-to-fix-blueprint-if-cant-open-project/462501)
**Author:** [@anonymous\_user\_b220333c](https://forums.unrealengine.com/u/anonymous_user_b220333c)\ **Replies:** 1\ **Last updated:** [March 16, 2020, 10:49pm UTC](https://forums.unrealengine.com/t/how-to-fix-blueprint-if-cant-open-project/462501 "2020-03-16T22:49:39Z")
My editor crashed while testing game and now it always freezes/hangs at 73% when opening the project. The last of the log (Below) mentions a function I have had an issue with for a while. Originally the project would ope… --- ## [CLion with UE 4.20, Command line error D8049](https://forums.unrealengine.com/t/clion-with-ue-4-20-command-line-error-d8049/430179)
**Author:** [@anonymous\_user\_0f59718a](https://forums.unrealengine.com/u/anonymous_user_0f59718a)\ **Replies:** 8\ **Last updated:** [October 25, 2019, 10:18am UTC](https://forums.unrealengine.com/t/clion-with-ue-4-20-command-line-error-d8049/430179 "2019-10-25T10:18:34Z")
I am trying to use UE 4.20 with CLion 2018.1.6 on windows. After generating the project I had an issue with the CMake list, which contained file-paths not compatible with windows (single backslash). I fixed this manually… --- ## [Problems with compilerrights](https://forums.unrealengine.com/t/problems-with-compilerrights/451762)
**Author:** [@anonymous\_user\_be252c631](https://forums.unrealengine.com/u/anonymous_user_be252c631)\ **Replies:** 2\ **Last updated:** [July 11, 2019, 5:02pm UTC](https://forums.unrealengine.com/t/problems-with-compilerrights/451762 "2019-07-11T17:02:31Z")
Dear UE4 commuity, Cant compile project due to problems with rights on my pc. I have no idea how to resolve that problem. I am the sole admin on my pc. Even starting VS 2019 with admin rights didnt’t help. Error: Se… --- ## [ERROR's in Packaging relating to compiling](https://forums.unrealengine.com/t/errors-in-packaging-relating-to-compiling/433887)
**Author:** [@FirebirdjrCJ](https://forums.unrealengine.com/u/FirebirdjrCJ)\ **Replies:** 1\ **Last updated:** [September 16, 2018, 8:22pm UTC](https://forums.unrealengine.com/t/errors-in-packaging-relating-to-compiling/433887 "2018-09-16T20:22:50Z")
Greetings, I have doors in my game project and they work in the simulation test. However, when I run it as a .exe or package the project, my output log comes up with a bunch of errors relating to blueprint compiling. … --- ## [Compiler or UHT not checking everything](https://forums.unrealengine.com/t/compiler-or-uht-not-checking-everything/411081)
**Author:** [@Napoleonite](https://forums.unrealengine.com/u/Napoleonite)\ **Replies:** 2\ **Last updated:** [September 7, 2018, 8:17pm UTC](https://forums.unrealengine.com/t/compiler-or-uht-not-checking-everything/411081 "2018-09-07T20:17:03Z")
I enabled the compiler to throw errors on shadow variable errors: \ \ \ \ **Author:** [@Generica](https://forums.unrealengine.com/u/Generica)\ **Replies:** 4\ **Last updated:** [August 25, 2018, 5:09am UTC](https://forums.unrealengine.com/t/please-help-compiler-error-error-bad-name-index-1-534/426171 "2018-08-25T05:09:16Z") Please help, I don’t know what to do. Almost a year into the game, near the end and I am getting this compiler error. Please someone tell me you know how to fix that. Attaching log also here UATHelper: Packaging (Wi… --- ## [Shader Compiling freezes Unreal Engine](https://forums.unrealengine.com/t/shader-compiling-freezes-unreal-engine/428430)
**Author:** [@Tettey\_Nartey](https://forums.unrealengine.com/u/Tettey_Nartey)\ **Replies:** 3\ **Last updated:** [July 5, 2018, 10:18pm UTC](https://forums.unrealengine.com/t/shader-compiling-freezes-unreal-engine/428430 "2018-07-05T22:18:10Z")
So I just started to make a material, and I wanted to save. As soon as I change the blend mode to translucent, the compiling shaders message window pops up, and starts counting at least 86 to 128 shaders. I thought this … --- ## [Using visual studio enterprise 2017](https://forums.unrealengine.com/t/using-visual-studio-enterprise-2017/416887)
**Author:** [@anon52296348](https://forums.unrealengine.com/u/anon52296348)\ **Replies:** 3\ **Last updated:** [February 11, 2018, 9:42am UTC](https://forums.unrealengine.com/t/using-visual-studio-enterprise-2017/416887 "2018-02-11T09:42:21Z")
I have visual studio enterprise 2017 but when I try to create a script in Unreal I get a warning message saying “compiler not found”. The only way I have found to fix this is to install visual studio community 2017. My t… --- ## ["Missing Event 'x' for Event x from Source: y" compilation error popping up during packaging. How should I fix it?](https://forums.unrealengine.com/t/missing-event-x-for-event-x-from-source-y-compilation-error-popping-up-during-packaging-how-should-i-fix-it/416064)
**Author:** [@Andriucha](https://forums.unrealengine.com/u/Andriucha)\ **Replies:** 1\ **Last updated:** [February 1, 2018, 7:17pm UTC](https://forums.unrealengine.com/t/missing-event-x-for-event-x-from-source-y-compilation-error-popping-up-during-packaging-how-should-i-fix-it/416064 "2018-02-01T19:17:54Z")
Hello, I keep getting this error when packaging my game: LogInit: Display: LogBlueprint: Error: \[Compiler MatchHUD\_BP\] Missing Event 'GetReady' for Event GetReady from Source: /Game/Blueprints/MatchHUD\_BP.MatchHUD\_BP … --- ## [UE4 cant find or work with VS](https://forums.unrealengine.com/t/ue4-cant-find-or-work-with-vs/415926)
**Author:** [@EthanE1](https://forums.unrealengine.com/u/EthanE1)\ **Replies:** 1\ **Last updated:** [January 30, 2018, 9:23pm UTC](https://forums.unrealengine.com/t/ue4-cant-find-or-work-with-vs/415926 "2018-01-30T21:23:57Z")
Hello Im having problems with VS. What ever I choose to do it fails. I looked at previous topics but none of them work for me. I went to Source Code - Accessor and selected every one at least once, but nothing. Im gettin… --- ## [Weird compiler issues](https://forums.unrealengine.com/t/weird-compiler-issues/411682)
**Author:** [@PanzerGamingStudios](https://forums.unrealengine.com/u/PanzerGamingStudios)\ **Replies:** 14\ **Last updated:** [December 23, 2017, 5:49pm UTC](https://forums.unrealengine.com/t/weird-compiler-issues/411682 "2017-12-23T17:49:35Z")
Hey guys so I fixed the testoutcharacter issue so no worries there and the other warnings. Its building right now. However I still come up with 27 errors and I cannot figure out whats going on from here LogInit: Display… --- ## [Please add UPROPERTY(meta = (BindWidget)) support for UWidgetAnimation](https://forums.unrealengine.com/t/please-add-uproperty-meta-bindwidget-support-for-uwidgetanimation/408587)
**Author:** [@Jambax](https://forums.unrealengine.com/u/Jambax)\ **Replies:** 1\ **Last updated:** [November 3, 2017, 2:59am UTC](https://forums.unrealengine.com/t/please-add-uproperty-meta-bindwidget-support-for-uwidgetanimation/408587 "2017-11-03T02:59:14Z")
Consider this a reqeust to add ‘BindWidget’ UPROPERTY support to UWidgetAnimation. This will make it much easier to call UMG widget animations from code, without having to set pointers in Blueprint first! --- ## [ERROR: No 32-bit compiler toolchain found in C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\bin\\cl.exe. Can't get pas this error! Any help is appreciated!](https://forums.unrealengine.com/t/error-no-32-bit-compiler-toolchain-found-in-c-program-files-x86-microsoft-visual-studio-14-0-vc-bin-cl-exe-cant-get-pas-this-error-any-help-is-appreciated/404562)
**Author:** [@anonymous\_user\_dbd7380e1](https://forums.unrealengine.com/u/anonymous_user_dbd7380e1)\ **Replies:** 5\ **Last updated:** [October 30, 2017, 12:05am UTC](https://forums.unrealengine.com/t/error-no-32-bit-compiler-toolchain-found-in-c-program-files-x86-microsoft-visual-studio-14-0-vc-bin-cl-exe-cant-get-pas-this-error-any-help-is-appreciated/404562 "2017-10-30T00:05:28Z")
I am unable to create a new project, or even open an older existing project. Attempted re-installation of MSVS 17 and UE4 4.17, but still can’t get past this. Upon opening a “New Project with NO starter content, Base C… --- ## [Do i have to install visual studio 2017?](https://forums.unrealengine.com/t/do-i-have-to-install-visual-studio-2017/401869)
**Author:** [@anonymous\_user\_9cc4acab](https://forums.unrealengine.com/u/anonymous_user_9cc4acab)\ **Replies:** 2\ **Last updated:** [August 19, 2017, 12:32pm UTC](https://forums.unrealengine.com/t/do-i-have-to-install-visual-studio-2017/401869 "2017-08-19T12:32:32Z")
I am trying to make my first game on unreal engine 4 using c++ and it is asking me to download visual studio 2017 which is 3.44 gb, do I have to? is there an easier alternative or a way around this? --- ## [How to add Other Linker Flags to xcode project?](https://forums.unrealengine.com/t/how-to-add-other-linker-flags-to-xcode-project/384917)
**Author:** [@asqbtcupid](https://forums.unrealengine.com/u/asqbtcupid)\ **Replies:** 1\ **Last updated:** [June 21, 2017, 7:53am UTC](https://forums.unrealengine.com/t/how-to-add-other-linker-flags-to-xcode-project/384917 "2017-06-21T07:53:30Z")
i want to add some linker flags,But i don’t know how to.please help,3Q. [Next page](https://forums.unrealengine.com/tag/compiler/706.md?match_all_tags=true&page=1&tags%5B%5D=compiler)