Last gyp patch for cross-platform Unix support

third_party/mesa/mesa.gyp

 # Copyright (c) 2010 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': {
   },
   'target_defaults': {
     'conditions': [
       ['OS!="win"', {
         'defines': [
           # For talloc
           'HAVE_VA_COPY',
         ],
       }],
       ['OS!="mac"', {
         'defines': [
           # For talloc
           'HAVE_STRNLEN',
         ],
       }],
-      ['OS=="linux"', {
+      ['os_posix == 1 and OS != "mac"', {
         'cflags': [
           '-fPIC',
         ],
       }],
     ],
     'defines': [
       # For Mesa
       'MAPI_GLAPI_CURRENT',
     ],
   },
@@ skipping 512 matching lines @@
         'MesaLib/src/mesa/drivers/common/driverfuncs.c',
         'MesaLib/src/mesa/drivers/common/driverfuncs.h',
         'MesaLib/src/mesa/drivers/common/meta.c',
         'MesaLib/src/mesa/drivers/common/meta.h',
         'MesaLib/src/mesa/drivers/osmesa/osmesa.c',
         'MesaLib/src/mesa/drivers/osmesa/osmesa.def',
       ],
     },
   ],
 }