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# pselect.m4
dnl Copyright (C) 2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_PSELECT],
[
AC_REQUIRE([gl_HEADER_SYS_SELECT])
AC_REQUIRE([AC_C_RESTRICT])
AC_CHECK_FUNCS_ONCE([pselect])
if test $ac_cv_func_pselect = yes; then
AC_CACHE_CHECK([whether signature of pselect conforms to POSIX],
gl_cv_sig_pselect,
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <sys/select.h>
]],
[[int (*p) (int, fd_set *, fd_set *, fd_set *restrict,
struct timespec const *restrict,
sigset_t const *restrict) = pselect;
return !p;]])],
[gl_cv_sig_pselect=yes],
[gl_cv_sig_pselect=no])])
fi
if test $ac_cv_func_pselect = no || test $gl_cv_sig_pselect = no; then
REPLACE_PSELECT=1
fi
])
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