in app/test/meson.build the default_cflag is never used so the
-D_GNU_SOURCE was never passed as intended.
Fixes the following build error with musl libc:
lib/librte_eal/common/include/rte_lcore.h:26:9: error:
unknown type name 'cpu_set_t'
typedef cpu_set_t rte_cpuset_t;
^~~~~~~~~
The problem is that cpu_set_t is only defined when _GNU_SOURCE is set.
Fixes: 5d7b673d5f ("mk: build with _GNU_SOURCE defined by default")
Cc: stable@dpdk.org
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
302ea8e0fa