willson-chen 52ee167644 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."
2020-04-27 00:46:06 -04:00
..
2018-08-19 00:57:20 -04:00
2016-08-29 19:07:25 +05:30
2018-02-09 06:57:29 -05:00
2018-08-19 00:57:20 -04:00

This "contrib" directory contains contributions which are not necessarily under
the libpng license, although all are open source.  They are not part of
libpng proper and are not used for building the library, although some are used
for testing the library via "make check".