Building scikits.odes-daepack needs c17

[sergiocallegari]

I cannot install scikits.odes with pip anymore and the problem seems to be with the scikits.odes-daepack piece.

I am on manjaro/arch with python 3.13.7.

If I create a venv with python -m venv TEST, activate it and then try a pip install scikits.odes-daepack, that fails. The error msg is extra long, 173 lines of output, but I fail to find any useful hint in it at what meson and ninja try to do.

The problems start with:

Found ninja-1.12.1 at /usr/bin/ninja
      + /usr/bin/ninja
      [1/40] Generating ddaspkmodule.c with a custom command
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'

and the final errors look like:

ddaspkmodule.c:1121:18: error: too many arguments to function ‘f2py_func’; expected 0, have 18

Any clue at what is going on?

[sergiocallegari]

Full log:

Collecting scikits.odes-daepack
  Downloading scikits_odes_daepack-3.0.0.tar.gz (115 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [173 lines of output]
      + meson setup /tmp/pip-install-aawxmgmc/scikits-odes-daepack_9dc3939b7a5544babe03c95727fe64c5 /tmp/pip-install-aawxmgmc/scikits-odes-daepack_9dc3939b7a5544babe03c95727fe64c5/.mesonpy-g2412exo -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md -Dpython.install_env=auto --native-file=/tmp/pip-install-aawxmgmc/scikits-odes-daepack_9dc3939b7a5544babe03c95727fe64c5/.mesonpy-g2412exo/meson-python-native-file.ini
      The Meson build system
      Version: 1.9.1
      Source dir: /tmp/pip-install-aawxmgmc/scikits-odes-daepack_9dc3939b7a5544babe03c95727fe64c5
      Build dir: /tmp/pip-install-aawxmgmc/scikits-odes-daepack_9dc3939b7a5544babe03c95727fe64c5/.mesonpy-g2412exo
      Build type: native build
      Project name: scikits-odes-daepack
      Project version: 3.0.0
      Fortran compiler for the host machine: gfortran (gcc 15.2.1 "GNU Fortran (GCC) 15.2.1 20250813")
      Fortran linker for the host machine: gfortran ld.bfd 2.45.0
      C compiler for the host machine: cc (gcc 15.2.1 "cc (GCC) 15.2.1 20250813")
      C linker for the host machine: cc ld.bfd 2.45.0
      Host machine cpu family: x86_64
      Host machine cpu: x86_64
      Program python found: YES (/home/callegar/PythonEnvs/PROVA/bin/python3)
      Found pkg-config: YES (/usr/bin/pkg-config) 2.5.1
      Run-time dependency python found: YES 3.13
      Build targets in project: 4
      
      scikits-odes-daepack 3.0.0
      
        User defined options
          Native files      : /tmp/pip-install-aawxmgmc/scikits-odes-daepack_9dc3939b7a5544babe03c95727fe64c5/.mesonpy-g2412exo/meson-python-native-file.ini
          b_ndebug          : if-release
          b_vscrt           : md
          buildtype         : release
          python.install_env: auto
      
      Found ninja-1.12.1 at /usr/bin/ninja
      + /usr/bin/ninja
      [1/40] Generating ddaspkmodule.c with a custom command
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      Reading fortran codes...
          Reading file '../src/scikits_odes_daepack/ddaspk.pyf' (format:free)
      Post-processing...
          Block: ddaspk__user__routines
                  Block: ddaspk_user_interface
                          Block: res
                          Block: jac
          Block: ddaspk
                          Block: ddaspk
      In: ../src/scikits_odes_daepack/ddaspk.pyf:ddaspk:unknown_interface:ddaspk
      get_useparameters: no module ddaspk__user__routines info used by ddaspk
      Applying post-processing hooks...
        character_backward_compatibility_hook
      Post-processing (stage 2)...
      Building modules...
          Constructing call-back function "cb_res_in_ddaspk__user__routines"
            def res(x,y,yprime): return delta,ires
          Constructing call-back function "cb_jac_in_ddaspk__user__routines"
            def jac(x,y,yprime,cj): return wm
          Building module "ddaspk"...
          Generating possibly empty wrappers"
          Maybe empty "ddaspk-f2pywrappers.f"
              Constructing wrapper function "ddaspk"...
      warning: callstatement is defined without callprotoargument
      getarrdims:warning: assumed shape array, using 0 instead of '*'
      getarrdims:warning: assumed shape array, using 0 instead of '*'
                y,yprime,t,idid = ddaspk(res,jac,y,yprime,t,tout,info,rtol,atol,rwork,iwork,[res_extra_args,jac_extra_args,overwrite_y,overwrite_yprime])
          Wrote C/API module "ddaspk" to file "./ddaspkmodule.c"
      [2/40] Generating lsodimodule.c with a custom command
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      Reading fortran codes...
          Reading file '../src/scikits_odes_daepack/lsodi.pyf' (format:free)
      Post-processing...
          Block: lsodi__user__routines
                  Block: lsodi_user_interface
                          Block: res
                          Block: adda
                          Block: jac
          Block: lsodi
                          Block: lsodi
      In: ../src/scikits_odes_daepack/lsodi.pyf:lsodi:unknown_interface:lsodi
      get_useparameters: no module lsodi__user__routines info used by lsodi
                          Block: intdy
      Applying post-processing hooks...
        character_backward_compatibility_hook
      Post-processing (stage 2)...
      Building modules...
          Constructing call-back function "cb_res_in_lsodi__user__routines"
            def res(tn,y,s,ires): return r
          Constructing call-back function "cb_adda_in_lsodi__user__routines"
            def adda(t,y,ml,mu,p,[nrowp]): return p
          Constructing call-back function "cb_jac_in_lsodi__user__routines"
            def jac(t,y,s,ml,mu,[nrowp]): return p
          Building module "lsodi"...
          Generating possibly empty wrappers"
          Maybe empty "lsodi-f2pywrappers.f"
              Constructing wrapper function "lsodi"...
      getarrdims:warning: assumed shape array, using 0 instead of '*'
                y,ydoti,t,istate = lsodi(res,adda,jac,y,ydoti,t,tout,itol,rtol,atol,itask,istate,iopt,rwork,iwork,mf,[res_extra_args,adda_extra_args,jac_extra_args,overwrite_y,overwrite_ydoti])
          Generating possibly empty wrappers"
          Maybe empty "lsodi-f2pywrappers.f"
              Constructing wrapper function "intdy"...
      getarrdims:warning: assumed shape array, using 0 instead of '*'
                dky,iflag = intdy(t,k,yh,nyh)
          Wrote C/API module "lsodi" to file "./lsodimodule.c"
      [3/40] Scanning target lsodi.cpython-313-x86_64-linux-gnu for modules
      [4/40] Compiling C object ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o
      FAILED: ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o
      cc -Iddaspk.cpython-313-x86_64-linux-gnu.so.p -I. -I.. -I/tmp/pip-build-env-ztjsil8h/overlay/lib/python3.13/site-packages/numpy/_core/include -I/tmp/pip-build-env-ztjsil8h/overlay/lib/python3.13/site-packages/numpy/f2py/src -I/usr/include/python3.13 -fvisibility=hidden -fdiagnostics-color=always -DNDEBUG -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -O3 -fPIC -MD -MQ ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o -MF ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o.d -o ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o -c ddaspkmodule.c
      ddaspkmodule.c: In function ‘cb_res_in_ddaspk__user__routines’:
      ddaspkmodule.c:459:9: warning: unused variable ‘ipar’ [-Wunused-variable]
        459 |     int ipar=(*ipar_cb_capi);
            |         ^~~~
      ddaspkmodule.c:458:12: warning: unused variable ‘rpar’ [-Wunused-variable]
        458 |     double rpar=(*rpar_cb_capi);
            |            ^~~~
      ddaspkmodule.c:457:9: warning: unused variable ‘ires’ [-Wunused-variable]
        457 |     int ires=(*ires_cb_capi);
            |         ^~~~
      ddaspkmodule.c:456:12: warning: unused variable ‘cj’ [-Wunused-variable]
        456 |     double cj=(*cj_cb_capi);
            |            ^~
      ddaspkmodule.c: In function ‘cb_jac_in_ddaspk__user__routines’:
      ddaspkmodule.c:676:14: warning: unused variable ‘ipar_Dims’ [-Wunused-variable]
        676 |     npy_intp ipar_Dims[1] = {-1};
            |              ^~~~~~~~~
      ddaspkmodule.c:675:14: warning: unused variable ‘rpar_Dims’ [-Wunused-variable]
        675 |     npy_intp rpar_Dims[1] = {-1};
            |              ^~~~~~~~~
      ddaspkmodule.c: In function ‘f2py_rout_ddaspk_ddaspk’:
      ddaspkmodule.c:1121:18: error: too many arguments to function ‘f2py_func’; expected 0, have 18
       1121 |                 (*f2py_func)(cb_res_in_ddaspk__user__routines,&neq,&t,y,yprime,&tout,info,rtol,atol,&idid,rwork,&lrw,iwork,&liw,&rpar,&ipar,cb_jac_in_ddaspk__user__routines,psol) ;
            |                 ~^~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ddaspkmodule.c:901:46: warning: variable ‘jac_cptr’ set but not used [-Wunused-but-set-variable]
        901 |     cb_jac_in_ddaspk__user__routines_typedef jac_cptr;
            |                                              ^~~~~~~~
      ddaspkmodule.c:897:46: warning: variable ‘res_cptr’ set but not used [-Wunused-but-set-variable]
        897 |     cb_res_in_ddaspk__user__routines_typedef res_cptr;
            |                                              ^~~~~~~~
      [5/40] Generating dynamic dependency information for target lsodi.cpython-313-x86_64-linux-gnu
      [6/40] Scanning target ddaspk.cpython-313-x86_64-linux-gnu for modules
      [7/40] Compiling C object lsodi.cpython-313-x86_64-linux-gnu.so.p/0d3cda22eb7530fc6eda42e428e4801d6aa9cf2d_site-packages_numpy_f2py_src_fortranobject.c.o
      [8/40] Compiling C object ddaspk.cpython-313-x86_64-linux-gnu.so.p/0d3cda22eb7530fc6eda42e428e4801d6aa9cf2d_site-packages_numpy_f2py_src_fortranobject.c.o
      [9/40] Compiling C object lsodi.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._lsodimodule.c.o
      ninja: build stopped: subcommand failed.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> scikits.odes-daepack

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

[sergiocallegari]

This makes it impossible to install scikits.odes as a whole, since scikits.odes-daepack is listed as a dependency. Given that:

Historical solvers: lsodi and ddaspk are available for comparison reasons. Use IDA instead! Note that lsodi fails on architecture aarch64.

Can this part be made an extra, not installed by default?

[sergiocallegari]

Another log (tried with an older scipy)

pip install scikits-odes-daepack
Collecting scikits-odes-daepack
  Using cached scikits_odes_daepack-3.0.0.tar.gz (115 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [723 lines of output]
      + meson setup /tmp/pip-install-_o1d66a7/scikits-odes-daepack_cd48a13dab314e089d23c83269b85e13 /tmp/pip-install-_o1d66a7/scikits-odes-daepack_cd48a13dab314e089d23c83269b85e13/.mesonpy-aiaslerj -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md -Dpython.install_env=auto --native-file=/tmp/pip-install-_o1d66a7/scikits-odes-daepack_cd48a13dab314e089d23c83269b85e13/.mesonpy-aiaslerj/meson-python-native-file.ini
      The Meson build system
      Version: 1.9.1
      Source dir: /tmp/pip-install-_o1d66a7/scikits-odes-daepack_cd48a13dab314e089d23c83269b85e13
      Build dir: /tmp/pip-install-_o1d66a7/scikits-odes-daepack_cd48a13dab314e089d23c83269b85e13/.mesonpy-aiaslerj
      Build type: native build
      Project name: scikits-odes-daepack
      Project version: 3.0.0
      Fortran compiler for the host machine: gfortran (gcc 15.2.1 "GNU Fortran (GCC) 15.2.1 20250813")
      Fortran linker for the host machine: gfortran ld.bfd 2.45.0
      C compiler for the host machine: cc (gcc 15.2.1 "cc (GCC) 15.2.1 20250813")
      C linker for the host machine: cc ld.bfd 2.45.0
      Host machine cpu family: x86_64
      Host machine cpu: x86_64
      Program python found: YES (/home/callegar/PythonEnvs/PROVA/bin/python3.13)
      Found pkg-config: YES (/usr/bin/pkg-config) 2.5.1
      Run-time dependency python found: YES 3.13
      Build targets in project: 4
      
      scikits-odes-daepack 3.0.0
      
        User defined options
          Native files      : /tmp/pip-install-_o1d66a7/scikits-odes-daepack_cd48a13dab314e089d23c83269b85e13/.mesonpy-aiaslerj/meson-python-native-file.ini
          b_ndebug          : if-release
          b_vscrt           : md
          buildtype         : release
          python.install_env: auto
      
      Found ninja-1.12.1 at /usr/bin/ninja
      + /usr/bin/ninja
      [1/40] Generating ddaspkmodule.c with a custom command
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      Reading fortran codes...
          Reading file '../src/scikits_odes_daepack/ddaspk.pyf' (format:free)
      Post-processing...
          Block: ddaspk__user__routines
                  Block: ddaspk_user_interface
                          Block: res
                          Block: jac
          Block: ddaspk
                          Block: ddaspk
      In: ../src/scikits_odes_daepack/ddaspk.pyf:ddaspk:unknown_interface:ddaspk
      get_useparameters: no module ddaspk__user__routines info used by ddaspk
      Applying post-processing hooks...
        character_backward_compatibility_hook
      Post-processing (stage 2)...
      Building modules...
          Constructing call-back function "cb_res_in_ddaspk__user__routines"
            def res(x,y,yprime): return delta,ires
          Constructing call-back function "cb_jac_in_ddaspk__user__routines"
            def jac(x,y,yprime,cj): return wm
          Building module "ddaspk"...
          Generating possibly empty wrappers"
          Maybe empty "ddaspk-f2pywrappers.f"
              Constructing wrapper function "ddaspk"...
      warning: callstatement is defined without callprotoargument
      getarrdims:warning: assumed shape array, using 0 instead of '*'
      getarrdims:warning: assumed shape array, using 0 instead of '*'
                y,yprime,t,idid = ddaspk(res,jac,y,yprime,t,tout,info,rtol,atol,rwork,iwork,[res_extra_args,jac_extra_args,overwrite_y,overwrite_yprime])
          Wrote C/API module "ddaspk" to file "./ddaspkmodule.c"
      [2/40] Generating lsodimodule.c with a custom command
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      append_needs: unknown need 'int'
      append_needs: unknown need 'double'
      append_needs: unknown need 'int'
      Reading fortran codes...
          Reading file '../src/scikits_odes_daepack/lsodi.pyf' (format:free)
      Post-processing...
          Block: lsodi__user__routines
                  Block: lsodi_user_interface
                          Block: res
                          Block: adda
                          Block: jac
          Block: lsodi
                          Block: lsodi
      In: ../src/scikits_odes_daepack/lsodi.pyf:lsodi:unknown_interface:lsodi
      get_useparameters: no module lsodi__user__routines info used by lsodi
                          Block: intdy
      Applying post-processing hooks...
        character_backward_compatibility_hook
      Post-processing (stage 2)...
      Building modules...
          Constructing call-back function "cb_res_in_lsodi__user__routines"
            def res(tn,y,s,ires): return r
          Constructing call-back function "cb_adda_in_lsodi__user__routines"
            def adda(t,y,ml,mu,p,[nrowp]): return p
          Constructing call-back function "cb_jac_in_lsodi__user__routines"
            def jac(t,y,s,ml,mu,[nrowp]): return p
          Building module "lsodi"...
          Generating possibly empty wrappers"
          Maybe empty "lsodi-f2pywrappers.f"
              Constructing wrapper function "lsodi"...
      getarrdims:warning: assumed shape array, using 0 instead of '*'
                y,ydoti,t,istate = lsodi(res,adda,jac,y,ydoti,t,tout,itol,rtol,atol,itask,istate,iopt,rwork,iwork,mf,[res_extra_args,adda_extra_args,jac_extra_args,overwrite_y,overwrite_ydoti])
          Generating possibly empty wrappers"
          Maybe empty "lsodi-f2pywrappers.f"
              Constructing wrapper function "intdy"...
      getarrdims:warning: assumed shape array, using 0 instead of '*'
                dky,iflag = intdy(t,k,yh,nyh)
          Wrote C/API module "lsodi" to file "./lsodimodule.c"
      [3/40] Scanning target ddaspk.cpython-313-x86_64-linux-gnu for modules
      [4/40] Generating dynamic dependency information for target ddaspk.cpython-313-x86_64-linux-gnu
      [5/40] Compiling C object ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o
      FAILED: ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o
      cc -Iddaspk.cpython-313-x86_64-linux-gnu.so.p -I. -I.. -I/tmp/pip-build-env-9vl0j4_o/overlay/lib/python3.13/site-packages/numpy/_core/include -I/tmp/pip-build-env-9vl0j4_o/overlay/lib/python3.13/site-packages/numpy/f2py/src -I/home/callegar/.local/share/uv/python/cpython-3.13.9-linux-x86_64-gnu/lib/pkgconfig/../../include/python3.13 -fvisibility=hidden -fdiagnostics-color=always -DNDEBUG -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -O3 -fPIC -MD -MQ ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o -MF ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o.d -o ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspkmodule.c.o -c ddaspkmodule.c
      ddaspkmodule.c: In function ‘cb_res_in_ddaspk__user__routines’:
      ddaspkmodule.c:459:9: warning: unused variable ‘ipar’ [-Wunused-variable]
        459 |     int ipar=(*ipar_cb_capi);
            |         ^~~~
      ddaspkmodule.c:458:12: warning: unused variable ‘rpar’ [-Wunused-variable]
        458 |     double rpar=(*rpar_cb_capi);
            |            ^~~~
      ddaspkmodule.c:457:9: warning: unused variable ‘ires’ [-Wunused-variable]
        457 |     int ires=(*ires_cb_capi);
            |         ^~~~
      ddaspkmodule.c:456:12: warning: unused variable ‘cj’ [-Wunused-variable]
        456 |     double cj=(*cj_cb_capi);
            |            ^~
      ddaspkmodule.c: In function ‘cb_jac_in_ddaspk__user__routines’:
      ddaspkmodule.c:676:14: warning: unused variable ‘ipar_Dims’ [-Wunused-variable]
        676 |     npy_intp ipar_Dims[1] = {-1};
            |              ^~~~~~~~~
      ddaspkmodule.c:675:14: warning: unused variable ‘rpar_Dims’ [-Wunused-variable]
        675 |     npy_intp rpar_Dims[1] = {-1};
            |              ^~~~~~~~~
      ddaspkmodule.c: In function ‘f2py_rout_ddaspk_ddaspk’:
      ddaspkmodule.c:1121:18: error: too many arguments to function ‘f2py_func’; expected 0, have 18
       1121 |                 (*f2py_func)(cb_res_in_ddaspk__user__routines,&neq,&t,y,yprime,&tout,info,rtol,atol,&idid,rwork,&lrw,iwork,&liw,&rpar,&ipar,cb_jac_in_ddaspk__user__routines,psol) ;
            |                 ~^~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ddaspkmodule.c:901:46: warning: variable ‘jac_cptr’ set but not used [-Wunused-but-set-variable]
        901 |     cb_jac_in_ddaspk__user__routines_typedef jac_cptr;
            |                                              ^~~~~~~~
      ddaspkmodule.c:897:46: warning: variable ‘res_cptr’ set but not used [-Wunused-but-set-variable]
        897 |     cb_res_in_ddaspk__user__routines_typedef res_cptr;
            |                                              ^~~~~~~~
      [6/40] Compiling Fortran object ddaspk.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._ddaspk-f2pywrappers.f.o
      [7/40] Scanning target lsodi.cpython-313-x86_64-linux-gnu for modules
      [8/40] Compiling Fortran object ddaspk.cpython-313-x86_64-linux-gnu.so.p/src_scikits_odes_daepack_daepack_ainvg.f.o
      ../src/scikits_odes_daepack/daepack/ainvg.f:27:72:
      
         27 |    10    pw(i) = 0.0d0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 10 at (1)
      ../src/scikits_odes_daepack/daepack/ainvg.f:47:72:
      
         47 |   110    pw(i) = 0.0d0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 110 at (1)
      [9/40] Compiling Fortran object ddaspk.cpython-313-x86_64-linux-gnu.so.p/src_scikits_odes_daepack_daepack_daux.f.o
      ../src/scikits_odes_daepack/daepack/daux.f:2:41:
      
          2 |       DOUBLE PRECISION FUNCTION D1MACH (IDUMMY)
            |                                         1~~~~~
      Warning: Unused dummy argument ‘idummy’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/daux.f:48:37:
      
         48 |       SUBROUTINE XERRWD (MSG, NMES, NERR, LEVEL, NI, I1, I2, NR, R1, R2)
            |                                     1~~~
      Warning: Unused dummy argument ‘nerr’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/daux.f:48:31:
      
         48 |       SUBROUTINE XERRWD (MSG, NMES, NERR, LEVEL, NI, I1, I2, NR, R1, R2)
            |                               1~~~
      Warning: Unused dummy argument ‘nmes’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/daux.f:214:28:
      
        214 |       INTEGER FUNCTION IXSAV (IPAR, IVALUE, ISET)
            |                            ^
      Warning: ‘__result_ixsav’ may be used uninitialized [-Wmaybe-uninitialized]
      [10/40] Compiling Fortran object ddaspk.cpython-313-x86_64-linux-gnu.so.p/src_scikits_odes_daepack_daepack_cfode.f.o
      ../src/scikits_odes_daepack/daepack/cfode.f:62:72:
      
         62 |  110      pc(i) = pc(i-1) + fnqm1*pc(i)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 110 at (1)
      ../src/scikits_odes_daepack/daepack/cfode.f:71:72:
      
         71 |  120      xpin = xpin + tsign*pc(i)/dfloat(i+1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 120 at (1)
      ../src/scikits_odes_daepack/daepack/cfode.f:76:72:
      
         76 |  130      elco(i+1,nq) = rq1fac*pc(i)/dfloat(i)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 130 at (1)
      ../src/scikits_odes_daepack/daepack/cfode.f:99:72:
      
         99 |  210      pc(i) = pc(i-1) + fnq*pc(i)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 210 at (1)
      ../src/scikits_odes_daepack/daepack/cfode.f:103:72:
      
        103 |  220      elco(i,nq) = pc(i)/pc(2)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 220 at (1)
      [11/40] Compiling C object lsodi.cpython-313-x86_64-linux-gnu.so.p/8a4aafec260ca9819ea0def4383656a816c02b10_site-packages_numpy_f2py_src_fortranobject.c.o
      [12/40] Compiling C object ddaspk.cpython-313-x86_64-linux-gnu.so.p/8a4aafec260ca9819ea0def4383656a816c02b10_site-packages_numpy_f2py_src_fortranobject.c.o
      [13/40] Compiling C object lsodi.cpython-313-x86_64-linux-gnu.so.p/meson-generated_.._lsodimodule.c.o
      [14/40] Compiling Fortran object ddaspk.cpython-313-x86_64-linux-gnu.so.p/src_scikits_odes_daepack_daepack_ddaspk.f.o
      ../src/scikits_odes_daepack/daepack/ddaspk.f:1696:72:
      
       1696 |  305      RWORK(LVT+I-1) = MAX(IWORK(LID+I-1),0)*RWORK(LWT+I-1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 305 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:1822:72:
      
       1822 |  357      RWORK(LVT+I-1) = MAX(IWORK(LID+I-1),0)*RWORK(LWT+I-1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 357 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:1861:72:
      
       1861 | 380      RWORK(ITEMP + I - 1) = H*YPRIME(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 380 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2018:72:
      
       2018 |  515      RWORK(LVT+I-1) = MAX(IWORK(LID+I-1),0)*RWORK(LWT+I-1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 515 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2035:72:
      
       2035 | 524        ATOL(I)=R*ATOL(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 524 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2765:72:
      
       2765 | 260         PHI(I,J)=BETA(J)*PHI(I,J)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 260 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2816:72:
      
       2816 | 405     DELTA(I) = PHI(I,KP1) + E(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 405 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2824:72:
      
       2824 | 415     DELTA(I) = PHI(I,K) + DELTA(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 415 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2873:72:
      
       2873 | 510      DELTA(I)=E(I)-PHI(I,KP2)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 510 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2923:72:
      
       2923 | 580      PHI(I,KP2)=E(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 580 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2926:72:
      
       2926 | 590      PHI(I,KP1)=PHI(I,KP1)+E(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 590 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2929:72:
      
       2929 |          DO 595 I=1,NEQ
            |                                                                        1
      Warning: Fortran 2018 deleted feature: Shared DO termination label 595 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2930:72:
      
       2930 | 595      PHI(I,J)=PHI(I,J)+PHI(I,J+1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 595 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2955:72:
      
       2955 | 610         PHI(I,J)=TEMP1*PHI(I,J)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 610 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2959:72:
      
       2959 | 640      PSI(I-1)=PSI(I)-H
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 640 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3051:72:
      
       3051 | 695       PHI(I,2) = R*PHI(I,2)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 695 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3302:72:
      
       3302 |  20     WT(I) = 1.0D0/WT(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 20 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3349:72:
      
       3349 | 10       YPOUT(I)=0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 10 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3359:72:
      
       3359 | 20          YPOUT(I)=YPOUT(I)+D*PHI(I,J)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 20 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3391:72:
      
       3391 | 20      SUM = SUM + ((V(I)*RWT(I))/VMAX)**2
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 20 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3826:72:
      
       3826 |  20           P(I) = P(I)*RATIO1
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 20 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4136:72:
      
       4136 | 310      YPRIME(I)=0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 310 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4140:72:
      
       4140 | 320         YPRIME(I)=YPRIME(I)+GAMMA(J)*PHI(I,J)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 320 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4191:72:
      
       4191 | 377      DELTA(I) = MIN(Y(I),0.0D0)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 377 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4195:72:
      
       4195 | 378      E(I) = E(I) - DELTA(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 378 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4313:72:
      
       4313 | 100     E(I)=0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 100 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4324:72:
      
       4324 | 320        DELTA(I) = DELTA(I) * CONFAC
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 320 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4337:72:
      
       4337 | 340      YPRIME(I)=YPRIME(I)-CJ*DELTA(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 340 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4461:72:
      
       4461 | 110      WM(I)=0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 110 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4485:72:
      
       4485 | 220        WM(NROW+L)=(E(L)-DELTA(L))*DELINV
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 220 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4507:72:
      
       4507 | 410      WM(I)=0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 410 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4534:72:
      
       4534 | 510       YPRIME(N)=YPRIME(N)+CJ*DEL
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 510 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4551:72:
      
       4551 | 520         WM(II+I)=(E(I)-DELTA(I))*DELINV
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 520 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5091:72:
      
       5091 |  20           P(I) = P(I)*RATIO1
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 20 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5421:72:
      
       5421 | 310      YPRIME(I)=0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 310 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5425:72:
      
       5425 | 320         YPRIME(I)=YPRIME(I)+GAMMA(J)*PHI(I,J)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 320 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5475:72:
      
       5475 |  360    DELTA(I) = MIN(Y(I),0.0D0)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 360 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5479:72:
      
       5479 |  370    E(I) = E(I) - DELTA(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 370 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5606:72:
      
       5606 | 100     E(I) = 0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 100 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5617:72:
      
       5617 | 320       DELTA(I) = DELTA(I) * CONFAC
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 320 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5623:72:
      
       5623 | 340     SAVR(I) = DELTA(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 340 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5637:72:
      
       5637 | 360      YPRIME(I) = YPRIME(I) - CJ*DELTA(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 360 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5769:72:
      
       5769 |  110     X(I) = 0.D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 110 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5793:72:
      
       5793 |  120     X(I) = X(I) + WM(LZ+I-1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 120 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5964:72:
      
       5964 |  10     Z(I) = 0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 10 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5975:72:
      
       5975 |  30         V(I,1) = R(I)*WGHT(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 30 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5978:72:
      
       5978 |  35         V(I,1) = R(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 35 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5997:72:
      
       5997 |  60       HES(I,J) = 0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 60 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6038:72:
      
       6038 |  70             DL(K) = S*DL(K) + C*V(K,IP1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 70 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6045:72:
      
       6045 |  80         DL(K) = S*DL(K) + C*V(K,LLP1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 80 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6066:72:
      
       6066 |  130     Z(I) = 0.D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 130 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6088:72:
      
       6088 |  170              DL(K) = S*DL(K) + C*V(K,IP1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 170 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6093:72:
      
       6093 |  180           DL(K) = S*DL(K) + C*V(K,MAXLP1)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 180 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6110:72:
      
       6110 |  210    R(K) = 0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 210 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6114:72:
      
       6114 |  220    Z(K) = 0.0D0
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 220 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6119:72:
      
       6119 |  240    Z(I) = Z(I)/WGHT(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 240 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6221:72:
      
       6221 |  10     VTEM(I) = V(I)/WGHT(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 10 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6229:72:
      
       6229 |  20     Z(I) = Y(I) + VTEM(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 20 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6243:72:
      
       6243 |  70     Z(I) = VTEM(I) - SAVR(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 70 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6255:72:
      
       6255 |  90     Z(I) = Z(I)*WGHT(I)
            |                                                                        1
      Warning: Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 90 at (1)
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2369:3:
      
       2369 | 770   MSG = 'DASPK--  RUN TERMINATED. APPARENT INFINITE LOOP'
            |   1
      Warning: Label 770 at (1) defined but not used [-Wunused-label]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:1685:3:
      
       1685 | 300   CONTINUE
            |   1
      Warning: Label 300 at (1) defined but not used [-Wunused-label]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4189:3:
      
       4189 | 375   IF(NONNEG .EQ. 0) GO TO 390
            |   1
      Warning: Label 375 at (1) defined but not used [-Wunused-label]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3365:55:
      
       3365 |       DOUBLE PRECISION FUNCTION DDWNRM(NEQ,V,RWT,RPAR,IPAR)
            |                                                       1~~~
      Warning: Unused dummy argument ‘ipar’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3365:50:
      
       3365 |       DOUBLE PRECISION FUNCTION DDWNRM(NEQ,V,RWT,RPAR,IPAR)
            |                                                  1~~~
      Warning: Unused dummy argument ‘rpar’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4982:19:
      
       4982 |      *   WM, IWM, RHOK, FNRM, ICOPT, ID, WP, IWP, R, EPLIN, YNEW, YPNEW,
            |                   1~~~
      Warning: Unused dummy argument ‘rhok’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4982:10:
      
       4982 |      *   WM, IWM, RHOK, FNRM, ICOPT, ID, WP, IWP, R, EPLIN, YNEW, YPNEW,
            |          1~
      Warning: Unused dummy argument ‘wm’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4221:45:
      
       4221 |      *   DUMSVR,DELTA,E,WM,IWM,CJ,DUMS,DUMR,DUME,EPCON,
            |                                             1~~~
      Warning: Unused dummy argument ‘dume’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4221:40:
      
       4221 |      *   DUMSVR,DELTA,E,WM,IWM,CJ,DUMS,DUMR,DUME,EPCON,
            |                                        1~~~
      Warning: Unused dummy argument ‘dumr’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4221:35:
      
       4221 |      *   DUMSVR,DELTA,E,WM,IWM,CJ,DUMS,DUMR,DUME,EPCON,
            |                                   1~~~
      Warning: Unused dummy argument ‘dums’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4221:10:
      
       4221 |      *   DUMSVR,DELTA,E,WM,IWM,CJ,DUMS,DUMR,DUME,EPCON,
            |          1~~~~~
      Warning: Unused dummy argument ‘dumsvr’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4222:44:
      
       4222 |      *   S,CONFAC,TOLNEW,MULDEL,MAXIT,IRES,IDUM,IERNEW)
            |                                            1~~~
      Warning: Unused dummy argument ‘idum’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4220:42:
      
       4220 |       SUBROUTINE DNSD(X,Y,YPRIME,NEQ,RES,PDUM,WT,RPAR,IPAR,
            |                                          1~~~
      Warning: Unused dummy argument ‘pdum’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3248:53:
      
       3248 |       SUBROUTINE DDAWTS(NEQ,IWT,RTOL,ATOL,Y,WT,RPAR,IPAR)
            |                                                     1~~~
      Warning: Unused dummy argument ‘ipar’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3248:48:
      
       3248 |       SUBROUTINE DDAWTS(NEQ,IWT,RTOL,ATOL,Y,WT,RPAR,IPAR)
            |                                                1~~~
      Warning: Unused dummy argument ‘rpar’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3400:16:
      
       3400 |      *  UROUND,DUME,DUMS,DUMR,EPCON,RATEMX,STPTOL,JFDUM,
            |                1~~~
      Warning: Unused dummy argument ‘dume’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3399:52:
      
       3399 |      *  WT,JSDUM,RPAR,IPAR,DUMSVR,DELTA,R,YIC,YPIC,DUMPWK,WM,IWM,CJ,
            |                                                    1~~~~~
      Warning: Unused dummy argument ‘dumpwk’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3400:26:
      
       3400 |      *  UROUND,DUME,DUMS,DUMR,EPCON,RATEMX,STPTOL,JFDUM,
            |                          1~~~
      Warning: Unused dummy argument ‘dumr’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3400:21:
      
       3400 |      *  UROUND,DUME,DUMS,DUMR,EPCON,RATEMX,STPTOL,JFDUM,
            |                     1~~~
      Warning: Unused dummy argument ‘dums’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3399:28:
      
       3399 |      *  WT,JSDUM,RPAR,IPAR,DUMSVR,DELTA,R,YIC,YPIC,DUMPWK,WM,IWM,CJ,
            |                            1~~~~~
      Warning: Unused dummy argument ‘dumsvr’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3400:51:
      
       3400 |      *  UROUND,DUME,DUMS,DUMR,EPCON,RATEMX,STPTOL,JFDUM,
            |                                                   1~~~~
      Warning: Unused dummy argument ‘jfdum’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3399:12:
      
       3399 |      *  WT,JSDUM,RPAR,IPAR,DUMSVR,DELTA,R,YIC,YPIC,DUMPWK,WM,IWM,CJ,
            |            1~~~~
      Warning: Unused dummy argument ‘jsdum’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3398:58:
      
       3398 |       SUBROUTINE DDASID(X,Y,YPRIME,NEQ,ICOPT,ID,RES,JACD,PDUM,H,TSCALE,
            |                                                          1~~~
      Warning: Unused dummy argument ‘pdum’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:3957:22:
      
       3957 |      *   EPCON,JCALC,JFDUM,KP1,NONNEG,NTYPE,IERNLS)
            |                      1~~~~
      Warning: Unused dummy argument ‘jfdum’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:4617:65:
      
       4617 |      *   WT,JSKIP,RPAR,IPAR,SAVR,DELTA,R,YIC,YPIC,PWK,WM,IWM,CJ,UROUND,
            |                                                                 1~~~~~
      Warning: Unused dummy argument ‘uround’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5237:35:
      
       5237 |      *   WM,IWM,CJ,CJOLD,CJLAST,S,UROUND,EPLI,SQRTN,RSQRTN,
            |                                   1~~~~~
      Warning: Unused dummy argument ‘uround’ at (1) [-Wunused-dummy-argument]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:6062:10:
      
       6062 |       IF (RHO .LT. RNRM) GO TO 150
            |          ^
      Warning: ‘rho’ may be used uninitialized [-Wmaybe-uninitialized]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:5951:42:
      
       5951 |       DOUBLE PRECISION RNRM,C,DLNRM,PROD,RHO,S,SNORMW,DNRM2,TEM
            |                                          ^~~
      note: ‘rho’ was declared here
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2879:9:
      
       2879 | 520   IF(TERKM1.LE.MIN(TERK,TERKP1))GO TO 540
            |         ^
      Warning: ‘terkm1’ may be used uninitialized [-Wmaybe-uninitialized]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2818:7:
      
       2818 |       TERKM1 = K*ERKM1
            |       ^~~~~~
      note: ‘terkm1’ was declared here
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2908:72:
      
       2908 |       R=(2.0D0*EST+0.0001D0)**(-1.0D0/TEMP2)
            |                                                                        ^
      Warning: ‘erkm1’ may be used uninitialized [-Wmaybe-uninitialized]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2817:7:
      
       2817 |       ERKM1=SIGMA(K)*DDWNRM(NEQ,DELTA,VT,RPAR,IPAR)
            |       ^~~~~
      note: ‘erkm1’ was declared here
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2998:72:
      
       2998 |       R = 0.90D0*(2.0D0*EST+0.0001D0)**(-1.0D0/TEMP2)
            |                                                                        ^
      Warning: ‘est’ may be used uninitialized [-Wmaybe-uninitialized]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2812:7:
      
       2812 |       EST = ERK
            |       ^~~
      note: ‘est’ was declared here
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2997:72:
      
       2997 |       TEMP2 = K + 1
            |                                                                        ^
      Warning: ‘knew’ may be used uninitialized [-Wmaybe-uninitialized]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:2813:7:
      
       2813 |       KNEW=K
            |       ^~~~
      note: ‘knew’ was declared here
      ../src/scikits_odes_daepack/daepack/ddaspk.f:1771:10:
      
       1771 |       IF (INDEX .EQ. 0) TSCALE = TDIST
            |          ^
      Warning: ‘index’ may be used uninitialized [-Wmaybe-uninitialized]
      ../src/scikits_odes_daepack/daepack/ddaspk.f:1572:7:
      
       1572 |       INDEX = 1
            |       ^~~~~
      note: ‘index’ was declared here
      ninja: build stopped: subcommand failed.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.

[notice] A new release of pip is available: 25.2 -> 25.3
[notice] To update, run: pip install --upgrade pip
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

[sergiocallegari]

Now, what is strange is that using uv, I have a cached scikits.odes-daepack 3.0.0 for python 3.13, which means that at some point in time my system managed building it. I cannot say what has changed, though.

[sergiocallegari]

The mystery is probably solved. The C code produced by f2py is not compliant with the c23 standard, that is now the default in gcc.

editing meson.build to start with:

project('scikits-odes-daepack',
  ['c', 'fortran'],
  version : '3.0.0',
  meson_version: '>= 1.1.0',
  default_options : [
    'warning_level=1',
    'buildtype=release',
    'c_std=c17',
  ])

seems to fix the issue.