[openblas] broken symlinks

[flocke]

Some of the symlinks created inside the PKGBUILD are broken for aarch64.

In line 50 and 51 of the PKGBUILD the following symlinks are created:

$this->bbcode_second_pass_code('', '
ln -s libopenblasp-r$pkgver.so libblas.so
ln -s libopenblasp-r$pkgver.so libblas.so.3
')

This works fine on x86_64, as the library libopenblasp-r0.3.20.so exists there.
But on aarch64, the built library is named differently (libopenblasp_armv8p-r0.3.20.so).
Because of this the two symlinks are broken, which in turn breaks packages depending on those two symlinks (e.g. home-assistant).

My suggestion would be to either directly link against libopenblas.so.3, which is a symlink created during make install that always points to the correct library (on x86_64 as well as aarch64) or use that symlink to resolve the actual library name before linking:

$this->bbcode_second_pass_code('', '
ln -s $(readlink libopenblas.so.3) libblas.so
ln -s $(readlink libopenblas.so.3) libblas.so.3
')