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annotate _posts/2024-12-27-github-actions-and-ancient-toolchains.html @ 118:503e22dd6cf5
blog: add (unfinished) series on OMS
I'll update this as I do more research into the inner workings of
OMS. It's much more interesting (and more convoluted) than ASIO
is unfortunately, but it means the blog posts will probably be
more interesting
| author | Paper <paper@tflc.us> |
|---|---|
| date | Sun, 19 Oct 2025 23:15:02 -0400 |
| parents | 06b5c11f33df |
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| rev | line source |
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| 100 | 1 --- |
| 2 layout: post | |
| 3 author: Paper | |
| 4 title: 'GitHub Actions and ancient toolchains' | |
| 5 nowplaying: 'Panchiko - Sodium Chloride' | |
| 6 --- | |
| 7 <span> | |
| 8 CI is wonderful. I use it basically everywhere, and it's nice to get almost immediate | |
| 9 feedback for whether a commit I made was bogus or not. | |
| 10 </span> | |
| 11 <br><br> | |
| 12 <span> | |
| 13 That being said, it's fun to be able to make builds for weird esoteric platforms no | |
| 14 one except me (and maybe | |
| 15 <a class="prettylink" href="https://repellantmold.neocities.org/">Jade</a>) | |
| 16 care about. | |
| 17 </span> | |
| 18 <br><br> | |
| 19 <h3><strong><u>Building for ancient Windows</u></strong></h3> | |
| 20 <span> | |
| 21 MinGW-w64 (the new, modern toolchain for Windows) does not support anything below XP | |
| 22 or systems without SSE2, which means we have to use an older toolchain. Fortunately, | |
| 23 the original MinGW is still very much available, so we can just use its toolchain. | |
| 24 </span> | |
| 25 <br><br> | |
| 26 <span> | |
| 27 This poses a problem though, how are we supposed to compile for subsystems that are | |
| 28 unavailable in the older toolchain? Well, by making a "franken-toolchain" of course! :) | |
| 29 </span> | |
| 30 <br><br> | |
| 31 <span> | |
| 32 What I did was add a configure flag to allow custom CFLAGS during the compilation | |
| 33 of files that need these new headers, and added the new MinGW-w64 headers during that | |
| 34 step. Et voila, it works, and now Schism can be run on as low as Windows 95 or NT 4! | |
| 35 </span> | |
| 36 <br><br> | |
| 37 <h3><strong><u>Building for ancient Mac OS X</u></strong></h3> | |
| 38 <span> | |
| 39 Now this is tricky, in particular because I want to support PowerPC, and these systems | |
| 40 never had a compiler version released that could target old versions on PowerPC. | |
| 41 </span> | |
| 42 <br><br> | |
| 43 <span> | |
| 44 I started by simply targeting Leopard, since it was the easiest. I just bundled together | |
| 45 the compilers from mesopotamian-era Xcode, and built Schism with | |
| 46 <a class="prettylink" href="https://gist.github.com/miniupnp/a8f474c504eaa3ad9135"> | |
| 47 a custom version of SDL 2 patched for Leopard</a>. It worked, and I was satisfied, until | |
| 48 I had an actual user that wanted to run Schism on Tiger. | |
| 49 </span> | |
| 50 <br><br> | |
| 51 <span> | |
| 52 Since the only machine I had on hand was running Panther, I decided to target it instead | |
| 53 of Tiger. Because the compiler version was simply too new, I had to specifically link | |
| 54 against the Leopard libgcc_s instead of the Panther one, and put the newer one in the | |
| 55 application bundle. And <a class="prettylink" href="/media/cheese/macosx-panther-schism.jpg"> | |
| 56 it worked</a>. | |
|
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57 </span> |
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58 <br><br> |
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59 <h3><strong><u>Why?</u></strong></h3> |
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60 <span> |
| 102 | 61 Because doing pointless things are fun, and |
| 62 <a class="prettylink" href="https://youtu.be/o3Zx_q8OVcc">fun things are fun.</a> | |
| 100 | 63 </span> |