PointCloudLibrary / PointCloudLibrary/pcl

Merge FindSSE and FindAVX cmake files

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Dominant language
C++
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Description

A cleaner solution might be to unify pcl_find_sse.cmake and pcl_find_avx.cmake, and have a single variable (e.g. ARCH_FLAGS) that contains sse, avx, and march flags, instead of SSE_FLAGS and AVX_FLAGS. But I would say the current state of this PR still works, and in the interest of getting this merged soon I would propose to not do any major changes here.
I think the cmake options PCL_ENABLE_SSE, PCL_ENABLE_AVX, and PCL_ENABLE_MARCHNATIVE give good control over which flags are added.

Originally posted by @mvieth in https://github.com/PointCloudLibrary/pcl/pull/4698#discussion_r678982988

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Research direction

Start by comparing pcl_find_sse.cmake and pcl_find_avx.cmake, then trace the PCL_ENABLE_SSE, PCL_ENABLE_AVX, and PCL_ENABLE_MARCHNATIVE options. The refactor is done when the files share one architecture-flags variable while preserving control over SSE, AVX, and march flags.

Written by the indexing model from the issue text.

Assessment

Tech stack
cmake, cpp
Domain
build-system
Issue type
Refactor
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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