[Buildroot] [PATCH] package/systemd: import daemon needs headers >= 3.11

[Yann E. MORIN <yann.morin.1998@free.fr>]

Peter, All,

On 2016-07-17 09:02 +0200, Peter Korsgaard spake thusly:
> >>>>> "Yann" == Yann E MORIN <yann.morin.1998@free.fr> writes:
>  > So, I built a toolchain with Linux headers 3.10 and glibc 2.18. And
>  > systemd-importd does not build:
> 
>  >     src/import/export-raw.c: In function 'reflink_snapshot':
>  >     src/import/export-raw.c:271:26: error: 'O_TMPFILE' undeclared (first use in this function)
>  >              new_fd = open(d, O_TMPFILE|O_CLOEXEC|O_NOCTTY|O_RDWR, 0600);
>  >                               ^
>  >     src/import/export-raw.c:271:26: note: each undeclared identifier is reported only once for each function it appears in
>  >     Makefile:16515: recipe for target 'src/import/systemd_export-export-raw.o' failed
> 
>  > O_TMPFILE was added in Linux 3.11; glibc added the corresponding
>  > definition in glib-2.19.
> 
>  >     glibc \ linux   | <= 3.10   | >= 3.11   |
>  >     ----------------+-----------+-----------+
>  >     <= 2.18         | No        | No*       |
>  >> = 2.19         | Yes       | Yes       |
> 
>  > *: headers 3.12
> 
>  > So, not sure where to go from there...
> 
>  > Note: I have not tested uClibc or musl, because,well, systemd depends on
>  > glibc...
> 
> I would just go for  >= glibc 2.19. People are unlikely to use old glibc
> with new kernel headers (and it cannot be built with buildroot).

So, should we add GLIBC_AT_LEAST_X_Y symbols?

Regards,
Yann E. MORIN.

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