Define os_posix in gyp files to get new Unix platforms added quickly

base/base.gypi

 # Copyright (c) 2011 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 336 matching lines @@
           '..',
         ],
         # These warnings are needed for the files in third_party\dmg_fp.
         'msvs_disabled_warnings': [
           4244, 4554, 4018, 4102,
         ],
         'mac_framework_dirs': [
           '$(SDKROOT)/System/Library/Frameworks/ApplicationServices.framework/Frameworks',
         ],
         'conditions': [
-          [ 'OS != "linux" and OS != "freebsd" and OS != "openbsd" and OS != "solaris"', {
+          [ 'os_posix!=1', {
               'sources/': [
                 ['exclude', '^nix/'],
               ],
               'sources!': [
                 'atomicops_internals_x86_gcc.cc',
                 'message_pump_glib.cc',
                 'message_pump_glib_x.cc',
               ],
           }],
           [ 'OS != "linux"', {
@@ skipping 32 matching lines @@
               'event_recorder_stubs.cc',
               'file_descriptor_shuffle.cc',
               'message_pump_libevent.cc',
               # Not using sha1_win.cc because it may have caused a
               # regression to page cycler moz.
               'sha1_win.cc',
               'string16.cc',
               'debug/trace_event.cc',
             ],
           },],
-          ['OS=="freebsd" or OS=="openbsd"', {
+          ['os_posix==1 and OS!="linux"', {
             'sources!': [
-              'base/files/file_path_watcher_linux.cc',
+              'files/file_path_watcher_linux.cc',
             ],
             'sources': [
-              'base/files/file_path_watcher_stub.cc',
+              'files/file_path_watcher_stub.cc',
             ],
           }],
         ],
       }],
     ],
   },
   'targets': [
     {
       'target_name': 'base',
       'type': '<(component)',
@@ skipping 10 matching lines @@
         'third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
       ],
       # TODO(gregoryd): direct_dependent_settings should be shared with the
       #  64-bit target, but it doesn't work due to a bug in gyp
       'direct_dependent_settings': {
         'include_dirs': [
           '..',
         ],
       },
       'conditions': [
-        [ 'OS == "linux" or OS == "freebsd" or OS == "openbsd" or OS == "solaris"', {
+        [ 'os_posix==1', {
           'conditions': [
             [ 'chromeos==1', {
                 'sources/': [ ['include', '_chromeos\\.cc$'] ]
               },
             ],
             [ 'linux_use_tcmalloc==0', {
                 'defines': [
                   'NO_TCMALLOC',
                 ],
                 'direct_dependent_settings': {
@@ skipping 14 matching lines @@
           'defines': [
             'USE_SYMBOLIZE',
           ],
           'cflags': [
             '-Wno-write-strings',
           ],
           'export_dependent_settings': [
             '../build/linux/system.gyp:gtk',
             '../build/linux/system.gyp:x11',
           ],
-        }, {  # OS != "linux" and OS != "freebsd" and OS != "openbsd" and OS != "solaris"
+        }, {  # os_posix!=1
             'sources/': [
               ['exclude', '/xdg_user_dirs/'],
               ['exclude', '_nss\.cc$'],
             ],
         }],
         [ 'OS == "freebsd" or OS == "openbsd"', {
+          'sources!': [
+            'process_linux.cc',
+          ],
           'link_settings': {
             'libraries': [
               '-L/usr/local/lib -lexecinfo',
               ],
             },
           },
         ],
         [ 'OS == "linux"', {
           'link_settings': {
              'libraries': [
@@ skipping 123 matching lines @@
             'i18n/icu_util_nacl_win64.cc',
           ],
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
-    [ 'OS == "linux" or OS == "freebsd" or OS == "openbsd" or OS == "solaris"', {
+    [ 'os_posix==1', {
       'targets': [
         {
           'target_name': 'symbolize',
           'type': '<(library)',
           'variables': {
             'chromium_code': 0,
           },
           'conditions': [
             [ 'OS == "solaris"', {
               'include_dirs': [
@@ skipping 38 matching lines @@
             'third_party/xdg_mime/xdgmimemagic.c',
             'third_party/xdg_mime/xdgmimemagic.h',
             'third_party/xdg_mime/xdgmimeparent.c',
             'third_party/xdg_mime/xdgmimeparent.h',
           ],
         },
       ],
     }],
   ],
 }