Bug#989076: libblis-dev: libblis*-dev packages do not provide an alternative for blas.pc

[Drew Parsons]

Package: libblis-dev
Version: 0.8.0-1
Severity: important

The BLAS implementations (reference, openblas, atlas) all provide
an alternative for blas.pc, slaved to the alternative for
libblas.so-<arch>.

But the libblis*-dev packages do not provide this alternative for
blas.pc.

This means that libblis-dev cannot be considered as a drop-in
alternative BLAS implementation.

Client packages that use pkg-config to configure their BLAS support
are broken by BLIS.

Hence the libblis*-dev packages need to provide a blas.pc file and
include it in the alternatives configuration.



-- System Information:
Debian Release: 11.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-6-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libblis-dev depends on:
ii  libblis-openmp-dev   0.8.0-1
ii  libblis-pthread-dev  0.8.0-1
ii  libblis3             0.8.0-1

libblis-dev recommends no packages.

libblis-dev suggests no packages.

-- no debconf information