[Plplot-devel] plplot fails to build with python 3.13

[Orion P. <or...@nw...>]

/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c: 
In function ‘do_pltr_callback’:
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c:4065:22: 
error: implicit declaration of function ‘PyEval_CallObject’; did you 
mean ‘PyObject_CallObject’? [-Wimplicit-function-declaration]
  4065 |             result = PyEval_CallObject( python_pltr, arglist );
       |                      ^~~~~~~~~~~~~~~~~
       |                      PyObject_CallObject
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c:4065:20: 
error: assignment to ‘PyObject *’ {aka ‘struct _object *’} from ‘int’ 
makes pointer from integer without a cast [-Wint-conversion]
  4065 |             result = PyEval_CallObject( python_pltr, arglist );
       |                    ^
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c: 
In function ‘do_f2eval_callback’:
[ 45%] Built target x10c
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c:4114:20: 
error: assignment to ‘PyObject *’ {aka ‘struct _object *’} from ‘int’ 
makes pointer from integer without a cast [-Wint-conversion]
  4114 |             result = PyEval_CallObject( python_f2eval, arglist );
       |                    ^
[ 45%] Linking C executable x14c
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c: 
In function ‘do_label_callback’:
cd 
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/examples/c 
&& /usr/bin/cmake -E cmake_link_script CMakeFiles/x14c.dir/link.txt 
--verbose=1
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c:4158:20: 
error: assignment to ‘PyObject *’ {aka ‘struct _object *’} from ‘int’ 
makes pointer from integer without a cast [-Wint-conversion]
  4158 |             result = PyEval_CallObject( python_label, arglist );
       |                    ^
[ 45%] Linking C executable x08c
gmake[2]: Leaving directory 
'/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build'
cd 
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/examples/c 
&& /usr/bin/cmake -E cmake_link_script CMakeFiles/x08c.dir/link.txt 
--verbose=1
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/drivers/cairo.c: 
In function ‘plD_eop_xcairo’:
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c: 
In function ‘do_ct_callback’:
[ 45%] Built target x00c
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/drivers/cairo.c:2088:14: 
warning: variable ‘aStream’ set but not used [-Wunused-but-set-variable]
  2088 |     PLCairo *aStream;
       |              ^~~~~~~
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c:4215:20: 
error: assignment to ‘PyObject *’ {aka ‘struct _object *’} from ‘int’ 
makes pointer from integer without a cast [-Wint-conversion]
  4215 |             result = PyEval_CallObject( python_ct, arglist );
       |                    ^
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c: 
In function ‘do_mapform_callback’:
gmake[2]: Leaving directory 
'/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build'
/builddir/build/BUILD/plplot-5.15.0-build/plplot-5.15.0/redhat-linux-build/bindings/python/plplotcPYTHON_wrap.c:4256:20: 
error: assignment to ‘PyObject *’ {aka ‘struct _object *’} from ‘int’ 
makes pointer from integer without a cast [-Wint-conversion]
  4256 |             result = PyEval_CallObject( python_mapform, arglist );
       |                    ^

looks like that was deprecated in 3.9 and removed in 3.13:

https://docs.python.org/3.13/whatsnew/3.13.html#removed-c-apis

-- 
Orion Poplawski
he/him/his  - surely the least important thing about me
IT Systems Manager                         720-772-5637
NWRA, Boulder/CoRA Office             FAX: 303-415-9702
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