It works!

binding.cpp

@@ -6,13 +6,12 @@ using namespace v8;
 
 Handle<Value> Render(const Arguments& args) {
     HandleScope scope;
-
     struct sass_context* ctx = sass_new_context();
-
     String::AsciiValue  astr(args[0]); 
     char * cs = *astr;
 
     ctx->input_string = cs;
+    ctx->options.include_paths = 0;
     ctx->options.output_style = SASS_STYLE_NESTED;
 
     sass_compile(ctx);

libsass/Makefile

@@ -11,7 +11,7 @@ CPP_FILES = \
 	prelexer.cpp
 
 libsass: libsass_objs
-	ar rvs libsass.a \
+	ar rs libsass.a \
 			sass_interface.o \
 			context.o \
 			functions.o \

test.js

-var sass = require('./sass')
-sass.render('something')
\ No newline at end of file
+var sass = require('./sass');
+console.log(sass.render('#navbar {\
+  width: 80%;\
+  height: 23px; }\
+  #navbar ul {\
+    list-style-type: none; }\
+  #navbar li {\
+    float: left;\
+    a {\
+      font-weight: bold; }}'))
\ No newline at end of file

wscript

@@ -12,9 +12,12 @@ def set_options(opt):
 def configure(conf):
     conf.check_tool("compiler_cxx")
     conf.check_tool("node_addon")
+    conf.check(staticlib='sass',  uselib_store='LIB_SASS', cpppath='./libsass/')
 
 def build(bld):
     obj = bld.new_task_gen("cxx", "shlib", "node_addon")
     obj.uselib = "sass"
     obj.target = "binding"
     obj.source = "binding.cpp "
+    obj.use = ['LIB_SASS']
+    obj.add_obj_file("./libsass/libsass.a")