Looks like this syscall has been in the kernel a while, but glibc only added it
in 2.27:
http://man7.org/linux/man-pages/man2/memfd_create.2.html
VERSIONS
The memfd_create() system call first appeared in Linux 3.17; glibc
support was added in version 2.27.
I suspect we'll have to rename our function of the same name.
Chris.
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of nico
> Sent: Sunday, February 11, 2018 5:14
> To: [email protected]
> Subject: [vpp-dev] vpp compilation error against glibc2.27
>
> Hi,
>
>
> Since my distrib ( slackware-current) updated the glibc package from
> 2.26 to 2.27, got this vpp compilation error:
>
> CC vppinfra/timer.lo
> CC tools/vppapigen/lex.o
> In file included from
> /home/vpp/dev/vpp/build-root/../src/vppinfra/linux/mem.c:31:0:
> /home/vpp/dev/vpp/build-root/../src/vppinfra/linux/syscall.h:43:1:
> error: static declaration of ‘memfd_create’ follows non-static declaration
> memfd_create (const char *name, unsigned int flags)
> ^~~~~~~~~~~~
> In file included from /usr/include/bits/mman-linux.h:115:0,
> from /usr/include/bits/mman.h:45,
> from /usr/include/sys/mman.h:41,
> from
> /home/vpp/dev/vpp/build-root/../src/vppinfra/linux/mem.c:22:
> /usr/include/bits/mman-shared.h:46:5: note: previous declaration of
> ‘memfd_create’ was here
> int memfd_create (const char *__name, unsigned int __flags) __THROW;
> ^~~~~~~~~~~~
> make[4]: *** [Makefile:6787: vppinfra/linux/mem.lo] Error 1
> make[4]: *** Waiting for unfinished jobs....
> make[4]: Leaving directory
> '/home/vpp/dev/vpp/build-root/build-tool-native/tools'
> make[3]: *** [Makefile:7757: all-recursive] Error 1
> make[3]: Leaving directory
> '/home/vpp/dev/vpp/build-root/build-tool-native/tools'
> make[2]: *** [Makefile:3967: all] Error 2
> make[2]: Leaving directory
> '/home/vpp/dev/vpp/build-root/build-tool-native/tools'
> make[1]: *** [Makefile:686: tools-build] Error 2
> make[1]: Leaving directory '/home/vpp/dev/vpp/build-root'
> make: *** [Makefile:259: /home/vpp/dev/vpp/build-root/.bootstrap.ok]
> Error 2
>
>
> Cannot tell if it's more on the VPP or GLIBC side, but though it's worth
> reporting.
>
> Will try to rollback to glibc2.26
>
>
> Regards,
>
> Nico
>
>
>
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