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[PHP] Upgrade GD to 2.3.3 - #2944

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adamziel merged 13 commits into
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gd-2-3-3
Nov 27, 2025
Merged

adamziel merged 13 commits into
trunkfrom
gd-2-3-3

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@adamziel

@adamziel adamziel commented Nov 26, 2025 •

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Motivation for the change, related issues

Upgrades GD version to 2.3.3. The EWWW Image Optimizer relies on GD library features shipped with a more recent GD version than the one bundled with PHP. See nosilver4u/ewww-image-optimizer#377

Implementation details

PHP comes with a bundled GD version 2.1.0. Upgrading to 2.3.3 involves:

  • Downloading and building 2.3.3 as a separate library (living in packages/php-wasm/compile/libgd)
  • Using it while compiling PHP 8.1+ via --with-external-gd
  • Falling back to the bundled libgd==2.1.0 for PHP <= 8.0. These older PHP releases don't seem to be compatible with newer GD and fail to build due to multiple missing symbols, e.g. /root/php-src/ext/gd/gd.c:3536:8: error: use of undeclared identifier 'GD_FLIP_VERTICAL'.

Testing Instructions (or ideally a Blueprint)

CI – we have tests covering gd across all PHP versions.

@adamziel
adamziel marked this pull request as ready for review November 27, 2025 23:05
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adamziel requested a review from a team as a code owner November 27, 2025 23:05
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There's some superficial differences in whitespaces, I'll adjust them in a follow-up.

@adamziel
adamziel merged commit dc68872 into trunk Nov 27, 2025
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@adamziel
adamziel deleted the gd-2-3-3 branch November 27, 2025 23:08
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