// The tendency of gcc to produce stupid warnings continues with // warn_unsed_result, which warns about things like ignoring the return code // of nice(2) (which is completely useless since -1 is a legitimate return // value on success and even the man page tells you to use errno instead). // This makes it stop. #undef _FORTIFY_SOURCE // Humor glibc to get dprintf, then #define it to something more portable. #define _GNU_SOURCE #include <stdio.h> #define fdprintf(...) dprintf(__VA_ARGS__) #ifdef __GNUC__ #define noreturn __attribute__((noreturn)) #else #define noreturn #endif #ifndef __APPLE__ #include <byteswap.h> #include <endian.h> #if __BYTE_ORDER == __BIG_ENDIAN #define IS_BIG_ENDIAN 1 #else #define IS_BIG_ENDIAN 0 #endif #else #ifdef __BIG_ENDIAN__ #define IS_BIG_ENDIAN 1 #else #define IS_BIG_ENDIAN 0 #endif #endif #if IS_BIG_ENDIAN #define IS_LITTLE_ENDIAN 0 #define SWAP_BE16(x) (x) #define SWAP_BE32(x) (x) #define SWAP_BE64(x) (x) #define SWAP_LE16(x) bswap_16(x) #define SWAP_LE32(x) bswap_32(x) #define SWAP_LE64(x) bswap_64(x) #else #define IS_LITTLE_ENDIAN 1 #define SWAP_BE16(x) bswap_16(x) #define SWAP_BE32(x) bswap_32(x) #define SWAP_BE64(x) bswap_64(x) #define SWAP_LE16(x) (x) #define SWAP_LE32(x) (x) #define SWAP_LE64(x) (x) #endif // Some versions of gcc produce spurious "may be uninitialized" warnings in // cases where it provably can't happen. Unfortunately, although this warning // is calculated and produced separately from the "is definitely used // uninitialized" warnings, there's no way to turn off the broken spurious "may // be" warnings without also turning off the non-broken "is" warnings. #if CFG_TOYBOX_DEBUG #define GCC_BUG =0 #else #define GCC_BUG #endif