On Fri, Dec 14, 2018 at 11:25 AM Andre Heider <a.hei...@gmail.com> wrote:
> On 14/12/2018 17:53, Dylan Baker wrote: > > Quoting Gert Wollny (2018-12-14 03:44:32) > >> Am Montag, den 10.12.2018, 15:10 -0800 schrieb Dylan Baker: > >> (2) It would be nice if Meson would distribute some default cross build > >> files, currently everybody has to roll its own, and I guess in the end > >> they all look mostly the same. > > > > Please ask your distro to write and distribute the cross files. It's > simply > > impossible for meson to distribute them for a huge number of reasons, but > > basically it boils down to too many distros with too many differences. I > have > > done basically everything I can (personally) to make this easier, > including > > adding support for loading cross files from XDG paths > (/usr/share/meson/cross, > > etc) > > > >> > >> (3) I also noted that with across build one has to set the library > >> install directory manually, because it defaults to the directory used > >> for the build machine - i.e. a i386 cross build on debian amd64 should > >> set the lib install directory on Debian to "lib/i386-linux-gnu" but it > >> sets it to "lib/x86_64-linux-gnu" > > > > There is this issue: https://github.com/mesonbuild/meson/issues/4008 > > > > This is another case that is really hard to handle because of the way > different > > distros have handled installing x86 and x86_64 binaries on the same OS. > To name > > a few: > > debian : lib/$gnu-tri/ > > arch : lib/ + lib32/ > > fedora : lib64/ + lib32/ > > > > I'm sure there are more, but getting that right all of the time is > actually > > pretty hard. I'll look into it. > > It's not just the libdir, there's no real way for a project to provide > all the required cross settings so it works everywhere. Like the > pkg-config binary name for e.g. cross-compiling 32bit binaries. I didn't > find anything user friendly, so I worked around that on another project > [0]. And I'm sure there's more. > > While all that is doable, it is annoying. Isn't there any way for meson > to provide a standard set of cross files for distros? If it's the > distro's responsibility to provide these without any guidelines it's > just going to be another mess, because either a distro doesn't at all or > they all do it differently. > I think it's very easy to mistake the way autotools handles things for somehow being easier. For quite some time now, Fedora has carried a patched version of autools which has a special case to automatically redirects you to lib64 if --prefix=/usr. It's horrible because it means that autotools behaves differently with every other possible prefix unless you manually set libdir. If they're going to carry patches against autotools, they can carry a meson cross file. Autotools is only "easier" because distros have beat on it with a hammer until it mostly works. --Jason
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