[PostGIS] #5529: --without-projdir not working (Tools build still requires too much)

[PostGIS]

#5529: --without-projdir not working (Tools build still requires too much)
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  Reporter:  robe    |      Owner:  strk
      Type:  defect  |     Status:  assigned
  Priority:  medium  |  Milestone:  PostGIS 3.5.0
 Component:  build   |    Version:  master
Resolution:          |   Keywords:
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Comment (by strk):

 Specifically: liblwgeom currently requires proj, for example:
 liblwgeom/lwspheroid.c:149: undefined reference to `geod_init'

 Should those parts of liblwgeom be made unavailable when building without
 proj ?
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5529#comment:7>
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