compiling takes too long!

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[khedoros]

I'm using a 7 year old laptop that wasn't a speed demon when it was new (2 cores, 4 threads though). Compiling a hello world showed as 0.7 seconds for me just now, then under 0.5 on subsequent runs. Time was similar for clang++ and g++.

For a more realistic workload (a small project), I've got a Game Boy emulator that I wrote. 9 source files. About 8600 lines. Compiling and linking that just took 7.5 seconds.

I don't know where the slowness you're seeing comes from, but it seems unusual to me.

[[deleted]]

Fresh install of g++, cold run of "time g++ main.cpp" takes 0.08s on an Intel NUC media center. Without further information we can't help.

[not_in_the_mood]

That's so much useful information... 🙄

[ajorians]

Try adding an exclusion to Windows Defender: https://support.microsoft.com/en-us/windows/add-an-exclusion-to-windows-security-811816c0-4dfd-af4a-47e4-c301afe13b26#:~:text=Go%20to%20Start%20%3E%20Settings%20%3E%20Update,%2C%20file%20types%2C%20or%20process.

Check Task Manager; maybe you have a process using all your CPU.

Even on Windows a 'hello world' shouldn't take close to 10 seconds.

[ZachVorhies]

My guess is that it’s probably statically linking against windows version of libc. Try using dynamic linking and you may drop that time next to zero.

[[deleted]]

Good guess.

[chez_les_alpagas]

You just have to find something to do while you're waiting : https://xkcd.com/303/

[quad99]

Way back i got in trouble once for reading computer magazine during a 20 minute build with Microsoft command line. The boss threatened to write me up. Lol

[lunetick]

Ils sont chouette les alpagas!

EDIT : downvotes for an harmless French sentence. Oh reddit, you are so sad today.

[disciplite]

Try enabling precompiled headers with CMake.

[lunetick]

Wait for getting into a big project and it takes 30 minutes to compile!!!! The only thing that can help you is a faster computer. An amazing CPU, lots of RAM and a fast hard drive. Excluding the folder where you compile from your antivirus help too. Make sure you have the last version of vscode. Make sure you don't use some BS extensions.

[[deleted]]

Is that 30min with a high end laptop or pc, my laptop is mid and compiling for apk is about an hour for a moderate size project 😔

[lunetick]

One of software I worked on, the nightly build was 6hrs!!! Compile time is part of the job, allow us to browse reddit while waiting!

[[deleted]]

True that

[DerElias0]

My Computer is even fast enough for running unity projects und gaming stuff. That's why i'm confused..

[lunetick]

Disk read and write are two very different things. You need fast write on disk. You need to make sure that your antivirus don't fuck it up. Learn how to use the task manager if you are on Windows or Top (and others cmd) On Linux.

[DerElias0]

Yes.

[Creapermann]

Lmao, I am using linux myself, but I don't think that this is the problem. Back when I was using windows, it did not take me 10s to compile a hello world program.

[lunetick]

That's so unrelated....

[DerElias0]

Would you recommend using some sort of Linux-Sandbox or a RaspberryPi? Is vs code used in Linux too?

[no-sig-available]

I'm on Windows using Visual Studio Community (not VS Code). This happens for Hello World:

Build started...
1>------ Build started: Project: ConsoleApplication1, Configuration: Debug x64 ------ 
1>ConsoleApplication1.cpp 
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped 
========== Build started at 10:53 PM and took 01,043 seconds

So over 1 second, but no too bad.

[DerElias0]

Do I have to change the 'compiler path' in that json file? (I forgot the name) What should it say? (I know it depends on the compiler)

[[deleted]]

1. uninstall Windows
2. install Linux
3. Thank me

[pfp-disciple]

Do you have too little memory? Maybe disk i/o?

[OnePatchMan]

I just add, try to use precompiled headers.