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| author | Nils Maier <maierman@web.de> | 2014-12-30 18:17:44 +0100 |
|---|---|---|
| committer | Nils Maier <maierman@web.de> | 2015-01-20 22:37:24 +0100 |
| commit | 81bdd5f61a8f8da53e22d68190be700902b7dbae (patch) | |
| tree | f706934a5e5e208d8d09490d216fe03f10b38654 /configure.ac | |
| parent | 747131a06c1f1d92a5312a103f4446fabedb6cf7 (diff) | |
Revise getRandom facilities
Use one of the following to provide random bytes:
- Windows CryptGenRandom
- Linux getrandom (syscall interface to urandom, without nasty corner
cases such as file descriptor exhaustion or re-linked /dev/urandom)
- std::device_random (C++ random device, which usually will be urandom)
This also equalizes util::getRandom and SimpleRandomizer (the former
will now use the latter) instead of having essentially two different
PRNG interfaces with potentially different quality.
Closes GH-320
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 18c8374b..41ca35df 100644 --- a/configure.ac +++ b/configure.ac @@ -720,6 +720,7 @@ AC_CHECK_FUNCS([__argz_count \ gethostbyname \ getifaddrs \ getpagesize \ + getrandom \ memchr \ memmove \ mempcpy \ @@ -755,6 +756,19 @@ AC_CHECK_FUNCS([__argz_count \ utime \ utimes]) +AC_MSG_CHECKING([for getrandom linux syscall interface]) +AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <linux/random.h> +]], +[[ +int x = GRND_NONBLOCK; +]])], + [have_getrandom_interface=yes + AC_DEFINE([HAVE_GETRANDOM_INTERFACE], [1], [Define to 1 if getrandom linux syscall interface is available.])], + [have_getrandom_interface=no]) +AC_MSG_RESULT([$have_getrandom_interface]) +AM_CONDITIONAL([HAVE_GETRANDOM_INTERFACE], [test "x$have_getrandom_interface" = "xyes"]) + dnl Put tcmalloc/jemalloc checks after the posix_memalign check. dnl These libraries may implement posix_memalign, while the usual CRT may not dnl (e.g. mingw). Since we aren't including the corresponding library headers |