First cut for a FreeBSD port - much still not working

third_party/ffmpeg/ffmpeg.gyp

 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'includes': [
     '../../build/common.gypi',
   ],
   'target_defaults': {
     'conditions': [
-      ['OS!="linux"', {'sources/': [['exclude', '/linux/']]}],
+      ['OS!="linux" and OS!="freebsd"', {'sources/': [['exclude', '/linux/']]}],
       ['OS!="mac"', {'sources/': [['exclude', '/mac/']]}],
       ['OS!="win"', {'sources/': [['exclude', '/win/']]}],
     ],
   },
   'variables': {
     # Allow overridding the selection of which ffmpeg binaries to copy via an
     # environment variable.  Affects the ffmpeg_binaries target.
     'ffmpeg_branding%': '<(branding)',
 
     'use_system_ffmpeg%': 0,
@@ skipping 172 matching lines @@
       'conditions': [
         ['OS=="win"', {
           'variables': {
             'source_files': [
               'binaries/<(branding_dir)/avcodec-52.dll',
               'binaries/<(branding_dir)/avformat-52.dll',
               'binaries/<(branding_dir)/avutil-50.dll',
             ],
           },
           'dependencies': ['../../build/win/system.gyp:cygwin'],
-        }], ['OS=="linux"', {
+        }], ['OS=="linux" or OS=="freebsd"', {
           'conditions': [
             ['use_system_ffmpeg==0', {
               'variables': {
                 'source_files': [
                   'binaries/<(branding_dir)/libavcodec.so.52',
                   'binaries/<(branding_dir)/libavformat.so.52',
                   'binaries/<(branding_dir)/libavutil.so.50',
                 ],
               },
             }, {
@@ skipping 16 matching lines @@
         {
           'destination': '<(PRODUCT_DIR)/',
           'files': [
             '<@(source_files)',
           ]
         },
       ],
     },
   ],
 }