fix ipv6 unused warning, add os check for crl monitor

configure.ac

@@ -612,7 +612,12 @@ AC_ARG_ENABLE(crl-monitor,
 
 if test "$ENABLED_CRL_MONITOR" = "yes"
 then
-    AM_CFLAGS="$AM_CFLAGS -DHAVE_CRL_MONITOR"
+    case $host_os in
+    *linux* | *darwin*)
+        AM_CFLAGS="$AM_CFLAGS -DHAVE_CRL_MONITOR" ;;
+    *)
+        AC_MSG_ERROR([crl monitor only allowed on linux or OS X]) ;;
+    esac
 fi
 
 AM_CONDITIONAL([BUILD_CRL_MONITOR], [test "x$ENABLED_CRL_MONITOR" = "xyes"])

cyassl/test.h

@@ -338,6 +338,7 @@ static INLINE void build_addr(SOCKADDR_IN_T* addr,
     else
         addr->sin_addr.s_addr = inet_addr(host);
 #else
+    (void)peer;
     addr->sin6_family = AF_INET_V;
     addr->sin6_port = htons(port);
     addr->sin6_addr = in6addr_loopback;

src/crl.c

@@ -397,7 +397,7 @@ static void* DoMonitor(void* arg)
 }
 
 
-#elif __linux__
+#elif defined(__linux__)
 
 #include <sys/types.h>
 #include <sys/inotify.h>
@@ -456,6 +456,9 @@ static void* DoMonitor(void* arg)
 }
 
 
+#else
+
+#error "CRL monitor only currently supported on linux or mach"
 
 #endif /* MACH or linux */
 

tests/unit.h

@@ -10,4 +10,5 @@ int SuiteTest(void);
 int HashTest(void);
 
 
-#endif /* CyaSSL_UNIT_H */
+#endif /* CyaSSL_UNIT_H */
+