OpenBLAS dyld error on Big Sur M1

[diekhans (Mark Diekhans)]

port install OpenBLAS +native

gets error: "Library not loaded: @rpath/libgfortran.5.dylib"

when building OpenBLAS on Big Sur M1, however the file is there

/opt/local/lib/gcc-devel/libgfortran.5.dylib: Mach-O 64-bit dynamically linked shared library arm64
/opt/local/lib/libgcc/libgfortran.5.dylib:    Mach-O 64-bit dynamically linked shared library arm64
/opt/local/lib/libgfortran.5.dylib:           Mach-O 64-bit dynamically linked shared library arm64
/opt/local/lib/gcc10/libgfortran.5.dylib:     Mach-O 64-bit dynamically linked shared library arm64

:info:build make[1]: *** [level1] Abort trap: 6
:info:build make[1]: *** Waiting for unfinished jobs....
:info:build dyld: Library not loaded: @rpath/libgfortran.5.dylib
:info:build   Referenced from: /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_OpenBLAS/OpenBLAS/work/xianyi-OpenBLAS-904f9a2/test/./sblat2
:info:build   Reason: image not found
:info:build /bin/sh: line 1:  4444 Abort trap: 6           OPENBLAS_NUM_THREADS=1 OMP_NUM_THREADS=1 ./sblat2 < ./sblat2.dat

[kencu (Ken)]

This was an issue with gcc/libgcc-devel, but these deps were switched to gcc/libcc10 which does not show this issue.

at least, that should be the current defaulting, assuming nothing is broken there.

[diekhans (Mark Diekhans)]

thanks!!

It seems like gcc10 is providing a symlink to the gcc-devel version:

% ls -l /opt/local/lib/*/libgfortran.5.dylib
lrwxr-xr-x  1 root  admin       41 Apr 22 09:31 /opt/local/lib/gcc-devel/libgfortran.5.dylib@ -> /opt/local/lib/libgcc/libgfortran.5.dylib
lrwxr-xr-x  1 root  admin       41 Apr 29 04:34 /opt/local/lib/gcc10/libgfortran.5.dylib@ -> /opt/local/lib/libgcc/libgfortran.5.dylib
-rwxr-xr-x  1 root  admin  1095424 Apr 22 08:54 /opt/local/lib/libgcc/libgfortran.5.dylib*
% port provides /opt/local/lib/*/libgfortran.5.dylib
/opt/local/lib/gcc-devel/libgfortran.5.dylib is provided by: gcc-devel
/opt/local/lib/gcc10/libgfortran.5.dylib is provided by: gcc10
/opt/local/lib/libgcc/libgfortran.5.dylib is provided by: libgcc-devel

will uninstall all and see what happens.

[diekhans (Mark Diekhans)]

removing libgcc-devel gcc10 now produxes

% ls -l /opt/local/lib/*/libgfortran.5.dylib
lrwxr-xr-x  1 root  admin       41 Apr 29 04:34 /opt/local/lib/gcc10/libgfortran.5.dylib@ -> /opt/local/lib/libgcc/libgfortran.5.dylib
-rwxr-xr-x  1 root  admin  1094864 Apr 29 04:08 /opt/local/lib/libgcc/libgfortran.5.dylib*
% port provides /opt/local/lib/*/libgfortran.5.dylib
/opt/local/lib/gcc10/libgfortran.5.dylib is provided by: gcc10
/opt/local/lib/libgcc/libgfortran.5.dylib is provided by: libgcc10

seems like libgcc-develop will overwrite libgcc10

[NicosPavlov]

Should be fixed with changes made in ticket #62727.