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test_other.py
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# coding=utf-8
# Copyright 2013 The Emscripten Authors. All rights reserved.
# Emscripten is available under two separate licenses, the MIT license and the
# University of Illinois/NCSA Open Source License. Both these licenses can be
# found in the LICENSE file.
# noqa: E241
from functools import wraps
import glob
import gzip
import itertools
import json
import os
import re
import select
import shlex
import shutil
import subprocess
import sys
import time
import tempfile
import unittest
import uuid
from pathlib import Path
from subprocess import PIPE, STDOUT
if __name__ == '__main__':
raise Exception('do not run this file directly; do something like: tests/runner other')
from tools.shared import try_delete, config
from tools.shared import EMCC, EMXX, EMAR, EMRANLIB, PYTHON, FILE_PACKAGER, WINDOWS
from tools.shared import CLANG_CC, CLANG_CXX, LLVM_AR, LLVM_DWARFDUMP, LLVM_DWP, EMCMAKE, EMCONFIGURE
from common import RunnerCore, path_from_root, is_slow_test, ensure_dir, disabled, make_executable
from common import env_modify, no_mac, no_windows, requires_native_clang, with_env_modify
from common import create_file, parameterized, NON_ZERO, node_pthreads, TEST_ROOT, test_file
from common import compiler_for, read_file, read_binary, EMBUILDER, require_v8, require_node
from common import also_with_minimal_runtime, also_with_wasm_bigint, EMTEST_BUILD_VERBOSE
from tools import shared, building, utils, deps_info, response_file
import common
import jsrun
import clang_native
from tools import line_endings
from tools import webassembly
scons_path = utils.which('scons')
emmake = shared.bat_suffix(path_from_root('emmake'))
emconfig = shared.bat_suffix(path_from_root('em-config'))
emsize = shared.bat_suffix(path_from_root('emsize'))
emprofile = shared.bat_suffix(path_from_root('emprofile'))
emsymbolizer = shared.bat_suffix(path_from_root('emsymbolizer'))
wasm_opt = Path(building.get_binaryen_bin(), 'wasm-opt')
class temp_directory():
def __init__(self, dirname):
self.dir = dirname
def __enter__(self):
self.directory = tempfile.mkdtemp(prefix='emtest_temp_', dir=self.dir)
self.prev_cwd = os.getcwd()
os.chdir(self.directory)
print('temp_directory: ' + self.directory)
return self.directory
def __exit__(self, type, value, traceback):
os.chdir(self.prev_cwd)
def uses_canonical_tmp(func):
"""Decorator that signals the use of the canonical temp by a test method.
This decorator takes care of cleaning the directory after the
test to satisfy the leak detector.
"""
@wraps(func)
def decorated(self):
# Before running the test completely remove the canonical_tmp
if os.path.exists(self.canonical_temp_dir):
shutil.rmtree(self.canonical_temp_dir)
try:
func(self)
finally:
# Make sure the test isn't lying about the fact that it uses
# canonical_tmp
self.assertTrue(os.path.exists(self.canonical_temp_dir))
# Remove the temp dir in a try-finally, as otherwise if the
# test fails we would not clean it up, and if leak detection
# is set we will show that error instead of the actual one.
shutil.rmtree(self.canonical_temp_dir)
return decorated
def also_with_wasmfs(f):
def metafunc(self, wasmfs):
if wasmfs:
self.set_setting('WASMFS')
self.emcc_args.append('-DWASMFS')
f(self)
else:
f(self)
metafunc._parameterize = {'': (False,),
'wasmfs': (True,)}
return metafunc
def wasmfs_all_backends(f):
def metafunc(self, backend):
self.set_setting('WASMFS')
self.emcc_args.append('-DWASMFS')
self.emcc_args.append(f'-D{backend}')
f(self)
metafunc._parameterize = {'': ('WASMFS_MEMORY_BACKEND',),
'node': ('WASMFS_NODE_BACKEND',)}
return metafunc
def also_with_wasmfs_all_backends(f):
def metafunc(self, backend):
if backend:
self.set_setting('WASMFS')
self.emcc_args.append('-DWASMFS')
self.emcc_args.append(f'-D{backend}')
f(self)
else:
f(self)
metafunc._parameterize = {'': (None,),
'wasmfs': ('WASMFS_MEMORY_BACKEND',),
'wasmfs_node': ('WASMFS_NODE_BACKEND',)}
return metafunc
class other(RunnerCore):
def assertIsObjectFile(self, filename):
self.assertTrue(building.is_wasm(filename))
def assertIsWasmDylib(self, filename):
self.assertTrue(building.is_wasm_dylib(filename))
def do_other_test(self, testname, emcc_args=[], **kwargs):
self.do_run_in_out_file_test('other', testname, emcc_args=emcc_args, **kwargs)
def run_on_pty(self, cmd):
master, slave = os.openpty()
output = []
try:
with env_modify({'TERM': 'xterm-color'}):
proc = subprocess.Popen(cmd, stdout=slave, stderr=slave)
while proc.poll() is None:
r, w, x = select.select([master], [], [], 1)
if r:
output.append(os.read(master, 1024))
return (proc.returncode, b''.join(output))
finally:
os.close(master)
os.close(slave)
def parse_wasm(self, filename):
wat = self.get_wasm_text(filename)
imports = []
exports = []
funcs = []
for line in wat.splitlines():
line = line.strip()
if line.startswith('(import '):
line = line.strip('()')
parts = line.split()
module = parts[1].strip('"')
name = parts[2].strip('"')
imports.append('%s.%s' % (module, name))
if line.startswith('(export '):
line = line.strip('()')
name = line.split()[1].strip('"')
exports.append(name)
if line.startswith('(func '):
line = line.strip('()')
name = line.split()[1].strip('"')
funcs.append(name)
return imports, exports, funcs
# Test that running `emcc -v` always works even in the presence of `EMCC_CFLAGS`.
# This needs to work because many tools run `emcc -v` internally and it should
# always work even if the user has `EMCC_CFLAGS` set.
@with_env_modify({'EMCC_CFLAGS': '-should -be -ignored'})
def test_emcc_v(self):
for compiler in [EMCC, EMXX]:
# -v, without input files
proc = self.run_process([compiler, '-v'], stdout=PIPE, stderr=PIPE)
self.assertEqual(proc.stdout, '')
# assert that the emcc message comes first. We had a bug where the sub-process output
# from clang would be flushed to stderr first.
self.assertContained('emcc (Emscripten gcc/clang-like replacement', proc.stderr)
self.assertTrue(proc.stderr.startswith('emcc (Emscripten gcc/clang-like replacement'))
self.assertContained('clang version %s' % shared.EXPECTED_LLVM_VERSION, proc.stderr)
self.assertContained('GNU', proc.stderr)
self.assertContained('Target: wasm32-unknown-emscripten', proc.stderr)
self.assertNotContained('this is dangerous', proc.stderr)
def test_emcc_check(self):
proc = self.run_process([EMCC, '--check'], stdout=PIPE, stderr=PIPE)
self.assertEqual(proc.stdout, '')
self.assertContained('emcc (Emscripten gcc/clang-like replacement', proc.stderr)
self.assertContained('Running sanity checks', proc.stderr)
proc = self.run_process([EMCC, '--check'], stdout=PIPE, stderr=PIPE)
self.assertContained('Running sanity checks', proc.stderr)
def test_emcc_generate_config(self):
config_path = './emscripten_config'
with env_modify({'EM_CONFIG': config_path}):
for compiler in [EMCC, EMXX]:
self.assertNotExists(config_path)
self.run_process([compiler, '--generate-config'])
self.assertExists(config_path)
config_contents = read_file(config_path)
self.assertContained('EMSCRIPTEN_ROOT', config_contents)
self.assertContained('LLVM_ROOT', config_contents)
os.remove(config_path)
def test_emcc_output_mjs(self):
self.run_process([EMCC, '-o', 'hello_world.mjs', test_file('hello_world.c')])
output = read_file('hello_world.mjs')
self.assertContained('export default Module;', output)
# TODO(sbc): Test that this is actually runnable. We currently don't have
# any tests for EXPORT_ES6 but once we do this should be enabled.
# self.assertContained('hello, world!', self.run_js('hello_world.mjs'))
@parameterized({
'': (True, [],),
'no_import_meta': (False, ['-sUSE_ES6_IMPORT_META=0'],),
})
def test_emcc_output_worker_mjs(self, has_import_meta, args):
os.mkdir('subdir')
self.run_process([EMCC, '-o', 'subdir/hello_world.mjs', '-pthread', '-O1',
test_file('hello_world.c')] + args)
src = read_file('subdir/hello_world.mjs')
self.assertContainedIf("new URL('hello_world.wasm', import.meta.url)", src, condition=has_import_meta)
self.assertContainedIf("new Worker(new URL('hello_world.worker.js', import.meta.url))", src, condition=has_import_meta)
self.assertContained('export default Module;', src)
src = read_file('subdir/hello_world.worker.js')
self.assertContained('import("./hello_world.mjs")', src)
def test_emcc_output_worker_mjs_single_file(self):
self.run_process([EMCC, '-o', 'hello_world.mjs', '-pthread',
test_file('hello_world.c'), '-sSINGLE_FILE=1'])
src = read_file('hello_world.mjs')
self.assertNotContained("new URL('data:", src)
self.assertContained("new Worker(new URL('hello_world.worker.js', import.meta.url))", src)
def test_emcc_output_mjs_closure(self):
self.run_process([EMCC, '-o', 'hello_world.mjs',
test_file('hello_world.c'), '--closure=1'])
src = read_file('hello_world.mjs')
self.assertContained('new URL("hello_world.wasm", import.meta.url)', src)
def test_export_es6_implies_modularize(self):
self.run_process([EMCC, test_file('hello_world.c'), '-sEXPORT_ES6=1'])
src = read_file('a.out.js')
self.assertContained('export default Module;', src)
def test_export_es6_requires_modularize(self):
err = self.expect_fail([EMCC, test_file('hello_world.c'), '-sEXPORT_ES6=1', '-sMODULARIZE=0'])
self.assertContained('EXPORT_ES6 requires MODULARIZE to be set', err)
def test_export_es6_allows_export_in_post_js(self):
self.run_process([EMCC, test_file('hello_world.c'), '-O3', '-sEXPORT_ES6=1', '--post-js', test_file('export_module.js')])
src = read_file('a.out.js')
self.assertContained('export{doNothing};', src)
def test_emcc_out_file(self):
# Verify that "-ofile" works in addition to "-o" "file"
self.run_process([EMCC, '-c', '-ofoo.o', test_file('hello_world.c')])
self.assertExists('foo.o')
self.run_process([EMCC, '-ofoo.js', 'foo.o'])
self.assertExists('foo.js')
@parameterized({
'c': [EMCC, '.c'],
'cxx': [EMXX, '.cpp']})
def test_emcc_basics(self, compiler, suffix):
# emcc src.cpp ==> writes a.out.js and a.out.wasm
self.run_process([compiler, test_file('hello_world' + suffix)])
self.assertExists('a.out.js')
self.assertExists('a.out.wasm')
self.assertContained('hello, world!', self.run_js('a.out.js'))
# --version
output = self.run_process([compiler, '--version'], stdout=PIPE, stderr=PIPE)
output = output.stdout.replace('\r', '')
self.assertContained('emcc (Emscripten gcc/clang-like replacement', output)
self.assertContained('''Copyright (C) 2014 the Emscripten authors (see AUTHORS.txt)
This is free and open source software under the MIT license.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
''', output)
# --help
output = self.run_process([compiler, '--help'], stdout=PIPE, stderr=PIPE)
self.assertContained('Display this information', output.stdout)
self.assertContained('Most clang options will work', output.stdout)
# -dumpmachine
output = self.run_process([compiler, '-dumpmachine'], stdout=PIPE, stderr=PIPE)
self.assertContained('wasm32-unknown-emscripten', output.stdout)
# -dumpversion
output = self.run_process([compiler, '-dumpversion'], stdout=PIPE, stderr=PIPE)
self.assertEqual(shared.EMSCRIPTEN_VERSION, output.stdout.strip())
# properly report source code errors, and stop there
self.clear()
stderr = self.expect_fail([compiler, test_file('hello_world_error' + suffix)])
self.assertNotContained('IOError', stderr) # no python stack
self.assertNotContained('Traceback', stderr) # no python stack
self.assertContained('error: invalid preprocessing directive', stderr)
self.assertContained(["error: use of undeclared identifier 'cheez", "error: unknown type name 'cheez'"], stderr)
self.assertContained('errors generated.', stderr.splitlines()[-2])
@parameterized({
'c': [EMCC, '.c'],
'cxx': [EMXX, '.cpp']})
def test_emcc_2(self, compiler, suffix):
# emcc src.cpp -c and emcc src.cpp -o src.[o|bc] ==> should give a .bc file
for args in [[], ['-o', 'src.o'], ['-o', 'src.bc'], ['-o', 'src.so']]:
print('args:', args)
target = args[1] if len(args) == 2 else 'hello_world.o'
self.clear()
self.run_process([compiler, '-c', test_file('hello_world' + suffix)] + args)
syms = building.llvm_nm(target)
self.assertIn('main', syms['defs'])
# wasm backend will also have '__original_main' or such
self.assertEqual(len(syms['defs']), 2)
if target == 'js': # make sure emcc can recognize the target as a bitcode file
shutil.move(target, target + '.bc')
target += '.bc'
self.run_process([compiler, target, '-o', target + '.js'])
self.assertContained('hello, world!', self.run_js(target + '.js'))
@parameterized({
'c': [EMCC, '.c'],
'cxx': [EMXX, '.cpp']})
def test_emcc_3(self, compiler, suffix):
# handle singleton archives
self.run_process([compiler, '-c', test_file('hello_world' + suffix), '-o', 'a.o'])
self.run_process([LLVM_AR, 'r', 'a.a', 'a.o'], stdout=PIPE, stderr=PIPE)
self.run_process([compiler, 'a.a'])
self.assertContained('hello, world!', self.run_js('a.out.js'))
# emcc [..] -o [path] ==> should work with absolute paths
for path in [os.path.abspath(Path('../file1.js')), Path('b_dir/file2.js')]:
print(path)
os.chdir(self.get_dir())
self.clear()
print(os.listdir(os.getcwd()))
ensure_dir(Path('a_dir/b_dir'))
os.chdir('a_dir')
# use single file so we don't have more files to clean up
self.run_process([compiler, test_file('hello_world' + suffix), '-o', path, '-sSINGLE_FILE'])
last = os.getcwd()
os.chdir(os.path.dirname(path))
self.assertContained('hello, world!', self.run_js(os.path.basename(path)))
os.chdir(last)
try_delete(path)
@is_slow_test
@parameterized({
'c': [EMCC],
'cxx': [EMXX]})
def test_emcc_4(self, compiler):
# Optimization: emcc src.cpp -o something.js [-Ox]. -O0 is the same as not specifying any optimization setting
# link_param are used after compiling first
for params, opt_level, link_params, closure, has_malloc in [
(['-o', 'something.js'], 0, None, 0, 1),
(['-o', 'something.js', '-O0', '-g'], 0, None, 0, 0),
(['-o', 'something.js', '-O1'], 1, None, 0, 0),
(['-o', 'something.js', '-O1', '-g'], 1, None, 0, 0), # no closure since debug
(['-o', 'something.js', '-O2'], 2, None, 0, 1),
(['-o', 'something.js', '-O2', '-g'], 2, None, 0, 0),
(['-o', 'something.js', '-Os'], 2, None, 0, 1),
(['-o', 'something.js', '-O3'], 3, None, 0, 1),
# and, test compiling first
(['-c', '-o', 'something.o'], 0, [], 0, 0),
(['-c', '-o', 'something.o', '-O0'], 0, [], 0, 0),
(['-c', '-o', 'something.o', '-O1'], 1, ['-O1'], 0, 0),
(['-c', '-o', 'something.o', '-O2'], 2, ['-O2'], 0, 0),
(['-c', '-o', 'something.o', '-O3'], 3, ['-O3'], 0, 0),
(['-O1', '-c', '-o', 'something.o'], 1, [], 0, 0),
# non-wasm
(['-sWASM=0', '-o', 'something.js'], 0, None, 0, 1),
(['-sWASM=0', '-o', 'something.js', '-O0', '-g'], 0, None, 0, 0),
(['-sWASM=0', '-o', 'something.js', '-O1'], 1, None, 0, 0),
(['-sWASM=0', '-o', 'something.js', '-O1', '-g'], 1, None, 0, 0), # no closure since debug
(['-sWASM=0', '-o', 'something.js', '-O2'], 2, None, 0, 1),
(['-sWASM=0', '-o', 'something.js', '-O2', '-g'], 2, None, 0, 0),
(['-sWASM=0', '-o', 'something.js', '-Os'], 2, None, 0, 1),
(['-sWASM=0', '-o', 'something.js', '-O3'], 3, None, 0, 1),
# and, test compiling to bitcode first
(['-flto', '-c', '-o', 'something.o'], 0, [], 0, 0),
(['-flto', '-c', '-o', 'something.o', '-O0'], 0, [], 0, 0),
(['-flto', '-c', '-o', 'something.o', '-O1'], 1, ['-O1'], 0, 0),
(['-flto', '-c', '-o', 'something.o', '-O2'], 2, ['-O2'], 0, 0),
(['-flto', '-c', '-o', 'something.o', '-O3'], 3, ['-O3'], 0, 0),
(['-flto', '-O1', '-c', '-o', 'something.o'], 1, [], 0, 0),
]:
print(params, opt_level, link_params, closure, has_malloc)
self.clear()
keep_debug = '-g' in params
if has_malloc:
filename = test_file('hello_world_loop_malloc.c')
else:
filename = test_file('hello_world_loop.c')
args = [compiler, filename] + params
print('..', args)
output = self.run_process(args, stdout=PIPE, stderr=PIPE)
assert len(output.stdout) == 0, output.stdout
if link_params is not None:
self.assertExists('something.o', output.stderr)
obj_args = [compiler, 'something.o', '-o', 'something.js'] + link_params
print('....', obj_args)
output = self.run_process(obj_args, stdout=PIPE, stderr=PIPE)
self.assertExists('something.js', output.stderr)
self.assertContained('hello, world!', self.run_js('something.js'))
# Verify optimization level etc. in the generated code
# XXX these are quite sensitive, and will need updating when code generation changes
generated = read_file('something.js')
main = self.get_func(generated, '_main') if 'function _main' in generated else generated
assert 'new Uint16Array' in generated and 'new Uint32Array' in generated, 'typed arrays 2 should be used by default'
assert 'SAFE_HEAP' not in generated, 'safe heap should not be used by default'
assert ': while(' not in main, 'when relooping we also js-optimize, so there should be no labelled whiles'
if closure:
if opt_level == 0:
assert '._main =' in generated, 'closure compiler should have been run'
elif opt_level >= 1:
assert '._main=' in generated, 'closure compiler should have been run (and output should be minified)'
else:
# closure has not been run, we can do some additional checks. TODO: figure out how to do these even with closure
assert '._main = ' not in generated, 'closure compiler should not have been run'
if keep_debug:
assert ('assert(INITIAL_MEMORY >= TOTAL_STACK' in generated) == (opt_level == 0), 'assertions should be in opt == 0'
if 'WASM=0' in params:
looks_unminified = ' = {}' in generated and ' = []' in generated
looks_minified = '={}' in generated and '=[]' and ';var' in generated
assert not (looks_minified and looks_unminified)
if opt_level == 0 or '-g' in params:
assert looks_unminified
elif opt_level >= 2:
assert looks_minified
def test_multiple_sources(self):
# Compiling two sources at a time should work.
cmd = [EMCC, '-c', test_file('twopart_main.cpp'), test_file('twopart_side.c')]
self.run_process(cmd)
# Object files should be generated by default in the current working
# directory, and not alongside the sources.
self.assertExists('twopart_main.o')
self.assertExists('twopart_side.o')
self.assertNotExists(test_file('twopart_main.o'))
self.assertNotExists(test_file('twopart_side.o'))
# But it is an error if '-o' is also specified.
self.clear()
err = self.expect_fail(cmd + ['-o', 'out.o'])
self.assertContained('cannot specify -o with -c/-S/-E/-M and multiple source files', err)
self.assertNotExists('twopart_main.o')
self.assertNotExists('twopart_side.o')
self.assertNotExists(test_file('twopart_main.o'))
self.assertNotExists(test_file('twopart_side.o'))
def test_tsearch(self):
self.do_other_test('test_tsearch.c')
def test_libc_progname(self):
self.do_other_test('test_libc_progname.c')
def test_combining_object_files(self):
# Compiling two files with -c will generate separate object files
self.run_process([EMCC, test_file('twopart_main.cpp'), test_file('twopart_side.c'), '-c'])
self.assertExists('twopart_main.o')
self.assertExists('twopart_side.o')
# Linking with just one of them is expected to fail
err = self.expect_fail([EMCC, 'twopart_main.o'])
self.assertContained('undefined symbol: theFunc', err)
# Linking with both should work
self.run_process([EMCC, 'twopart_main.o', 'twopart_side.o'])
self.assertContained('side got: hello from main, over', self.run_js('a.out.js'))
# Combining object files into another object should also work, using the `-r` flag
err = self.run_process([EMCC, '-r', 'twopart_main.o', 'twopart_side.o', '-o', 'combined.o'], stderr=PIPE).stderr
self.assertNotContained('warning:', err)
# Warn about legecy support for outputing object file without `-r`, `-c` or `-shared`
err = self.run_process([EMCC, 'twopart_main.o', 'twopart_side.o', '-o', 'combined2.o'], stderr=PIPE).stderr
self.assertContained('warning: object file output extension (.o) used for non-object output', err)
# Should be two symbols (and in the wasm backend, also __original_main)
syms = building.llvm_nm('combined.o')
self.assertIn('main', syms['defs'])
self.assertEqual(len(syms['defs']), 3)
self.run_process([EMCC, 'combined.o', '-o', 'combined.o.js'])
self.assertContained('side got: hello from main, over', self.run_js('combined.o.js'))
def test_combining_object_files_from_archive(self):
# Compiling two files with -c will generate separate object files
self.run_process([EMCC, test_file('twopart_main.cpp'), test_file('twopart_side.c'), '-c'])
self.assertExists('twopart_main.o')
self.assertExists('twopart_side.o')
# Combining object files into a library archive should work
self.run_process([EMAR, 'crs', 'combined.a', 'twopart_main.o', 'twopart_side.o'])
self.assertExists('combined.a')
# Combining library archive into an object should yield a valid object, using the `-r` flag
self.run_process([EMXX, '-r', '-o', 'combined.o', '-Wl,--whole-archive', 'combined.a'])
self.assertIsObjectFile('combined.o')
# Should be two symbols (and in the wasm backend, also __original_main)
syms = building.llvm_nm('combined.o')
self.assertIn('main', syms['defs'])
self.assertEqual(len(syms['defs']), 3)
self.run_process([EMXX, 'combined.o', '-o', 'combined.o.js'])
self.assertContained('side got: hello from main, over', self.run_js('combined.o.js'))
def test_js_transform(self):
with open('t.py', 'w') as f:
f.write('''
import sys
f = open(sys.argv[1], 'a')
f.write('transformed!')
f.close()
''')
err = self.run_process([EMCC, test_file('hello_world.c'), '-gsource-map', '--js-transform', '%s t.py' % (PYTHON)], stderr=PIPE).stderr
self.assertContained('disabling source maps because a js transform is being done', err)
self.assertIn('transformed!', read_file('a.out.js'))
def test_js_mem_file(self):
for opts in [0, 1, 2, 3]:
print('mem init in', opts)
self.clear()
self.run_process([EMCC, test_file('hello_world.c'), '-sWASM=0', '-O' + str(opts)])
if opts >= 2:
self.assertExists('a.out.js.mem')
else:
self.assertNotExists('a.out.js.mem')
def test_emcc_asm_v_wasm(self):
for opts in ([], ['-O1'], ['-O2'], ['-O3']):
print('opts', opts)
for mode in ([], ['-sWASM=0']):
self.clear()
wasm = '=0' not in str(mode)
print(' mode', mode, 'wasm?', wasm)
self.run_process([EMCC, test_file('hello_world.c'), '-sENVIRONMENT=node,shell'] + opts + mode)
self.assertExists('a.out.js')
if wasm:
self.assertExists('a.out.wasm')
for engine in config.JS_ENGINES:
print(' engine', engine)
out = self.run_js('a.out.js', engine=engine)
self.assertContained('hello, world!', out)
def test_emcc_cflags(self):
output = self.run_process([EMCC, '--cflags'], stdout=PIPE)
flags = output.stdout.strip()
self.assertContained('-target wasm32-unknown-emscripten', flags)
self.assertContained('--sysroot=', flags)
output = self.run_process([EMXX, '--cflags'], stdout=PIPE)
flags = output.stdout.strip()
self.assertContained('-target wasm32-unknown-emscripten', flags)
self.assertContained('--sysroot=', flags)
# check they work
cmd = [CLANG_CXX, test_file('hello_world.cpp')] + shlex.split(flags.replace('\\', '\\\\')) + ['-c', '-o', 'out.o']
self.run_process(cmd)
self.run_process([EMCC, 'out.o'])
self.assertContained('hello, world!', self.run_js('a.out.js'))
def test_emcc_print_search_dirs(self):
result = self.run_process([EMCC, '-print-search-dirs'], stdout=PIPE, stderr=PIPE)
self.assertContained('programs: =', result.stdout)
self.assertContained('libraries: =', result.stdout)
def test_emar_em_config_flag(self):
# Test that the --em-config flag is accepted but not passed down do llvm-ar.
# We expand this in case the EM_CONFIG is ~/.emscripten (default)
conf = os.path.expanduser(config.EM_CONFIG)
proc = self.run_process([EMAR, '--em-config', conf, '--version'], stdout=PIPE, stderr=PIPE)
self.assertEqual(proc.stderr, "")
self.assertContained('LLVM', proc.stdout)
def test_em_config_missing_arg(self):
out = self.expect_fail([EMCC, '--em-config'])
self.assertContained('error: --em-config must be followed by a filename', out)
def test_emsize(self):
# test binaryen generated by running:
# emcc tests/hello_world.c -Oz --closure 1 -o tests/other/test_emsize.js
expected = read_file(test_file('other/test_emsize.out'))
cmd = [emsize, test_file('other/test_emsize.js')]
for command in [cmd, cmd + ['-format=sysv']]:
output = self.run_process(cmd, stdout=PIPE).stdout
self.assertContained(expected, output)
@is_slow_test
@parameterized({
# ('directory to the test', 'output filename', ['extra args to pass to
# CMake']) Testing all combinations would be too much work and the test
# would take 10 minutes+ to finish (CMake feature detection is slow), so
# combine multiple features into one to try to cover as much as possible
# while still keeping this test in sensible time limit.
'js': ('target_js', 'test_cmake.js', ['-DCMAKE_BUILD_TYPE=Debug']),
'html': ('target_html', 'hello_world_gles.html', ['-DCMAKE_BUILD_TYPE=Release']),
'library': ('target_library', 'libtest_cmake.a', ['-DCMAKE_BUILD_TYPE=MinSizeRel']),
'static_cpp': ('target_library', 'libtest_cmake.a', ['-DCMAKE_BUILD_TYPE=RelWithDebInfo', '-DCPP_LIBRARY_TYPE=STATIC']),
'stdproperty': ('stdproperty', 'helloworld.js', []),
'post_build': ('post_build', 'hello.js', []),
})
def test_cmake(self, test_dir, output_file, cmake_args):
# Test all supported generators.
if WINDOWS:
generators = ['MinGW Makefiles', 'NMake Makefiles']
else:
generators = ['Unix Makefiles', 'Ninja', 'Eclipse CDT4 - Ninja']
configurations = {
'MinGW Makefiles' : {'build' : ['mingw32-make'] }, # noqa
'NMake Makefiles' : {'build' : ['nmake', '/NOLOGO']}, # noqa
'Unix Makefiles' : {'build' : ['make']}, # noqa
'Ninja' : {'build' : ['ninja']}, # noqa
'Eclipse CDT4 - Ninja': {'build' : ['ninja']}, # noqa
}
for generator in generators:
conf = configurations[generator]
if not utils.which(conf['build'][0]):
# Use simple test if applicable
print('Skipping %s test for CMake support; build tool found found: %s.' % (generator, conf['build'][0]))
continue
cmakelistsdir = test_file('cmake', test_dir)
with temp_directory(self.get_dir()) as tempdirname:
# Run Cmake
cmd = [EMCMAKE, 'cmake'] + cmake_args + ['-G', generator, cmakelistsdir]
env = os.environ.copy()
# https://github.com/emscripten-core/emscripten/pull/5145: Check that CMake works even if EMCC_SKIP_SANITY_CHECK=1 is passed.
if test_dir == 'target_html':
env['EMCC_SKIP_SANITY_CHECK'] = '1'
print(str(cmd))
self.run_process(cmd, env=env, stdout=None if EMTEST_BUILD_VERBOSE >= 2 else PIPE, stderr=None if EMTEST_BUILD_VERBOSE >= 1 else PIPE)
# Build
cmd = conf['build']
if EMTEST_BUILD_VERBOSE >= 3 and 'Ninja' not in generator:
cmd += ['VERBOSE=1']
self.run_process(cmd, stdout=None if EMTEST_BUILD_VERBOSE >= 2 else PIPE)
self.assertExists(tempdirname + '/' + output_file, 'building a cmake-generated Makefile failed to produce an output file %s!' % tempdirname + '/' + output_file)
# Run through node, if CMake produced a .js file.
if output_file.endswith('.js'):
ret = self.run_process(config.NODE_JS + [tempdirname + '/' + output_file], stdout=PIPE).stdout
self.assertTextDataIdentical(read_file(cmakelistsdir + '/out.txt').strip(), ret.strip())
if test_dir == 'post_build':
ret = self.run_process(['ctest'], env=env)
# Test that the various CMAKE_xxx_COMPILE_FEATURES that are advertised for the Emscripten
# toolchain match with the actual language features that Clang supports.
# If we update LLVM version and this test fails, copy over the new advertised features from Clang
# and place them to cmake/Modules/Platform/Emscripten.cmake.
@no_windows('Skipped on Windows because CMake does not configure native Clang builds well on Windows.')
def test_cmake_compile_features(self):
with temp_directory(self.get_dir()):
cmd = ['cmake',
'-DCMAKE_C_COMPILER=' + CLANG_CC, '-DCMAKE_C_FLAGS=--target=' + clang_native.get_native_triple(),
'-DCMAKE_CXX_COMPILER=' + CLANG_CXX, '-DCMAKE_CXX_FLAGS=--target=' + clang_native.get_native_triple(),
test_file('cmake/stdproperty')]
print(str(cmd))
native_features = self.run_process(cmd, stdout=PIPE).stdout
with temp_directory(self.get_dir()):
cmd = [EMCMAKE, 'cmake', test_file('cmake/stdproperty')]
print(str(cmd))
emscripten_features = self.run_process(cmd, stdout=PIPE).stdout
native_features = '\n'.join([x for x in native_features.split('\n') if '***' in x])
emscripten_features = '\n'.join([x for x in emscripten_features.split('\n') if '***' in x])
self.assertTextDataIdentical(native_features, emscripten_features)
# Test that the user's explicitly specified generator is always honored
# Internally we override the generator on windows, unles the user specifies one
# Test require Ninja to be installed
def test_cmake_explicit_generator(self):
if not utils.which('ninja'):
self.skipTest('Skipped concat generator argument test since ninja not found')
# use -Wno-dev to suppress an irrelevant warning about the test files only.
cmd = [EMCMAKE, 'cmake', '-GNinja', '-Wno-dev', test_file('cmake/cpp_lib')]
self.run_process(cmd)
self.assertExists(self.get_dir() + '/build.ninja')
# Tests that it's possible to pass C++11 or GNU++11 build modes to CMake by building code that
# needs C++11 (embind)
def test_cmake_with_embind_cpp11_mode(self):
if WINDOWS and not utils.which('ninja'):
self.skipTest('Skipping cmake test on windows since ninja not found')
for args in [[], ['-DNO_GNU_EXTENSIONS=1']]:
self.clear()
# Use ninja generator here since we assume its always installed on our build/test machines.
configure = [EMCMAKE, 'cmake', test_file('cmake/cmake_with_emval')] + args
if WINDOWS:
configure += ['-G', 'Ninja']
print(str(configure))
self.run_process(configure)
build = ['cmake', '--build', '.']
print(str(build))
self.run_process(build)
out = self.run_process(config.NODE_JS + ['cmake_with_emval.js'], stdout=PIPE).stdout
if '-DNO_GNU_EXTENSIONS=1' in args:
self.assertContained('Hello! __STRICT_ANSI__: 1, __cplusplus: 201103', out)
else:
self.assertContained('Hello! __STRICT_ANSI__: 0, __cplusplus: 201103', out)
# Tests that the Emscripten CMake toolchain option
def test_cmake_bitcode_static_libraries(self):
# Test that this option produces an error
err = self.expect_fail([EMCMAKE, 'cmake', test_file('cmake/static_lib'), '-DEMSCRIPTEN_GENERATE_BITCODE_STATIC_LIBRARIES=ON'])
self.assertContained('EMSCRIPTEN_GENERATE_BITCODE_STATIC_LIBRARIES is not compatible with the', err)
@parameterized({
'': ['0'],
'_suffix': ['1'],
})
def test_cmake_static_lib(self, custom):
# Test that one is able to use custom suffixes for static libraries.
# (sometimes projects want to emulate stuff, and do weird things like files
# with ".so" suffix which are in fact either ar archives or bitcode files)
self.run_process([EMCMAKE, 'cmake', f'-DSET_CUSTOM_SUFFIX_IN_PROJECT={custom}', test_file('cmake/static_lib')])
self.run_process(['cmake', '--build', '.'])
if custom == '1':
self.assertTrue(building.is_ar('myprefix_static_lib.somecustomsuffix'))
else:
self.assertTrue(building.is_ar('libstatic_lib.a'))
# Tests that cmake functions which require evaluation via the node runtime run properly with pthreads
def test_cmake_pthreads(self):
self.run_process([EMCMAKE, 'cmake', '-DCMAKE_C_FLAGS=-pthread', test_file('cmake/target_js')])
# Tests that the CMake variable EMSCRIPTEN_VERSION is properly provided to user CMake scripts
def test_cmake_emscripten_version(self):
self.run_process([EMCMAKE, 'cmake', test_file('cmake/emscripten_version')])
def test_cmake_emscripten_system_processor(self):
cmake_dir = test_file('cmake/emscripten_system_processor')
# The default CMAKE_SYSTEM_PROCESSOR is x86.
out = self.run_process([EMCMAKE, 'cmake', cmake_dir], stdout=PIPE).stdout
self.assertContained('CMAKE_SYSTEM_PROCESSOR is x86', out)
# It can be overridden by setting EMSCRIPTEN_SYSTEM_PROCESSOR.
out = self.run_process(
[EMCMAKE, 'cmake', cmake_dir, '-DEMSCRIPTEN_SYSTEM_PROCESSOR=arm'], stdout=PIPE).stdout
self.assertContained('CMAKE_SYSTEM_PROCESSOR is arm', out)
def test_cmake_find_stuff(self):
# Ensure that zlib exists in the sysroot
self.run_process([EMCC, test_file('hello_world.c'), '-sUSE_ZLIB'])
self.run_process([EMCMAKE, 'cmake', test_file('cmake/find_stuff')])
def test_cmake_install(self):
# Build and install a library `foo`
os.mkdir('build1')
self.run_process([EMCMAKE, 'cmake', test_file('cmake/install_lib')], cwd='build1')
self.run_process(['cmake', '--build', 'build1'])
# newer versions of cmake support --install but we currently have 3.10.2 in CI
# so we using `--build --target install` instead.
self.run_process(['cmake', '--build', 'build1', '--target', 'install'])
# Build an application that uses `find_package` to locate and use the above library.
os.mkdir('build2')
self.run_process([EMCMAKE, 'cmake', test_file('cmake/find_package')], cwd='build2')
self.run_process(['cmake', '--build', 'build2'])
self.assertContained('foo: 42\n', self.run_js('build2/Bar.js'))
self.run_process(['cmake', '--build', 'build2', '--target', 'install'])
def test_cmake_find_modules(self):
self.run_process([EMCMAKE, 'cmake', test_file('cmake/find_modules')])
self.run_process(['cmake', '--build', '.'])
output = self.run_js('test_prog.js')
self.assertContained('AL_VERSION: 1.1', output)
self.assertContained('SDL version: 2.0.', output)
def test_system_include_paths(self):
# Verify that all default include paths are within `emscripten/system`
def verify_includes(stderr):
self.assertContained('<...> search starts here:', stderr)
assert stderr.count('End of search list.') == 1, stderr
start = stderr.index('<...> search starts here:')
end = stderr.index('End of search list.')
includes = stderr[start:end]
includes = [i.strip() for i in includes.splitlines()[1:]]
cachedir = os.path.normpath(shared.Cache.dirname)
llvmroot = os.path.normpath(os.path.dirname(config.LLVM_ROOT))
for i in includes:
i = os.path.normpath(i)
# we also allow for the cache include directory and llvm's own builtin includes.
# all other include paths should be inside the sysroot.
if i.startswith(cachedir) or i.startswith(llvmroot):
continue
self.assertContained(path_from_root('system'), i)
err = self.run_process([EMCC, test_file('hello_world.c'), '-v'], stderr=PIPE).stderr
verify_includes(err)
err = self.run_process([EMXX, test_file('hello_world.cpp'), '-v'], stderr=PIPE).stderr
verify_includes(err)
def test_failure_error_code(self):
for compiler in [EMCC, EMXX]:
# Test that if one file is missing from the build, then emcc shouldn't succeed, and shouldn't produce an output file.
self.expect_fail([compiler, test_file('hello_world.c'), 'this_file_is_missing.c', '-o', 'out.js'])
self.assertFalse(os.path.exists('out.js'))
def test_use_cxx(self):
create_file('empty_file', ' ')
dash_xc = self.run_process([EMCC, '-v', '-xc', 'empty_file'], stderr=PIPE).stderr
self.assertNotContained('-x c++', dash_xc)
dash_xcpp = self.run_process([EMCC, '-v', '-xc++', 'empty_file'], stderr=PIPE).stderr
self.assertContained('-x c++', dash_xcpp)
def test_cxx11(self):
for std in ['-std=c++11', '--std=c++11']:
for compiler in [EMCC, EMXX]:
self.run_process([compiler, std, test_file('hello_cxx11.cpp')])
# Regression test for issue #4522: Incorrect CC vs CXX detection
def test_incorrect_c_detection(self):
# This auto-detection only works for the compile phase.
# For linking you need to use `em++` or pass `-x c++`
create_file('test.c', 'foo\n')
for compiler in [EMCC, EMXX]:
self.run_process([compiler, '-c', '-lembind', '--embed-file', 'test.c', test_file('hello_world.cpp')])
def test_odd_suffixes(self):
for suffix in ['CPP', 'c++', 'C++', 'cxx', 'CXX', 'cc', 'CC']:
self.clear()
print(suffix)
shutil.copyfile(test_file('hello_world.c'), 'test.' + suffix)
self.run_process([EMCC, self.in_dir('test.' + suffix)])
self.assertContained('hello, world!', self.run_js('a.out.js'))
for suffix in ['lo']:
self.clear()
print(suffix)
self.run_process([EMCC, test_file('hello_world.c'), '-shared', '-o', 'binary.' + suffix])
self.run_process([EMCC, 'binary.' + suffix])
self.assertContained('hello, world!', self.run_js('a.out.js'))
def test_preprocessed_input(self):
# .i and .ii files are assumed to be the output the pre-processor so clang doesn't add include
# paths. This means we can only compile and run things that don't contain includes.
for suffix in ['.i', '.ii']:
create_file('simple' + suffix, '''
#ifdef __cplusplus
extern "C" {
#endif
int puts(const char *s);
#ifdef __cplusplus
}
#endif
int main() { puts("hello"); }
''')
self.do_runf('simple' + suffix, 'hello')
create_file('with_include' + suffix, '#include <stdio.h>\nint main() { puts("hello"); }')
err = self.expect_fail([EMCC, 'with_include' + suffix])
self.assertContained('fatal error: \'stdio.h\' file not found', err)
def test_wl_linkflags(self):
# Test path -L and -l via -Wl, arguments and -Wl, response files
create_file('main.cpp', '''
extern "C" void printey();
int main() {
printey();
return 0;
}
''')
create_file('libfile.cpp', '''
#include <stdio.h>
extern "C" void printey() {
printf("hello from lib\\n");
}
''')
create_file('linkflags.txt', '''
-L.
-lfoo
''')
self.run_process([EMXX, '-o', 'libfile.o', '-c', 'libfile.cpp'])
self.run_process([EMAR, 'cr', 'libfoo.a', 'libfile.o'])
self.run_process([EMXX, 'main.cpp', '-L.', '-lfoo'])
self.run_process([EMXX, 'main.cpp', '-Wl,-L.', '-Wl,-lfoo'])
self.run_process([EMXX, 'main.cpp', '-Wl,@linkflags.txt'])
def test_l_link(self):
# Linking with -lLIBNAME and -L/DIRNAME should work, also should work with spaces
create_file('main.cpp', '''
extern void printey();
int main() {
printey();
return 0;
}
''')
create_file('libfile.cpp', '''
#include <stdio.h>
void printey() {
printf("hello from lib\\n");
}
''')
ensure_dir('libdir')
libfile = self.in_dir('libdir', 'libfile.so')
aout = 'a.out.js'
def build(path, args):
self.run_process([EMCC, path] + args)
# Test linking the library built here by emcc
build('libfile.cpp', ['-c'])
shutil.move('libfile.o', libfile)
build('main.cpp', ['-L' + 'libdir', '-lfile'])
self.assertContained('hello from lib', self.run_js(aout))
# Also test execution with `-l c` and space-separated library linking syntax
os.remove(aout)
build('libfile.cpp', ['-c', '-l', 'c'])
shutil.move('libfile.o', libfile)
build('main.cpp', ['-L', 'libdir', '-l', 'file'])
self.assertContained('hello from lib', self.run_js(aout))
# Must not leave unneeded linker stubs
self.assertNotExists('a.out')
self.assertNotExists('a.exe')
def test_commons_link(self):
create_file('a.h', r'''
#if !defined(A_H)
#define A_H
extern int foo[8];
#endif
''')
create_file('a.c', r'''
#include "a.h"
int foo[8];
''')
create_file('main.c', r'''
#include <stdio.h>
#include "a.h"
int main() {
printf("|%d|\n", foo[0]);
return 0;
}
''')
self.run_process([EMCC, '-o', 'a.o', '-c', 'a.c'])
self.run_process([EMAR, 'rv', 'library.a', 'a.o'])
self.run_process([EMCC, '-o', 'main.o', '-c', 'main.c'])
self.run_process([EMCC, '-o', 'a.js', 'main.o', 'library.a'])
self.assertContained('|0|', self.run_js('a.js'))
@parameterized({
'expand_symlinks': [[]],
'no_canonical_prefixes': [['-no-canonical-prefixes']],
})
@no_windows('Windows does not support symlinks')
def test_symlink_points_to_bad_suffix(self, flags):
"""Tests compiling a symlink where foobar.c points to foobar.xxx.
In this case, we should always successfully compile the code."""
create_file('foobar.xxx', 'int main(){ return 0; }')
os.symlink('foobar.xxx', 'foobar.c')
self.run_process([EMCC, 'foobar.c', '-c', '-o', 'foobar.o'] + flags)
@no_windows('Windows does not support symlinks')
def test_symlink_has_bad_suffix(self):
"""Tests that compiling foobar.xxx fails even if it points to foobar.c.
"""
create_file('foobar.c', 'int main(){ return 0; }')
os.symlink('foobar.c', 'foobar.xxx')
err = self.expect_fail([EMCC, 'foobar.xxx', '-o', 'foobar.js'])
self.assertContained('unknown file type: foobar.xxx', err)