[postgis-tickets] [PostGIS] #5098: Implement configure check for source dir being already configured

[PostGIS]

#5098: Implement configure check for source dir being already configured
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 Reporter:  strk                   |      Owner:  strk
     Type:  enhancement            |     Status:  new
 Priority:  medium                 |  Milestone:  PostGIS 3.3.0
Component:  build/upgrade/install  |    Version:  master
 Keywords:  out-of-tree            |
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 If the source dir was used as a build dir, furhter builds in external
 directory will fail.

 The AM_INIT_AUTOMAKE macro would add checks for source dir not being
 already configured (see /usr/share/libtool/aclocal.m4) -- we may or may
 not want to switch to Automake for just this macro (probably not) -- the
 macro could still be used as a template to write our own.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5098>
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