[pkg-gnupg-maint] Bug#933713: Bug#933713: libgpg-error-dev: make package fit for cross development

[NIIBE Yutaka]

Hello,

Let me explain that what direction we should go.

On Tue 2020-01-28 13:01:04 +0100, Francois Gouget wrote:
> The only blocker for making libgpg-error-dev Multi-Arch: same is
> gpg-error-config. However gpg-error-config is not needed on Debian
> since there is no need for -I or -L directives; and it has been 
> superseded by gpgrt-config and pkgconfig anyway.

True.

Since 1.33, libgpg-error have distributed new
libgpg-error/src/gpg-error.m4 which can be used with no gpg-error-config
(but gpgrt-config).  In other cases, software which builds with
pkgconfig just uses gpg-error.pc directly.

My intention of keeping gpg-error-config is to support existing system
which depends on old behavior.  New gpgrt-config requires POSIX
compatible Borne shell and I was afraid that there are still some OSes
without POSIX compatible Borne shell, so, it still distributes the old
gpg-error-config.

Daniel Kahn Gillmor <dkg at fifthhorseman.net> wrote:
> I agree that upstream's preferred configuration mechanism
> (gpg-error-config) is not well-suited for the modern multiarch world.

gpg-error-config is shipped for backword compatibility.  When there will
be no packages which use gpg-error-config, it could be removed or for
system with POSIX compatible Borne shell, it could be replaced by
gpgrt-config (symbolic link to gpgrt-config) if needed.

In future release of libgpg-error, gpg-error-config will be a symbolic
link to gpgrt-config at installation (when detected POSIX compatible
Borne shell, or we will ignore system with no POSIX compatible Borne
shell).
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