mirror of
git://git.sv.gnu.org/coreutils.git
synced 2026-02-25 08:35:53 +02:00
36 lines
1.2 KiB
Plaintext
36 lines
1.2 KiB
Plaintext
#serial 4
|
|
|
|
dnl From Jim Meyering.
|
|
dnl
|
|
dnl See if the glibc *_unlocked I/O macros are available.
|
|
dnl Use only those *_unlocked macros that are declared.
|
|
dnl
|
|
|
|
AC_DEFUN(jm_FUNC_GLIBC_UNLOCKED_IO,
|
|
[
|
|
# Kludge (not executed) to make autoheader do the right thing.
|
|
if test a = b; then
|
|
AC_CHECK_DECLS([clearerr_unlocked, feof_unlocked, ferror_unlocked,
|
|
fflush_unlocked, fputc_unlocked, fread_unlocked, fwrite_unlocked,
|
|
getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked])
|
|
fi
|
|
|
|
io_functions='clearerr_unlocked feof_unlocked ferror_unlocked
|
|
fflush_unlocked fputc_unlocked fread_unlocked fwrite_unlocked
|
|
getc_unlocked getchar_unlocked putc_unlocked putchar_unlocked'
|
|
for jm_io_func in $io_functions; do
|
|
# Check for the existence of each function only if its declared.
|
|
# Otherwise, we'd get the Solaris5.5.1 functions that are not
|
|
# declared, and that have been removed from Solaris5.6. The resulting
|
|
# 5.5.1 binaries would not run on 5.6 due to shared library differences.
|
|
AC_CHECK_DECLS([$jm_io_func],
|
|
jm_declared=yes,
|
|
jm_declared=no,
|
|
[#include <stdio.h>])
|
|
if test $jm_declared = yes; then
|
|
AC_CHECK_FUNCS($jm_io_func)
|
|
fi
|
|
done
|
|
]
|
|
)
|