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Overhaul CMake build rules for AMD and UMFPACK. #587

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Avoid manually preprocessing the source files. Some compiler flags can easily be missed which can lead to compilation issues with the preprocessed sources.

Instead, use object libraries to build the same source files with different flags.

Potentially fixes the build issues described in #578.

@mmuetzel mmuetzel mentioned this pull request Sep 27, 2024
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@mmuetzel mmuetzel changed the title Overhaul CMake build ruled for AMD and UMFPACK. Overhaul CMake build rules for AMD and UMFPACK. Sep 27, 2024
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The build error on the macOS runners doesn't look related to the changes from this PR.

Homebrew updated their HDF5 package recently: Homebrew/homebrew-core@961f7dc

And it looks like ElmerFEM is not the only "victim" of that change: Homebrew/homebrew-core#170959 (comment)

Let's hope they'll find a proper solution for this issue.

@mmuetzel mmuetzel mentioned this pull request Sep 28, 2024
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mmuetzel commented Oct 1, 2024

All CI runners have passed in the last run.
It might be easier for you to check whether this resolves the issue described in #578 after it has been merged. But even if it doesn't, it is dangerous to compile preprocessed sources with different preprocessor and compiler flags. (For sure, at least -fopenmp is missing when preprocessing the original sources. Potentially other flags are different, too.) So, some change addressing that issue is needed in any case.

Is it ok to merge this?

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@juhanikataja: Does this change fix the issue you were seeing when building the bundled UMFPACK with a Cray compiler?

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Overhaul CMake build rules for AMD and UMFPACK.
de88900 
Avoid manually preprocessing the source files. Some compiler flags can
easily be missed which can lead to compilation issues with the
preprocessed sources (see ElmerCSC#578).

Instead, use object libraries to build the same source files with
different flags.

Potentially fixes the build issues described in ElmerCSC#578.
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