1#serial 8 -*- autoconf -*-
2
3dnl From Jim Meyering.
4dnl
5dnl See if the glibc *_unlocked I/O macros or functions are available.
6dnl Use only those *_unlocked macros or functions that are declared
7dnl (because some of them were declared in Solaris 2.5.1 but were removed
8dnl in Solaris 2.6, whereas we want binaries built on Solaris 2.5.1 to run
9dnl on Solaris 2.6).
10
11AC_DEFUN([jm_FUNC_GLIBC_UNLOCKED_IO],
12[
13  dnl Persuade glibc and Solaris <stdio.h> to declare
14  dnl fgets_unlocked(), fputs_unlocked() etc.
15  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
16
17  AC_CHECK_DECLS_ONCE(
18     [clearerr_unlocked feof_unlocked ferror_unlocked
19      fflush_unlocked fgets_unlocked fputc_unlocked fputs_unlocked
20      fread_unlocked fwrite_unlocked getc_unlocked
21      getchar_unlocked putc_unlocked putchar_unlocked])
22])
23