diff options
| -rw-r--r-- | docs/reference.rst | 3 | ||||
| -rw-r--r-- | pb.h | 11 |
2 files changed, 13 insertions, 1 deletions
diff --git a/docs/reference.rst b/docs/reference.rst index ccbf0a4d..8018bdb9 100644 --- a/docs/reference.rst +++ b/docs/reference.rst @@ -24,6 +24,9 @@ __BIG_ENDIAN__ Set this if your platform stores integers and floats in big-endian format. Mixed-endian systems (different layout for ints and floats) are currently not supported. +PB_NO_PACKED_STRUCTS Disable packed structs. Increases RAM usage but + is necessary on some platforms that do not + support unaligned memory access. PB_ENABLE_MALLOC Set this to enable dynamic allocation support in the decoder. PB_MAX_REQUIRED_FIELDS Maximum number of required fields to check for @@ -17,6 +17,10 @@ * stores the most-significant byte first. */ /* #define __BIG_ENDIAN__ 1 */ +/* Define this if your CPU / compiler combination does not support + * unaligned memory access to packed structures. */ +/* #define PB_NO_PACKED_STRUCTS 1 */ + /* Increase the number of required fields that are tracked. * A compiler warning will tell if you need this. */ /* #define PB_MAX_REQUIRED_FIELDS 256 */ @@ -75,7 +79,12 @@ /* Macro for defining packed structures (compiler dependent). * This just reduces memory requirements, but is not required. */ -#if defined(__GNUC__) || defined(__clang__) +#if defined(PB_NO_PACKED_STRUCTS) + /* Disable struct packing */ +# define PB_PACKED_STRUCT_START +# define PB_PACKED_STRUCT_END +# define pb_packed +#elif defined(__GNUC__) || defined(__clang__) /* For GCC and clang */ # define PB_PACKED_STRUCT_START # define PB_PACKED_STRUCT_END |