From 8e9c6f5e57ad3998a150ce34e75a2864cd85fcc1 Mon Sep 17 00:00:00 2001
From: "Dmitrij D. Czarkoff" <czarkoff@gmail.com>
Date: Fri, 13 May 2016 05:57:03 +0200
Subject: Fix build of imv on GNU libc

Previously imv used -std=gnu11 flag which activated GNU "extensions" of C11
standard.  This masked a portability issue in imv: strduo(3) should not have
been visible in `src/loader.c` without inclusion of `<string.h>` header.  This
have been fixed.  To remidy GNU libc's stange choice to hide X/Open interfaces
in C99 code by default _XOPEN_SOURCE macro was also set.  (This should have no
effect on most other platforms.)
---
 Makefile     | 2 +-
 src/loader.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index e8c43e1..39ffdc7 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ MUTE :=	@
 endif
 
 CFLAGS ?= -W -Wall -pedantic -Wmissing-prototypes
-CFLAGS += -std=c99 $(shell sdl2-config --cflags)
+CFLAGS += -std=c99 $(shell sdl2-config --cflags) -D_XOPEN_SOURCE=700
 LDFLAGS += $(shell sdl2-config --libs) -lfreeimage -lSDL2_ttf -lfontconfig -lpthread
 
 BUILDDIR ?= build
diff --git a/src/loader.c b/src/loader.c
index 91d0d2f..0e7079e 100644
--- a/src/loader.c
+++ b/src/loader.c
@@ -19,6 +19,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #include "texture.h"
 #include <limits.h>
 #include <stdlib.h>
+#include <string.h>
 #include <pthread.h>
 #include <signal.h>
 
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