|
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AC_DEFUN([CHECK_PROGNAME], [
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AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
|
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|
[[ extern char *__progname; printf("%s", __progname); ]])],
|
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[ ac_cv_libc_defines___progname="yes" ],
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[ ac_cv_libc_defines___progname="no"
|
|
|
])
|
|
|
])
|
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if test "x$ac_cv_libc_defines___progname" = "xyes" ; then
|
|
|
AC_DEFINE([HAVE___PROGNAME], [1], [Define if libc defines __progname])
|
|
|
fi
|
|
|
])
|
|
|
|
|
|
AC_DEFUN([CHECK_SYSCALL_COMPAT], [
|
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|
AC_CHECK_FUNCS([accept4 pipe2 pledge poll socketpair])
|
|
|
AM_CONDITIONAL([HAVE_ACCEPT4], [test "x$ac_cv_func_accept4" = xyes])
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AM_CONDITIONAL([HAVE_PIPE2], [test "x$ac_cv_func_pipe2" = xyes])
|
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|
AM_CONDITIONAL([HAVE_PLEDGE], [test "x$ac_cv_func_pledge" = xyes])
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|
AM_CONDITIONAL([HAVE_POLL], [test "x$ac_cv_func_poll" = xyes])
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|
AM_CONDITIONAL([HAVE_SOCKETPAIR], [test "x$ac_cv_func_socketpair" = xyes])
|
|
|
])
|
|
|
|
|
|
AC_DEFUN([CHECK_B64_NTOP], [
|
|
|
AC_SEARCH_LIBS([b64_ntop],[resolv])
|
|
|
AC_SEARCH_LIBS([__b64_ntop],[resolv])
|
|
|
AC_CACHE_CHECK([for b64_ntop], ac_cv_have_b64_ntop_arg, [
|
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
|
|
|
#include <sys/types.h>
|
|
|
#include <sys/socket.h>
|
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|
#include <netinet/in.h>
|
|
|
#include <arpa/inet.h>
|
|
|
#include <resolv.h>
|
|
|
]], [[ b64_ntop(NULL, 0, NULL, 0); ]])],
|
|
|
[ ac_cv_have_b64_ntop_arg="yes" ],
|
|
|
[ ac_cv_have_b64_ntop_arg="no"
|
|
|
])
|
|
|
])
|
|
|
AM_CONDITIONAL([HAVE_B64_NTOP], [test "x$ac_cv_func_b64_ntop_arg" = xyes])
|
|
|
])
|
|
|
|
|
|
AC_DEFUN([CHECK_CRYPTO_COMPAT], [
|
|
|
# Check crypto-related libc functions and syscalls
|
|
|
AC_CHECK_FUNCS([arc4random arc4random_buf arc4random_uniform])
|
|
|
AC_CHECK_FUNCS([explicit_bzero getauxval])
|
|
|
|
|
|
AC_CACHE_CHECK([for getentropy], ac_cv_func_getentropy, [
|
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
|
|
|
#include <sys/types.h>
|
|
|
#include <unistd.h>
|
|
|
|
|
|
/*
|
|
|
* Explanation:
|
|
|
*
|
|
|
* - iOS <= 10.1 fails because of missing sys/random.h
|
|
|
*
|
|
|
* - in macOS 10.12 getentropy is not tagged as introduced in
|
|
|
* 10.12 so we cannot use it for target < 10.12
|
|
|
*/
|
|
|
#ifdef __APPLE__
|
|
|
# include <AvailabilityMacros.h>
|
|
|
# include <TargetConditionals.h>
|
|
|
|
|
|
# if (TARGET_OS_IPHONE || TARGET_OS_SIMULATOR)
|
|
|
# include <sys/random.h> /* Not available as of iOS <= 10.1 */
|
|
|
# else
|
|
|
|
|
|
# include <sys/random.h> /* Pre 10.12 systems should die here */
|
|
|
|
|
|
/* Based on: https://gitweb.torproject.org/tor.git/commit/?id=16fcbd21 */
|
|
|
# ifndef MAC_OS_X_VERSION_10_12
|
|
|
# define MAC_OS_X_VERSION_10_12 101200 /* Robustness */
|
|
|
# endif
|
|
|
# if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
|
|
|
# if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
|
|
|
# error "Targeting on Mac OSX 10.11 or earlier"
|
|
|
# endif
|
|
|
# endif
|
|
|
|
|
|
# endif
|
|
|
#endif /* __APPLE__ */
|
|
|
]], [[
|
|
|
char buffer;
|
|
|
(void)getentropy(&buffer, sizeof (buffer));
|
|
|
]])],
|
|
|
[ ac_cv_func_getentropy="yes" ],
|
|
|
[ ac_cv_func_getentropy="no"
|
|
|
])
|
|
|
])
|
|
|
|
|
|
AC_CHECK_FUNCS([timingsafe_bcmp timingsafe_memcmp])
|
|
|
AM_CONDITIONAL([HAVE_ARC4RANDOM], [test "x$ac_cv_func_arc4random" = xyes])
|
|
|
AM_CONDITIONAL([HAVE_ARC4RANDOM_BUF], [test "x$ac_cv_func_arc4random_buf" = xyes])
|
|
|
AM_CONDITIONAL([HAVE_ARC4RANDOM_UNIFORM], [test "x$ac_cv_func_arc4random_uniform" = xyes])
|
|
|
AM_CONDITIONAL([HAVE_EXPLICIT_BZERO], [test "x$ac_cv_func_explicit_bzero" = xyes])
|
|
|
AM_CONDITIONAL([HAVE_GETENTROPY], [test "x$ac_cv_func_getentropy" = xyes])
|
|
|
AM_CONDITIONAL([HAVE_TIMINGSAFE_BCMP], [test "x$ac_cv_func_timingsafe_bcmp" = xyes])
|
|
|
AM_CONDITIONAL([HAVE_TIMINGSAFE_MEMCMP], [test "x$ac_cv_func_timingsafe_memcmp" = xyes])
|
|
|
|
|
|
# Override arc4random_buf implementations with known issues
|
|
|
AM_CONDITIONAL([HAVE_ARC4RANDOM_BUF],
|
|
|
[test "x$USE_BUILTIN_ARC4RANDOM" != xyes \
|
|
|
-a "x$ac_cv_func_arc4random_buf" = xyes])
|
|
|
|
|
|
# Check for getentropy fallback dependencies
|
|
|
AC_CHECK_FUNC([getauxval])
|
|
|
AC_SEARCH_LIBS([clock_gettime],[rt posix4])
|
|
|
AC_CHECK_FUNC([clock_gettime])
|
|
|
AC_SEARCH_LIBS([dl_iterate_phdr],[dl])
|
|
|
AC_CHECK_FUNC([dl_iterate_phdr])
|
|
|
])
|
|
|
|
|
|
AC_DEFUN([CHECK_VA_COPY], [
|
|
|
AC_CACHE_CHECK([whether va_copy exists], ac_cv_have_va_copy, [
|
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
|
|
|
#include <stdarg.h>
|
|
|
va_list x,y;
|
|
|
]], [[ va_copy(x,y); ]])],
|
|
|
[ ac_cv_have_va_copy="yes" ],
|
|
|
[ ac_cv_have_va_copy="no"
|
|
|
])
|
|
|
])
|
|
|
if test "x$ac_cv_have_va_copy" = "xyes" ; then
|
|
|
AC_DEFINE([HAVE_VA_COPY], [1], [Define if va_copy exists])
|
|
|
fi
|
|
|
|
|
|
AC_CACHE_CHECK([whether __va_copy exists], ac_cv_have___va_copy, [
|
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
|
|
|
#include <stdarg.h>
|
|
|
va_list x,y;
|
|
|
]], [[ __va_copy(x,y); ]])],
|
|
|
[ ac_cv_have___va_copy="yes" ], [ ac_cv_have___va_copy="no"
|
|
|
])
|
|
|
])
|
|
|
if test "x$ac_cv_have___va_copy" = "xyes" ; then
|
|
|
AC_DEFINE([HAVE___VA_COPY], [1], [Define if __va_copy exists])
|
|
|
fi
|
|
|
])
|