hcrypto: Check for arc4random

Add a configure test for the arc4random function which hcrypto can
use as an entropy source

Change-Id: If1ae243d2f2850be0efd0030a37ac026cdb0e7ba
Reviewed-on: http://gerrit.openafs.org/2597
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>

diff --git a/acinclude.m4 b/acinclude.m4
index 865e855..911aaec 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1243,6 +1243,7 @@ else
 fi
 AC_SUBST(BUILD_LOGIN)
 
+AC_CHECK_FUNCS(arc4random)
 AC_CHECK_FUNCS(snprintf strlcat strlcpy flock getrlimit)
 AC_CHECK_FUNCS(setprogname getprogname sigaction mkstemp vsnprintf strerror strcasestr)
 AC_CHECK_FUNCS(setvbuf vsyslog getcwd)