Function create_ninja_file

tools/system_libs.py:193–292

(input_files, filename, libname, cflags, asflags=None, customize_build_flags=None)

def create_ninja_file(input_files, filename, libname, cflags, asflags=None, customize_build_flags=None):
  if asflags is None:
    asflags = []

  join_cmd = shlex.join if os.name == 'posix' else subprocess.list2cmdline

  out = f'''\
# Automatically generated by tools/system_libs.py.  DO NOT EDIT

ninja_required_version = 1.5

ASFLAGS = {join_cmd(asflags)}
CFLAGS = {join_cmd(cflags)}
EMCC = {shared.EMCC}
EMXX = {shared.EMXX}
EMAR = {shared.EMAR}

rule cc
  depfile = $out.d
  command = $EMCC -MD -MF $out.d $CFLAGS -c $in -o $out
  description = CC $out

rule cxx
  depfile = $out.d
  command = $EMXX -MD -MF $out.d $CFLAGS -c $in -o $out
  description = CXX $out

rule asm
  command = $EMCC $ASFLAGS -c $in -o $out
  description = ASM $out

rule asm_cpp
  depfile = $out.d
  command = $EMCC -MD -MF $out.d $CFLAGS -c $in -o $out
  description = ASM $out

rule direct_cc
  depfile = $with_depfile
  command = $EMCC -MD -MF $with_depfile $CFLAGS -c $in -o $out
  description = CC $out

rule archive
  # Workaround command line too long issue (https://github.com/ninja-build/ninja/pull/217) by using a response file.
  rspfile = $out.rsp
  rspfile_content = $in
  command = $EMAR cr $out @$rspfile
  description = AR $out

'''
  suffix = utils.suffix(libname)
  build_dir = os.path.dirname(filename)

  if suffix == '.o':
    assert len(input_files) == 1
    input_file = escape_ninja_path(input_files[0])
    depfile = utils.unsuffixed_basename(input_file) + '.d'
    out += f'build {escape_ninja_path(libname)}: direct_cc {input_file}\n'
    out += f'  with_depfile = {depfile}\n'