tree 477268f1ce9d1ea7367250fcc9b1a6e3591ea2b6
parent eb6767273a4eb5d6f4ad528370d7262cf7aa220c
author willson-chen <willson.chenwx@gmail.com> 1564473673 +0800
committer Cosmin Truta <ctruta@gmail.com> 1587962766 -0400

Fix a warning on Linux caused by _BSD_SOURCE

I got a warning while compiling under Ubuntu 18.04 and gcc 7.4:
"__BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"

Quote from the Linux Programmer's Manual:
"To allow code that requires _BSD_SOURCE in glibc 2.19 and earlier and
_DEFAULT_SOURCE in glibc 2.20 and later to compile without warnings,
define both _BSD_SOURCE and _DEFAULT_SOURCE."