Linux: Dynamically load libudev.

build/linux/system.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'conditions': [
       ['sysroot!=""', {
         'pkg-config': '<(chroot_cmd) ./pkg-config-wrapper "<(sysroot)" "<(target_arch)" "<(system_libdir)"',
       }, {
         'pkg-config': 'pkg-config',
       }],
     ],
 
     # If any of the linux_link_FOO below are set to 1, then the corresponding
     # target will be linked against the FOO library (either dynamically or
     # statically, depending on the pkg-config files), as opposed to loading the
     # FOO library dynamically with dlopen.
     'linux_link_libgps%': 0,
     'linux_link_libpci%': 0,
     'linux_link_libspeechd%': 0,
     'linux_link_libbrlapi%': 0,
+
+    # Used below for the various libraries. In this scope for sharing with GN.
+    'libbrlapi_functions': [
+      'brlapi_getHandleSize',
+      'brlapi_error_location',
+      'brlapi_strerror',
+      'brlapi__acceptKeys',
+      'brlapi__openConnection',
+      'brlapi__closeConnection',
+      'brlapi__getDisplaySize',
+      'brlapi__enterTtyModeWithPath',
+      'brlapi__leaveTtyMode',
+      'brlapi__writeDots',
+      'brlapi__readKey',
+    ],
+    'libgio_functions': [
+      'g_settings_new',
+      'g_settings_get_child',
+      'g_settings_get_string',
+      'g_settings_get_boolean',
+      'g_settings_get_int',
+      'g_settings_get_strv',
+      'g_settings_list_schemas',
+    ],
+    'libpci_functions': [
+      'pci_alloc',
+      'pci_init',
+      'pci_cleanup',
+      'pci_scan_bus',
+      'pci_fill_info',
+      'pci_lookup_name',
+    ],
+    'libudev_functions': [
+      'udev_device_get_action',
+      'udev_device_get_devnode',
+      'udev_device_get_parent',
+      'udev_device_get_parent_with_subsystem_devtype',
+      'udev_device_get_property_value',
+      'udev_device_get_subsystem',
+      'udev_device_get_sysattr_value',
+      'udev_device_get_sysname',
+      'udev_device_get_syspath',
+      'udev_device_new_from_devnum',
+      'udev_device_new_from_syspath',
+      'udev_device_unref',
+      'udev_enumerate_add_match_subsystem',
+      'udev_enumerate_get_list_entry',
+      'udev_enumerate_new',
+      'udev_enumerate_scan_devices',
+      'udev_enumerate_unref',
+      'udev_list_entry_get_next',
+      'udev_list_entry_get_name',
+      'udev_monitor_enable_receiving',
+      'udev_monitor_filter_add_match_subsystem_devtype',
+      'udev_monitor_get_fd',
+      'udev_monitor_new_from_netlink',
+      'udev_monitor_receive_device',
+      'udev_monitor_unref',
+      'udev_new',
+      'udev_set_log_fn',
+      'udev_set_log_priority',
+      'udev_unref',
+    ],
   },
   'conditions': [
     [ 'chromeos==0 and use_ozone==0', {
       # Hide GTK and related dependencies for Chrome OS and Ozone, so they won't get
       # added back to Chrome OS and Ozone. Don't try to use GTK on Chrome OS and Ozone.
       'targets': [
         {
           'target_name': 'gdk',
           'type': 'none',
           'conditions': [
@@ skipping 405 matching lines @@
               '<!@(<(pkg-config) --libs-only-l libdrm)',
             ],
           },
         },
       ],
     }],
     ['use_udev==1', {
       'targets': [
         {
           'target_name': 'udev',
-          'type': 'none',
+          'type': 'static_library',
           'conditions': [
             ['_toolset=="target"', {
-              'direct_dependent_settings': {
-                'cflags': [
-                  '<!@(<(pkg-config) --cflags libudev)'
-                ],
-              },
-              'link_settings': {
-                'ldflags': [
-                  '<!@(<(pkg-config) --libs-only-L --libs-only-other libudev)',
-                ],
-                'libraries': [
-                  '<!@(<(pkg-config) --libs-only-l libudev)',
-                ],
-              },
+              'include_dirs': [
+                '../..',
+              ],
+              'hard_dependency': 1,
+              'actions': [
+                {
+                  'variables': {
+                    'output_h': '<(SHARED_INTERMEDIATE_DIR)/library_loaders/libudev0.h',
+                    'output_cc': '<(INTERMEDIATE_DIR)/libudev0_loader.cc',
+                    'generator': '../../tools/generate_library_loader/generate_library_loader.py',
+                  },
+                  'action_name': 'generate_libudev0_loader',
+                  'inputs': [
+                    '<(generator)',
+                  ],
+                  'outputs': [
+                    '<(output_h)',
+                    '<(output_cc)',
+                  ],
+                  'action': ['python',
+                             '<(generator)',
+                             '--name', 'LibUdev0Loader',
+                             '--output-h', '<(output_h)',
+                             '--output-cc', '<(output_cc)',
+                             '--header', '"third_party/libudev/libudev0.h"',
+                             '--link-directly=0',
+                             '<@(libudev_functions)',
+                  ],
+                  'message': 'Generating libudev0 library loader',
+                  'process_outputs_as_sources': 1,
+                },
+                {
+                  'variables': {
+                    'output_h': '<(SHARED_INTERMEDIATE_DIR)/library_loaders/libudev1.h',
+                    'output_cc': '<(INTERMEDIATE_DIR)/libudev1_loader.cc',
+                    'generator': '../../tools/generate_library_loader/generate_library_loader.py',
+                  },
+                  'action_name': 'generate_libudev1_loader',
+                  'inputs': [
+                    '<(generator)',
+                  ],
+                  'outputs': [
+                    '<(output_h)',
+                    '<(output_cc)',
+                  ],
+                  'action': ['python',
+                             '<(generator)',
+                             '--name', 'LibUdev1Loader',
+                             '--output-h', '<(output_h)',
+                             '--output-cc', '<(output_cc)',
+                             '--header', '"third_party/libudev/libudev1.h"',
+                             '--link-directly=0',
+                             '<@(libudev_functions)',
+                  ],
+                  'message': 'Generating libudev1 library loader',
+                  'process_outputs_as_sources': 1,
+                },
+              ],
             }],
           ],
         },
       ],
     }],
     ['use_libpci==1', {
       'targets': [
         {
           'target_name': 'libpci',
           'type': 'static_library',
@@ skipping 39 matching lines @@
               'action': ['python',
                          '<(generator)',
                          '--name', 'LibPciLoader',
                          '--output-h', '<(output_h)',
                          '--output-cc', '<(output_cc)',
                          '--header', '<pci/pci.h>',
                          # TODO(phajdan.jr): Report problem to pciutils project
                          # and get it fixed so that we don't need --use-extern-c.
                          '--use-extern-c',
                          '--link-directly=<(linux_link_libpci)',
-                         'pci_alloc',
-                         'pci_init',
-                         'pci_cleanup',
-                         'pci_scan_bus',
-                         'pci_fill_info',
-                         'pci_lookup_name',
+                         '<@(libpci_functions)',
               ],
               'message': 'Generating libpci library loader',
               'process_outputs_as_sources': 1,
             },
           ],
         },
       ],
     }],
   ],  # conditions
   'targets': [
@@ skipping 160 matching lines @@
                 '<(output_h)',
                 '<(output_cc)',
               ],
               'action': ['python',
                          '<(generator)',
                          '--name', 'LibGioLoader',
                          '--output-h', '<(output_h)',
                          '--output-cc', '<(output_cc)',
                          '--header', '<gio/gio.h>',
                          '--link-directly=<(linux_link_gsettings)',
-                         'g_settings_new',
-                         'g_settings_get_child',
-                         'g_settings_get_string',
-                         'g_settings_get_boolean',
-                         'g_settings_get_int',
-                         'g_settings_get_strv',
-                         'g_settings_list_schemas',
+                         '<@(libgio_functions)',
               ],
               'message': 'Generating libgio library loader',
               'process_outputs_as_sources': 1,
             },
           ],
         }],
       ],
     },
     {
       'target_name': 'glib',
@@ skipping 149 matching lines @@
             '<(output_h)',
             '<(output_cc)',
           ],
           'action': ['python',
                      '<(generator)',
                      '--name', 'LibBrlapiLoader',
                      '--output-h', '<(output_h)',
                      '--output-cc', '<(output_cc)',
                      '--header', '<brlapi.h>',
                      '--link-directly=<(linux_link_libbrlapi)',
-                     'brlapi_getHandleSize',
-                     'brlapi_error_location',
-                     'brlapi_strerror',
-                     'brlapi__acceptKeys',
-                     'brlapi__openConnection',
-                     'brlapi__closeConnection',
-                     'brlapi__getDisplaySize',
-                     'brlapi__enterTtyModeWithPath',
-                     'brlapi__leaveTtyMode',
-                     'brlapi__writeDots',
-                     'brlapi__readKey',
+                     '<@(libbrlapi_functions)',
           ],
           'message': 'Generating libbrlapi library loader',
           'process_outputs_as_sources': 1,
         },
       ],
     },
     {
       'target_name': 'libcap',
       'type': 'none',
       'link_settings': {
@@ skipping 169 matching lines @@
                   '-Wno-header-guard',
                 ],
               },
             }],
           ]
         }],
       ],
     },
   ],
 }