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On Tue, 2026-02-10 at 11:45 +0100, Frederik Schwan wrote:
> I've pushed glibc 2.43 to testing. Do not move packages linked
> against 2.43 to extra or core until glibc itself moves around
> Thursday/Friday.
> Otherwise the package will probably break.
>=20
> Best regards,
> Frederik

Hi Frederik

I wonder if the compile error below might be related to this update
since it seems to have just started happening. May not be related of
course.

Either way, it would be great if someone can suggest a fix for this
build error?

test machine is updated using testing repos.=C2=A0i.e.

  binutils 2.46-1
  gcc 15.2.1+r604+g0b99615a8aef-1
  glibc 2.43+r5+g856c426a7534-1
  python 3.14.2-2

Building libcamera gets macro conflicts between the definitions from
glibc vs python. This could be happening because libcamera compiles
with -std=3Dc++17.

What I see is that:
=C2=A0 /usr/include/features.h =C2=A0 =C2=A0(glibc)
vs
=C2=A0 /usr/include/python3.14/pyconfig.h (python)

and features.h defines =C2=A0_POSIX_C_SOURCE values
of=C2=A0
 - 200809L varies depending on _XOPEN_SOURCE
 - 202405L if _GNU_SOURCE is set

On other hand, pyconfig.h fixes the value to 2008:

   /* Define to activate features from IEEE Stds 1003.1-2008 */
   #define _POSIX_C_SOURCE 200809L

which "suggests" that this is the value libcamera should also use
maybe?

Building libcamera started having these errors (similar ones for
_XOPEN_SOURCE as well):
=20
/usr/include/python3.14/pyconfig.h:2007:9: error: =E2=80=98_POSIX_C_SOURCE=
=E2=80=99
redefined [-Werror]
 2007 | #define _POSIX_C_SOURCE 200809L

/usr/include/features.h:319:10: note: this is the location of the
previous definition
  319 | # define _POSIX_C_SOURCE        202405L

Happens with both the current version (0.7.0) as well as git head of
libcamera.

thank you for any guidance

gene



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