gecko-dev/js/moz.configure
Lars T Hansen 2517967e0e Bug 1637332 - wasm simd x86, part 2 - implement it. r=rhunt
This patch generalizes the x64 code that was moved into x86-shared
code in the previous patch, and makes it all work for x86.

Generally the changes are pedestrian.  The most interesting bit is
that signed right shift i64x2 is now scalarized in the compilers, not
in the macroassemblers, as this simplifies code everywhere.  This
gives rise to a new kind of porting API that reveals information about
what the macroassembler supports on the platform, in the form of the
MustScalarize/MustMaskShiftCount predicates in MacroAssembler.h.

Multiply i64x2, which is scalarized in the macroassemblers now, could
have been subjected to the same treatment, but I did not do so (yet)
because this op presented fewer problems than the right shift. (Discuss.)

Differential Revision: https://phabricator.services.mozilla.com/D74935
2020-06-05 06:39:32 +00:00

778 lines
26 KiB
Python

# -*- Mode: python; 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/.
# /!\ Use js_option() instead of option() in this file. /!\
# =========================================================
@depends(build_project)
def building_js(build_project):
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')
# SmooshMonkey (new frontend)
# ==================================================
# Define here in order to use the option from bindgen.configure.
js_option('--enable-smoosh', default=False,
help='Enable SmooshMonkey (new JS engine frontend)')
@depends('--enable-smoosh')
def enable_smoosh(value):
if value:
return True
set_config('JS_ENABLE_SMOOSH', enable_smoosh)
set_define('JS_ENABLE_SMOOSH', enable_smoosh)
include('../build/moz.configure/nspr.configure',
when='--enable-compile-environment')
include('../build/moz.configure/rust.configure',
when='--enable-compile-environment')
include('../build/moz.configure/bindgen.configure',
when='--enable-compile-environment')
@depends('JS_STANDALONE')
def js_standalone(value):
if value:
return True
set_config('JS_STANDALONE', js_standalone)
set_define('JS_STANDALONE', js_standalone)
add_old_configure_assignment('JS_STANDALONE', js_standalone)
js_option('--disable-js-shell', default=building_js,
help='{Build|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)
set_define('JS_64BIT', depends(target)(lambda t: t.bitness == 64 or None))
set_define('JS_PUNBOX64', depends(target)(lambda t: t.bitness == 64 or None))
set_define('JS_NUNBOX32', depends(target)(lambda t: t.bitness == 32 or None))
# SpiderMonkey as a shared library, and how its symbols are exported
# ==================================================================
js_option('--disable-shared-js', when=js_standalone,
help='{Create|Do not create} a shared library')
js_option('--disable-export-js', when=js_standalone,
help='{Mark|Do not mark} JS symbols as DLL exported/visible')
@depends('--disable-shared-js', '--disable-export-js', when=js_standalone)
def shared_js(shared_js, export_js):
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(shared_js, '--disable-export-js', when=js_standalone)
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(shared_js, exportable_js_api)
def static_js_api(shared_js, export_js):
if not shared_js and not export_js:
return True
set_define('STATIC_JS_API', static_js_api)
@depends(shared_js)
def static_js(value):
if not value:
return True
set_define('MOZ_STATIC_JS', static_js)
js_option(env='NO_RUST_PANIC_HOOK', when=js_standalone,
help='Disable rust panic hook')
set_define('NO_RUST_PANIC_HOOK', True, when='NO_RUST_PANIC_HOOK')
# JIT support
# =======================================================
@depends(target)
def jit_default(target):
if target.cpu in ('x86', 'x86_64', 'arm', 'aarch64', 'mips32', 'mips64'):
return True
return False
js_option('--enable-jit',
default=jit_default,
help='{Enable|Disable} use of the JITs')
@deprecated_option('--enable-ion')
def report_deprecated(value):
if value:
die('--enable-ion is deprecated, use --enable-jit instead')
else:
die('--disable-ion is deprecated, use --disable-jit instead')
# JIT code simulator for cross compiles
# =======================================================
js_option('--enable-simulator', choices=('arm', 'arm64', 'mips32', 'mips64'),
nargs=1,
help='Enable a JIT code simulator for the specified architecture')
@depends('--enable-jit', '--enable-simulator', target)
def simulator(jit_enabled, simulator_enabled, target):
if not jit_enabled or not simulator_enabled:
return
sim_cpu = simulator_enabled[0]
if sim_cpu in ('arm', 'mips32'):
if target.cpu != 'x86':
die('The %s simulator only works on x86.' % sim_cpu)
if sim_cpu in ('arm64', 'mips64'):
if target.cpu != 'x86_64':
die('The %s simulator only works on x86-64.' % sim_cpu)
return namespace(**{sim_cpu: True})
set_config('JS_SIMULATOR', depends_if(simulator)(lambda x: True))
set_config('JS_SIMULATOR_ARM', simulator.arm)
set_config('JS_SIMULATOR_ARM64', simulator.arm64)
set_config('JS_SIMULATOR_MIPS32', simulator.mips32)
set_config('JS_SIMULATOR_MIPS64', simulator.mips64)
set_define('JS_SIMULATOR', depends_if(simulator)(lambda x: True))
set_define('JS_SIMULATOR_ARM', simulator.arm)
set_define('JS_SIMULATOR_ARM64', simulator.arm64)
set_define('JS_SIMULATOR_MIPS32', simulator.mips32)
set_define('JS_SIMULATOR_MIPS64', simulator.mips64)
@depends('--enable-jit', simulator, target)
def jit_codegen(jit_enabled, simulator, target):
if not jit_enabled:
return namespace(none=True)
if simulator:
return simulator
if target.cpu == 'aarch64':
return namespace(arm64=True)
elif target.cpu == 'x86_64':
return namespace(x64=True)
return namespace(**{str(target.cpu): True})
set_config('JS_CODEGEN_NONE', jit_codegen.none)
set_config('JS_CODEGEN_ARM', jit_codegen.arm)
set_config('JS_CODEGEN_ARM64', jit_codegen.arm64)
set_config('JS_CODEGEN_MIPS32', jit_codegen.mips32)
set_config('JS_CODEGEN_MIPS64', jit_codegen.mips64)
set_config('JS_CODEGEN_X86', jit_codegen.x86)
set_config('JS_CODEGEN_X64', jit_codegen.x64)
set_define('JS_CODEGEN_NONE', jit_codegen.none)
set_define('JS_CODEGEN_ARM', jit_codegen.arm)
set_define('JS_CODEGEN_ARM64', jit_codegen.arm64)
set_define('JS_CODEGEN_MIPS32', jit_codegen.mips32)
set_define('JS_CODEGEN_MIPS64', jit_codegen.mips64)
set_define('JS_CODEGEN_X86', jit_codegen.x86)
set_define('JS_CODEGEN_X64', jit_codegen.x64)
# 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)
@depends(milestone)
def enable_profiling(milestone):
return milestone.is_nightly
js_option('--enable-profiling', env='MOZ_PROFILING', default=enable_profiling,
help='{Set|Do not 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)
with only_when('--enable-compile-environment'):
imply_option('--enable-frame-pointers', True, when=profiling)
@depends(profiling, target)
def imply_vtune(value, target):
ok_cpu = target.cpu in ['x86', 'x86_64']
ok_kernel = target.kernel == 'WINNT' or \
(target.kernel == 'Linux' and target.os == 'GNU')
if value and ok_cpu and ok_kernel:
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-probes', env='JS_GC_PROBES',
help='Turn on probes for allocation and finalization')
@depends('--enable-gc-probes')
def gc_probes(value):
if value:
return True
set_define('JS_GC_PROBES', gc_probes)
js_option('--enable-gczeal',
default=depends(when=moz_debug)(lambda: True),
help='{Enable|Disable} zealous GCing')
set_define('JS_GC_ZEAL',
depends_if('--enable-gczeal')(lambda _: True))
# Use a smaller chunk size for GC chunks
# ========================================================
# Use large (1MB) chunks by default. This option can be used to give
# smaller (currently 256K) chunks.
js_option('--enable-small-chunk-size',
help='Allocate memory for JS GC things in smaller chunks')
set_define('JS_GC_SMALL_CHUNK_SIZE',
depends(when='--enable-small-chunk-size')(lambda: True))
# Trace logging.
# =======================================================
@depends(milestone)
def default_trace_logging(milestone):
return milestone.is_nightly
js_option('--enable-trace-logging',
default=default_trace_logging,
help='{Enable|Disable} trace logging')
set_config('ENABLE_TRACE_LOGGING',
depends_if('--enable-trace-logging')(lambda x: True))
set_define('JS_TRACE_LOGGING',
depends_if('--enable-trace-logging')(lambda x: True))
# Enable breakpoint for artificial OOMs
# =======================================================
js_option('--enable-oom-breakpoint',
help='Enable a breakpoint function for artificial OOMs')
set_define('JS_OOM_BREAKPOINT',
depends_if('--enable-oom-breakpoint')(lambda _: True))
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-jitspew',
default=depends(when=moz_debug)(lambda: True),
help='{Enable|Disable} the Jit spew and IONFLAGS environment '
'variable')
set_define('JS_JITSPEW',
depends_if('--enable-jitspew')(lambda _: True))
set_config('JS_JITSPEW',
depends_if('--enable-jitspew')(lambda _: True))
# Also enable the structured spewer
set_define('JS_STRUCTURED_SPEW',
depends_if('--enable-jitspew')(lambda _: True))
set_config('JS_STRUCTURED_SPEW',
depends_if('--enable-jitspew')(lambda _: True))
@depends('--enable-jit', '--enable-jitspew', simulator, target, moz_debug)
def jit_disasm_arm(jit_enabled, spew, simulator, target, debug):
if not jit_enabled:
return
if simulator and (debug or spew):
if getattr(simulator, 'arm', None):
return True
if target.cpu == 'arm' and (debug or spew):
return True
set_config('JS_DISASM_ARM', jit_disasm_arm)
set_define('JS_DISASM_ARM', jit_disasm_arm)
@depends('--enable-jit', '--enable-jitspew', simulator, target, moz_debug)
def jit_disasm_arm64(jit_enabled, spew, simulator, target, debug):
if not jit_enabled:
return
if simulator and (debug or spew):
if getattr(simulator, 'arm64', None):
return True
if target.cpu == 'aarch64' and (debug or spew):
return True
set_config('JS_DISASM_ARM64', jit_disasm_arm64)
set_define('JS_DISASM_ARM64', jit_disasm_arm64)
# When enabled, masm will generate assumeUnreachable calls that act as
# assertions in the generated code. This option is worth disabling when you
# have to track mutated values through the generated code, to avoid constantly
# dumping registers on and off the stack.
js_option('--enable-masm-verbose',
default=depends(when=moz_debug)(lambda: True),
help='{Enable|Disable} MacroAssembler verbosity of generated code.')
set_define('JS_MASM_VERBOSE',
depends_if('--enable-masm-verbose')(lambda _: True))
set_config('JS_MASM_VERBOSE',
depends_if('--enable-masm-verbose')(lambda _: True))
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)
def ctypes_default(building_js):
return not building_js
js_option('--enable-ctypes',
default=ctypes_default,
help='{Enable|Disable} js-ctypes')
build_ctypes = depends_if('--enable-ctypes')(lambda _: True)
set_config('BUILD_CTYPES', build_ctypes)
set_define('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)
@depends('--enable-ctypes', '--enable-compile-environment')
def ctypes_and_compile_environment(ctypes, compile_environment):
return ctypes and compile_environment
include('ffi.configure', when=ctypes_and_compile_environment)
# Enable pipeline operator
# ===================================================
js_option('--enable-pipeline-operator', default=False, help='Enable pipeline operator')
@depends('--enable-pipeline-operator')
def enable_pipeline_operator(value):
if value:
return True
set_config('ENABLE_PIPELINE_OPERATOR', enable_pipeline_operator)
set_define('ENABLE_PIPELINE_OPERATOR', enable_pipeline_operator)
# Experimental support for BinAST
# ==============================================================
@depends(milestone.is_nightly)
def default_binast(is_nightly):
return is_nightly
js_option('--enable-binast',
default=default_binast,
help="{Enable|Disable} BinAST support")
set_config('JS_BUILD_BINAST', depends_if('--enable-binast')(lambda x: True))
set_define('JS_BUILD_BINAST', depends_if('--enable-binast')(lambda x: True))
# SIMD acceleration for encoding_rs
# ==============================================================
js_option('--enable-rust-simd', env='MOZ_RUST_SIMD',
help='Enable explicit SIMD in Rust code.')
@depends('--enable-rust-simd', target)
def rust_simd(value, target):
# As of 2019-09-17, the simd-accel feature of encoding_rs has not
# been properly set up outside aarch64, armv7, x86 and x86_64.
if target.cpu in ('aarch64', 'arm', 'x86', 'x86_64') and value:
return True
set_config('MOZ_RUST_SIMD', rust_simd)
set_define('MOZ_RUST_SIMD', rust_simd)
# Experimental support for wasm code generation with Cranelift
#
# Note, you may have to disable features not supported by Cranelift
# (multi-value, threads) to make Cranelift actually available
# ==============================================================
js_option('--enable-cranelift',
default=milestone.is_nightly,
help='{Enable|Disable} Cranelift code generator for wasm')
set_config('ENABLE_WASM_CRANELIFT', depends_if('--enable-cranelift')(lambda x: True))
set_define('ENABLE_WASM_CRANELIFT', depends_if('--enable-cranelift')(lambda x: True))
# Support for debugging code generated by wasm backends
# =====================================================
js_option('--enable-wasm-codegen-debug',
default=depends(when=moz_debug)(lambda: True),
help='{Enable|Disable} debugging for wasm codegen')
set_config('WASM_CODEGEN_DEBUG', depends_if('--enable-wasm-codegen-debug')(lambda x: True))
set_define('WASM_CODEGEN_DEBUG', depends_if('--enable-wasm-codegen-debug')(lambda x: True))
# Support for typed objects.
# =====================================================
@depends(milestone.is_nightly)
def default_typed_objects(is_nightly):
return is_nightly
js_option('--enable-typed-objects',
default=default_typed_objects,
help='{Enable|Disable} typed objects')
set_config('JS_HAS_TYPED_OBJECTS', depends_if('--enable-typed-objects')(lambda x: True))
set_define('JS_HAS_TYPED_OBJECTS', depends_if('--enable-typed-objects')(lambda x: True))
# Support for WebAssembly bulk memory operations.
# =====================================================
@depends(milestone.is_nightly)
def default_wasm_bulk_memory(is_nightly):
return is_nightly
js_option('--enable-wasm-bulk-memory',
default=default_wasm_bulk_memory,
help='{Enable|Disable} WebAssembly bulk memory operators')
set_config('ENABLE_WASM_BULKMEM_OPS', depends_if('--enable-wasm-bulk-memory')(lambda x: True))
set_define('ENABLE_WASM_BULKMEM_OPS', depends_if('--enable-wasm-bulk-memory')(lambda x: True))
# Support for WebAssembly reference types.
# =====================================================
@depends(milestone.is_nightly)
def default_wasm_reftypes(is_nightly):
return is_nightly
js_option('--enable-wasm-reftypes',
default=default_wasm_reftypes,
help='{Enable|Disable} WebAssembly reference types')
set_config('ENABLE_WASM_REFTYPES', depends_if('--enable-wasm-reftypes')(lambda x: True))
set_define('ENABLE_WASM_REFTYPES', depends_if('--enable-wasm-reftypes')(lambda x: True))
# Support for WebAssembly GC.
# ===========================
@depends(milestone.is_nightly, '--enable-wasm-reftypes', '--enable-typed-objects')
def default_wasm_gc(is_nightly, reftypes, typed_objects):
if is_nightly and reftypes and typed_objects:
return True
js_option('--enable-wasm-gc',
default=default_wasm_gc,
help='{Enable|Disable} WebAssembly GC')
@depends('--enable-wasm-gc', '--enable-wasm-reftypes', '--enable-typed-objects')
def wasm_gc(value, reftypes, typed_objects):
if not value:
return
if reftypes and typed_objects:
return True
die('--enable-wasm-gc only possible with --enable-wasm-reftypes and --enable-typed-objects')
set_config('ENABLE_WASM_GC', wasm_gc)
set_define('ENABLE_WASM_GC', wasm_gc)
# Support for WebAssembly private ref types.
# Prevent (ref T) types from being exposed to JS content so that wasm need do
# no typechecking at the JS/wasm boundary
# ===========================================================================
@depends(milestone.is_nightly, '--enable-wasm-gc')
def default_wasm_private_reftypes(is_nightly, gc):
if gc and is_nightly:
return True
js_option('--enable-wasm-private-reftypes',
default=default_wasm_private_reftypes,
help='{Enable|Disable} WebAssembly private reference types')
set_config('WASM_PRIVATE_REFTYPES', depends_if('--enable-wasm-private-reftypes')(lambda x: True))
set_define('WASM_PRIVATE_REFTYPES', depends_if('--enable-wasm-private-reftypes')(lambda x: True))
# Support for the WebAssembly multi-value proposal.
# Do not remove until Cranelift supports multi-value.
# =====================================================
js_option('--disable-wasm-multi-value',
help='Disable WebAssembly multi-value blocks and function calls')
@depends('--disable-wasm-multi-value')
def enable_wasm_multi_value(value):
if value:
return True
set_config('ENABLE_WASM_MULTI_VALUE', enable_wasm_multi_value)
set_define('ENABLE_WASM_MULTI_VALUE', enable_wasm_multi_value)
# Support for WebAssembly shared memory and atomics.
#
# This affects the JS shell only and here to allow the use of
# Cranelift in the shell. Once Cranelift supports shared memory
# and atomics it can go away.
# =====================================================
js_option('--disable-shared-memory', help='Disable JS/WebAssembly shared memory and atomics')
@depends('--disable-shared-memory')
def enable_shared_memory(value):
if value:
return True
set_config('ENABLE_SHARED_MEMORY', enable_shared_memory)
set_define('ENABLE_SHARED_MEMORY', enable_shared_memory)
# Support for WebAssembly SIMD
# =====================================================
@depends('--enable-jit', '--enable-simulator', target, milestone)
def default_wasm_simd(jit_enabled, simulator, target, milestone):
if not jit_enabled or simulator:
return
if milestone.is_nightly and target.cpu in ('x86_64', 'x86'):
return True
js_option('--enable-wasm-simd',
default=default_wasm_simd,
help='{Enable|Disable} WebAssembly SIMD')
@depends('--enable-wasm-simd', '--enable-jit', '--enable-simulator', target)
def wasm_simd(value, jit_enabled, simulator, target):
if not value:
return
if jit_enabled and not simulator:
if target.cpu in ('x86_64', 'x86'):
return True
die('--enable-wasm-simd only possible when targeting the x86_64/x86 jit')
set_config('ENABLE_WASM_SIMD', wasm_simd)
set_define('ENABLE_WASM_SIMD', wasm_simd)
# Options for generating the shell as a script
# ============================================
js_option('--with-qemu-exe', nargs=1, help='Use path as an arm emulator on host platforms')
set_config('QEMU_EXE', depends_if('--with-qemu-exe')(lambda x: x))
js_option('--with-cross-lib', nargs=1, default=depends(target.alias)(lambda x: '/usr/%s' % x),
help='Use dir as the location for arm libraries')
set_config('CROSS_LIB', depends_if('--with-cross-lib')(lambda x: x))
# Enable static checking using sixgill
# ====================================
js_option('--with-sixgill', nargs=1, help='Enable static checking of code using sixgill')
@depends_if('--with-sixgill')
@imports('os')
def sixgill(value):
for f in ('bin/xdbfind', 'gcc/xgill.so', 'scripts/wrap_gcc/g++'):
if not os.path.exists(os.path.join(value[0], f)):
die('The sixgill plugin and binaries are not at the specified path')
return value[0]
set_config('SIXGILL_PATH', sixgill)
# Support for readline
# =====================================================
@depends('--enable-js-shell', target_is_windows, compile_environment)
def editline(js_shell, is_windows, compile_environment):
return js_shell and not is_windows and compile_environment
js_option('--enable-readline', help='Link js shell to system readline library',
when=editline)
has_readline = check_symbol('readline', flags=['-lreadline'], when='--enable-readline',
onerror=lambda: die('No system readline library found'))
set_config('EDITLINE_LIBS', ['-lreadline'], when=has_readline)
@depends('--enable-readline', editline, when=editline)
def bundled_editline(readline, editline):
return editline and not readline
set_config('JS_BUNDLED_EDITLINE', bundled_editline)
set_define('EDITLINE', True, when=editline)
# JIT observers
# =============
js_option('--with-jitreport-granularity', default='3', choices=('0', '1', '2', '3'),
help='Default granularity at which to report JIT code to external tools '
'(0 - no info, 1 - code ranges for while functions only, '
'2 - per-line information, 3 - per-op information)')
set_define('JS_DEFAULT_JITREPORT_GRANULARITY',
depends_if('--with-jitreport-granularity')(lambda value: value[0]))
# ECMAScript Internationalization API Support (uses ICU)
# ======================================================
js_option('--with-system-icu', help='Use system ICU')
system_icu = pkg_check_modules('MOZ_ICU', 'icu-i18n >= 67.1', when='--with-system-icu')
set_config('MOZ_SYSTEM_ICU', True, when=system_icu)
set_define('MOZ_SYSTEM_ICU', True, when=system_icu)
js_option('--without-intl-api', help='Disable ECMAScript Internationalization API')
@depends('--with-intl-api', building_js)
def check_intl_api(enabled, building_js):
if not enabled and not building_js:
die('--without-intl-api is not supported')
set_config('JS_HAS_INTL_API', True, when='--with-intl-api')
set_define('JS_HAS_INTL_API', True, when='--with-intl-api')
@depends(check_build_environment, when='--with-intl-api')
@imports(_from='__builtin__', _import='open')
@imports(_from='__builtin__', _import='ValueError')
def icu_version(build_env):
path = os.path.join(build_env.topsrcdir, 'intl', 'icu', 'source', 'common',
'unicode', 'uvernum.h')
with open(path, encoding='utf-8') as fh:
for line in fh:
if line.startswith('#define'):
define = line.split(None, 3)
if len(define) == 3 and define[1] == 'U_ICU_VERSION_MAJOR_NUM':
try:
return str(int(define[2]))
except ValueError:
pass
die('Cannot determine ICU version number from uvernum.h header file')
set_config('MOZ_ICU_VERSION', icu_version)
@depends(icu_version, target, when='--with-intl-api')
def icu_data_file(version, target):
# target.endianness is always 'big' or 'little'
return 'icudt%s%s.dat' % (version, target.endianness[0])
set_config('ICU_DATA_FILE', icu_data_file)
# Source files that use ICU should have control over which parts of the ICU
# namespace they want to use.
set_define('U_USING_ICU_NAMESPACE', '0', when='--with-intl-api')
# We build ICU as a static library.
set_define('U_STATIC_IMPLEMENTATION', True, when=depends(system_icu)(lambda x: not x))
@depends(yasm, gnu_as, target, compile_environment)
def can_build_data_file(yasm, gnu_as, target, compile_environment):
if not compile_environment or (target.kernel == 'WINNT' and target.cpu == 'aarch64'):
return
if not yasm and not gnu_as:
die('Building ICU requires either yasm or a GNU assembler. If you do not have '
'either of those available for this platform you must use --without-intl-api')