Use pkg-config in wscript, create symlink on build

.gitignore

@@ -3,3 +3,4 @@ README.html
 test.db
 .lock-wscript
 speedtest.db
+sqlite3_bindings.node

sqlite3_bindings.node

-build/default/sqlite3_bindings.node
\ No newline at end of file

wscript

+import Options
+from os import unlink, symlink
+from os.path import exists
+
+
 srcdir = "."
 blddir = "build"
 VERSION = "0.0.1"
@@ -8,10 +13,24 @@ def set_options(opt):
 def configure(conf):
   conf.check_tool("compiler_cxx")
   conf.check_tool("node_addon")
+  if not conf.check_cfg(package='sqlite3', args='--cflags --libs', uselib_store='SQLITE3'):
+    conf.fatal('Missing sqlite3');
 
 def build(bld):
   obj = bld.new_task_gen("cxx", "shlib", "node_addon")
   obj.cxxflags = "-g"
   obj.target = "sqlite3_bindings"
   obj.source = "sqlite3_bindings.cc"
-  obj.lib = "sqlite3"
+  #obj.lib = "sqlite3"
+  obj.uselib ="SQLITE3"
+
+t = 'sqlite3_bindings.node'
+def shutdown():
+  # HACK to get binding.node out of build directory.
+  # better way to do this?
+  if Options.commands['clean']:
+    if exists(t): unlink(t)
+  else:
+    if exists('build/default/' + t) and not exists(t):
+      symlink('build/default/' + t, t)
+