config/make-stl-wrappers.py
author Mike Shal <mshal@mozilla.com>
Wed, 08 Nov 2017 17:42:27 -0500
changeset 441900 828d43ec1b16edaac69c42f15561f26e209051f1
parent 337400 68da139d0866977c0ada86319fa94388f2255446
child 441926 5ee7f274f84b5b7f98573d7b4097f39af47f2783
permissions -rw-r--r--
Bug 1407432 - Move stl wrapper generation into moz.build; r=froydnj This is fairly straightforward to represent as a GENERATED_FILES, though we have to take some care to construct the outputs tuple correctly. This script needs to run during export, and unfortunately none of the STL headers have proper file extensions, so the 'new' header is special-cased in the recursive make backend to serve as a marker for running it in the correct tier. We can't remove the stl-headers file yet because it is still used for the system header generation. MozReview-Commit-ID: 3tQTOY0LAsQ

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import print_function
import os, re, string, sys
from mozbuild.util import FileAvoidWrite

def find_in_path(file, searchpath):
    for dir in searchpath.split(os.pathsep):
        f = os.path.join(dir, file)
        if os.path.exists(f):
            return f
    return ''

def header_path(header, compiler):
    if compiler == 'gcc':
        # we use include_next on gcc
        return header
    elif compiler == 'msvc':
        return find_in_path(header, os.environ.get('INCLUDE', ''))
    else:
        # hope someone notices this ...
        raise NotImplementedError(compiler)

# The 'unused' arg is the output file from the file_generate action. We actually
# generate all the files in header_list
def gen_wrappers(unused, outdir, compiler, template_file, *header_list):
    template = open(template_file, 'r').read()

    for header in header_list:
        path = header_path(header, compiler)
        with FileAvoidWrite(os.path.join(outdir, header)) as f:
            f.write(string.Template(template).substitute(HEADER=header,
                                                         HEADER_PATH=path))