build: allow linking against system libuv

configure

@@ -171,6 +171,26 @@ parser.add_option("--shared-cares-libname",
     dest="shared_cares_libname",
     help="Alternative lib name to link to (default: 'cares')")
 
+parser.add_option("--shared-libuv",
+    action="store_true",
+    dest="shared_libuv",
+    help="Link to a shared libuv DLL instead of static linking")
+
+parser.add_option("--shared-libuv-includes",
+    action="store",
+    dest="shared_libuv_includes",
+    help="Directory containing libuv header files")
+
+parser.add_option("--shared-libuv-libpath",
+    action="store",
+    dest="shared_libuv_libpath",
+    help="A directory to search for the shared libuv DLL")
+
+parser.add_option("--shared-libuv-libname",
+    action="store",
+    dest="shared_libuv_libname",
+    help="Alternative lib name to link to (default: 'uv')")
+
 parser.add_option("--with-dtrace",
     action="store_true",
     dest="with_dtrace",
@@ -495,6 +515,20 @@ def configure_cares(o):
         o['include_dirs'] += [options.shared_cares_includes]
 
 
+def configure_libuv(o):
+  o['variables']['node_shared_libuv'] = b(options.shared_libuv)
+
+  # assume shared libuv if one of these is set?
+  if options.shared_libuv_libpath:
+    o['libraries'] += ['-L%s' % options.shared_libuv_libpath]
+  if options.shared_libuv_libname:
+    o['libraries'] += ['-l%s' % options.shared_libuv_libname]
+  elif options.shared_libuv:
+    o['libraries'] += ['-luv']
+  if options.shared_libuv_includes:
+    o['include_dirs'] += [options.shared_libuv_includes]
+
+
 def configure_v8(o):
   o['variables']['v8_use_snapshot'] = b(not options.without_snapshot)
   o['variables']['node_shared_v8'] = b(options.shared_v8)
@@ -550,6 +584,7 @@ configure_node(output)
 configure_libz(output)
 configure_http_parser(output)
 configure_cares(output)
+configure_libuv(output)
 configure_v8(output)
 configure_openssl(output)
 

doc/api/process.markdown

@@ -301,6 +301,7 @@ An example of the possible output looks like:
          node_prefix: '',
          node_shared_cares: 'false',
          node_shared_http_parser: 'false',
+         node_shared_libuv: 'false',
          node_shared_v8: 'false',
          node_shared_zlib: 'false',
          node_use_dtrace: 'false',

node.gyp

@@ -10,6 +10,7 @@
     'node_shared_zlib%': 'false',
     'node_shared_http_parser%': 'false',
     'node_shared_cares%': 'false',
+    'node_shared_libuv%': 'false',
     'node_use_openssl%': 'true',
     'node_use_systemtap%': 'false',
     'node_shared_openssl%': 'false',
@@ -60,7 +61,6 @@
       'type': 'executable',
 
       'dependencies': [
-        'deps/uv/uv.gyp:libuv',
         'node_js2c#host',
       ],
 
@@ -209,6 +209,10 @@
           'dependencies': [ 'deps/cares/cares.gyp:cares' ],
         }],
 
+        [ 'node_shared_libuv=="false"', {
+          'dependencies': [ 'deps/uv/uv.gyp:libuv' ],
+        }],
+
         [ 'OS=="win"', {
           'sources': [
             'src/res/node.rc',