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# random.m4
# serial 8
dnl Copyright (C) 2012-2024 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_RANDOM],
[
AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
AC_REQUIRE([AC_CANONICAL_HOST])
dnl We can't use AC_CHECK_FUNC here, because random() is defined as a
dnl static inline function when compiling for Android 4.4 or older.
AC_CACHE_CHECK([for random], [gl_cv_func_random],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <stdlib.h>]],
[[return random() == 0;]])
],
[gl_cv_func_random=yes],
[gl_cv_func_random=no])
])
gl_CHECK_FUNCS_ANDROID([initstate], [[#include <stdlib.h>]])
gl_CHECK_FUNCS_ANDROID([setstate], [[#include <stdlib.h>]])
if test $gl_cv_func_random = no; then
HAVE_RANDOM=0
HAVE_INITSTATE=0
HAVE_SETSTATE=0
else
if test $ac_cv_func_initstate = no; then
HAVE_INITSTATE=0
fi
if test $ac_cv_func_setstate = no; then
HAVE_SETSTATE=0
fi
fi
if test $HAVE_INITSTATE = 0; then
case "$gl_cv_onwards_func_initstate" in
future*) REPLACE_INITSTATE=1 ;;
esac
fi
if test $HAVE_SETSTATE = 0; then
case "$gl_cv_onwards_func_setstate" in
future*) REPLACE_SETSTATE=1 ;;
esac
fi
dnl On several platforms, random() is not multithread-safe.
if test $ac_cv_func_initstate = no || test $ac_cv_func_setstate = no \
|| case "$host_os" in \
darwin* | freebsd* | solaris* | cygwin* | haiku*) true ;; \
*) false ;; \
esac
then
dnl In order to define initstate or setstate, we need to define all the
dnl functions at once.
REPLACE_RANDOM=1
if test $ac_cv_func_initstate = yes; then
REPLACE_INITSTATE=1
fi
if test $ac_cv_func_setstate = yes; then
REPLACE_SETSTATE=1
fi
fi
AC_CHECK_DECLS_ONCE([initstate])
if test $ac_cv_have_decl_initstate = no; then
HAVE_DECL_INITSTATE=0
fi
AC_CHECK_DECLS_ONCE([setstate])
if test $ac_cv_have_decl_setstate = no; then
HAVE_DECL_SETSTATE=0
fi
])
# Prerequisites of lib/random.c.
AC_DEFUN([gl_PREREQ_RANDOM], [
:
])
|
