Get skiaserve working on Windows.

gyp/microhttpd.gyp

 # Copyright 2016 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 {
   'variables': {
     'skia_warnings_as_errors': 0,
   },
   'targets': [{
     'target_name': 'microhttpd',
@@ skipping 162 matching lines @@
             'PACKAGE_STRING="libmicrohttpd 0.9.42"',
             'PACKAGE_TARNAME="libmicrohttpd"',
             'PACKAGE_URL=""',
             'PACKAGE_VERSION="0.9.42"',
             "SPDY_SUPPORT=0",
             "STDC_HEADERS=1",
             'VERSION="0.9.42"',
             '_MHD_EXTERN=__attribute__((visibility("default"))) extern',
         ],
       }],
+      ['skia_os == "win"', {
+        'sources': [
+            '../third_party/externals/microhttpd/src/platform/w32functions.c',
+        ],
+        'defines=': [             # equals sign throws away most Skia defines (just noise)
+            "_GNU_SOURCE=1",
+            "BAUTH_SUPPORT=1",
+            "DAUTH_SUPPORT=1",
+            "EPOLL_SUPPORT=0",
+            "HAVE_DECL_SOCK_NONBLOCK=0",
+            "HAVE_DECL_TCP_CORK=0",
+            "HAVE_DECL_TCP_NOPUSH=0",
+            "HAVE_ERRNO_H=1",
+            "HAVE_FCNTL_H=1",
+            "HAVE_INET6=1",
+            "HAVE_INTTYPES_H=1",
+            "HAVE_LIMITS_H=1",
+            "HAVE_LOCALE_H=1",
+            "HAVE_MATH_H=1",
+            "HAVE_MEMORY_H=1",
+            "HAVE_MESSAGES=1",
+#            "HAVE_POLL=0",

[Brian Osman, 2016/04/20 14:45:07]

The W32 version of MHD_Config.h that ships with the library includes
HAVE_POLL=1, but that causes a bunch of problems. Additionally, the code (in
daemon.c) uses an #ifdef, rather than #if, so we can't do HAVE_POLL=0. In any
case, the library/executable work without it.

+            "HAVE_POSTPROCESSOR=1",
+            "HAVE_PTHREAD_H=0",
+            "HAVE_STDINT_H=1",
+            "HAVE_STDIO_H=1",
+            "HAVE_STDLIB_H=1",
+            "HAVE_STRINGS_H=1",
+            "HAVE_STRING_H=1",
+            "HAVE_SYS_STAT_H=1",
+            "HAVE_SYS_TYPES_H=1",
+            "HAVE_TIME_H=1",
+            "HAVE_WINSOCK2_H=1",
+            "HAVE_WS2TCPIP_H=1",
+            "HTTPS_SUPPORT=0",
+            "MSVC=1",
+            "WINDOWS=1",
+            'LT_OBJDIR=".libs/"',
+            "MHD_DONT_USE_PIPES=1",
+            "MHD_USE_W32_THREADS=1",
+            'PACKAGE="libmicrohttpd"',
+            'PACKAGE_BUGREPORT="libmicrohttpd@gnu.org"',
+            'PACKAGE_NAME="libmicrohttp"',
+            'PACKAGE_STRING="libmicrohttpd 0.9.42"',
+            'PACKAGE_TARNAME="libmicrohttpd"',
+            'PACKAGE_URL=""',
+            'PACKAGE_VERSION="0.9.42"',
+            "SPDY_SUPPORT=0",
+            "STDC_HEADERS=1",
+            'VERSION="0.9.42"',
+            '_MHD_EXTERN=extern',
+        ],
+      }],
     ]
   }]
 }