Mercurial > ~mikael > mcabber > hg
view mcabber/macros/tm-gmtoff.m4 @ 1497:35020a2ed115
Do not use srand()/rand() if better alternatives exist (mirabilos)
arc4random(3) is a self-seeding PRNG available on a lot of OSes (all BSDs,
Darwin / Mac OSX, Interix / Microsoft® Services for Unix, Windows® 2003SR1,
Windows® Vista, Debian with the new libbsd package installed, ???) and much
better than srand(3)/rand(3).
Thanks to GNU autoconf, this can be made portable.
http://www.mirbsd.org/man/arc4random.3
//mirabilos
author | Mikael Berthe <mikael@lilotux.net> |
---|---|
date | Mon, 30 Jun 2008 23:13:50 +0200 |
parents | 103764a87777 |
children |
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dnl Check for the tm_gmtoff field in struct tm dnl (Borrowed from the Gaim project) AC_DEFUN([MC_TM_GMTOFF], [AC_REQUIRE([AC_STRUCT_TM])dnl AC_CACHE_CHECK([for tm_gmtoff in struct tm], ac_cv_struct_tm_gmtoff, [AC_TRY_COMPILE([#include <sys/types.h> #include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_gmtoff;], ac_cv_struct_tm_gmtoff=yes, ac_cv_struct_tm_gmtoff=no)]) if test "$ac_cv_struct_tm_gmtoff" = yes; then AC_DEFINE(HAVE_TM_GMTOFF, 1, [tm_gmtoff is available.]) fi ])