[gdal-dev] building python bindings after cmake compilation

[Saulteau Don]

I've gone with using -DBUILD_PYTHON_BINDINGS='ON' option and it builds
great. The install step has an unrelated error though,  but at least
compilation is successful using cmake.

-- Installing: /build/gdal/pkg/gdal/usr/bin/gdal-config
> -- Installing: /build/gdal/pkg/gdal/usr/lib/pkgconfig/gdal.pc
> perl: warning: Setting locale failed.
> perl: warning: Please check that your locale settings:
>        LANGUAGE = (unset),
>        LC_ALL = (unset),
>        LANG = "C.UTF-8"
>    are supported and installed on your system.
> perl: warning: Falling back to the standard locale ("C").
> open: No such file or directory

elf_open: Invalid argument


 Not sure what "open:" is looking for and failing with.


saultdon


On Thu, Jun 2, 2022 at 4:28 PM Saulteau Don <sault.don at gmail.com> wrote:

> Thanks Greg,
>
> I'm attempting to update the gdal PKGBUILD from Arch Linux at
> https://github.com/archlinux/svntogit-community/blob/packages/gdal/trunk/PKGBUILD
> and making revisions as I go along.
>
> It's a split package that breaks python-gdal apart from gdal so not sure
> how to compile the python bindings separately at this moment.
>
> I managed to patch the setup.cfg file:
>
>> --- a/gdal/swig/python/setup.cfg        2022-06-02 16:08:22.113109320
>> -0700
>> +++ b/gdal/swig/python/setup.cfg        2022-06-02 16:10:26.913826620
>> -0700
>> @@ -3,8 +3,7 @@
>> max-line-length=100
>>
>> [build_ext]
>> -#include_dirs = ../../port:../../gcore:../../alg:../../ogr/
>> -#library_dirs = ../../.libs:../../
>> +include_dirs =
>> ../../../build/port:../../../build/gcore:../../../build/alg:../../../build/ogr/
>> +library_dirs = ../../.libs:../../build
>> #libraries = gdal
>> -gdal_config=../../apps/gdal-config
>> -
>> +gdal_config=../../../build/apps/gdal-config
>
>
> If there's a preferred packaging way to build out the python bindings
> separately then I'm all ears cause this says it can't find the header files
> which are there in the paths patched:
>
>> running build
>> running build_py
>> running build_ext
>> building 'osgeo._gdal' extension
>> building 'osgeo._gdalconst' extension
>> building 'osgeo._osr' extension
>> building 'osgeo._gnm' extension
>> building 'osgeo._ogr' extension
>> building 'osgeo._gdal_array' extension
>> extensions/ogr_wrap.cpp:2838:10: fatal error: gdal.h: No such file or
>> directory
>> 2838 | #include "gdal.h"
>>      |          ^~~~~~~~
>> compilation terminated.
>> extensions/osr_wrap.cpp:2879:10: fatal error: cpl_string.h: No such file
>> or directory
>> 2879 | #include "cpl_string.h"
>>      |          ^~~~~~~~~~~~~~
>> compilation terminated.
>> extensions/gdal_array_wrap.cpp:2829:10: fatal error: gdal.h: No such file
>> or directory
>> 2829 | #include "gdal.h"
>>      |          ^~~~~~~~
>> compilation terminated.
>> extensions/gdalconst_wrap.c:2703:10: fatal error: gdal.h: No such file or
>> directory
>> 2703 | #include "gdal.h"
>>      |          ^~~~~~~~
>> compilation terminated.
>> extensions/gdal_wrap.cpp:2883:10: fatal error: cpl_port.h: No such file
>> or directory
>> 2883 | #include "cpl_port.h"
>>      |          ^~~~~~~~~~~~
>> compilation terminated.
>> extensions/gnm_wrap.cpp:2820:10: fatal error: gdal.h: No such file or
>> directory
>> 2820 | #include "gdal.h"
>>      |          ^~~~~~~~
>> compilation terminated.
>> error: command '/usr/bin/gcc' failed with exit code 1
>
>
> saultdon
>
> On Thu, Jun 2, 2022 at 4:03 PM Greg Troxel <gdt at lexort.com> wrote:
>
>>
>> Saulteau Don <sault.don at gmail.com> writes:
>>
>> > I have gdal 3.5.0 built using the new cmake system.
>> > /chroot/src/build <- cmake build directory
>> > /chroot/src/gdal <- src directory
>> > /chroot/src/gdal/swig/python
>> >
>> > My cmake is ran from the /chroot directory:
>> >
>> >> cmake -B build -S gdal \
>> >>       -DCMAKE_BUILD_TYPE='None' \
>> >>       -DCMAKE_INSTALL_PREFIX='/usr' \
>> >>       -DBUILD_PYTHON_BINDINGS='OFF' \
>> >>       -Wno-dev
>> >> cmake --build build
>> >
>> >
>> > Then to make the python bindings via swig:
>> >
>> >> cd gdal/swig/python
>> >> python setup.py build
>> >
>> >
>> > When the `python setup.py build` is running it can't find gdal-config
>> with
>> > the following errors:
>>
>> This may not be how you want to do this, but if you install the lib and
>> then build python as a separate step, it will probably go better.    I
>> am unclear on how this is supposed to work; pkgsrc builds non-python
>> libs and then python as separate packages.
>>
>
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