configure: Use AC_USE_SYSTEM_EXTENSIONS
authorColin Walters <walters@verbum.org>
Fri, 26 Jul 2013 11:39:51 +0000 (12:39 +0100)
committerColin Walters <walters@verbum.org>
Fri, 26 Jul 2013 18:46:21 +0000 (19:46 +0100)
commitd2bb019533bbcbd1cee3891822ac7ba6ff55ad3d
treee8e724e16dab8a35e4e93e2df2896538441a6fd1
parent3b01cbe8a8a9ee2d1169f072624069877b91097c
configure: Use AC_USE_SYSTEM_EXTENSIONS

...instead of detecting glibc and using _GNU_SOURCE manually.  This
should fix the build when using glibc-emulating libraries; we can
defer portability work to autoconf.

https://bugzilla.gnome.org/show_bug.cgi?id=684123
configure.ac