<div dir="ltr"><div>Hi,</div><div><br></div><div>In my opinion, although there are not explanations, Travis build files are a good help to sort out building issues dependencies.</div><div><a href="https://github.com/OSGeo/gdal/tree/master/gdal/ci/travis">https://github.com/OSGeo/gdal/tree/master/gdal/ci/travis</a></div><div>Mentioning them somewhere could help<br></div><div><br></div><div><br></div><div>Regards</div><div><br></div><div>Thomas Gratier<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Le dim. 20 oct. 2019 à 22:27, Mateusz Loskot <<a href="mailto:mateusz@loskot.net">mateusz@loskot.net</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Sun, 20 Oct 2019 at 19:31, Jeff McKenna<br>
<<a href="mailto:jmckenna@gatewaygeomatics.com" target="_blank">jmckenna@gatewaygeomatics.com</a>> wrote:<br>
> > On lundi 30 septembre 2019 11:21:16 CEST Mateusz Loskot wrote:<br>
> >><br>
> >> I'm a bit lost where build requirements are supposed<br>
> >> to be documented now. They used to be described<br>
> >> on the Wiki, e.g. <a href="https://trac.osgeo.org/gdal/wiki/BuildingOnUnix" rel="noreferrer" target="_blank">https://trac.osgeo.org/gdal/wiki/BuildingOnUnix</a><br>
> >> or driver-specific ones <a href="https://trac.osgeo.org/gdal/wiki/ECW" rel="noreferrer" target="_blank">https://trac.osgeo.org/gdal/wiki/ECW</a><br>
> ><br>
><br>
> The wiki worked really well for that, and over the years we compiled<br>
> quite a list of build steps for drivers and platforms<br>
> (<a href="https://trac.osgeo.org/gdal/wiki/BuildHints" rel="noreferrer" target="_blank">https://trac.osgeo.org/gdal/wiki/BuildHints</a>). I'd suggest we continue<br>
> to use the wiki method (meaning now we transition to the Github wiki),<br>
> so we don't have any funnels where someone needs to approve or<br>
> disapprove of a change to the official website or repository.<br>
<br>
I don't have anything against the wiki but a wiki is supposed to be<br>
complementary to existing docs.<br>
<br>
Even suggested to recover the "Compiled by default" column<br>
from the table in the old docs. On reflection, I don't think that<br>
will solve problem I'm calling in this thread - what are the build<br>
requirements of GDAL and features in GDAL.<br>
<br>
IMO, there should be<br>
<br>
<a href="https://gdal.org/building/" rel="noreferrer" target="_blank">https://gdal.org/building/</a><br>
<a href="https://gdal.org/building/requirements" rel="noreferrer" target="_blank">https://gdal.org/building/requirements</a><br>
<a href="https://gdal.org/building/unix" rel="noreferrer" target="_blank">https://gdal.org/building/unix</a><br>
<a href="https://gdal.org/building/windows" rel="noreferrer" target="_blank">https://gdal.org/building/windows</a><br>
<br>
where <a href="https://gdal.org/building/requirements" rel="noreferrer" target="_blank">https://gdal.org/building/requirements</a> lists common dependencies<br>
similarly to <a href="https://pdal.io/development/compilation/dependencies.html" rel="noreferrer" target="_blank">https://pdal.io/development/compilation/dependencies.html</a><br>
<br>
e.g. it lists ODBC and describes briefly that it is required by drivers A, B, C,<br>
that on Unix one can use unixODBC or iODBC; that on Windows it comes<br>
with native Windows SDK.<br>
Similarly for libcurl, proj, and any other general purpose dependency of GDAL.<br>
<br>
> The argument sometimes used against a wiki is that it is not managed,<br>
> but this is exactly why the Buildhints wiki was allowed to thrive.<br>
<br>
Official build procedure with requirements listed is one thing.<br>
Build hints, workarounds and troubleshooting is a different thing.<br>
IMO, the former should be reviewed, curated and up to date<br>
while the latter is a perfect fit for community-written wiki<br>
that can rot...<br>
<br>
> There of course will still be one hurdle, requiring to have a Github<br>
> account, but besides that the wiki should thrive there for years to come.<br>
<br>
Similar hurdle (requirement of an account) applies to OSGeo infrastructure.<br>
<br>
Best regards,<br>
--<br>
Mateusz Loskot, <a href="http://mateusz.loskot.net" rel="noreferrer" target="_blank">http://mateusz.loskot.net</a><br>
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