|
|
# getrandom.m4 serial 10 |
|
|
dnl Copyright 2020-2023 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. |
|
|
|
|
|
dnl Written by Paul Eggert. |
|
|
|
|
|
AC_DEFUN([gl_FUNC_GETRANDOM], |
|
|
[ |
|
|
AC_REQUIRE([gl_SYS_RANDOM_H_DEFAULTS]) |
|
|
gl_CHECK_FUNCS_ANDROID([getrandom], |
|
|
[[ |
|
|
|
|
|
#include <sys/types.h> |
|
|
#include <stdlib.h> |
|
|
#include <sys/random.h> |
|
|
]]) |
|
|
if test "$ac_cv_func_getrandom" != yes; then |
|
|
HAVE_GETRANDOM=0 |
|
|
else |
|
|
dnl On Solaris 11.4 the return type is 'int', not 'ssize_t'. |
|
|
AC_CACHE_CHECK([whether getrandom is compatible with its GNU+BSD signature], |
|
|
[gl_cv_func_getrandom_ok], |
|
|
[AC_COMPILE_IFELSE( |
|
|
[AC_LANG_PROGRAM( |
|
|
[[ |
|
|
|
|
|
#include <sys/types.h> |
|
|
#include <stdlib.h> |
|
|
#include <sys/random.h> |
|
|
ssize_t getrandom (void *, size_t, unsigned int); |
|
|
]], |
|
|
[[]]) |
|
|
], |
|
|
[gl_cv_func_getrandom_ok=yes], |
|
|
[gl_cv_func_getrandom_ok=no]) |
|
|
]) |
|
|
if test $gl_cv_func_getrandom_ok = no; then |
|
|
REPLACE_GETRANDOM=1 |
|
|
fi |
|
|
fi |
|
|
|
|
|
case "$host_os" in |
|
|
mingw*) |
|
|
AC_CHECK_HEADERS([bcrypt.h], [], [], |
|
|
[[#include <windows.h> |
|
|
]]) |
|
|
AC_CACHE_CHECK([whether the bcrypt library is guaranteed to be present], |
|
|
[gl_cv_lib_assume_bcrypt], |
|
|
[AC_COMPILE_IFELSE( |
|
|
[AC_LANG_PROGRAM( |
|
|
[[#include <windows.h>]], |
|
|
[[#if !(_WIN32_WINNT >= _WIN32_WINNT_WIN7) |
|
|
cannot assume it |
|
|
#endif |
|
|
]]) |
|
|
], |
|
|
[gl_cv_lib_assume_bcrypt=yes], |
|
|
[gl_cv_lib_assume_bcrypt=no]) |
|
|
]) |
|
|
if test $gl_cv_lib_assume_bcrypt = yes; then |
|
|
AC_DEFINE([HAVE_LIB_BCRYPT], [1], |
|
|
[Define to 1 if the bcrypt library is guaranteed to be present.]) |
|
|
GETRANDOM_LIB='-lbcrypt' |
|
|
else |
|
|
GETRANDOM_LIB='-ladvapi32' |
|
|
fi |
|
|
;; |
|
|
*) |
|
|
GETRANDOM_LIB= ;; |
|
|
esac |
|
|
AC_SUBST([GETRANDOM_LIB]) |
|
|
dnl For backward compatibility. |
|
|
LIB_GETRANDOM="$GETRANDOM_LIB" |
|
|
AC_SUBST([LIB_GETRANDOM]) |
|
|
]) |
|
|
|
