[dpdk-dev] [PATCH v5 04/17] build: define _GNU_SOURCE globally
bruce.richardson at intel.com
Fri Feb 26 10:46:56 CET 2021
On Fri, Feb 26, 2021 at 10:40:32AM +0100, Thomas Monjalon wrote:
> 26/02/2021 10:08, Bruce Richardson:
> > On Thu, Feb 25, 2021 at 07:22:37PM +0100, Thomas Monjalon wrote:
> > > There was an intent to define _GNU_SOURCE globally,
> > > but it was not set in pkg-config for external applications.
> > >
> > Is this something that we really want to do, to force all external apps to
> > use _GNU_SOURCE when compiling? Do some of our header files rely on
> > definitions only available with _GNU_SOURCE? If so, we should probably look
> > to remove that dependency rather than mandating the define.
> From patch 5:
> In musl libc, cpu_set_t is defined only if _GNU_SOURCE is defined.
> If we avoid mandating _GNU_SOURCE,
> we must #ifdef functions relying on rte_cpuset_t in the headers:
> - rte_lcore_cpuset
> - rte_thread_set_affinity
> - rte_thread_get_affinity
> - rte_telemetry_init (internal)
> Or a different trick in linux/include/rte_os.h could be:
> typedef void rte_cpuset_t;
> so it allows including files, but not using above functions of course.
Can we just define _GNU_SOURCE in the header file with rte_cpuset_t?
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