5 dnl See if the glibc *_unlocked I/O macros are available.
6 dnl Use only those *_unlocked macros that are declared.
9 AC_DEFUN(jm_FUNC_GLIBC_UNLOCKED_IO,
11 io_functions='clearerr_unlocked feof_unlocked ferror_unlocked
12 fflush_unlocked fputc_unlocked fread_unlocked fwrite_unlocked
13 getc_unlocked getchar_unlocked putc_unlocked putchar_unlocked'
14 for jm_io_func in $io_functions; do
15 # Check for the existence of each function only if its declared.
16 # Otherwise, we'd get the Solaris5.5.1 functions that are not
17 # declared, and that have been removed from Solaris5.6. The resulting
18 # 5.5.1 binaries would not run on 5.6 due to shared library differences.
19 jm_CHECK_DECLARATIONS([#include <stdio.h>
23 if test $jm_declared = yes; then
24 AC_CHECK_FUNCS($jm_io_func)