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Compile using cpp backend #506
Description
I want to use pixie in a nim program that can only be compiled with the cpp backend.
However, pixie cannot be compiled using this cpp backend on my system (mac OS 12).
For example,
nim cpp --gc:orc -d:release -r tests/all.nim
results in multiple errors like
.cache/nim/all_r/@m..@ssrc@spixie@ssimd@savx2.nim.cpp:197:5: error: no matching function for call to '_mm256_store_si256'
_mm256_store_si256(((void*) (p)), colorVec);
^~~~~~~~~~~~~~~~~~
/Library/Developer/CommandLineTools/usr/lib/clang/12.0.0/include/avxintrin.h:3277:1: note: candidate function not viable: cannot convert argument of incomplete type
'void *' to '__m256i *' for 1st argument
_mm256_store_si256(__m256i *__p, __m256i __a)
Anyway to get it compiling using nim cpp?
Activity
iffy commentedon Oct 13, 2022
Try
nim cpp -d:pixieNoSimd -d:zippyNoSimd -r tests/all.nimguzba commentedon Apr 13, 2023
We run all of our tests using
nim cppfor every commit so I can be confident C++ is not the issue here. The real question is why does it not work on your computer which is unfortunately much harder to answer from far away.guzba commentedon Apr 13, 2023
Yeah this is something Mac specific.
guzba commentedon Apr 13, 2023
It appears clang on Mac requires pointers to be cast to something like
const __m128i_u *. This is a made-up requirement, serves no purpose and is dumb. Fortunately no other compilers require it so I'm not eager to do anything here.xTrayambak commentedon Apr 18, 2025
Sorry for the late reply but this isn't a Mac-specific issue. I'm getting the same error with Clang on Linux as well.
treeform commentedon May 3, 2026
Thank you for the issue. This has been fixed with #577 .