preinit: define _GNU_SOURCE
authorHans Dedecker <dedeckeh@gmail.com>
Fri, 16 Jun 2017 14:09:01 +0000 (16:09 +0200)
committerHans Dedecker <hans.dedecker@technicolor.com>
Fri, 16 Jun 2017 14:23:36 +0000 (16:23 +0200)
In uClibc getdelim is only defined if _GNU_SOURCE is defined; fix
compilation issue by defining _GNU_SOURCE

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

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