Re: port-powerpc/56892: powerpc ieeefp.h fails if _ISOC99_SOURCE is defined

[Havard Eidnes <he%NetBSD.org@localhost>]

The following reply was made to PR port-powerpc/56892; it has been noted by GNATS.

From: Havard Eidnes <he%NetBSD.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-powerpc/56892: powerpc ieeefp.h fails if _ISOC99_SOURCE
 is defined
Date: Mon, 20 Jun 2022 16:00:14 +0200 (CEST)

 So,
 
 a bit more information about where the include of <ieeefp.h>
 comes from:
 
 In file included from /usr/pkgsrc/math/py-scipy/work/.buildlink/include=
 /python3.9/pyport.h:202,
                  from /usr/pkgsrc/math/py-scipy/work/.buildlink/include=
 /python3.9/Python.h:50,
                  from scipy/stats/_unuran/unuran_wrapper.c:6:
 /usr/include/ieeefp.h:15:9: error: unknown type name 'fp_rnd'
    15 | typedef fp_rnd fp_rnd_t;
       |         ^~~~~~
 /usr/include/ieeefp.h:19:9: error: unknown type name 'fp_except'
    19 | typedef fp_except fp_except_t;
       |         ^~~~~~~~~
 
 unuran_wrapper.c line 6:
 
 #include "Python.h"
 
 Python.h line 50:
 
 #include "pyport.h"
 
 and around line 202 of pyport.h:
 
 #ifdef HAVE_IEEEFP_H
 #include <ieeefp.h>  /* needed for 'finite' declaration on some platfor=
 ms */
 #endif
 
 and that file will fail to build on NetBSD/powerpc with the above
 errors if _ISOC99_SOURCE is defined at that point, causing those
 types to not be defined.
 
 I'm currently building py-scipy with python 3.9 with this patch added:
 
 ------------------------------ snip
 $NetBSD$
 
 On NetBSD/powerpc, you can't build with _ISOC99_SOURCE defined,
 the include of <ieeefp.h> in the python headers will fail with
 undefined types.
 
 --- ./scipy/stats/_unuran/setup.py.orig 2022-05-16 12:36:53.864307900 +=
 0000
 +++ ./scipy/stats/_unuran/setup.py
 @@ -95,7 +95,6 @@ def configuration(parent_package=3D"", top
          ("UNUR_ENABLE_INFO", "1"),
          ("VERSION", '"%s"' % UNURAN_VERSION),
          ("HAVE_CONFIG_H", "1"),
 -        ("_ISOC99_SOURCE", "1"),
      ]
  =
 
      UNURAN_DIRS =3D [
 ------------------------------ snip
 
 ...and with that the build of py-scipy completes.
 
 Regards,
 
 - H=E5vard