[U-Boot] getline prototype issue

[York Sun <yorksun@freescale.com>]

Simon,

Your patch

commit 669dfc2ed8d853d6bcdcafa1de6aca22929465e5
Author: Simon Glass <sjg@chromium.org>
Date:   Mon Mar 11 06:30:27 2013 +0000

    fdt: Ensure that libfdt_env.h comes from U-Boot

adds libfdt_env.h to HOSTCPPFLAGS. The causes a problem with one of our
older hosts. On the old hosts, getline prototype is protected by

#ifdef __USE_GNU

This should be OK if the C file has #define _GNU_SOURCE. However,
because of your patch, the stdio.h is included before _GNU_SOURCE is
defined. The result is warnings like this

aisimage.c: In function ?aisimage_generate?:
aisimage.c:313: warning: implicit declaration of function ?getline?
kwbimage.c: In function ?kwdimage_set_ext_header?:
kwbimage.c:236: warning: implicit declaration of function ?getline?
imximage.c: In function ?parse_cfg_file?:
imximage.c:430: warning: implicit declaration of function ?getline?
pblimage.c: In function ?pbl_parser?:
pblimage.c:137: warning: implicit declaration of function ?getline?
ublimage.c: In function ?parse_cfg_file?:
ublimage.c:179: warning: implicit declaration of function ?getline?

York