Add support for startup data (snapshot) compression.

tools/gyp/v8.gyp

 # Copyright 2011 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 12 matching lines @@
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 {
   'variables': {
     'use_system_v8%': 0,
     'msvs_use_common_release': 0,
     'gcc_version%': 'unknown',
+    'v8_compress_startup_data%': 'false',
     'v8_target_arch%': '<(target_arch)',
     'v8_use_snapshot%': 'true',
     'v8_use_liveobjectlist%': 'false',
   },
   'conditions': [
     ['use_system_v8==0', {
       'target_defaults': {
         'defines': [
           'ENABLE_LOGGING_AND_PROFILING',
           'ENABLE_DEBUGGER_SUPPORT',
@@ skipping 26 matching lines @@
             ],
           }],
           ['v8_use_liveobjectlist=="true"', {
             'defines': [
               'ENABLE_DEBUGGER_SUPPORT',
               'INSPECTOR',
               'OBJECT_PRINT',
               'LIVEOBJECTLIST',
             ],
           }],
+         ['v8_compress_startup_data=="bz2"', {
+            'defines': [
+              'COMPRESS_STARTUP_DATA_BZ2',
+            ],
+          }],
         ],
         'configurations': {
           'Debug': {
             'defines': [
               'DEBUG',
               '_DEBUG',
               'ENABLE_DISASSEMBLER',
               'V8_ENABLE_CHECKS',
               'OBJECT_PRINT',
             ],
@@ skipping 555 matching lines @@
                 '../../src/x64/regexp-macro-assembler-x64.cc',
                 '../../src/x64/regexp-macro-assembler-x64.h',
                 '../../src/x64/stub-cache-x64.cc',
               ],
             }],
             ['OS=="linux"', {
                 'link_settings': {
                   'libraries': [
                     # Needed for clock_gettime() used by src/platform-linux.cc.
                     '-lrt',
-                ]},
+                  ],
+                  'conditions': [
+                    ['v8_compress_startup_data=="bz2"', {
+                      'libraries': [
+                        '-lbz2',
+                    ]}],
+                  ],
+                },
                 'sources': [
                   '../../src/platform-linux.cc',
                   '../../src/platform-posix.cc'
                 ],
               }
             ],
             ['OS=="freebsd"', {
                 'link_settings': {
                   'libraries': [
                     '-L/usr/local/lib -lexecinfo',
@@ skipping 113 matching lines @@
           ],
           'sources': [
             '../../src/mksnapshot.cc',
           ],
           'conditions': [
             # The ARM assembler assumes the host is 32 bits, so force building
             # 32-bit host tools.
             ['v8_target_arch=="arm" and host_arch=="x64" and _toolset=="host"', {
               'cflags': ['-m32'],
               'ldflags': ['-m32'],
-            }]
+            }],
+            ['v8_compress_startup_data=="bz2"', {
+              'libraries': [
+                '-lbz2',
+              ]}],
           ]
         },
         {
           'target_name': 'v8_shell',
           'type': 'executable',
           'dependencies': [
             'v8'
           ],
           'sources': [
             '../../samples/shell.cc',
           ],
           'conditions': [
             ['OS=="win"', {
               # This could be gotten by not setting chromium_code, if that's OK.
               'defines': ['_CRT_SECURE_NO_WARNINGS'],
             }],
+            ['v8_compress_startup_data=="bz2"', {
+              'libraries': [
+                '-lbz2',
+              ]}],
           ],
         },
       ],
     }, { # use_system_v8 != 0
       'targets': [
         {
           'target_name': 'v8',
           'type': 'settings',
           'link_settings': {
             'libraries': [
               '-lv8',
             ],
           },
         },
         {
           'target_name': 'v8_shell',
           'type': 'none',
           'dependencies': [
             'v8'
           ],
         },
       ],
     }],
   ],
 }