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| 1 | #serial 7 -*- autoconf -*-
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| 2 |
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| 3 | dnl From Jim Meyering.
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| 4 | dnl
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| 5 | dnl See if the glibc *_unlocked I/O macros or functions are available.
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| 6 | dnl Use only those *_unlocked macros or functions that are declared
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| 7 | dnl (because some of them were declared in Solaris 2.5.1 but were removed
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| 8 | dnl in Solaris 2.6, whereas we want binaries built on Solaris 2.5.1 to run
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| 9 | dnl on Solaris 2.6).
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| 10 |
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| 11 | AC_DEFUN([jm_FUNC_GLIBC_UNLOCKED_IO],
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| 12 | [
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| 13 | dnl Persuade glibc <stdio.h> to declare fgets_unlocked(), fputs_unlocked()
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| 14 | dnl etc.
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| 15 | AC_REQUIRE([AC_GNU_SOURCE])
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| 16 |
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| 17 | AC_CHECK_DECLS_ONCE(
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| 18 | [clearerr_unlocked feof_unlocked ferror_unlocked
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| 19 | fflush_unlocked fgets_unlocked fputc_unlocked fputs_unlocked
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| 20 | fread_unlocked fwrite_unlocked getc_unlocked
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| 21 | getchar_unlocked putc_unlocked putchar_unlocked])
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| 22 | ])
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