gecko-dev/build/moz.configure/toolchain.configure

# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# 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/.

# yasm detection
# ==============================================================
yasm = check_prog('YASM', ['yasm'], allow_missing=True)

@depends_if(yasm)
@checking('yasm version')
@advanced
def yasm_version(yasm):
    import subprocess
    try:
        version = Version(subprocess.check_output(
            [yasm, '--version']
        ).splitlines()[0].split()[1])
        return version
    except subprocess.CalledProcessError as e:
        die('Failed to get yasm version: %s', e.message)

# Until we move all the yasm consumers out of old-configure.
# bug 1257904
add_old_configure_assignment('_YASM_MAJOR_VERSION',
                             delayed_getattr(yasm_version, 'major'))
add_old_configure_assignment('_YASM_MINOR_VERSION',
                             delayed_getattr(yasm_version, 'minor'))

@depends(yasm, target)
def yasm_asflags(yasm, target):
    if yasm:
        asflags = {
            ('OSX', 'x86'): '-f macho32',
            ('OSX', 'x86_64'): '-f macho64',
            ('WINNT', 'x86'): '-f win32',
            ('WINNT', 'x86_64'): '-f x64',
        }.get((target.os, target.cpu), None)
        if asflags is None:
            # We're assuming every x86 platform we support that's
            # not Windows or Mac is ELF.
            if target.cpu == 'x86':
                asflags = '-f elf32'
            elif target.cpu == 'x86_64':
                asflags = '-f elf64'
        if asflags:
            asflags += ' -rnasm -pnasm'
        return asflags

set_config('YASM_ASFLAGS', yasm_asflags)

@depends(yasm_asflags)
def have_yasm(value):
    if value:
        return True

set_config('HAVE_YASM', have_yasm)
# Until the YASM variable is not necessary in old-configure.
add_old_configure_assignment('YASM', have_yasm)