# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# 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/.

# /!\ Use js_option() instead of option() in this file. /!\
# =========================================================

@depends(build_project, '--help')
def building_js(build_project, help):
    return build_project == 'js'

# Exception to the rule above: JS_STANDALONE is a special option that doesn't
# want the js_option treatment. When we're done merging js/src/configure and
# top-level configure, it can go away, although the JS_STANDALONE config
# will still need to be set depending on building_js above.
option(env='JS_STANDALONE', default=building_js,
       help='Reserved for internal use')

@depends('JS_STANDALONE')
def js_standalone(value):
    if value:
        return True

set_config('JS_STANDALONE', js_standalone)
add_old_configure_assignment('JS_STANDALONE', js_standalone)

js_option('--disable-js-shell', default=building_js,
       help='Do not build the JS shell')

@depends('--disable-js-shell')
def js_disable_shell(value):
    if not value:
        return True

set_config('JS_DISABLE_SHELL', js_disable_shell)


# SpiderMonkey as a shared library, and how its symbols are exported
# ==================================================================
js_option('--disable-shared-js', default=building_js,
          help='Do not create a shared library')

js_option('--disable-export-js', default=building_js,
          help='Do not mark JS symbols as DLL exported/visible')

@depends('--disable-shared-js', '--disable-export-js', target)
def shared_js(shared_js, export_js, target):
    # We want shared JS always be enabled on Windows regardless of the enable bool.
    if target.os == 'WINNT':
        return True
    if shared_js:
        if not export_js:
            die('Must export JS symbols when building a shared library.')
        return True

set_config('JS_SHARED_LIBRARY', shared_js)
add_old_configure_assignment('JS_SHARED_LIBRARY', shared_js)

@depends('--disable-shared-js', '--disable-export-js')
def exportable_js_api(shared_js, export_js):
    if not shared_js and export_js:
        return True

set_define('STATIC_EXPORTABLE_JS_API', exportable_js_api)

@depends('--disable-shared-js', '--disable-export-js', target)
def static_js_api(shared_js, export_js, target):
    # Do not build JS as a static library on Windows, regardless of enable bool.
    if (target.os != 'WINNT') and not shared_js and not export_js:
        return True

set_define('STATIC_JS_API', static_js_api)

@depends('--disable-shared-js', target)
def static_js(value, target):
    # Do not build JS as a static library on Windows, regardless of enable bool.
    if (target.os != 'WINNT') and not value:
        return True

set_define('MOZ_STATIC_JS', static_js)

@deprecated_option(env='DISABLE_SHARED_JS', nargs='?')
def disable_shared_js(value):
    # DISABLE_SHARED_JS=1 gets us an empty PositiveOptionValue
    if value and not len(value):
        suggestion = '--disable-shared-js'
    else:
        suggestion = '--enable-shared-js'

    die('Setting %s is deprecated, use %s instead.',
        value.format('DISABLE_SHARED_JS'), suggestion)

@deprecated_option(env='DISABLE_EXPORT_JS', nargs='?')
def disable_export_js(value):
    # DISABLE_EXPORT_JS=1 gets us an empty PositiveOptionValue
    if value and not len(value):
        suggestion = '--disable-export-js'
    else:
        suggestion = '--enable-export-js'

    die('Setting %s is deprecated, use %s instead.',
        value.format('DISABLE_EXPORT_JS'), suggestion)


# Profiling
# =======================================================
js_option('--enable-instruments', env='MOZ_INSTRUMENTS',
          help='Enable instruments remote profiling')

@depends('--enable-instruments', target)
def instruments(value, target):
    if value and target.os != 'OSX':
        die('--enable-instruments cannot be used when targeting %s',
            target.os)
    if value:
        return True

set_config('MOZ_INSTRUMENTS', instruments)
set_define('MOZ_INSTRUMENTS', instruments)
add_old_configure_assignment('MOZ_INSTRUMENTS', instruments)
imply_option('--enable-profiling', instruments, reason='--enable-instruments')

js_option('--enable-callgrind', env='MOZ_CALLGRIND',
          help='Enable callgrind profiling')

@depends('--enable-callgrind')
def callgrind(value):
    if value:
        return True

set_define('MOZ_CALLGRIND', callgrind)
imply_option('--enable-profiling', callgrind)

js_option('--enable-profiling', env='MOZ_PROFILING',
          help='Set compile flags necessary for using sampling profilers '
               '(e.g. shark, perf)')

@depends('--enable-profiling')
def profiling(value):
    if value:
        return True

add_old_configure_assignment('MOZ_PROFILING', profiling)

@depends(profiling, target)
def imply_vtune(value, target):
    if value and (target.kernel == 'WINNT' or (target.kernel == 'Linux' and
                                               target.os == 'GNU')):
        return True

set_config('MOZ_PROFILING', profiling)
set_define('MOZ_PROFILING', profiling)
imply_option('--enable-vtune', imply_vtune, reason='--enable-profiling')


js_option('--enable-vtune', env='MOZ_VTUNE', help='Enable vtune profiling')

@depends('--enable-vtune')
def vtune(value):
    if value:
        return True

set_config('MOZ_VTUNE', vtune)
set_define('MOZ_VTUNE', vtune)


js_option('--enable-gc-trace', env='JS_GC_TRACE',
          help='Enable tracing of allocation and finalization')

@depends('--enable-gc-trace')
def gc_trace(value):
    if value:
        return True

set_define('JS_GC_TRACE', gc_trace)


js_option('--enable-perf', env='JS_ION_PERF',
          help='Enable Linux perf integration')

@depends('--enable-perf')
def ion_perf(value):
    if value:
        return True

set_define('JS_ION_PERF', ion_perf)


js_option('--enable-more-deterministic', env='JS_MORE_DETERMINISTIC',
          help='Enable changes that make the shell more deterministic')

@depends('--enable-more-deterministic')
def more_deterministic(value):
    if value:
        return True

set_define('JS_MORE_DETERMINISTIC', more_deterministic)


# CTypes
# =======================================================
@depends(building_js, '--help')
def ctypes_default(building_js, _):
    return not building_js

js_option('--enable-ctypes', help='Enable js-ctypes',
          default=ctypes_default)

build_ctypes = depends_if('--enable-ctypes')(lambda _: True)

set_config('BUILD_CTYPES', build_ctypes)
set_define('BUILD_CTYPES', build_ctypes)
add_old_configure_assignment('BUILD_CTYPES', build_ctypes)

@depends(build_ctypes, building_js)
def js_has_ctypes(ctypes, js):
    if ctypes and js:
        return True

set_config('JS_HAS_CTYPES', js_has_ctypes)
set_define('JS_HAS_CTYPES', js_has_ctypes)
add_old_configure_assignment('JS_HAS_CTYPES', js_has_ctypes)

@depends('--enable-ctypes', '--enable-compile-environment', '--help')
def ctypes_and_compile_environment(ctypes, compile_environment, _):
    return ctypes and compile_environment

include('ffi.configure', when=ctypes_and_compile_environment)

# Support various fuzzing options
# ==============================================================
with only_when('--enable-compile-environment'):
    option('--enable-fuzzing', help='Enable fuzzing support')

    @depends('--enable-fuzzing')
    def enable_fuzzing(value):
        if value:
            return True

    @depends(enable_fuzzing,
             try_compile(body='__AFL_COMPILER;',
                         check_msg='for AFL compiler',
                         when='--enable-fuzzing'))
    def enable_libfuzzer(fuzzing, afl):
        if fuzzing and not afl:
            return True

    set_config('FUZZING', enable_fuzzing)
    set_define('FUZZING', enable_fuzzing)

    set_config('LIBFUZZER', enable_libfuzzer)
    set_define('LIBFUZZER', enable_libfuzzer)