glibc warning: _BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE #1978
Description
Compiling jq 1.6 with glibc >=2.20 (2.20 released 5 years ago!) gives a warning:
In file included from jq/src/builtin.c:10:
In file included from /usr/include/sys/time.h:21:
/usr/include/features.h:184:3: warning: "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
Relevant piece from glibc 2.20 release notes:
* The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
supported; they now act the same as _DEFAULT_SOURCE (but generate a
warning).