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 # Kludge (not executed) to make autoheader do the right thing.
13 AC_CHECK_DECLS([clearerr_unlocked, feof_unlocked, ferror_unlocked,
14 fflush_unlocked, fputc_unlocked, fread_unlocked, fwrite_unlocked,
15 getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked])
17 io_functions='clearerr_unlocked feof_unlocked ferror_unlocked
18 fflush_unlocked fputc_unlocked fread_unlocked fwrite_unlocked
19 getc_unlocked getchar_unlocked putc_unlocked putchar_unlocked'
20 for jm_io_func in $io_functions; do
21 # Check for the existence of each function only if its declared.
22 # Otherwise, we'd get the Solaris5.5.1 functions that are not
23 # declared, and that have been removed from Solaris5.6. The resulting
24 # 5.5.1 binaries would not run on 5.6 due to shared library differences.
25 AC_CHECK_DECLS([$jm_io_func],
29 if test $jm_declared = yes; then
30 AC_CHECK_FUNCS($jm_io_func)