MSVC and CE

The eagle-eyed among you may have noticed a change in the way compiling using Microsoft Visual Studio compilers works on Compiler Explorer. Short version: we have gained execution support (yay), but lost library support (boo). We’re working on the latter.

So, what happened? In order to explain, here’s some background:

Background

Compiler Explorer runs on Linux infrastructure. My day job for the last two decades has meant developing on, and for, Linux or Linux-based systems. As a result, CE itself uses Linux. When folks originally asked for Windows compiler support, I put it off for a while. A few years after, a friend helped me just about coerce and fudge a few versions of MSVC to run under WINE, but it’s not perfect and to this day causes us issues.

Filed under: Coding
Posted at 20:00:00 BST on 11th July 2024.

Compiler Explorer, LLC

It’s been over a year since I updated my blog; and I’ve been making some pretty fundamental changes to the infrastructure I host it all on. So this is more of a test post than a hugely informative one.

That said; the reason I’be been making those changes is because, a couple of weeks ago I formed “Compiler Explorer LLC” as an Illinois-based corporation.

Does this mean Compiler Explorer is going to be a business now?!

Filed under: Personal Coding Blog
Posted at 00:00:00 GMT on 18th March 2024.

Happy 10th Birthday Compiler Explorer!

Today is Compiler Explorer’s 10th Birthday:

commit 15ea5e164b55c2b5ee0d3b432e3984b8f361afd2
Author: Matt Godbolt <matt@godbolt.org>
Date:   Tue May 22 21:07:40 2012 -0500

    Initial import of GCC-Explorer

Ten years ago I got permission to open source a little tool called GCC Explorer. I’d developed it over a week or so of spare time at my then-employer DRW in node.js, and the rest, as they say, is history.

Filed under: Personal Coding Blog
Posted at 15:45:00 BST on 22nd June 2022.

Recording and editing Two's Complement

Like so many, I started a podcast – Two’s Complement – during the pandemic, with my good friend and colleague Ben Rady.

Some folks asked how we made it sound so “professional”, and so I’m sharing here how we do it.

Microphone and setup

Most importantly: get everyone to record their audio locally. Audacity is free and works perfectly for this. Make sure you test that you can’t hear each other’s sound in the mix. Start recording, make sure the right microphone is in use by tapping it and observing the wiggly lines and then get others to make noise and ensure you hear them but don’t see the wiggly lines on your side.

Filed under: Personal
Posted at 23:30:00 GMT on 22nd March 2021.

C++ and passing by value

I was recently responding to some code review feedback and it occurred to me I could write it up for this blog. Which also means I start 2021 with a blog post, not something I’ve done in ages.

The question was around why I passed an non-trivial object by value to a function. The recipient function was going to copy the object, and the short version is “clang tidy complains if you don’t pass by value and move”.

For the longer version, consider this super simple example:

Filed under: Coding
Posted at 17:35:00 GMT on 2nd January 2021.

CppCon 2019 Trip Report

I’m on my way back from the 2019 CppCon conference and my head is buzzing with ideas! What an amazing experience!

The venue

This was the first year CppCon was based out of a new venue, the Gaylord Rockies in Aurora, Colorado. First up: the Gaylord is huge! It was clear we had outgrown the previous venue in Bellevue, but there’s plenty of room to expand at the new venue. This changed the feel of the conference a little: I literally didn’t leave the hotel from Sunday evening through to Friday evening.

Most of the attendees also stayed in the hotel, which meant more opportunities to bump into other attendees. Food was good, but not exceptional, but, boy it was expensive! They know they have a captive audience!

Filed under: Coding
Posted at 00:00:00 BST on 22nd September 2019.

Live streaming on YouTube

Hey all! Since last time I’m glad to say I’ve landed a new job (more info to follow), and I’ll be starting in June.

Til then I’ve been hacking on Compiler Explorer, and as per the announcement on my Patreon page, I’ve been working on executing arbitrary user code! We’re really close to being able to turn that on!

I’ve been live streaming a lot of the development process, and you can see the prior streams in this playlist. If you want to join me live, I’d suggest subscribing for notifications on my YouTube channel. It’s been a lot of fun, and I’ll miss it once I start my job, but I’m also super excited about that!

Filed under: Blog
Posted at 18:35:00 BST on 18th May 2019.

Life update

Hello friends.

A quick note on a big change: the office I worked at was closed on Tuesday and I was let go. All is well: my team and I were well-treated and I have plenty of opportunities to investigate.

This does mean I have some spare time, and even once I get a new job I plan on spending all of May working on Compiler Explorer, and on finishing off my video series.

Filed under: Blog
Posted at 02:45:00 BST on 26th April 2019.

About Matt Godbolt

Matt Godbolt is a C++ developer working in Chicago for Aquatic. Follow him on Mastodon.