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Add documentation for LWIP_PROVIDE_ERRNO in arch.h

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This commit is contained in:
Dirk Ziegelmeier 2017-02-02 09:18:30 +01:00
parent 29b7c75a72
commit 2ad03b0ebd
1 changed files with 9 additions and 1 deletions
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10
src/include/lwip/arch.h
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@ -278,7 +278,7 @@ extern "C" {
#define PACK_STRUCT_FLD_S(x) PACK_STRUCT_FIELD(x) #define PACK_STRUCT_FLD_S(x) PACK_STRUCT_FIELD(x)
#endif /* PACK_STRUCT_FLD_S */ #endif /* PACK_STRUCT_FLD_S */
/** Packed structs support using \#include files before and after struct to be packed.\n /** PACK_STRUCT_USE_INCLUDES==1: Packed structs support using \#include files before and after struct to be packed.\n
* The file included BEFORE the struct is "arch/bpstruct.h".\n * The file included BEFORE the struct is "arch/bpstruct.h".\n
* The file included AFTER the struct is "arch/epstruct.h".\n * The file included AFTER the struct is "arch/epstruct.h".\n
* This can be used to implement struct packing on MS Visual C compilers, see * This can be used to implement struct packing on MS Visual C compilers, see
@ -295,6 +295,14 @@ extern "C" {
#define LWIP_UNUSED_ARG(x) (void)x #define LWIP_UNUSED_ARG(x) (void)x
#endif /* LWIP_UNUSED_ARG */ #endif /* LWIP_UNUSED_ARG */
/** LWIP_PROVIDE_ERRNO==1: Let lwIP provide ERRNO values and the 'errno' variable.
* If this is disabled, cc.h must either define 'errno', include <errno.h> or
* define LWIP_ERRNO_INCLUDE to <errno.h> or equivalent.
*/
#if defined __DOXYGEN__
#define LWIP_PROVIDE_ERRNO
#endif
/** /**
* @} * @}
*/ */