[debian-mysql] Bug#920365: mariadb_config: improve cross compilation support

[Sergei Golubchik]

Hi, Helmut!

So, there's nothing for us (upstream) to do here?
pkg-config just works and you already have the script?

Regards,
Sergei

On Aug 16, Helmut Grohne wrote:
> Hi Sergei,
> 
> On Fri, Aug 16, 2019 at 05:41:14PM +0200, Sergei Golubchik wrote:
> > Ok. Two thoughts. First, libmariadb comes with mariadb.pc pkg-config
> > file. Does it have all you need to build? If not, we can, perhaps, add
> > missing info to it.
> 
> The pkg-config part works great for cross compilation. There is nothing
> you need to change here. It really just works. The problem is that not
> everything uses pkg-config. Some downstreams prefer using mariadb_config
> or more commonly mysql_config. Deprecating mysql_config and telling
> everyone to use pkg-config could be part of a long-term solution and
> I've done that to some packages (e.g. collectd, courier-authlib,
> lighttpd, rsyslog, sphinxsearch, ulogd2), but that's a lot of effort to
> get there.
> 
> One package that is particularly hard to convert to using pkg-config is
> mysql-connector-c++. See
> https://sources.debian.org/src/mysql-connector-c++/1.1.12-4/FindMySQL.cmake/.
> Please try converting this to pkg-config.
> 
> > Second, binary mariadb_config does nothing else but printing a set
> > of string. If there's no other choice, we could consider providing a
> > shell script with the same functionality too.
> 
> Exactly. The script I attached to the bug submission converts
> mariadb_config into a shell script that behaves exactly the same. You
> point it at mariadb_config and you get back a shell script that
> behaves exactly the same way. The major difference here is that the
> shell script will work for cross compiling downstreams that happen to
> not use pkg-config.
> 
> Helmut