contrib/src/gen-meson-crossfile.py

   1 #!/usr/bin/env python3
   2 import os
   3 import argparse
   4 import shlex
   5
   6 # Argument parsing
   7 parser = argparse.ArgumentParser(
   8     description="Generate a meson crossfile based on environment variables")
   9 parser.add_argument('file', type=argparse.FileType('w', encoding='UTF-8'),
  10     help="output file")
  11 args = parser.parse_args()
  12
  13 # Helper to add env variable value to crossfile
  14 def _add_environ_val(meson_key, env_key):
  15     env_value = os.environ.get(env_key, '')
  16     args.file.write("{} = '{}'\n".format(meson_key, env_value))
  17
  18 # Helper to add env variable array to crossfile
  19 def _add_environ_arr(meson_key, env_key):
  20     env_values = shlex.split(os.environ.get(env_key, ''))
  21     arr_string = (', '.join("'" + item + "'" for item in env_values))
  22     args.file.write("{} = [{}]\n".format(meson_key, arr_string))
  23
  24 # Generate meson crossfile
  25 args.file.write("# Automatically generated by contrib makefile\n")
  26
  27 # Binaries section
  28 args.file.write("\n[binaries]\n")
  29 _add_environ_val('c', 'CC')
  30 _add_environ_val('cpp', 'CXX')
  31 _add_environ_val('ar', 'AR')
  32 _add_environ_val('strip', 'STRIP')
  33 _add_environ_val('pkgconfig', 'PKG_CONFIG')
  34 _add_environ_val('windres', 'WINDRES')
  35
  36 # Properties section
  37 args.file.write("\n[properties]\n")
  38 args.file.write("needs_exe_wrapper = true\n")
  39 _add_environ_arr('c_args', 'CFLAGS')
  40 _add_environ_arr('c_link_args', 'LDFLAGS')
  41 _add_environ_arr('cpp_args', 'CXXFLAGS')
  42 _add_environ_arr('cpp_link_args', 'LDFLAGS')
  43
  44 # Host machine section
  45 args.file.write("\n[host_machine]\n")
  46 _add_environ_val('system', 'HOST_SYSTEM')
  47 _add_environ_val('cpu_family', 'HOST_ARCH')
  48 args.file.write("endian = 'little'\n")
  49
  50 # Get first part of triplet
  51 cpu = os.environ.get('HOST', '').split('-')[0]
  52 args.file.write("cpu = '{}'\n".format(cpu))