- Fix build on 7.X

Submitted by:	maintainer

multimedia/libva/Makefile

@@ -36,6 +36,11 @@ CFLAGS+=	-DHAVE_LINUX_INTEGER_TYPES
 
 .include <bsd.port.pre.mk>
 
+# add strnlen(3) from head/lib/libc/string/strnlen.c
+.if ${OSVERSION} < 800067
+EXTRA_PATCHES+=	${PATCHDIR}/extra-patch-va-va_trace.c
+.endif
+
 .if !defined(WITH_DEBUG)
 CFLAGS+=	-DNDEBUG
 .else

multimedia/libva/files/extra-patch-va-va_trace.c

@@ -0,0 +1,20 @@
+--- va/va_trace.c~
++++ va/va_trace.c
+@@ -140,6 +140,17 @@ VAStatus vaUnlockSurface(VADisplay dpy,
+                          VASurfaceID surface
+                          );
+ 
++static size_t
++strnlen(const char *s, size_t maxlen)
++{
++	size_t len;
++
++	for (len = 0; len < maxlen; len++, s++) {
++		if (!*s)
++			break;
++	}
++	return (len);
++}
+ 
+ void va_TraceInit(VADisplay dpy)
+ {