Support for PROJ 7.0.0 ?

[MatthieuStigler]

Hi

I unfortunately just got Proj 7.0 installed (on a ubuntu 18.04 machine, due to the latest change in the gdal-data from ppa ubuntugis-unstable).

Trying to compile sf, I get the sort of standard error

configure: error: proj_api.h not found in standard or given locations

This is clearly related to issue #42 for lwgeom and #28 for lwgeom.

It is not clear what I should do however? I tried a to add --configure-args="CFLAGS=-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H" as suggested in #42 for lwgeom, which brings me then to:

R CMD INSTALL --configure-args="CFLAGS=-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H" sf_0.8-1.tar.gz 

checking proj_api.h presence... no
configure: WARNING: proj_api.h: accepted by the compiler, rejected by the preprocessor!
configure: WARNING: proj_api.h: proceeding with the compiler's result
checking for proj_api.h... yes
checking for pj_init_plus in -lproj... yes
checking PROJ: epsg found and readable... no
Error: proj/epsg not found
Either install missing proj support files, for example
the proj-nad and proj-epsg RPMs on systems using RPMs,
or if installed but not autodetected, set PROJ_LIB to the
correct path, and if need be use the --with-proj-share=

So I tried to indicate the share library, which I believe would be /usr/share/proj on Ubuntu?

R CMD INSTALL --configure-args="CFLAGS=-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H --with-proj-lib=/usr/bin/lib --with-proj-share=/usr/share/proj/"  sf_0.8-1.tar.gz 

This however gives me exactly the same error! But indeed, looking at the share library /usr/share/proj, it seems there is no such epsg file

$ls /usr/share/proj/e*
/usr/share/proj/egm96_15.gtx

How can I ho ahead? Is it fine to use this DACCEPT_USE_OF_DEPRECATED_PROJ_API_H option? And is there an issue with my proj installation?

Thanks!!

[MatthieuStigler]

Sorry, I think this is exactly #1288!

Indeed, using just:

 remotes::install_github("r-spatial/sf")

solved it for me!