old_contents: {
    'targets': [
      {
        'target_name': 'coredumper',
        'library': 'static_library',
        'type': 'static_library',
        'cflags': [ '-fPIC' ],
        'sources': [
          'src/coredumper.c',
          'src/coredumper.h',
          'src/thread_lister.c',
          'src/thread_lister.h',
          'src/elfcore.c',
          'src/elfcore.h',
          'src/linuxthreads.c',
          'src/linuxthreads.h',
  	'src/linux_syscall_support.h',
  	'src/google/coredumper.h',
        ],
        'link_settings': {
          'libraries': [
          ],
        },
      },
    ],
  }
  
new_contents: {
    'targets': [
      {
        'target_name': 'coredumper',
        'library': 'static_library',
        'type': 'static_library',
        'cflags': [ '-fPIC' ],
        'defines': [ '_GNU_SOURCE', ],
        'sources': [
          'src/coredumper.c',
          'src/coredumper.h',
          'src/thread_lister.c',
          'src/thread_lister.h',
          'src/elfcore.c',
          'src/elfcore.h',
          'src/linuxthreads.c',
          'src/linuxthreads.h',
  	'src/linux_syscall_support.h',
  	'src/google/coredumper.h',
        ],
        'link_settings': {
          'libraries': [
          ],
        },
      },
    ],
  }
  
subject: define _GNU_SOURCE