1 | /* This file is only used if enabled in the build system, in which case it is
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2 | * included automatically via command line options. It is not included
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3 | * explicitly by any source files or other headers. Its purpose is to
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4 | * override default visibilities to reduce the size and performance costs
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5 | * of position-independent code. */
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6 |
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7 | #if !defined(CRT) && !defined(__ASSEMBLER__)
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8 |
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9 | /* Conceptually, all symbols should be protected, but some toolchains
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10 | * fail to support copy relocations for protected data, so exclude all
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11 | * exported data symbols. */
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12 |
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13 | __attribute__((__visibility__("default")))
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14 | extern struct _IO_FILE *const stdin, *const stdout, *const stderr;
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15 |
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16 | __attribute__((__visibility__("default")))
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17 | extern int optind, opterr, optopt, optreset, __optreset, getdate_err, h_errno, daylight, __daylight, signgam, __signgam;
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18 |
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19 | __attribute__((__visibility__("default")))
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20 | extern long timezone, __timezone;
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21 |
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22 | __attribute__((__visibility__("default")))
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23 | extern char *optarg, **environ, **__environ, *tzname[2], *__tzname[2], *__progname, *__progname_full;
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24 |
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25 | #pragma GCC visibility push(protected)
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26 |
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27 | #endif
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