[postgis-users] [GENERAL] Error During PostGIS Build From Source on Linux

Osahon Oduware osahon.gis at gmail.com
Fri Apr 14 12:20:44 PDT 2017

Hi Adrian,

I installed Proj from source and I can confirm that the file libproj.so.12
is in its lib folder.

I have not been able to confirm if it is linked to postgis-2.3.so as I am
away for Easter holiday.

Just in case, how do I do the linking of libproj.so.12 to postgis-2.3.so as
I believe this could be the cause of the error. Also, I tried earlier to
copy the file to the PostgreSQL lib folder and this time when I try to run
"CREATE EXTENSION postgis;" I get the initial error:
ERROR: could not load library "/path/to/postgresql/lib/postgis-2.3.so":
/path/to/postgresql/lib/postgis-2.3.so: undefined symbol: GEOSClipByRect

I will be glad if anyone could help with this.

On Apr 13, 2017 18:27, "Adrian Klaver" <adrian.klaver at aklaver.com> wrote:

On 04/13/2017 07:54 AM, Osahon Oduware wrote:

> Hi Adrian,
> Thanks for your help so far. This is the output of the PostGIS
> configuration:
> -------------- Compiler Info -------------
>   C compiler:           gcc -g -O2
>   SQL preprocessor:     /usr/bin/cpp -traditional-cpp -w -P
>  -------------- Dependencies --------------
>   GEOS config:          /home/nagispg/local/geos361/bin/geos-config
>   GEOS version:         3.6.1
>   GDAL config:          /home/nagispg/local/gdal213/bin/gdal-config
>   GDAL version:         2.1.3
>   PostgreSQL config:    /home/nagispg/local/pgsql/bin/pg_config
>   PostgreSQL version:   PostgreSQL 9.6.2
>   PROJ4 version:        49
>   Libxml2 config:       /usr/bin/xml2-config
>   Libxml2 version:      2.7.6
>   JSON-C support:       no
>   PCRE support:         no
>   PostGIS debug level:  0
>   Perl:                 /usr/bin/perl
>  --------------- Extensions ---------------
>   PostGIS Raster:       enabled
>   PostGIS Topology:     enabled
>   SFCGAL support:       disabled
>   Address Standardizer support:       disabled
>  -------- Documentation Generation --------
>   xsltproc:             /usr/bin/xsltproc
>   xsl style sheets:
>   dblatex:
>   convert:              /usr/bin/convert
>   mathml2.dtd:          http://www.w3.org/Math/DTD/mathml2/mathml2.dtd
> <http://www.w3.org/Math/DTD/mathml2/mathml2.dtd>
> I had to install a *higher version of Proj (4.9.3)* that was used to
> configure PostGIS (I think I read somewhere in the documentation that
> the version of Proj should be >= 4.6.0). *Now, I get the following error
> when I run CREATE EXTENSION postgis:*

How did you install Proj, from a package or source?

> *ERROR: could not load library postgis-2.3.so <http://postgis-2.3.so>:
> libproj.so.12: cannot open shared object file: No such file or directory*

First find postgis-2.3.so and do:

ldd postgis-2.3.so

It should show something like:

        linux-vdso.so.1 (0x00007ffe3ed8a000)
        libgeos_c.so.1 => /usr/lib64/libgeos_c.so.1 (0x00007f975bd09000)
    ==> libproj.so.9 => /usr/lib64/libproj.so.9 (0x00007f975baaa000)
        libxml2.so.2 => /usr/lib64/libxml2.so.2 (0x00007f975b73f000)
        libm.so.6 => /lib64/libm.so.6 (0x00007f975b442000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f975b09e000)
        libgeos-3.5.1.so => /usr/lib64/libgeos-3.5.1.so (0x00007f975acef000)
        libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00007f975a966000)
        libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f975a74e000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f975a531000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f975a32d000)
        libz.so.1 => /lib64/libz.so.1 (0x00007f975a116000)
        liblzma.so.5 => /usr/lib64/liblzma.so.5 (0x00007f9759eed000)
        /lib64/ld-linux-x86-64.so.2 (0x000055ebafa02000)

That will verify if postgis-2.3.so is linked to libproj.

> I would be glad if someone could point me to what I am doing wrong and
> possible solution.
Adrian Klaver
adrian.klaver at aklaver.com
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