Add gyp target to build preparser as stand-alone library.

tools/gyp/v8.gyp

Index: tools/gyp/v8.gyp
diff --git a/tools/gyp/v8.gyp b/tools/gyp/v8.gyp
index df8f5473a17924779ae55de4c40815bb51f891ee..39abd7ad8dd16601403fda1fea43f2d20b852ed9 100644
--- a/tools/gyp/v8.gyp
+++ b/tools/gyp/v8.gyp
@@ -30,6 +30,7 @@
     'msvs_use_common_release': 0,
     'gcc_version%': 'unknown',
     'v8_target_arch%': '<(target_arch)',
+    'host_arch%': '<(target_arch)',

[Søren Thygesen Gjesse, 2010/12/09 14:08:00]

I don't think we should set host_arch here it should have been supplied by the
consumer of v8.gyp. When used in Chromium this should all be set up.

[Lasse Reichstein, 2010/12/13 09:19:49]

Removed.

     'v8_use_snapshot%': 'true',
   },
   'target_defaults': {
@@ -196,6 +197,43 @@
       },
     },
     {
+      'target_name': 'v8-preparser',

[Søren Thygesen Gjesse, 2010/12/09 14:08:00]

- -> _, other targets use underscore.

[Lasse Reichstein, 2010/12/13 09:19:49]

Done.

+      'include_dirs': [
+        '../../include',
+        '../../src',
+      ],
+      'sources': [
+        '../../src/allocation.cc',
+        '../../src/hashmap.cc',
+        '../../src/preparse-data.cc',
+        '../../src/preparser.cc',
+        '../../src/preparser-api.cc',
+        '../../src/scanner-base.cc',
+        '../../src/token.cc',
+        '../../src/unicode.cc',
+      ],
+      'conditions': [
+        ['OS=="win" and component=="shared_library"', {
+          'sources': [ '../../src/v8preparserdll-main.cc' ],
+          'defines': [ 'BUILDING_V8_SHARED' ],
+          'direct_dependent_settings': {
+            'defines': [ 'USING_V8_SHARED' ]
+          },
+          'type': '<(component)',
+        }],
+        ['OS!="win"', {
+          'type': '<(library)'
+        }],
+        ['OS=="linux" and library=="shared_library"', {

[Søren Thygesen Gjesse, 2010/12/09 14:08:00]

I also think -fPIC should be provided by the consumer of v8.gyp. We don't set
-fPIC for any other targets in this file.

[Lasse Reichstein, 2010/12/13 09:19:49]

Done.

+           'cflags': ['-fPIC']
+        }],
+        ['v8_target_arch!="x64" and host_arch=="x64"', {

[Søren Thygesen Gjesse, 2010/12/09 14:08:00]

Does the preparser actually care about the v8_target_arch?

Also I think that the only case where v8_target_arch != target_arch makes sense
is when v8_target_arch is arm and target_arch is ia32 (independent of
host_arch).

[Lasse Reichstein, 2010/12/13 09:19:49]

Removed.

+          'cflags': ['-m32'],
+          'ldflags': ['-m32'],
+        }],
+      ]
+    },
+    {
       'target_name': 'v8_snapshot',
       'type': '<(library)',
       'conditions': [