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David authored
Usually, contribs do not support runtime handling of partial availability well. Turning this warning into an error has several advantages: - It fixes feature detection for custom build scripts: If a custom build script includes the correct header, the check will now fail to build and replacements will be enabled. This is the case for ffmpeg, for instance. - Even if configure check might not fail, the build will fail for correctly annotated functions, once they are used in the code. This makes it very visible if new partial symbols are added, so that they can be fixed or disabled subsequently. refs #18476
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