skissane/pex_install_postgis_workarounds.md

## pex_install_postgis_workarounds.md

      
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              pex_install_postgis_workarounds.md
            
          
    Problem: configure: error: could not find libxml2

Solution: sudo xcode-select -s /Library/Developer/CommandLineTools
Problem: configure: error: could not find geos-config within the current path. You may need to try re-running configure with a --with-geosconfig parameter

Solution: brew install geos
Problem: configure: error: could not find proj_api.h - you may need to specify the directory of a PROJ.4 installation using --with-projdir

Solution: brew install proj and then CFLAGS=-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H pex install postgis
Problem: configure: error: gdal-config not found. Use --without-raster or try --with-gdalconfig=<path to gdal-config>

Solution: brew install gdal
Problem: lwin_geojson.c:36:10: fatal error: 'json-c/json_object_private.h' file not found

Hacky workaround: touch /usr/local/include/json-c/json_object_private.h
(Note: json_object_private.h is a private header file, and postgis should not include it. Newer json-c versions no longer ship it. Newer postgis versions this is fixed. Creating an empty file is enough to get past this error.)
Problem: ../liblwgeom/liblwgeom.h:35:10: fatal error: 'proj_api.h' file not found

Solution: PG_CPPFLAGS='-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H -I/usr/local/include' CFLAGS='-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H -I/usr/local/include' pex install postgis
see: petere/pex#8
Problem: address_parser.c:10:10: fatal error: 'pcre.h' file not found

Ultra-hacky workaround: ln -s /usr/local/include/pcre*.h /usr/local/opt/postgresql@9.6/include
Can't really defend this monstrosity except to say it works, and I haven't found any better solution. If anyone knows of a less stupid solution, I'm all ears!