[syslinux:elflink] lwip: Allow LWIP_PLATFORM_* output to use dprintf

[syslinux-bot for Gene Cumm]

Commit-ID:  3b32118a7303fa7357d607772c383ff9c1218417
Gitweb:     http://www.syslinux.org/commit/3b32118a7303fa7357d607772c383ff9c1218417
Author:     Gene Cumm <gene.cumm at gmail.com>
AuthorDate: Sun, 2 Oct 2011 12:55:20 -0400
Committer:  Gene Cumm <gene.cumm at gmail.com>
CommitDate: Fri, 12 Jul 2013 21:28:47 -0400

lwip: Allow LWIP_PLATFORM_* output to use dprintf

Signed-off-by: Gene Cumm <gene.cumm at gmail.com>

---
 core/lwip/src/include/arch/cc.h | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/core/lwip/src/include/arch/cc.h b/core/lwip/src/include/arch/cc.h
index 677ef4f..5ab13de 100644
--- a/core/lwip/src/include/arch/cc.h
+++ b/core/lwip/src/include/arch/cc.h
@@ -21,9 +21,19 @@ typedef uintptr_t mem_ptr_t;
 
 #define PACK_STRUCT_STRUCT	__packed
 
+#define LWIP_PLATFORM_USE_DPRINTF
+
+#ifdef LWIP_PLATFORM_USE_DPRINTF
+#  include <dprintf.h>
+#  define LWIP_PLATFORM_PRINTF dprintf
+#else
+#  define LWIP_PLATFORM_PRINTF printf
+#endif
+
+
 #if 1
-#define LWIP_PLATFORM_DIAG(x)	do { printf x; } while(0)
-#define LWIP_PLATFORM_ASSERT(x)	do { printf("LWIP(%s,%d,%p): %s", __FILE__, __LINE__, __builtin_return_address(0), (x)); kaboom(); } while(0)
+#define LWIP_PLATFORM_DIAG(x)	do { LWIP_PLATFORM_PRINTF x; } while(0)
+#define LWIP_PLATFORM_ASSERT(x)	do { LWIP_PLATFORM_PRINTF("LWIP(%s,%d,%p): %s", __FILE__, __LINE__, __builtin_return_address(0), (x)); kaboom(); } while(0)
 #else
 #define LWIP_PLATFORM_DIAG(x)	((void)0) /* For now... */
 #define LWIP_PLATFORM_ASSERT(x)	kaboom()