old_contents: # -*- coding: utf-8 -*-
  
  cflags = [
      '-std=c99',
      '-Wall',
      '-g0',
      '-O3',
  #    '-fno-strict-aliasing',
      '-D_GNU_SOURCE',
      ]
  
  libs = [
      'pthread',
      'ev',
      'json',
      ]
  
  includes = [
      'ext',
      ]
  
  headers = [
      'stdint.h',
      'stdbool.h',
      'unistd.h',
      'sys/stat.h',
      'sys/types.h',
      'sys/socket.h',
      'sys/un.h',
      'sys/ioctl.h',
      'arpa/inet.h',
      'netinet/in.h',
      'netdb.h',
      'signal.h',
      'errno.h',
      'pthread.h',
      ]
  
  funcs = [
      'sigaction',
      'sigignore',
      ]
  
new_contents: # -*- coding: utf-8 -*-
  
  cflags = [
      '-std=c99',
      '-Wall',
      '-g0',
      '-O3',
  #    '-fno-strict-aliasing',
      '-D_GNU_SOURCE',
      ]
  
  libs = [
      'pthread',
      'ev',
      'json',
      ]
  
  includes = [
      'ext',
      ]
  
  headers = [
      'stdint.h',
      'stdbool.h',
      'unistd.h',
      'sys/stat.h',
      'sys/types.h',
      'sys/socket.h',
      'sys/un.h',
      'sys/ioctl.h',
      'arpa/inet.h',
      'netinet/in.h',
      'netdb.h',
      'signal.h',
      'errno.h',
      'pthread.h',
      'ev.h',
      ]
  
  funcs = [
      'sigaction',
      'sigignore',
      ]
  
subject: add checking header 'ev.h'