Added openssl recipe.

SConscript

@@ -127,7 +127,8 @@ def _deps_from_json(env: Environment, deps: dict) -> dict:
         if 'condition' in dep:
             if not _safe_eval(dep['condition'], {
                 'compiler_family': env['COMPILER_FAMILY'],
-                'target_os': os.name
+                'target_os': os.name,
+                'getenv': lambda name: env.get(name)
             }):
                 to_remove.append(key)
                 continue
@@ -341,7 +342,8 @@ def _build_target(target: _Target):
         for lib in libs_copy:
             if isinstance(lib, str) and os.path.isabs(lib):
                 target.kwargs['LIBS'].remove(lib)
-                target.kwargs['source'].append(env.Entry(lib))
+                target.kwargs['LIBS'].append(env.File(lib))
+                pass
             elif isinstance(lib, _Target):
                 if not lib.target:
                     _build_target(lib)