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arch.h: Add hint for struct packing #defines on GCC/clang

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This commit is contained in:
Dirk Ziegelmeier 2016-12-08 11:13:51 +01:00
parent 89cb7b7aa1
commit a420d2530f
1 changed files with 4 additions and 1 deletions
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5
src/include/lwip/arch.h
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@ -166,18 +166,22 @@ typedef uintptr_t mem_ptr_t;
extern "C" {
#endif
/* GCC/clang: Nothing to do */
#ifndef PACK_STRUCT_BEGIN
#define PACK_STRUCT_BEGIN
#endif /* PACK_STRUCT_BEGIN */
/* GCC/clang: Nothing to do */
#ifndef PACK_STRUCT_END
#define PACK_STRUCT_END
#endif /* PACK_STRUCT_END */
/* GCC/clang: #define PACK_STRUCT_STRUCT __attribute__((packed)) */
#ifndef PACK_STRUCT_STRUCT
#define PACK_STRUCT_STRUCT
#endif /* PACK_STRUCT_STRUCT */
/* GCC/clang: Nothing to do */
#ifndef PACK_STRUCT_FIELD
#define PACK_STRUCT_FIELD(x) x
#endif /* PACK_STRUCT_FIELD */
@ -199,7 +203,6 @@ extern "C" {
#define LWIP_UNUSED_ARG(x) (void)x
#endif /* LWIP_UNUSED_ARG */
#ifdef __cplusplus
}
#endif