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How to solve `sf` installation error: proj_api.h not found in standard or given locations – CentOS

I need to install sf package for R in CentOS 7.

The repo versions of gdal and proj are less than the required for the package, so I installed them from source.

Even linking those libraries I always get the same error:

configure: GDAL: 3.2.0
checking proj.h usability... no
checking proj.h presence... no
checking for proj.h... no
checking proj_api.h usability... no
checking proj_api.h presence... no
checking for proj_api.h... no
configure: error: proj_api.h not found in standard or given locations.
ERROR: configuration failed for package ‘sf’

I have tried different commands, and from diferent sources (CRAN, GitHub, locally) and always get the same error.

For example:

install_github("r-spatial/sf", configure.args="--with-gdal-config=/usr/local/gdal-3.2.0/bin/gdal-config --with-proj-lib=/usr/local/proj-7.2.0/lib --with-proj-include=/usr/local/proj-7.2.0/include")

proj_api.h is present at the specified path:

locate proj_api.h
/usr/local/proj-7.2.0/include/proj_api.h
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2

Answers


  1. Chosen as BEST ANSWER
    0

    The solution was really simple. I just copied the files in /usr/local/proj-7.2.0/include to /usr/local/include and the files in /usr/local/proj-7.2.0/lib to /usr/local/lib.

    Then I added a .conf file in /etc/ld.so.conf.d with the path to /usr/local/proj-7.2.0/lib and ran sudo ldconfig.

    It seems that while other packages recognize proj in custom locations, sf doesn't. Particulary, this part does nothing "--with-proj-lib=/usr/local/proj-7.2.0/lib", "--with-proj-include=/usr/local/proj-7.2.0/include".

    The command line to install sf was install.packages("sf", configure.args="--with-gdal-config=/usr/local/gdal-3.2.0/bin/gdal-config --with-geos-config=/usr/local/bin/geos-config") without any reference to proj.

    No needs to change OS or downgrade libraries.


  2. 0

    I was experiencing the same problem today, but I could not use the other solution because I do not have root access. The problem was because the configure file used pkgconfig to check if proj exists, and I needed to add the path to proj.pc to where pkgconfig checks.

    After

    export PKG_CONFIG_PATH=${PKG_CONFIG_PATH}:/home/directory/local/proj_install/lib/pkgconfig

    install.packages("sf", configure.args="--with-proj-include=/home/directory/local/proj_install/include --with-proj-lib=/home/directory/local/proj_install/lib --with-proj-data=/home/directory/local/proj_install/share/proj")

    worked fine.

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