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- # sys_random_h.m4 serial 5
- dnl Copyright (C) 2020-2021 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_HEADER_SYS_RANDOM],
- [
- AC_REQUIRE([gl_SYS_RANDOM_H_DEFAULTS])
- dnl <sys/random.h> is always overridden, because of GNULIB_POSIXCHECK.
- gl_CHECK_NEXT_HEADERS([sys/random.h])
- if test $ac_cv_header_sys_random_h = yes; then
- HAVE_SYS_RANDOM_H=1
- else
- HAVE_SYS_RANDOM_H=0
- fi
- AC_SUBST([HAVE_SYS_RANDOM_H])
- m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])])
- if test $ac_cv_header_sys_random_h = yes; then
- UNISTD_H_HAVE_SYS_RANDOM_H=1
- fi
- dnl Check for declarations of anything we want to poison if the
- dnl corresponding gnulib module is not in use.
- gl_WARN_ON_USE_PREPARE([[
- #if HAVE_SYS_RANDOM_H
- /* Additional includes are needed before <sys/random.h> on uClibc
- and Mac OS X. */
- # include <sys/types.h>
- # include <stdlib.h>
- # include <sys/random.h>
- #endif
- ]],
- [getrandom])
- ])
- AC_DEFUN([gl_SYS_RANDOM_MODULE_INDICATOR],
- [
- dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
- AC_REQUIRE([gl_SYS_RANDOM_H_DEFAULTS])
- gl_MODULE_INDICATOR_SET_VARIABLE([$1])
- dnl Define it also as a C macro, for the benefit of the unit tests.
- gl_MODULE_INDICATOR_FOR_TESTS([$1])
- ])
- AC_DEFUN([gl_SYS_RANDOM_H_DEFAULTS],
- [
- GNULIB_GETRANDOM=0; AC_SUBST([GNULIB_GETRANDOM])
- dnl Assume proper GNU behavior unless another module says otherwise.
- HAVE_GETRANDOM=1; AC_SUBST([HAVE_GETRANDOM])
- REPLACE_GETRANDOM=0; AC_SUBST([REPLACE_GETRANDOM])
- ])
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