Painful installation on MacOS

[jonathan-laurent]

Painful installation on MacOS

[anentropic]

if I delete the symlinks from above and try the instruction from the PR mentioned:

opam pin -n git+https://github.com/mseri/owl.git#arm64 --with-version=1.1.0
PKG_CONFIG_PATH="/opt/homebrew/opt/openblas/lib/pkgconfig" opam install owl.1.1.0

then this works.

[mseri]

This should be solved if #609 is merged and released.

A slightly more straightforward option is to use macports, with that it just works on intel, no env variable needed.

[anentropic]

The solution from OP did not work for me

I'm on M1 mac so the homebrew paths are different

so I changed these to the paths that exist:

ln -s /opt/homebrew/Cellar/gcc/12.2.0/lib/gcc/12/libquadmath.0.dylib /usr/local/lib/libquadmath.0.dylib
ln -s /opt/homebrew/Cellar/gcc/12.2.0/lib/gcc/12/libgcc_s.1.1.dylib /usr/local/lib/libgcc_s.1.1.dylib

but I still get the same error

# No package 'openblas' found
# ++ pkg-config --libs openblas
# Package openblas was not found in the pkg-config search path.
# Perhaps you should add the directory containing `openblas.pc'
# to the PKG_CONFIG_PATH environment variable
# No package 'openblas' found
# + cc test.c
# test.c:2:10: fatal error: 'cblas.h' file not found
# #include <cblas.h>
#          ^~~~~~~~~
# 1 error generated.

[nilsbecker]

fwiw, on my Intel mac with homebrew the above solution does not work. maybe expected since it seems to be targeted at M1 macs. i also tried a modified version with PKG_CONFIG_PATH=/usr/local/opt/openblas/lib opam install owl.1.1.0 which failed finding libquadmath.0.dylib. on my machine that shared lib resides in /usr/local/gfortran/lib, installed by homebrew as well