lwip: Minimal configuration to get lwip building in syslinux

- Disable all of lwip advanced features
- Redeclare kaboom because including core.h causes the
  artificial namespace conflict on lfree.
t
  lfree is a global sylinux function and lwip static variable.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/core/lwip/src/include/arch/cc.h b/core/lwip/src/include/arch/cc.h
new file mode 100644
index 00000000..0df87f7d
--- /dev/null
+++ b/core/lwip/src/include/arch/cc.h
@@ -0,0 +1,36 @@
+#ifndef __LWIP_ARCH_CC_H__
+#define __LWIP_ARCH_CC_H__
+
+#include <klibc/compiler.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#define BYTE_ORDER LITTLE_ENDIAN
+
+typedef uint8_t  u8_t;
+typedef int8_t   s8_t;
+typedef uint16_t u16_t;
+typedef int16_t  s16_t;
+typedef uint32_t u32_t;
+typedef int32_t  s32_t;
+
+typedef uintptr_t mem_ptr_t;
+
+extern __noreturn _kaboom(void);
+#define kaboom() _kaboom()
+
+#define PACK_STRUCT_STRUCT	__packed
+
+#define LWIP_PLATFORM_DIAG(x)	((void)0) /* For now... */
+#define LWIP_PLATFORM_ASSERT(x)	kaboom()
+
+#define U16_F	PRIu16
+#define S16_F	PRId16
+#define X16_F	PRIx16
+#define U32_F	PRIu16
+#define S32_F	PRId16
+#define X32_F	PRIx16
+#define SZT_F	"zu"
+
+#endif /* __LWIP_ARCH_CC_H__ */