[KDE/Mac] Thoughts on standard directories in Qt5 - QStandardPaths
René J.V. Bertin
rjvbertin at gmail.com
Sat Dec 20 14:25:37 UTC 2014
On Saturday December 20 2014 12:39:55 David Faure wrote:
> The way MacPorts works sounds like it could be a way to get more stuff into
> QStandardPaths, basically "adding MacPorts support" to it.
> The question is, what exactly does that mean :)
Yes, yes, ain't that what we're trying to finagle out? :)
> If we (just like MacPorts) install stuff into /opt/local how do applications
> find stuff there? Doesn't this require some
> export XDG_DATA_DIRS=/opt/local/share and similar?
> The MacPorts wiki doesn't really explain how it all ends up working, but maybe
> that's because simple libs don't have such issues.
Part of that is simply because most all packages/projects/whatever-you-call-them default to installing in /usr/local, can be configured to install in /usr instead, and thus have no issues at all if they end up in /opt/local.
It seems that with all the modern complexities and interdependencies we tend to forget the simple things that have worked for decades ...
> I mean - how does it work for other XDG software than Qt and KF5, which needs
> to find stuff, like, let's say, update-mime-database (or any other XDG software
> that uses mimetypes), which has to find /opt/local/share/mime ?
> (rather than the default location for it, which would be /usr/share/mime)
No, that would be under /usr/local !
#> shared-mime-info/configure --help
`configure' configures shared-mime-info 1.3 to adapt to many kinds of systems.
Usage: /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_shared-mime-info/shared-mime-info/work/shared-mime-info-1.3/configure [OPTION]... [VAR=VALUE]...
To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE. See below for descriptions of some of the useful variables.
Defaults for the options are specified in brackets.
-h, --help display this help and exit
--help=short display options specific to this package
--help=recursive display the short help of all the included packages
-V, --version display version information and exit
-q, --quiet, --silent do not print `checking ...' messages
--cache-file=FILE cache test results in FILE [disabled]
-C, --config-cache alias for `--cache-file=config.cache'
-n, --no-create do not create output files
--srcdir=DIR find the sources in DIR [configure dir or `..']
--prefix=PREFIX install architecture-independent files in PREFIX
--exec-prefix=EPREFIX install architecture-dependent files in EPREFIX
By default, `make install' will install all the files in
`/usr/local/bin', `/usr/local/lib' etc. You can specify
an installation prefix other than `/usr/local' using `--prefix',
for instance `--prefix=$HOME'.
For better control, use the options below.
The shared-mime-info Portfile does an autoreconf (-fvi) before calling configure --prefix=/opt/local --disable-update-mimedb
and that's that.
So at least for this example it seems that it is XDG conceived to work with and/or under paths that are already present and used rather than the other way around.
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