SDL2 not found in 4.0.9

[キャロウ マーク]

My build using the Docker image was working fine with 4.0.7. After update to 4.0.9 it has broken. I am getting errors during CMake config:

CMake Error at /usr/share/cmake-3.22/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find SDL2 (missing: SDL2_LIBRARY SDL2_INCLUDE_DIR)
Call Stack (most recent call first):
  /usr/share/cmake-3.22/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE)
  cmake/modules/FindSDL2.cmake:206 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  tests/loadtests/CMakeLists.txt:35 (find_package)

I tried changing `-s USE_SDL=2` to `--use-port=sdl2` but the problem still happens. I see nothing in the changelog to indicate any change regarding use of the SDL2 port.

Anyone know what changed and how to workaround it?

Regards

    -Mark

[Sam Clegg]

Apologies, I should have mentioned this in the changelog.

The breakage was caused by https://github.com/emscripten-core/emscripten/pull/24306, and I've just uploaded a PR to update the changelog: https://github.com/emscripten-core/emscripten/pull/24395

Basically, with 4.0.9 and above you now need to install SDL2 and SDL3 somehow before cmake can detect their presence.   See the above PR s for more on this.

cheers,

sam

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[キャロウ マーク]

On May 23, 2025, at 0:20, 'Sam Clegg' via emscripten-discuss <emscripte...@googlegroups.com> wrote:

Apologies, I should have mentioned this in the changelog.

The breakage was caused by https://github.com/emscripten-core/emscripten/pull/24306, and I've just uploaded a PR to update the changelog: https://github.com/emscripten-core/emscripten/pull/24395

Basically, with 4.0.9 and above you now need to install SDL2 and SDL3 somehow before cmake can detect their presence.   See the above PR s for more on this.

Thank you Sam for the information and for updating the changelog. I have got this part of the build working again. Another issue has surface about which I’ll start a new thread.

Regards

    -Mark