Completely nop-ing out DEF_WEAK leaves an empty statemment which some
compilers don't like. Replace with a no-op function template. ok djm@
/*
* We want functions in openbsd-compat, if enabled, to override system ones.
* We no-op out the weak symbol definition rather than remove it to reduce
- * future sync problems.
+ * future sync problems. Some compilers (eg Unixware) do not allow an
+ * empty statement, so we use a bogus function declaration.
*/
-#define DEF_WEAK(x)
+#define DEF_WEAK(x) void __ssh_compat_weak_##x(void)
/*
* Platforms that have arc4random_uniform() and not arc4random_stir()