error: '__m256d' about chrono

[Milad-Rakhsha]

I am aware of this issue and I believe that this has to do with the CMake configuration for AVX support. So, at the configuration stage in CMAKE it is found that your system does support AVX. Consequently, CHRONO_HAS_AVX is defined in the build/chrono/ChConfig.h, which is included in ChMatrix.h. This allows for vectorized matrix multiplications. However, it seems like your system does not find the immintrin.h for some reason at the build stage. Could you see if this system header file is available in your compiler's include? I think a work around is to add the path of the immintrin.h to your CPATH.
By the way what commit produces this error?

[coopergeodynamics]

Hi! I'm having a similar problem of being unable to build Chrono projects and not able to resolve it. I just installed Chrono on my Mac (Big Sur).

Same errors about expected characters. For example:

/usr/local/include/chrono/core/ChMatrix.h:129:93: error: expected '>'
/usr/local/include/chrono/core/ChMatrix.h:129:48: note: to match this '<'
using ChRowVectorRef = Eigen::Ref<Eigen::Matrix<double, 1, Eigen::Dynamic, Eigen::RowMajor>>;
^
/usr/local/include/chrono/core/ChMatrix.h:129:93: error: expected a type
using ChRowVectorRef = Eigen::Ref<Eigen::Matrix<double, 1, Eigen::Dynamic, Eigen::RowMajor>>;
^
/usr/local/include/chrono/core/ChMatrix.h:129:93: error: expected '>'
/usr/local/include/chrono/core/ChMatrix.h:129:34: note: to match this '<'

I tried to point to immintrin.h with a symbolic link within the include folder, but that didn't seem to help.

[rserban]

Sorry for the late reply. Did you resolve this issue?
If not, could please try to disable SIMD support during CMake configuration (uncheck USE_SIMD)?

[coopergeodynamics]

I didn't resolve the issue and the suggestion above unfortunately didn't help. Any other thoughts?