[GRASS-dev] [GRASS GIS] #3257: Do not require ctypes for compilation in temporal modules

[GRASS GIS]

#3257: Do not require ctypes for compilation in temporal modules
-------------------------------------------------+-------------------------
 Reporter:  wenzeslaus                           |      Owner:  grass-dev@…
     Type:  defect                               |     Status:  new
 Priority:  normal                               |  Milestone:  7.2.1
Component:  Temporal                             |    Version:  unspecified
 Keywords:  ctypes, compilation, build,          |        CPU:  Unspecified
  homebrew, brew, conda, macos, osx,             |
  v.what.strds, t.create                         |
 Platform:  All                                  |
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 The temporal modules require ctypes even during compilation. This makes
 the whole compilation more fragile. When ctypes fails compilation fails.
 This currently happens for example with Homebrew on Mac or in Conda
 environment (see below examples of error messages). The errors are
 somewhere else and the modules won't work, but I think the failure should
 come only when user actually needs them. The temporal modules should not
 break the build with ctypes not present or the dynamic libraries broken.

 The list of directories with errors:

 {{{
 /usr/local/src/grass/scripts/v.what.strds
 /usr/local/src/grass/temporal/t.create
 /usr/local/src/grass/temporal/t.support
 ...
 /usr/local/src/grass/temporal/t.vect.what.strds
 /usr/local/src/grass/temporal/t.vect.observe.strds
 /usr/local/src/grass/temporal/t.vect.univar
 }}}

 Examples of actual errors:

 {{{
 Traceback (most recent call last):
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/scripts/v.what.strds", line 53, in <module>
         import grass.temporal as tgis
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/temporal/init.py", line 3, in <module>
         from .core import *
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/temporal/core.py", line 44, in <module>
         from .c_libraries_interface import *
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/temporal/c_libraries_interface.py", line 23, in
 <module>
         import grass.lib.vector as libvector
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/lib/vector.py", line 23, in <module>
         _libs["grass_vector.7.3.svn"] =
 load_library("grass_vector.7.3.svn")
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/lib/ctypes_loader.py", line 62, in load_library
         return self.load(path)
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/lib/ctypes_loader.py", line 78, in load
         raise ImportError(e)
 ImportError: /home/main/anaconda2/bin/../lib/libgfortran.so.3: version
 `GFORTRAN_1.4' not found (required by /usr/lib/liblapack.so.3)
 make[3]: *** [v.what.strds.tmp.html] Error 1
 ../../include/Make/Html.make:14: recipe for target 'v.what.strds.tmp.html'
 failed
 }}}

 {{{
 Traceback (most recent call last):
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/scripts/v.what.strds", line 53, in <module>
         import grass.temporal as tgis
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/temporal/init.py", line 3, in <module>
         from .core import *
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/temporal/core.py", line 44, in <module>
         from .c_libraries_interface import *
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/temporal/c_libraries_interface.py", line 23, in
 <module>
         import grass.lib.vector as libvector
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/lib/vector.py", line 23, in <module>
         _libs["grass_vector.7.3.svn"] =
 load_library("grass_vector.7.3.svn")
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/lib/ctypes_loader.py", line 62, in load_library
         return self.load(path)
   File "/usr/local/src/grass/dist.x86_64-pc-linux-
 gnu/etc/python/grass/lib/ctypes_loader.py", line 78, in load
         raise ImportError(e)
 ImportError: /usr/lib/libgdal.so.1: undefined symbol:
 sqlite3_column_table_name
 ../../include/Make/Html.make:14: recipe for target 'v.what.strds.tmp.html'
 failed
 make[3]: *** [v.what.strds.tmp.html] Error 1
 }}}

 {{{
 ImportError...image not found...library not loaded libgis_datetime...
 }}}

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3257>
GRASS GIS <https://grass.osgeo.org>