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More header fiddling: crypt.h is silly, SUSv4 requires crypt() to be prototyped in unistd.h. The fact glibc refuses to do so without a wacky #define is a glibc bug, treat it as such.
author Rob Landley <rob@landley.net>
date Sat, 16 Jun 2012 14:19:56 -0500
parents b2194045c40e
children 8871e8002812
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9051cb744d0a Shut up even MORE gcc/glibc spurious warnings.
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1 // The tendency of gcc to produce stupid warnings continues with
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2 // warn_unused_result, which warns about things like ignoring the return code
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3 // of nice(2) (which is completely useless since -1 is a legitimate return
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4 // value on success and even the man page tells you to use errno instead).
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5
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6 // This makes it stop.
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7
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8 #undef _FORTIFY_SOURCE
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9
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10 #define _FILE_OFFSET_BITS 64
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58d2fd7484bd More header fiddling: crypt.h is silly, SUSv4 requires crypt() to be prototyped in unistd.h. The fact glibc refuses to do so without a wacky #define is a glibc bug, treat it as such.
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12 // This isn't in the spec, but it's how we determine what we're using.
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14 #include <features.h>
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16 #ifdef __GLIBC__
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17 // An SUSv4 function that glibc refuses to #define without crazy #defines,
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18 // see http://pubs.opengroup.org/onlinepubs/9699919799/functions/strptime.html
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19 #include <time.h>
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20 char *strptime(const char *buf, const char *format, struct tm *tm);
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58d2fd7484bd More header fiddling: crypt.h is silly, SUSv4 requires crypt() to be prototyped in unistd.h. The fact glibc refuses to do so without a wacky #define is a glibc bug, treat it as such.
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21 // Another one. "Function prototypes shall be provided." but aren't.
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22 // http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/unistd.h.html
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23 char *crypt(const char *key, const char *salt);
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24 #endif
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25
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26 #ifdef __GNUC__
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27 #define noreturn __attribute__((noreturn))
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28 #else
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29 #define noreturn
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30 #endif
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32 #ifndef __APPLE__
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33 #include <byteswap.h>
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34 #include <endian.h>
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35
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36 #if __BYTE_ORDER == __BIG_ENDIAN
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37 #define IS_BIG_ENDIAN 1
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38 #else
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39 #define IS_BIG_ENDIAN 0
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40 #endif
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41
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42 int clearenv(void);
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43 #else
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45 #ifdef __BIG_ENDIAN__
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46 #define IS_BIG_ENDIAN 1
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47 #else
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48 #define IS_BIG_ENDIAN 0
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49 #endif
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51 #endif
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53 #if IS_BIG_ENDIAN
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54 #define IS_LITTLE_ENDIAN 0
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55 #define SWAP_BE16(x) (x)
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56 #define SWAP_BE32(x) (x)
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57 #define SWAP_BE64(x) (x)
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58 #define SWAP_LE16(x) bswap_16(x)
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59 #define SWAP_LE32(x) bswap_32(x)
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60 #define SWAP_LE64(x) bswap_64(x)
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61 #else
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62 #define IS_LITTLE_ENDIAN 1
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63 #define SWAP_BE16(x) bswap_16(x)
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64 #define SWAP_BE32(x) bswap_32(x)
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65 #define SWAP_BE64(x) bswap_64(x)
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66 #define SWAP_LE16(x) (x)
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67 #define SWAP_LE32(x) (x)
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68 #define SWAP_LE64(x) (x)
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69 #endif
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71 // Some versions of gcc produce spurious "may be uninitialized" warnings in
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72 // cases where it provably can't happen. Unfortunately, although this warning
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73 // is calculated and produced separately from the "is definitely used
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74 // uninitialized" warnings, there's no way to turn off the broken spurious "may
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75 // be" warnings without also turning off the non-broken "is" warnings.
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76
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77 #if CFG_TOYBOX_DEBUG
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78 #define GCC_BUG =0
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79 #else
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80 #define GCC_BUG
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81 #endif
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83 #if defined(__APPLE__) || defined(__ANDROID__)
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84 ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream);
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85 ssize_t getline(char **lineptr, size_t *n, FILE *stream);
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86 #endif