From mboxrd@z Thu Jan 1 00:00:00 1970 From: York Sun Date: Tue, 30 Jul 2013 14:29:41 -0700 Subject: [U-Boot] getline prototype issue In-Reply-To: References: <51F82C5B.3050402@freescale.com> Message-ID: <51F83045.5050500@freescale.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 07/30/2013 02:17 PM, Simon Glass wrote: > Hi York, > > On Tue, Jul 30, 2013 at 3:12 PM, York Sun > wrote: > > Simon, > > Your patch > > commit 669dfc2ed8d853d6bcdcafa1de6aca22929465e5 > Author: Simon Glass > > 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? > > > I took a quick look at this. It seems that many of the host C files in > tools/ define _GNU_SOURCE. Should we just move that #define to the Makefile? > Adding -D_GNU_SOURCE in Makefile can fix this problem. York