| #!/usr/bin/env python2 |
| # -*- Mode: python -*- |
| |
| ''' |
| emcc - compiler helper script |
| ============================= |
| |
| emcc is a drop-in replacement for a compiler like gcc or clang. |
| |
| See emcc --help for details. |
| |
| emcc can be influenced by a few environment variables: |
| |
| EMCC_DEBUG - "1" will log out useful information during compilation, as well as |
| save each compiler step as an emcc-* file in the temp dir |
| (by default /tmp/emscripten_temp). "2" will save additional emcc-* |
| steps, that would normally not be separately produced (so this |
| slows down compilation). |
| |
| EMMAKEN_NO_SDK - Will tell emcc *not* to use the emscripten headers. Instead |
| your system headers will be used. |
| |
| EMMAKEN_COMPILER - The compiler to be used, if you don't want the default clang. |
| ''' |
| |
| from tools.toolchain_profiler import ToolchainProfiler |
| if __name__ == '__main__': |
| ToolchainProfiler.record_process_start() |
| |
| import os, sys, shutil, tempfile, subprocess, shlex, time, re, logging, urllib |
| from subprocess import PIPE |
| from tools import shared, jsrun, system_libs |
| from tools.shared import execute, suffix, unsuffixed, unsuffixed_basename, WINDOWS, safe_move |
| from tools.response_file import read_response_file |
| import tools.line_endings |
| |
| # endings = dot + a suffix, safe to test by filename.endswith(endings) |
| C_ENDINGS = ('.c', '.C', '.i') |
| CXX_ENDINGS = ('.cpp', '.cxx', '.cc', '.c++', '.CPP', '.CXX', '.CC', '.C++', '.ii') |
| OBJC_ENDINGS = ('.m', '.mi') |
| OBJCXX_ENDINGS = ('.mm', '.mii') |
| SPECIAL_ENDINGLESS_FILENAMES = ('/dev/null',) |
| |
| SOURCE_ENDINGS = C_ENDINGS + CXX_ENDINGS + OBJC_ENDINGS + OBJCXX_ENDINGS + SPECIAL_ENDINGLESS_FILENAMES |
| C_ENDINGS = C_ENDINGS + SPECIAL_ENDINGLESS_FILENAMES # consider the special endingless filenames like /dev/null to be C |
| |
| BITCODE_ENDINGS = ('.bc', '.o', '.obj', '.lo') |
| DYNAMICLIB_ENDINGS = ('.dylib', '.so') # Windows .dll suffix is not included in this list, since those are never linked to directly on the command line. |
| STATICLIB_ENDINGS = ('.a',) |
| ASSEMBLY_ENDINGS = ('.ll',) |
| HEADER_ENDINGS = ('.h', '.hxx', '.hpp', '.hh', '.H', '.HXX', '.HPP', '.HH') |
| WASM_ENDINGS = ('.wasm', '.wast') |
| |
| SUPPORTED_LINKER_FLAGS = ('--start-group', '-(', '--end-group', '-)') |
| |
| LIB_PREFIXES = ('', 'lib') |
| |
| JS_CONTAINING_SUFFIXES = ('js', 'html') |
| |
| DEFERRED_REPONSE_FILES = ('EMTERPRETIFY_BLACKLIST', 'EMTERPRETIFY_WHITELIST') |
| |
| # Mapping of emcc opt levels to llvm opt levels. We use llvm opt level 3 in emcc opt |
| # levels 2 and 3 (emcc 3 is unsafe opts, so unsuitable for the only level to get |
| # llvm opt level 3, and speed-wise emcc level 2 is already the slowest/most optimizing |
| # level) |
| LLVM_OPT_LEVEL = { |
| 0: 0, |
| 1: 1, |
| 2: 3, |
| 3: 3, |
| } |
| |
| DEBUG = os.environ.get('EMCC_DEBUG') |
| if DEBUG == "0": |
| DEBUG = None |
| |
| TEMP_DIR = os.environ.get('EMCC_TEMP_DIR') |
| LEAVE_INPUTS_RAW = os.environ.get('EMCC_LEAVE_INPUTS_RAW') # Do not compile .ll files into .bc, just compile them with emscripten directly |
| # Not recommended, this is mainly for the test runner, or if you have some other |
| # specific need. |
| # One major limitation with this mode is that libc and libc++ cannot be |
| # added in. Also, LLVM optimizations will not be done, nor dead code elimination |
| # If emcc is running with LEAVE_INPUTS_RAW and then launches an emcc to build something like the struct info, then we don't want |
| # LEAVE_INPUTS_RAW to be active in that emcc subprocess. |
| if LEAVE_INPUTS_RAW: |
| del os.environ['EMCC_LEAVE_INPUTS_RAW'] |
| AUTODEBUG = os.environ.get('EMCC_AUTODEBUG') # If set to 1, we will run the autodebugger (the automatic debugging tool, see tools/autodebugger). |
| # Note that this will disable inclusion of libraries. This is useful because including |
| # dlmalloc makes it hard to compare native and js builds |
| EMCC_CFLAGS = os.environ.get('EMCC_CFLAGS') # Additional compiler flags that we treat as if they were passed to us on the commandline |
| |
| # Target options |
| final = None |
| target = None |
| script_src = None # if set, we have a script to load with a src attribute |
| script_inline = None # if set, we have the contents of a script to write inline in a script |
| |
| # |
| # Main run() function |
| # |
| def run(): |
| global final, target, script_src, script_inline |
| |
| if DEBUG: logging.warning('invocation: ' + ' '.join(sys.argv) + (' + ' + EMCC_CFLAGS if EMCC_CFLAGS else '') + ' (in ' + os.getcwd() + ')') |
| if EMCC_CFLAGS: sys.argv.extend(shlex.split(EMCC_CFLAGS)) |
| |
| if DEBUG and LEAVE_INPUTS_RAW: logging.warning('leaving inputs raw') |
| |
| stdout = PIPE if not DEBUG else None # suppress output of child processes |
| stderr = PIPE if not DEBUG else None # unless we are in DEBUG mode |
| |
| EMCC_CXX = '--emscripten-cxx' in sys.argv |
| sys.argv = filter(lambda x: x != '--emscripten-cxx', sys.argv) |
| |
| if len(sys.argv) <= 1 or ('--help' not in sys.argv and len(sys.argv) >= 2 and sys.argv[1] != '--version'): |
| shared.check_sanity(force=DEBUG) |
| |
| misc_temp_files = shared.configuration.get_temp_files() |
| |
| # Handle some global flags |
| |
| if len(sys.argv) == 1: |
| logging.warning('no input files') |
| exit(1) |
| |
| # read response files very early on |
| response_file = True |
| while response_file: |
| response_file = None |
| for index in range(1, len(sys.argv)): |
| if sys.argv[index][0] == '@': |
| # found one, loop again next time |
| response_file = True |
| extra_args = read_response_file(sys.argv[index]) |
| # slice in extra_args in place of the response file arg |
| sys.argv[index:index+1] = extra_args |
| break |
| |
| if len(sys.argv) == 1 or '--help' in sys.argv: |
| # Documentation for emcc and its options must be updated in: |
| # site/source/docs/tools_reference/emcc.rst |
| # A prebuilt local version of the documentation is available at: |
| # site/build/text/docs/tools_reference/emcc.txt |
| # (it is read from there and printed out when --help is invoked) |
| # You can also build docs locally as HTML or other formats in site/ |
| # An online HTML version (which may be of a different version of Emscripten) |
| # is up at http://kripken.github.io/emscripten-site/docs/tools_reference/emcc.html |
| |
| print '''%s |
| |
| ------------------------------------------------------------------ |
| |
| emcc: supported targets: llvm bitcode, javascript, NOT elf |
| (autoconf likes to see elf above to enable shared object support) |
| ''' % (open(shared.path_from_root('site', 'build', 'text', 'docs', 'tools_reference', 'emcc.txt')).read()) |
| exit(0) |
| |
| elif sys.argv[1] == '--version': |
| revision = '(unknown revision)' |
| here = os.getcwd() |
| os.chdir(shared.path_from_root()) |
| try: |
| revision = execute(['git', 'show'], stdout=PIPE, stderr=PIPE)[0].split('\n')[0] |
| except: |
| pass |
| finally: |
| os.chdir(here) |
| print '''emcc (Emscripten gcc/clang-like replacement) %s (%s) |
| 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. |
| ''' % (shared.EMSCRIPTEN_VERSION, revision) |
| exit(0) |
| |
| elif len(sys.argv) == 2 and sys.argv[1] == '-v': # -v with no inputs |
| # autoconf likes to see 'GNU' in the output to enable shared object support |
| print 'emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) %s' % shared.EMSCRIPTEN_VERSION |
| code = subprocess.call([shared.CLANG, '-v']) |
| shared.check_sanity(force=True) |
| exit(code) |
| |
| elif '-dumpmachine' in sys.argv: |
| print shared.get_llvm_target() |
| exit(0) |
| |
| elif '--cflags' in sys.argv: |
| # fake running the command, to see the full args we pass to clang |
| debug_env = os.environ.copy() |
| debug_env['EMCC_DEBUG'] = '1' |
| args = filter(lambda x: x != '--cflags', sys.argv) |
| with misc_temp_files.get_file(suffix='.o') as temp_target: |
| input_file = 'hello_world.c' |
| out, err = subprocess.Popen([shared.PYTHON] + args + [shared.path_from_root('tests', input_file), '-c', '-o', temp_target], stderr=subprocess.PIPE, env=debug_env).communicate() |
| lines = filter(lambda x: shared.CLANG_CC in x and input_file in x, err.split(os.linesep)) |
| line = lines[0] |
| assert 'running:' in line |
| parts = line.split(' ')[2:] |
| parts = filter(lambda x: x != '-c' and x != '-o' and input_file not in x and temp_target not in x and '-emit-llvm' not in x, parts) |
| print ' '.join(parts) |
| exit(0) |
| |
| def is_minus_s_for_emcc(newargs, i): |
| assert newargs[i] == '-s' |
| if i+1 < len(newargs) and '=' in newargs[i+1] and not newargs[i+1].startswith('-'): # -s OPT=VALUE is for us, -s by itself is a linker option |
| return True |
| else: |
| logging.debug('treating -s as linker option and not as -s OPT=VALUE for js compilation') |
| return False |
| |
| # If this is a configure-type thing, do not compile to JavaScript, instead use clang |
| # to compile to a native binary (using our headers, so things make sense later) |
| CONFIGURE_CONFIG = (os.environ.get('EMMAKEN_JUST_CONFIGURE') or 'conftest.c' in sys.argv) and not os.environ.get('EMMAKEN_JUST_CONFIGURE_RECURSE') |
| CMAKE_CONFIG = 'CMakeFiles/cmTryCompileExec.dir' in ' '.join(sys.argv)# or 'CMakeCCompilerId' in ' '.join(sys.argv) |
| if CONFIGURE_CONFIG or CMAKE_CONFIG: |
| debug_configure = 0 # XXX use this to debug configure stuff. ./configure's generally hide our normal output including stderr so we write to a file |
| |
| # Whether we fake configure tests using clang - the local, native compiler - or not. if not we generate JS and use node with a shebang |
| # Beither approach is perfect, you can try both, but may need to edit configure scripts in some cases |
| # By default we configure in js, which can break on local filesystem access, etc., but is otherwise accurate so we |
| # disable this if we think we have to. A value of '2' here will force JS checks in all cases. In summary: |
| # 0 - use native compilation for configure checks |
| # 1 - use js when we think it will work |
| # 2 - always use js for configure checks |
| use_js = int(os.environ.get('EMCONFIGURE_JS') or 1) |
| |
| if debug_configure: |
| tempout = '/tmp/emscripten_temp/out' |
| if not os.path.exists(tempout): |
| open(tempout, 'w').write('//\n') |
| |
| src = None |
| for arg in sys.argv: |
| if arg.endswith(SOURCE_ENDINGS): |
| try: |
| src = open(arg).read() |
| if debug_configure: open(tempout, 'a').write('============= ' + arg + '\n' + src + '\n=============\n\n') |
| except: |
| pass |
| elif arg.endswith('.s'): |
| if debug_configure: open(tempout, 'a').write('(compiling .s assembly, must use clang\n') |
| if use_js == 1: use_js = 0 |
| elif arg == '-E' or arg == '-M' or arg == '-MM': |
| if use_js == 1: use_js = 0 |
| |
| if src: |
| if 'fopen' in src and '"w"' in src: |
| if use_js == 1: use_js = 0 # we cannot write to files from js! |
| if debug_configure: open(tempout, 'a').write('Forcing clang since uses fopen to write\n') |
| |
| compiler = os.environ.get('CONFIGURE_CC') or (shared.CLANG if not use_js else shared.EMCC) # if CONFIGURE_CC is defined, use that. let's you use local gcc etc. if you need that |
| if not ('CXXCompiler' in ' '.join(sys.argv) or EMCC_CXX): |
| compiler = shared.to_cc(compiler) |
| |
| def filter_emscripten_options(argv): |
| idx = 0 |
| skip_next = False |
| for el in argv: |
| if skip_next: |
| skip_next = False |
| idx += 1 |
| continue |
| if not use_js and el == '-s' and is_minus_s_for_emcc(argv, idx): # skip -s X=Y if not using js for configure |
| skip_next = True |
| else: |
| yield el |
| idx += 1 |
| |
| if compiler == shared.EMCC: compiler = [shared.PYTHON, shared.EMCC] |
| else: compiler = [compiler] |
| cmd = compiler + list(filter_emscripten_options(sys.argv[1:])) |
| if not use_js: |
| cmd += shared.EMSDK_OPTS + ['-D__EMSCRIPTEN__'] |
| # The preprocessor define EMSCRIPTEN is deprecated. Don't pass it to code in strict mode. Code should use the define __EMSCRIPTEN__ instead. |
| if not shared.Settings.STRICT: |
| cmd += ['-DEMSCRIPTEN'] |
| if use_js: cmd += ['-s', 'ERROR_ON_UNDEFINED_SYMBOLS=1'] # configure tests should fail when an undefined symbol exists |
| |
| logging.debug('just configuring: ' + ' '.join(cmd)) |
| if debug_configure: open(tempout, 'a').write('emcc, just configuring: ' + ' '.join(cmd) + '\n\n') |
| |
| if not use_js: |
| exit(subprocess.call(cmd)) |
| else: |
| only_object = '-c' in cmd |
| for i in range(len(cmd)-1): |
| if cmd[i] == '-o': |
| if not only_object: |
| cmd[i+1] += '.js' |
| target = cmd[i+1] |
| break |
| if not target: |
| target = 'a.out.js' |
| os.environ['EMMAKEN_JUST_CONFIGURE_RECURSE'] = '1' |
| ret = subprocess.call(cmd) |
| os.environ['EMMAKEN_JUST_CONFIGURE_RECURSE'] = '' |
| if not os.path.exists(target): exit(ret) # note that emcc -c will cause target to have the wrong value here; |
| # but then, we don't care about bitcode outputs anyhow, below, so |
| # skipping to exit(ret) is fine |
| if target.endswith('.js'): |
| shutil.copyfile(target, target[:-3]) |
| target = target[:-3] |
| if not target.endswith(BITCODE_ENDINGS): |
| src = open(target).read() |
| full_node = ' '.join(shared.NODE_JS) |
| if os.path.sep not in full_node: |
| full_node = '/usr/bin/' + full_node # TODO: use whereis etc. And how about non-*NIX? |
| open(target, 'w').write('#!' + full_node + '\n' + src) # add shebang |
| import stat |
| try: |
| os.chmod(target, stat.S_IMODE(os.stat(target).st_mode) | stat.S_IXUSR) # make executable |
| except: |
| pass # can fail if e.g. writing the executable to /dev/null |
| exit(ret) |
| |
| if os.environ.get('EMMAKEN_COMPILER'): |
| CXX = os.environ['EMMAKEN_COMPILER'] |
| else: |
| CXX = shared.CLANG |
| |
| CC = shared.to_cc(CXX) |
| |
| # If we got here from a redirection through emmakenxx.py, then force a C++ compiler here |
| if EMCC_CXX: |
| CC = CXX |
| |
| CC_ADDITIONAL_ARGS = shared.COMPILER_OPTS |
| |
| EMMAKEN_CFLAGS = os.environ.get('EMMAKEN_CFLAGS') |
| if EMMAKEN_CFLAGS: sys.argv += shlex.split(EMMAKEN_CFLAGS) |
| |
| # ---------------- Utilities --------------- |
| |
| seen_names = {} |
| def uniquename(name): |
| if name not in seen_names: |
| seen_names[name] = str(len(seen_names)) |
| return unsuffixed(name) + '_' + seen_names[name] + (('.' + suffix(name)) if suffix(name) else '') |
| |
| # ---------------- End configs ------------- |
| |
| if len(sys.argv) == 1 or sys.argv[1] in ['x', 't']: |
| # noop ar |
| logging.debug('just ar') |
| sys.exit(0) |
| |
| # Check if a target is specified |
| target = None |
| for i in range(len(sys.argv)-1): |
| if sys.argv[i].startswith('-o='): |
| raise Exception('Invalid syntax: do not use -o=X, use -o X') |
| |
| if sys.argv[i] == '-o': |
| target = sys.argv[i+1] |
| sys.argv = sys.argv[:i] + sys.argv[i+2:] |
| break |
| |
| if target and target.endswith(WASM_ENDINGS): |
| logging.warning('output file "%s" has a wasm suffix, but we cannot emit wasm by itself. specify an output file with suffix .js or .html, and a wasm file will be created on the side' % target) |
| sys.exit(1) |
| |
| specified_target = target |
| target = specified_target if specified_target is not None else 'a.out.js' # specified_target is the user-specified one, target is what we will generate |
| target_basename = unsuffixed_basename(target) |
| |
| if '.' in target: |
| final_suffix = target.split('.')[-1] |
| else: |
| final_suffix = '' |
| |
| if TEMP_DIR: |
| temp_dir = TEMP_DIR |
| if os.path.exists(temp_dir): |
| shutil.rmtree(temp_dir) # clear it |
| os.makedirs(temp_dir) |
| else: |
| temp_root = shared.TEMP_DIR |
| if not os.path.exists(temp_root): |
| os.makedirs(temp_root) |
| temp_dir = tempfile.mkdtemp(dir=temp_root) |
| |
| def in_temp(name): |
| return os.path.join(temp_dir, os.path.basename(name)) |
| |
| def in_directory(root, child): |
| # make both path absolute |
| root = os.path.realpath(root) |
| child = os.path.realpath(child) |
| |
| # return true, if the common prefix of both is equal to directory |
| # e.g. /a/b/c/d.rst and directory is /a/b, the common prefix is /a/b |
| return os.path.commonprefix([root, child]) == root |
| |
| # Parses the essential suffix of a filename, discarding Unix-style version numbers in the name. For example for 'libz.so.1.2.8' returns '.so' |
| def filename_type_suffix(filename): |
| for i in reversed(filename.split('.')[1:]): |
| if not i.isdigit(): |
| return i |
| return '' |
| |
| def filename_type_ending(filename): |
| if filename in SPECIAL_ENDINGLESS_FILENAMES: |
| return filename |
| suffix = filename_type_suffix(filename) |
| return '' if not suffix else ('.' + suffix) |
| |
| # Log out times for emcc stages |
| class TimeLogger: |
| last = time.time() |
| |
| @staticmethod |
| def update(): |
| TimeLogger.last = time.time() |
| |
| def log_time(name): |
| if DEBUG: |
| now = time.time() |
| logging.debug('emcc step "%s" took %.2f seconds', name, now - TimeLogger.last) |
| TimeLogger.update() |
| |
| use_cxx = True |
| |
| try: |
| with ToolchainProfiler.profile_block('parse arguments and setup'): |
| ## Parse args |
| |
| newargs = sys.argv[1:] |
| |
| opt_level = 0 |
| debug_level = 0 |
| shrink_level = 0 |
| requested_debug = '' |
| profiling = False |
| profiling_funcs = False |
| tracing = False |
| emit_symbol_map = False |
| js_opts = None |
| force_js_opts = False |
| llvm_opts = None |
| llvm_lto = None |
| default_cxx_std = '-std=c++03' # Enforce a consistent C++ standard when compiling .cpp files, if user does not specify one on the cmdline. |
| use_closure_compiler = None |
| js_transform = None |
| pre_js = '' |
| post_js = '' |
| preload_files = [] |
| embed_files = [] |
| exclude_files = [] |
| ignore_dynamic_linking = False |
| shell_path = shared.path_from_root('src', 'shell.html') |
| js_libraries = [] |
| bind = False |
| emrun = False |
| cpu_profiler = False |
| thread_profiler = False |
| memory_profiler = False |
| save_bc = False |
| memory_init_file = None |
| use_preload_cache = False |
| no_heap_copy = False |
| use_preload_plugins = False |
| proxy_to_worker = False |
| default_object_extension = '.o' |
| valid_abspaths = [] |
| separate_asm = False |
| cfi = False |
| # Specifies the line ending format to use for all generated text files. |
| # Defaults to using the native EOL on each platform (\r\n on Windows, \n on Linux&OSX) |
| output_eol = os.linesep |
| |
| def is_valid_abspath(path_name): |
| # Any path that is underneath the emscripten repository root must be ok. |
| if shared.path_from_root().replace('\\', '/') in path_name.replace('\\', '/'): |
| return True |
| |
| for valid_abspath in valid_abspaths: |
| if in_directory(valid_abspath, path_name): |
| return True |
| return False |
| |
| def check_bad_eq(arg): |
| assert '=' not in arg, 'Invalid parameter (do not use "=" with "--" options)' |
| |
| # Defaults to not showing absolute path warnings |
| absolute_warning_shown = True |
| |
| for i in range(len(newargs)): |
| # Scan for path warning flag in advance from other cmdline flags, so that it works even if -I or -L directives are present before this. |
| if newargs[i] == '-Wwarn-absolute-paths': |
| newargs[i] = '' |
| absolute_warning_shown = False |
| elif newargs[i] == '-Wno-warn-absolute-paths': |
| newargs[i] = '' |
| absolute_warning_shown = True |
| elif newargs[i] in ['-l', '-L', '-I']: |
| # Scan for individual -l/-L/-I arguments and concatenate the next arg on if there is no suffix |
| newargs[i] += newargs[i+1] |
| newargs[i+1] = '' |
| |
| settings_changes = [] |
| |
| def validate_arg_level(level_string, max_level, err_msg): |
| try: |
| level = int(level_string) |
| assert 0 <= level <= max_level |
| except: |
| raise Exception(err_msg) |
| return level |
| |
| def detect_fixed_language_mode(args): |
| check_next = False |
| for item in args: |
| if check_next: |
| if item in ("c++", "c"): |
| return True |
| else: |
| check_next = False |
| if item.startswith("-x"): |
| lmode = item[2:] if len(item) > 2 else None |
| if lmode in ("c++", "c"): |
| return True |
| else: |
| check_next = True |
| continue |
| return False |
| |
| has_fixed_language_mode = detect_fixed_language_mode(newargs) |
| should_exit = False |
| |
| for i in range(len(newargs)): |
| newargs[i] = newargs[i].strip() # On Windows Vista (and possibly others), excessive spaces in the command line leak into the items in this array, so trim e.g. 'foo.cpp ' -> 'foo.cpp' |
| if newargs[i].startswith('-O'): |
| # Let -O default to -O2, which is what gcc does. |
| requested_level = newargs[i][2:] or '2' |
| if requested_level == 's': |
| llvm_opts = ['-Os'] |
| requested_level = 2 |
| shrink_level = 1 |
| settings_changes.append('INLINING_LIMIT=50') |
| elif requested_level == 'z': |
| llvm_opts = ['-Oz'] |
| requested_level = 2 |
| shrink_level = 2 |
| settings_changes.append('INLINING_LIMIT=25') |
| opt_level = validate_arg_level(requested_level, 3, 'Invalid optimization level: ' + newargs[i]) |
| elif newargs[i].startswith('--js-opts'): |
| check_bad_eq(newargs[i]) |
| js_opts = eval(newargs[i+1]) |
| if js_opts: force_js_opts = True |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--llvm-opts'): |
| check_bad_eq(newargs[i]) |
| llvm_opts = eval(newargs[i+1]) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--llvm-lto'): |
| check_bad_eq(newargs[i]) |
| llvm_lto = eval(newargs[i+1]) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--closure'): |
| check_bad_eq(newargs[i]) |
| use_closure_compiler = int(newargs[i+1]) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--js-transform'): |
| check_bad_eq(newargs[i]) |
| js_transform = newargs[i+1] |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--pre-js'): |
| check_bad_eq(newargs[i]) |
| pre_js += open(newargs[i+1]).read() + '\n' |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--post-js'): |
| check_bad_eq(newargs[i]) |
| post_js += open(newargs[i+1]).read() + '\n' |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--minify'): |
| check_bad_eq(newargs[i]) |
| assert newargs[i+1] == '0', '0 is the only supported option for --minify; 1 has been deprecated' |
| debug_level = max(1, debug_level) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('-g'): |
| requested_level = newargs[i][2:] or '3' |
| debug_level = validate_arg_level(requested_level, 4, 'Invalid debug level: ' + newargs[i]) |
| requested_debug = newargs[i] |
| newargs[i] = '' |
| elif newargs[i] == '-profiling' or newargs[i] == '--profiling': |
| debug_level = 2 |
| profiling = True |
| newargs[i] = '' |
| elif newargs[i] == '-profiling-funcs' or newargs[i] == '--profiling-funcs': |
| profiling_funcs = True |
| newargs[i] = '' |
| elif newargs[i] == '--tracing' or newargs[i] == '--memoryprofiler': |
| if newargs[i] == '--memoryprofiler': |
| memory_profiler = True |
| tracing = True |
| newargs[i] = '' |
| newargs.append('-D__EMSCRIPTEN_TRACING__=1') |
| settings_changes.append("EMSCRIPTEN_TRACING=1") |
| js_libraries.append(shared.path_from_root('src', 'library_trace.js')) |
| elif newargs[i] == '--emit-symbol-map': |
| emit_symbol_map = True |
| newargs[i] = '' |
| elif newargs[i] == '--bind': |
| bind = True |
| newargs[i] = '' |
| js_libraries.append(shared.path_from_root('src', 'embind', 'emval.js')) |
| js_libraries.append(shared.path_from_root('src', 'embind', 'embind.js')) |
| if default_cxx_std: |
| default_cxx_std = '-std=c++11' # Force C++11 for embind code, but only if user has not explicitly overridden a standard. |
| elif newargs[i].startswith('-std=') or newargs[i].startswith('--std='): |
| default_cxx_std = '' # User specified a standard to use, clear Emscripten from specifying it. |
| elif newargs[i].startswith('--embed-file'): |
| check_bad_eq(newargs[i]) |
| embed_files.append(newargs[i+1]) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--preload-file'): |
| check_bad_eq(newargs[i]) |
| preload_files.append(newargs[i+1]) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--exclude-file'): |
| check_bad_eq(newargs[i]) |
| exclude_files.append(newargs[i+1]) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--use-preload-cache'): |
| use_preload_cache = True |
| newargs[i] = '' |
| elif newargs[i].startswith('--no-heap-copy'): |
| no_heap_copy = True |
| newargs[i] = '' |
| elif newargs[i].startswith('--use-preload-plugins'): |
| use_preload_plugins = True |
| newargs[i] = '' |
| elif newargs[i] == '--ignore-dynamic-linking': |
| ignore_dynamic_linking = True |
| newargs[i] = '' |
| elif newargs[i] == '-v': |
| shared.COMPILER_OPTS += ['-v'] |
| shared.check_sanity(force=True) |
| newargs[i] = '' |
| elif newargs[i].startswith('--shell-file'): |
| check_bad_eq(newargs[i]) |
| shell_path = newargs[i+1] |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i].startswith('--js-library'): |
| check_bad_eq(newargs[i]) |
| js_libraries.append(newargs[i+1]) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i] == '--remove-duplicates': |
| logging.warning('--remove-duplicates is deprecated as it is no longer needed. If you cannot link without it, file a bug with a testcase') |
| newargs[i] = '' |
| elif newargs[i] == '--jcache': |
| logging.error('jcache is no longer supported') |
| newargs[i] = '' |
| elif newargs[i] == '--cache': |
| check_bad_eq(newargs[i]) |
| os.environ['EM_CACHE'] = newargs[i+1] |
| shared.reconfigure_cache() |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i] == '--clear-cache': |
| logging.info('clearing cache as requested by --clear-cache') |
| shared.Cache.erase() |
| shared.check_sanity(force=True) # this is a good time for a sanity check |
| should_exit = True |
| elif newargs[i] == '--clear-ports': |
| logging.info('clearing ports and cache as requested by --clear-ports') |
| system_libs.Ports.erase() |
| shared.Cache.erase() |
| shared.check_sanity(force=True) # this is a good time for a sanity check |
| should_exit = True |
| elif newargs[i] == '--show-ports': |
| system_libs.show_ports() |
| should_exit = True |
| elif newargs[i] == '--save-bc': |
| check_bad_eq(newargs[i]) |
| save_bc = newargs[i+1] |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i] == '--memory-init-file': |
| check_bad_eq(newargs[i]) |
| memory_init_file = int(newargs[i+1]) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i] == '--proxy-to-worker': |
| proxy_to_worker = True |
| newargs[i] = '' |
| elif newargs[i] == '--valid-abspath': |
| valid_abspaths.append(newargs[i+1]) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| elif newargs[i] == '--separate-asm': |
| separate_asm = True |
| newargs[i] = '' |
| elif newargs[i].startswith(('-I', '-L')): |
| path_name = newargs[i][2:] |
| if not absolute_warning_shown and os.path.isabs(path_name) and not is_valid_abspath(path_name): |
| logging.warning('-I or -L of an absolute path "' + newargs[i] + '" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript).') # Of course an absolute path to a non-system-specific library or header is fine, and you can ignore this warning. The danger are system headers that are e.g. x86 specific and nonportable. The emscripten bundled headers are modified to be portable, local system ones are generally not |
| absolute_warning_shown = True |
| elif newargs[i] == '--emrun': |
| emrun = True |
| newargs[i] = '' |
| elif newargs[i] == '--cpuprofiler': |
| cpu_profiler = True |
| newargs[i] = '' |
| elif newargs[i] == '--threadprofiler': |
| thread_profiler = True |
| settings_changes.append('PTHREADS_PROFILING=1') |
| newargs[i] = '' |
| elif newargs[i] == '--default-obj-ext': |
| newargs[i] = '' |
| default_object_extension = newargs[i+1] |
| if not default_object_extension.startswith('.'): |
| default_object_extension = '.' + default_object_extension |
| newargs[i+1] = '' |
| elif newargs[i] == '-msse': |
| newargs.append('-D__SSE__=1') |
| newargs[i] = '' |
| elif newargs[i] == '-msse2': |
| newargs.append('-D__SSE__=1') |
| newargs.append('-D__SSE2__=1') |
| newargs[i] = '' |
| elif newargs[i] == '-msse3': |
| newargs.append('-D__SSE__=1') |
| newargs.append('-D__SSE2__=1') |
| newargs.append('-D__SSE3__=1') |
| newargs[i] = '' |
| elif newargs[i] == '-mssse3': |
| newargs.append('-D__SSE__=1') |
| newargs.append('-D__SSE2__=1') |
| newargs.append('-D__SSE3__=1') |
| newargs.append('-D__SSSE3__=1') |
| newargs[i] = '' |
| elif newargs[i] == '-msse4.1': |
| newargs.append('-D__SSE__=1') |
| newargs.append('-D__SSE2__=1') |
| newargs.append('-D__SSE3__=1') |
| newargs.append('-D__SSSE3__=1') |
| newargs.append('-D__SSE4_1__=1') |
| newargs[i] = '' |
| elif newargs[i].startswith("-fsanitize=cfi"): |
| cfi = True |
| elif newargs[i] == "--output_eol": |
| if newargs[i+1].lower() == 'windows': |
| output_eol = '\r\n' |
| elif newargs[i+1].lower() == 'linux': |
| output_eol = '\n' |
| else: |
| logging.error('Invalid value "' + newargs[i+1] + '" to --output_eol!') |
| exit(1) |
| newargs[i] = '' |
| newargs[i+1] = '' |
| |
| if should_exit: |
| sys.exit(0) |
| |
| newargs = [arg for arg in newargs if arg is not ''] |
| |
| for i in range(0, len(newargs)): |
| arg = newargs[i] |
| if not arg.startswith('-'): |
| if arg.endswith(C_ENDINGS + OBJC_ENDINGS): |
| use_cxx = False |
| |
| if not use_cxx: |
| default_cxx_std = '' # Compiling C code with .c files, don't enforce a default C++ std. |
| |
| call = CXX if use_cxx else CC |
| |
| # If user did not specify a default -std for C++ code, specify the emscripten default. |
| if default_cxx_std: |
| newargs = newargs + [default_cxx_std] |
| |
| if emrun: |
| pre_js += open(shared.path_from_root('src', 'emrun_prejs.js')).read() + '\n' |
| post_js += open(shared.path_from_root('src', 'emrun_postjs.js')).read() + '\n' |
| |
| if cpu_profiler: |
| post_js += open(shared.path_from_root('src', 'cpuprofiler.js')).read() + '\n' |
| |
| if memory_profiler: |
| post_js += open(shared.path_from_root('src', 'memoryprofiler.js')).read() + '\n' |
| |
| if thread_profiler: |
| post_js += open(shared.path_from_root('src', 'threadprofiler.js')).read() + '\n' |
| |
| if js_opts is None: js_opts = opt_level >= 2 |
| if llvm_opts is None: llvm_opts = LLVM_OPT_LEVEL[opt_level] |
| if memory_init_file is None: memory_init_file = opt_level >= 2 |
| |
| # TODO: support source maps with js_transform |
| if js_transform and debug_level >= 4: |
| logging.warning('disabling source maps because a js transform is being done') |
| debug_level = 3 |
| |
| if DEBUG: start_time = time.time() # done after parsing arguments, which might affect debug state |
| |
| for i in range(len(newargs)): |
| if newargs[i] == '-s': |
| if is_minus_s_for_emcc(newargs, i): |
| key = newargs[i+1] |
| settings_changes.append(key) |
| newargs[i] = newargs[i+1] = '' |
| assert key != 'WASM_BACKEND', 'do not set -s WASM_BACKEND, instead set EMCC_WASM_BACKEND=1 in the environment' |
| newargs = [arg for arg in newargs if arg is not ''] |
| |
| # Find input files |
| |
| # These three arrays are used to store arguments of different types for |
| # type-specific processing. In order to shuffle the arguments back together |
| # after processing, all of these arrays hold tuples (original_index, value). |
| # Note that the index part of the tuple can have a fractional part for input |
| # arguments that expand into multiple processed arguments, as in -Wl,-f1,-f2. |
| input_files = [] |
| libs = [] |
| link_flags = [] |
| |
| # All of the above arg lists entries contain indexes into the full argument |
| # list. In order to add extra implicit args (embind.cc, etc) below, we keep a |
| # counter for the next index that should be used. |
| next_arg_index = len(newargs) |
| |
| has_source_inputs = False |
| has_header_inputs = False |
| lib_dirs = [shared.path_from_root('system', 'local', 'lib'), |
| shared.path_from_root('system', 'lib')] |
| for i in range(len(newargs)): # find input files XXX this a simple heuristic. we should really analyze based on a full understanding of gcc params, |
| # right now we just assume that what is left contains no more |-x OPT| things |
| arg = newargs[i] |
| |
| if i > 0: |
| prev = newargs[i-1] |
| if prev in ['-MT', '-MF', '-MQ', '-D', '-U', '-o', '-x', '-Xpreprocessor', '-include', '-imacros', '-idirafter', '-iprefix', '-iwithprefix', '-iwithprefixbefore', '-isysroot', '-imultilib', '-A', '-isystem', '-iquote', '-install_name', '-compatibility_version', '-current_version', '-I', '-L', '-include-pch']: continue # ignore this gcc-style argument |
| |
| if os.path.islink(arg) and os.path.realpath(arg).endswith(SOURCE_ENDINGS + BITCODE_ENDINGS + DYNAMICLIB_ENDINGS + ASSEMBLY_ENDINGS + HEADER_ENDINGS): |
| arg = os.path.realpath(arg) |
| |
| if not arg.startswith('-'): |
| if not os.path.exists(arg): |
| logging.error('%s: No such file or directory ("%s" was expected to be an input file, based on the commandline arguments provided)', arg, arg) |
| exit(1) |
| |
| arg_ending = filename_type_ending(arg) |
| if arg_ending.endswith(SOURCE_ENDINGS + BITCODE_ENDINGS + DYNAMICLIB_ENDINGS + ASSEMBLY_ENDINGS + HEADER_ENDINGS) or shared.Building.is_ar(arg): # we already removed -o <target>, so all these should be inputs |
| newargs[i] = '' |
| if arg_ending.endswith(SOURCE_ENDINGS): |
| input_files.append((i, arg)) |
| has_source_inputs = True |
| elif arg_ending.endswith(HEADER_ENDINGS): |
| input_files.append((i, arg)) |
| has_header_inputs = True |
| elif arg_ending.endswith(ASSEMBLY_ENDINGS) or shared.Building.is_bitcode(arg): # this should be bitcode, make sure it is valid |
| input_files.append((i, arg)) |
| elif arg_ending.endswith(STATICLIB_ENDINGS + DYNAMICLIB_ENDINGS): |
| # if it's not, and it's a library, just add it to libs to find later |
| l = unsuffixed_basename(arg) |
| for prefix in LIB_PREFIXES: |
| if not prefix: continue |
| if l.startswith(prefix): |
| l = l[len(prefix):] |
| break |
| libs.append((i, l)) |
| newargs[i] = '' |
| else: |
| logging.warning(arg + ' is not valid LLVM bitcode') |
| elif arg_ending.endswith(STATICLIB_ENDINGS): |
| if not shared.Building.is_ar(arg): |
| if shared.Building.is_bitcode(arg): |
| logging.error(arg + ': File has a suffix of a static library ' + str(STATICLIB_ENDINGS) + ', but instead is an LLVM bitcode file! When linking LLVM bitcode files, use one of the suffixes ' + str(BITCODE_ENDINGS)) |
| else: |
| logging.error(arg + ': Unknown format, not a static library!') |
| exit(1) |
| else: |
| if has_fixed_language_mode: |
| newargs[i] = '' |
| input_files.append((i, arg)) |
| has_source_inputs = True |
| else: |
| logging.error(arg + ": Input file has an unknown suffix, don't know what to do with it!") |
| exit(1) |
| elif arg.startswith('-L'): |
| lib_dirs.append(arg[2:]) |
| newargs[i] = '' |
| elif arg.startswith('-l'): |
| libs.append((i, arg[2:])) |
| newargs[i] = '' |
| elif arg.startswith('-Wl,'): |
| # Multiple comma separated link flags can be specified. Create fake |
| # fractional indices for these: -Wl,a,b,c,d at index 4 becomes: |
| # (4, a), (4.25, b), (4.5, c), (4.75, d) |
| link_flags_to_add = arg.split(',')[1:] |
| for flag_index, flag in enumerate(link_flags_to_add): |
| # Only keep flags that shared.Building.link knows how to deal with. |
| # We currently can't handle flags with options (like |
| # -Wl,-rpath,/bin:/lib, where /bin:/lib is an option for the -rpath |
| # flag). |
| if flag in SUPPORTED_LINKER_FLAGS: |
| link_flags.append((i + float(flag_index) / len(link_flags_to_add), flag)) |
| newargs[i] = '' |
| |
| original_input_files = input_files[:] |
| |
| newargs = [arg for arg in newargs if arg is not ''] |
| |
| # -c means do not link in gcc, and for us, the parallel is to not go all the way to JS, but stop at bitcode |
| has_dash_c = '-c' in newargs |
| if has_dash_c: |
| assert has_source_inputs or has_header_inputs, 'Must have source code or header inputs to use -c' |
| target = target_basename + '.o' |
| final_suffix = 'o' |
| if '-E' in newargs: |
| final_suffix = 'eout' # not bitcode, not js; but just result from preprocessing stage of the input file |
| if '-M' in newargs or '-MM' in newargs: |
| final_suffix = 'mout' # not bitcode, not js; but just dependency rule of the input file |
| final_ending = ('.' + final_suffix) if len(final_suffix) > 0 else '' |
| |
| # target is now finalized, can finalize other _target s |
| js_target = unsuffixed(target) + '.js' |
| |
| asm_target = js_target[:-3] + '.asm.js' # might not be used, but if it is, this is the name |
| wasm_text_target = asm_target.replace('.asm.js', '.wast') # ditto, might not be used |
| wasm_binary_target = asm_target.replace('.asm.js', '.wasm') # ditto, might not be used |
| |
| if final_suffix == 'html' and not separate_asm and ('PRECISE_F32=2' in settings_changes or 'USE_PTHREADS=2' in settings_changes): |
| separate_asm = True |
| logging.warning('forcing separate asm output (--separate-asm), because -s PRECISE_F32=2 or -s USE_PTHREADS=2 was passed.') |
| if separate_asm: |
| shared.Settings.SEPARATE_ASM = os.path.basename(asm_target) |
| |
| if 'EMCC_STRICT' in os.environ: |
| shared.Settings.STRICT = os.environ.get('EMCC_STRICT') != '0' |
| |
| # Libraries are searched before settings_changes are applied, so apply the value for STRICT and ERROR_ON_MISSING_LIBRARIES from |
| # command line already now. |
| |
| def get_last_setting_change(setting): |
| return ([None] + filter(lambda x: x.startswith(setting + '='), settings_changes))[-1] |
| |
| strict_cmdline = get_last_setting_change('STRICT') |
| if strict_cmdline: |
| shared.Settings.STRICT = int(strict_cmdline[len('STRICT='):]) |
| |
| if shared.Settings.STRICT: |
| shared.Settings.ERROR_ON_UNDEFINED_SYMBOLS = 1 |
| shared.Settings.ERROR_ON_MISSING_LIBRARIES = 1 |
| |
| error_on_missing_libraries_cmdline = get_last_setting_change('ERROR_ON_MISSING_LIBRARIES') |
| if error_on_missing_libraries_cmdline: |
| shared.Settings.ERROR_ON_MISSING_LIBRARIES = int(error_on_missing_libraries_cmdline[len('ERROR_ON_MISSING_LIBRARIES='):]) |
| |
| system_js_libraries = [] |
| |
| # Find library files |
| for i, lib in libs: |
| logging.debug('looking for library "%s"', lib) |
| found = False |
| for prefix in LIB_PREFIXES: |
| for suff in STATICLIB_ENDINGS + DYNAMICLIB_ENDINGS: |
| name = prefix + lib + suff |
| for lib_dir in lib_dirs: |
| path = os.path.join(lib_dir, name) |
| if os.path.exists(path): |
| logging.debug('found library "%s" at %s', lib, path) |
| input_files.append((i, path)) |
| found = True |
| break |
| if found: break |
| if found: break |
| if not found: |
| system_js_libraries += shared.Building.path_to_system_js_libraries(lib) |
| |
| # Certain linker flags imply some link libraries to be pulled in by default. |
| system_js_libraries += shared.Building.path_to_system_js_libraries_for_settings(settings_changes) |
| |
| settings_changes.append('SYSTEM_JS_LIBRARIES="' + ','.join(system_js_libraries) + '"') |
| |
| # If not compiling to JS, then we are compiling to an intermediate bitcode objects or library, so |
| # ignore dynamic linking, since multiple dynamic linkings can interfere with each other |
| if not filename_type_suffix(target) in JS_CONTAINING_SUFFIXES or ignore_dynamic_linking: |
| def check(input_file): |
| if filename_type_ending(input_file) in DYNAMICLIB_ENDINGS: |
| if not ignore_dynamic_linking: logging.warning('ignoring dynamic library %s because not compiling to JS or HTML, remember to link it when compiling to JS or HTML at the end', os.path.basename(input_file)) |
| return False |
| else: |
| return True |
| input_files = [(i, input_file) for (i, input_file) in input_files if check(input_file)] |
| |
| if len(input_files) == 0: |
| logging.error('no input files\nnote that input files without a known suffix are ignored, make sure your input files end with one of: ' + str(SOURCE_ENDINGS + BITCODE_ENDINGS + DYNAMICLIB_ENDINGS + STATICLIB_ENDINGS + ASSEMBLY_ENDINGS + HEADER_ENDINGS)) |
| exit(1) |
| |
| newargs = CC_ADDITIONAL_ARGS + newargs |
| |
| if separate_asm and final_suffix != 'html': |
| logging.warning("--separate-asm works best when compiling to HTML. otherwise, you must yourself load the '.asm.js' file that is emitted separately, and must do so before loading the main '.js` file") |
| |
| # If we are using embind and generating JS, now is the time to link in bind.cpp |
| if bind and final_suffix in JS_CONTAINING_SUFFIXES: |
| input_files.append((next_arg_index, shared.path_from_root('system', 'lib', 'embind', 'bind.cpp'))) |
| next_arg_index += 1 |
| |
| # Apply optimization level settings |
| shared.Settings.apply_opt_level(opt_level=opt_level, shrink_level=shrink_level, noisy=True) |
| |
| if os.environ.get('EMCC_FAST_COMPILER') == '0': |
| logging.critical('Non-fastcomp compiler is no longer available, please use fastcomp or an older version of emscripten') |
| sys.exit(1) |
| |
| # Set ASM_JS default here so that we can override it from the command line. |
| shared.Settings.ASM_JS = 1 if opt_level > 0 else 2 |
| |
| # Apply -s settings in newargs here (after optimization levels, so they can override them) |
| for change in settings_changes: |
| key, value = change.split('=') |
| original_exported_response = False |
| |
| if value[0] == '@': |
| if key not in DEFERRED_REPONSE_FILES: |
| if key == 'EXPORTED_FUNCTIONS': |
| original_exported_response = value |
| value = open(value[1:]).read() |
| else: |
| value = '"' + value + '"' |
| else: |
| value = value.replace('\\', '\\\\') |
| exec 'shared.Settings.' + key + ' = ' + value in globals(), locals() |
| if key == 'EXPORTED_FUNCTIONS': |
| # used for warnings in emscripten.py |
| shared.Settings.ORIGINAL_EXPORTED_FUNCTIONS = original_exported_response or shared.Settings.EXPORTED_FUNCTIONS[:] |
| |
| # -s ASSERTIONS=1 implies the heaviest stack overflow check mode. Set the implication here explicitly to avoid having to |
| # do preprocessor "#if defined(ASSERTIONS) || defined(STACK_OVERFLOW_CHECK)" in .js files, which is not supported. |
| if shared.Settings.ASSERTIONS: |
| shared.Settings.STACK_OVERFLOW_CHECK = 2 |
| |
| if shared.get_llvm_target() == shared.WASM_TARGET: |
| shared.Settings.WASM_BACKEND = 1 |
| |
| if not shared.Settings.STRICT: |
| # The preprocessor define EMSCRIPTEN is deprecated. Don't pass it to code in strict mode. Code should use the define __EMSCRIPTEN__ instead. |
| shared.COMPILER_OPTS += ['-DEMSCRIPTEN'] |
| |
| # The system include path system/include/emscripten/ is deprecated, i.e. instead of #include <emscripten.h>, one should pass in #include <emscripten/emscripten.h>. |
| # This path is not available in Emscripten strict mode. |
| if shared.USE_EMSDK: |
| shared.C_INCLUDE_PATHS += [shared.path_from_root('system', 'include', 'emscripten')] |
| |
| # Use settings |
| |
| try: |
| assert shared.Settings.ASM_JS > 0, 'ASM_JS must be enabled in fastcomp' |
| assert shared.Settings.SAFE_HEAP in [0, 1], 'safe heap must be 0 or 1 in fastcomp' |
| assert shared.Settings.UNALIGNED_MEMORY == 0, 'forced unaligned memory not supported in fastcomp' |
| assert shared.Settings.FORCE_ALIGNED_MEMORY == 0, 'forced aligned memory is not supported in fastcomp' |
| assert shared.Settings.PGO == 0, 'pgo not supported in fastcomp' |
| assert shared.Settings.QUANTUM_SIZE == 4, 'altering the QUANTUM_SIZE is not supported' |
| except Exception, e: |
| logging.error('Compiler settings are incompatible with fastcomp. You can fall back to the older compiler core, although that is not recommended, see http://kripken.github.io/emscripten-site/docs/building_from_source/LLVM-Backend.html') |
| raise e |
| |
| assert not shared.Settings.PGO, 'cannot run PGO in ASM_JS mode' |
| |
| if shared.Settings.SAFE_HEAP: |
| if not js_opts: |
| logging.debug('enabling js opts for SAFE_HEAP') |
| js_opts = True |
| force_js_opts = True |
| |
| if debug_level > 1 and use_closure_compiler: |
| logging.warning('disabling closure because debug info was requested') |
| use_closure_compiler = False |
| |
| assert not (shared.Settings.NO_DYNAMIC_EXECUTION and use_closure_compiler), 'cannot have both NO_DYNAMIC_EXECUTION and closure compiler enabled at the same time' |
| |
| if use_closure_compiler: |
| shared.Settings.USE_CLOSURE_COMPILER = use_closure_compiler |
| if not shared.check_closure_compiler(): |
| logging.error('fatal: closure compiler is not configured correctly') |
| sys.exit(1) |
| if use_closure_compiler == 2 and shared.Settings.ASM_JS == 1: |
| logging.warning('not all asm.js optimizations are possible with --closure 2, disabling those - your code will be run more slowly') |
| shared.Settings.ASM_JS = 2 |
| |
| if shared.Settings.MAIN_MODULE: |
| assert not shared.Settings.SIDE_MODULE |
| if shared.Settings.MAIN_MODULE != 2: |
| shared.Settings.INCLUDE_FULL_LIBRARY = 1 |
| elif shared.Settings.SIDE_MODULE: |
| assert not shared.Settings.MAIN_MODULE |
| memory_init_file = False # memory init file is not supported with side modules, must be executable synchronously (for dlopen) |
| |
| if shared.Settings.MAIN_MODULE or shared.Settings.SIDE_MODULE: |
| assert shared.Settings.ASM_JS, 'module linking requires asm.js output (-s ASM_JS=1)' |
| if shared.Settings.MAIN_MODULE != 2: |
| shared.Settings.LINKABLE = 1 |
| shared.Settings.RELOCATABLE = 1 |
| shared.Settings.PRECISE_I64_MATH = 1 # other might use precise math, we need to be able to print it |
| assert not use_closure_compiler, 'cannot use closure compiler on shared modules' |
| assert not shared.Settings.ALLOW_MEMORY_GROWTH, 'memory growth is not supported with shared modules yet' |
| |
| if shared.Settings.EMULATE_FUNCTION_POINTER_CASTS: |
| shared.Settings.ALIASING_FUNCTION_POINTERS = 0 |
| |
| if shared.Settings.SPLIT_MEMORY: |
| assert shared.Settings.SPLIT_MEMORY > shared.Settings.TOTAL_STACK, 'SPLIT_MEMORY must be at least TOTAL_STACK (stack must fit in first chunk)' |
| assert shared.Settings.SPLIT_MEMORY & (shared.Settings.SPLIT_MEMORY-1) == 0, 'SPLIT_MEMORY must be a power of 2' |
| if shared.Settings.ASM_JS == 1: |
| logging.warning('not all asm.js optimizations are possible with SPLIT_MEMORY, disabling those') |
| shared.Settings.ASM_JS = 2 |
| if shared.Settings.SAFE_HEAP: |
| shared.Settings.SAFE_HEAP = 0 |
| shared.Settings.SAFE_SPLIT_MEMORY = 1 # we use our own infrastructure |
| assert not shared.Settings.RELOCATABLE, 'no SPLIT_MEMORY with RELOCATABLE' |
| assert not shared.Settings.USE_PTHREADS, 'no SPLIT_MEMORY with pthreads' |
| if not js_opts: |
| js_opts = True |
| logging.debug('enabling js opts for SPLIT_MEMORY') |
| force_js_opts = True |
| if use_closure_compiler: |
| use_closure_compiler = False |
| logging.warning('cannot use closure compiler on split memory, for now, disabling') |
| |
| if shared.Settings.STB_IMAGE and final_suffix in JS_CONTAINING_SUFFIXES: |
| input_files.append((next_arg_index, shared.path_from_root('third_party', 'stb_image.c'))) |
| next_arg_index += 1 |
| shared.Settings.EXPORTED_FUNCTIONS += ['_stbi_load', '_stbi_load_from_memory', '_stbi_image_free'] |
| # stb_image 2.x need to have STB_IMAGE_IMPLEMENTATION defined to include the implementation when compiling |
| newargs.append('-DSTB_IMAGE_IMPLEMENTATION') |
| |
| if shared.Settings.ASMFS and final_suffix in JS_CONTAINING_SUFFIXES: |
| input_files.append((next_arg_index, shared.path_from_root('system', 'lib', 'fetch', 'asmfs.cpp'))) |
| newargs.append('-D__EMSCRIPTEN_ASMFS__=1') |
| next_arg_index += 1 |
| shared.Settings.NO_FILESYSTEM = 1 |
| shared.Settings.FETCH = 1 |
| if not shared.Settings.USE_PTHREADS: |
| logging.error('-s ASMFS=1 requires either -s USE_PTHREADS=1 or -s USE_PTHREADS=2 to be set!') |
| sys.exit(1) |
| |
| if shared.Settings.FETCH and final_suffix in JS_CONTAINING_SUFFIXES: |
| input_files.append((next_arg_index, shared.path_from_root('system', 'lib', 'fetch', 'emscripten_fetch.cpp'))) |
| next_arg_index += 1 |
| js_libraries.append(shared.path_from_root('src', 'library_fetch.js')) |
| |
| forced_stdlibs = [] |
| if shared.Settings.DEMANGLE_SUPPORT: |
| shared.Settings.EXPORTED_FUNCTIONS += ['___cxa_demangle'] |
| forced_stdlibs += ['libcxxabi'] |
| |
| if not shared.Settings.ONLY_MY_CODE: |
| if type(shared.Settings.EXPORTED_FUNCTIONS) in (list, tuple): |
| # always need malloc and free to be kept alive and exported, for internal use and other modules |
| for required_export in ['_malloc', '_free']: |
| if required_export not in shared.Settings.EXPORTED_FUNCTIONS: |
| shared.Settings.EXPORTED_FUNCTIONS.append(required_export) |
| else: |
| logging.debug('using response file for EXPORTED_FUNCTIONS, make sure it includes _malloc and _free') |
| |
| assert not (bind and shared.Settings.NO_DYNAMIC_EXECUTION), 'NO_DYNAMIC_EXECUTION disallows embind' |
| |
| assert not (shared.Settings.NO_DYNAMIC_EXECUTION and shared.Settings.RELOCATABLE), 'cannot have both NO_DYNAMIC_EXECUTION and RELOCATABLE enabled at the same time, since RELOCATABLE needs to eval()' |
| |
| if shared.Settings.RELOCATABLE: |
| assert shared.Settings.GLOBAL_BASE < 1 |
| if shared.Settings.EMULATED_FUNCTION_POINTERS == 0: |
| shared.Settings.EMULATED_FUNCTION_POINTERS = 2 # by default, use optimized function pointer emulation |
| shared.Settings.ERROR_ON_UNDEFINED_SYMBOLS = shared.Settings.WARN_ON_UNDEFINED_SYMBOLS = 0 |
| if not shared.Settings.SIDE_MODULE: |
| shared.Settings.EXPORT_ALL = 1 |
| |
| if shared.Settings.EMTERPRETIFY: |
| shared.Settings.FINALIZE_ASM_JS = 0 |
| #shared.Settings.GLOBAL_BASE = 8*256 # keep enough space at the bottom for a full stack frame, for z-interpreter |
| shared.Settings.SIMPLIFY_IFS = 0 # this is just harmful for emterpreting |
| shared.Settings.EXPORTED_FUNCTIONS += ['emterpret'] |
| if not js_opts: |
| logging.debug('enabling js opts for EMTERPRETIFY') |
| js_opts = True |
| force_js_opts = True |
| assert use_closure_compiler is not 2, 'EMTERPRETIFY requires valid asm.js, and is incompatible with closure 2 which disables that' |
| |
| if shared.Settings.DEAD_FUNCTIONS: |
| if not js_opts: |
| logging.debug('enabling js opts for DEAD_FUNCTIONS') |
| js_opts = True |
| force_js_opts = True |
| |
| if proxy_to_worker: |
| shared.Settings.PROXY_TO_WORKER = 1 |
| |
| if use_preload_plugins or len(preload_files) > 0 or len(embed_files) > 0: |
| # if we include any files, or intend to use preload plugins, then we definitely need filesystem support |
| shared.Settings.FORCE_FILESYSTEM = 1 |
| |
| if proxy_to_worker or use_preload_plugins: |
| shared.Settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE += ['$Browser'] |
| |
| if not shared.Settings.NO_FILESYSTEM and not shared.Settings.ONLY_MY_CODE: |
| shared.Settings.EXPORTED_FUNCTIONS += ['___errno_location'] # so FS can report errno back to C |
| if not shared.Settings.NO_EXIT_RUNTIME: |
| shared.Settings.EXPORTED_FUNCTIONS += ['_fflush'] # to flush the streams on FS quit |
| # TODO this forces 4 syscalls, maybe we should avoid it? |
| |
| if shared.Settings.USE_PTHREADS: |
| if not any(s.startswith('PTHREAD_POOL_SIZE=') for s in settings_changes): |
| settings_changes.append('PTHREAD_POOL_SIZE=0') |
| js_libraries.append(shared.path_from_root('src', 'library_pthread.js')) |
| newargs.append('-D__EMSCRIPTEN_PTHREADS__=1') |
| shared.Settings.FORCE_FILESYSTEM = 1 # proxying of utime requires the filesystem |
| else: |
| js_libraries.append(shared.path_from_root('src', 'library_pthread_stub.js')) |
| |
| if shared.Settings.USE_PTHREADS: |
| if shared.Settings.LINKABLE: |
| logging.error('-s LINKABLE=1 is not supported with -s USE_PTHREADS>0!') |
| exit(1) |
| if shared.Settings.SIDE_MODULE: |
| logging.error('-s SIDE_MODULE=1 is not supported with -s USE_PTHREADS>0!') |
| exit(1) |
| if shared.Settings.MAIN_MODULE: |
| logging.error('-s MAIN_MODULE=1 is not supported with -s USE_PTHREADS>0!') |
| exit(1) |
| if shared.Settings.EMTERPRETIFY: |
| logging.error('-s EMTERPRETIFY=1 is not supported with -s USE_PTHREADS>0!') |
| exit(1) |
| |
| if shared.Settings.OUTLINING_LIMIT: |
| if not js_opts: |
| logging.debug('enabling js opts as optional functionality implemented as a js opt was requested') |
| js_opts = True |
| force_js_opts = True |
| |
| if shared.Settings.EVAL_CTORS: |
| # this option is not a js optimizer pass, but does run the js optimizer internally, so |
| # we need to generate proper code for that |
| shared.Settings.RUNNING_JS_OPTS = 1 |
| |
| if shared.Settings.WASM: |
| shared.Settings.BINARYEN = 1 # these are synonyms |
| |
| if shared.Settings.WASM_BACKEND: |
| js_opts = None |
| shared.Settings.BINARYEN = 1 |
| # Static linking is tricky with LLVM, since e.g. memset might not be used from libc, |
| # but be used as an intrinsic, and codegen will generate a libc call from that intrinsic |
| # *after* static linking would have thought it is all in there. In asm.js this is not an |
| # issue as we do JS linking anyhow, and have asm.js-optimized versions of all the LLVM |
| # intrinsics. But for wasm, we need a better solution. For now, just pin stuff. |
| shared.Settings.EXPORTED_FUNCTIONS += ['_memcpy', '_memmove', '_memset'] |
| # to bootstrap struct_info, we need binaryen |
| os.environ['EMCC_WASM_BACKEND_BINARYEN'] = '1' |
| |
| if shared.Settings.BINARYEN: |
| shared.Settings.ASM_JS = 2 # when targeting wasm, we use a wasm Memory, but that is not compatible with asm.js opts |
| debug_level = max(1, debug_level) # keep whitespace readable, for asm.js parser simplicity |
| shared.Settings.GLOBAL_BASE = 1024 # leave some room for mapping global vars |
| assert not shared.Settings.SPLIT_MEMORY, 'WebAssembly does not support split memory' |
| assert not shared.Settings.INCLUDE_FULL_LIBRARY, 'The WebAssembly libc overlaps with JS libs, so INCLUDE_FULL_LIBRARY does not just work (FIXME)' |
| # if root was not specified in -s, it might be fixed in ~/.emscripten, copy from there |
| if not shared.Settings.BINARYEN_ROOT: |
| try: |
| shared.Settings.BINARYEN_ROOT = shared.BINARYEN_ROOT |
| except: |
| pass |
| # default precise-f32 to on, since it works well in wasm |
| # also always use f32s when asm.js is not in the picture |
| if ('PRECISE_F32=0' not in settings_changes and 'PRECISE_F32=2' not in settings_changes) or 'asmjs' not in shared.Settings.BINARYEN_METHOD: |
| shared.Settings.PRECISE_F32 = 1 |
| if js_opts and not force_js_opts and 'asmjs' not in shared.Settings.BINARYEN_METHOD: |
| js_opts = None |
| logging.debug('asm.js opts not forced by user or an option that depends them, and we do not intend to run the asm.js, so disabling and leaving opts to the binaryen optimizer') |
| if use_closure_compiler: |
| logging.warning('closure compiler is known to have issues with binaryen (FIXME)') |
| # for simplicity, we always have a mem init file, which may also be imported into the wasm module. |
| # * if we also supported js mem inits we'd have 4 modes |
| # * and js mem inits are useful for avoiding a side file, but the wasm module avoids that anyhow |
| memory_init_file = True |
| |
| if shared.Settings.ALLOW_MEMORY_GROWTH and shared.Settings.ASM_JS == 1: |
| # this is an issue in asm.js, but not wasm |
| if not shared.Settings.WASM or 'asmjs' in shared.Settings.BINARYEN_METHOD: |
| logging.warning('not all asm.js optimizations are possible with ALLOW_MEMORY_GROWTH, disabling those') |
| shared.Settings.ASM_JS = 2 # memory growth does not validate as asm.js http://discourse.wicg.io/t/request-for-comments-switching-resizing-heaps-in-asm-js/641/23 |
| |
| if js_opts: |
| shared.Settings.RUNNING_JS_OPTS = 1 |
| |
| if shared.Settings.CYBERDWARF: |
| newargs.append('-g') |
| shared.Settings.BUNDLED_CD_DEBUG_FILE = target + ".cd" |
| js_libraries.append(shared.path_from_root('src', 'library_cyberdwarf.js')) |
| js_libraries.append(shared.path_from_root('src', 'library_debugger_toolkit.js')) |
| |
| if tracing: |
| if shared.Settings.ALLOW_MEMORY_GROWTH: |
| shared.Settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE += ['emscripten_trace_report_memory_layout'] |
| |
| if shared.Settings.ONLY_MY_CODE: |
| shared.Settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE = [] |
| separate_asm = True |
| shared.Settings.FINALIZE_ASM_JS = False |
| |
| if shared.Settings.GLOBAL_BASE < 0: |
| shared.Settings.GLOBAL_BASE = 8 # default if nothing else sets it |
| |
| if shared.Settings.WASM_BACKEND: |
| if shared.Settings.SIMD: |
| newargs.append('-msimd128') |
| else: |
| # We leave the -O option in place so that the clang front-end runs in that |
| # optimization mode, but we disable the actual optimization passes, as we'll |
| # run them separately. |
| if opt_level > 0: |
| newargs.append('-mllvm') |
| newargs.append('-disable-llvm-optzns') |
| |
| shared.Settings.EMSCRIPTEN_VERSION = shared.EMSCRIPTEN_VERSION |
| shared.Settings.OPT_LEVEL = opt_level |
| shared.Settings.DEBUG_LEVEL = debug_level |
| |
| ## Compile source code to bitcode |
| |
| logging.debug('compiling to bitcode') |
| |
| temp_files = [] |
| |
| # exit block 'parse arguments and setup' |
| log_time('parse arguments and setup') |
| |
| with ToolchainProfiler.profile_block('bitcodeize inputs'): |
| # Precompiled headers support |
| if has_header_inputs: |
| headers = [header for _, header in input_files] |
| for header in headers: |
| assert header.endswith(HEADER_ENDINGS), 'if you have one header input, we assume you want to precompile headers, and cannot have source files or other inputs as well: ' + str(headers) + ' : ' + header |
| args = newargs + shared.EMSDK_CXX_OPTS + headers |
| if specified_target: |
| args += ['-o', specified_target] |
| args = system_libs.process_args(args, shared.Settings) |
| logging.debug("running (for precompiled headers): " + call + ' ' + ' '.join(args)) |
| execute([call] + args) # let compiler frontend print directly, so colors are saved (PIPE kills that) |
| sys.exit(0) |
| |
| def get_bitcode_file(input_file): |
| if final_suffix not in JS_CONTAINING_SUFFIXES: |
| # no need for a temp file, just emit to the right place |
| if len(input_files) == 1: |
| # can just emit directly to the target |
| if specified_target: |
| if specified_target.endswith('/') or specified_target.endswith('\\') or os.path.isdir(specified_target): |
| return os.path.join(specified_target, os.path.basename(unsuffixed(input_file))) + default_object_extension |
| return specified_target |
| return unsuffixed(input_file) + final_ending |
| else: |
| if has_dash_c: return unsuffixed(input_file) + default_object_extension |
| return in_temp(unsuffixed(uniquename(input_file)) + default_object_extension) |
| |
| # Request LLVM debug info if explicitly specified, or building bitcode with -g, or if building a source all the way to JS with -g |
| if debug_level >= 4 or ((final_suffix not in JS_CONTAINING_SUFFIXES or (has_source_inputs and final_suffix in JS_CONTAINING_SUFFIXES)) and requested_debug == '-g'): |
| if debug_level == 4 or not (final_suffix in JS_CONTAINING_SUFFIXES and js_opts): # do not save llvm debug info if js optimizer will wipe it out anyhow (but if source maps are used, keep it) |
| newargs.append('-g') # preserve LLVM debug info |
| debug_level = 4 |
| |
| # Bitcode args generation code |
| def get_bitcode_args(input_files): |
| file_ending = filename_type_ending(input_files[0]) |
| args = [call] + newargs + input_files |
| if file_ending.endswith(CXX_ENDINGS): |
| args += shared.EMSDK_CXX_OPTS |
| if not shared.Building.can_inline(): |
| args.append('-fno-inline-functions') |
| args = system_libs.process_args(args, shared.Settings) |
| return args |
| |
| # -E preprocessor-only support |
| if '-E' in newargs or '-M' in newargs or '-MM' in newargs: |
| input_files = map(lambda x: x[1], input_files) |
| cmd = get_bitcode_args(input_files) |
| if specified_target: |
| cmd += ['-o', specified_target] |
| # Do not compile, but just output the result from preprocessing stage or output the dependency rule. Warning: clang and gcc behave differently with -MF! (clang seems to not recognize it) |
| logging.debug(('just preprocessor ' if '-E' in newargs else 'just dependencies: ') + ' '.join(cmd)) |
| exit(subprocess.call(cmd)) |
| |
| def compile_source_file(i, input_file): |
| logging.debug('compiling source file: ' + input_file) |
| output_file = get_bitcode_file(input_file) |
| temp_files.append((i, output_file)) |
| args = get_bitcode_args([input_file]) + ['-emit-llvm', '-c', '-o', output_file] |
| logging.debug("running: " + ' '.join(args)) |
| execute(args) # let compiler frontend print directly, so colors are saved (PIPE kills that) |
| if not os.path.exists(output_file): |
| logging.error('compiler frontend failed to generate LLVM bitcode, halting') |
| sys.exit(1) |
| |
| # First, generate LLVM bitcode. For each input file, we get base.o with bitcode |
| for i, input_file in input_files: |
| file_ending = filename_type_ending(input_file) |
| if file_ending.endswith(SOURCE_ENDINGS): |
| compile_source_file(i, input_file) |
| else: # bitcode |
| if file_ending.endswith(BITCODE_ENDINGS): |
| logging.debug('using bitcode file: ' + input_file) |
| temp_files.append((i, input_file)) |
| elif file_ending.endswith(DYNAMICLIB_ENDINGS) or shared.Building.is_ar(input_file): |
| logging.debug('using library file: ' + input_file) |
| temp_files.append((i, input_file)) |
| elif file_ending.endswith(ASSEMBLY_ENDINGS): |
| if not LEAVE_INPUTS_RAW: |
| logging.debug('assembling assembly file: ' + input_file) |
| temp_file = in_temp(unsuffixed(uniquename(input_file)) + '.o') |
| shared.Building.llvm_as(input_file, temp_file) |
| temp_files.append((i, temp_file)) |
| else: |
| if has_fixed_language_mode: |
| compile_source_file(i, input_file) |
| else: |
| logging.error(input_file + ': Unknown file suffix when compiling to LLVM bitcode!') |
| sys.exit(1) |
| |
| # exit block 'bitcodeize inputs' |
| log_time('bitcodeize inputs') |
| |
| with ToolchainProfiler.profile_block('process inputs'): |
| if not LEAVE_INPUTS_RAW and not shared.Settings.WASM_BACKEND: |
| assert len(temp_files) == len(input_files) |
| |
| # Optimize source files |
| if llvm_opts > 0: |
| for pos, (_, input_file) in enumerate(input_files): |
| file_ending = filename_type_ending(input_file) |
| if file_ending.endswith(SOURCE_ENDINGS): |
| temp_file = temp_files[pos][1] |
| logging.debug('optimizing %s', input_file) |
| #if DEBUG: shutil.copyfile(temp_file, os.path.join(shared.configuration.CANONICAL_TEMP_DIR, 'to_opt.bc')) # useful when LLVM opt aborts |
| new_temp_file = in_temp(unsuffixed(uniquename(temp_file)) + '.o') |
| shared.Building.llvm_opt(temp_file, llvm_opts, new_temp_file) |
| temp_files[pos] = (temp_files[pos][0], new_temp_file) |
| |
| # Decide what we will link |
| linker_inputs = [val for _, val in sorted(temp_files + link_flags)] |
| |
| # If we were just asked to generate bitcode, stop there |
| if final_suffix not in JS_CONTAINING_SUFFIXES: |
| if not specified_target: |
| assert len(temp_files) == len(input_files) |
| for i in range(len(input_files)): |
| safe_move(temp_files[i][1], unsuffixed_basename(input_files[i][1]) + final_ending) |
| else: |
| if len(input_files) == 1: |
| _, input_file = input_files[0] |
| _, temp_file = temp_files[0] |
| bitcode_target = specified_target if specified_target else unsuffixed_basename(input_file) + final_ending |
| if temp_file != input_file: |
| safe_move(temp_file, bitcode_target) |
| else: |
| shutil.copyfile(temp_file, bitcode_target) |
| temp_output_base = unsuffixed(temp_file) |
| if os.path.exists(temp_output_base + '.d'): |
| # There was a .d file generated, from -MD or -MMD and friends, save a copy of it to where the output resides, |
| # adjusting the target name away from the temporary file name to the specified target. |
| # It will be deleted with the rest of the temporary directory. |
| deps = open(temp_output_base + '.d').read() |
| deps = deps.replace(temp_output_base + default_object_extension, specified_target) |
| with open(os.path.join(os.path.dirname(specified_target), os.path.basename(unsuffixed(input_file) + '.d')), "w") as out_dep: |
| out_dep.write(deps) |
| else: |
| assert len(original_input_files) == 1 or not has_dash_c, 'fatal error: cannot specify -o with -c with multiple files' + str(sys.argv) + ':' + str(original_input_files) |
| # We have a specified target (-o <target>), which is not JavaScript or HTML, and |
| # we have multiple files: Link them |
| logging.debug('link: ' + str(linker_inputs) + specified_target) |
| # Sort arg tuples and pass the extracted values to link. |
| shared.Building.link(linker_inputs, specified_target) |
| logging.debug('stopping at bitcode') |
| if final_suffix.lower() in ['so', 'dylib', 'dll']: |
| logging.warning('Dynamic libraries (.so, .dylib, .dll) are currently not supported by Emscripten. For build system emulation purposes, Emscripten' |
| + ' will now generate a static library file (.bc) with the suffix \'.' + final_suffix + '\'. For best practices,' |
| + ' please adapt your build system to directly generate a static LLVM bitcode library by setting the output suffix to \'.bc.\')') |
| exit(0) |
| |
| # exit block 'process inputs' |
| log_time('process inputs') |
| |
| ## Continue on to create JavaScript |
| |
| with ToolchainProfiler.profile_block('calculate system libraries'): |
| logging.debug('will generate JavaScript') |
| |
| extra_files_to_link = [] |
| |
| if not LEAVE_INPUTS_RAW and \ |
| not shared.Settings.BUILD_AS_SHARED_LIB and \ |
| not shared.Settings.BOOTSTRAPPING_STRUCT_INFO and \ |
| not shared.Settings.ONLY_MY_CODE and \ |
| not shared.Settings.SIDE_MODULE: # shared libraries/side modules link no C libraries, need them in parent |
| extra_files_to_link = system_libs.get_ports(shared.Settings) |
| extra_files_to_link += system_libs.calculate([f for _, f in sorted(temp_files)] + extra_files_to_link, in_temp, stdout_=None, stderr_=None, forced=forced_stdlibs) |
| |
| # exit block 'calculate system libraries' |
| log_time('calculate system libraries') |
| |
| with ToolchainProfiler.profile_block('link'): |
| # final will be an array if linking is deferred, otherwise a normal string. |
| DEFAULT_FINAL = in_temp(target_basename + '.bc') |
| def get_final(): |
| global final |
| if type(final) != str: |
| final = DEFAULT_FINAL |
| return final |
| |
| # First, combine the bitcode files if there are several. We must also link if we have a singleton .a |
| if len(input_files) + len(extra_files_to_link) > 1 or \ |
| (not LEAVE_INPUTS_RAW and not (suffix(temp_files[0][1]) in BITCODE_ENDINGS or suffix(temp_files[0][1]) in DYNAMICLIB_ENDINGS) and shared.Building.is_ar(temp_files[0][1])): |
| linker_inputs += extra_files_to_link |
| logging.debug('linking: ' + str(linker_inputs)) |
| # force archive contents to all be included, if just archives, or if linking shared modules |
| force_archive_contents = len([temp for i, temp in temp_files if not temp.endswith(STATICLIB_ENDINGS)]) == 0 or not shared.Building.can_build_standalone() |
| |
| # if EMCC_DEBUG=2 then we must link now, so the temp files are complete. |
| # if using the wasm backend, we might be using vanilla LLVM, which does not allow our fastcomp deferred linking opts. |
| # TODO: we could check if this is a fastcomp build, and still speed things up here |
| just_calculate = DEBUG != '2' and not shared.Settings.WASM_BACKEND |
| final = shared.Building.link(linker_inputs, DEFAULT_FINAL, force_archive_contents=force_archive_contents, temp_files=misc_temp_files, just_calculate=just_calculate) |
| else: |
| if not LEAVE_INPUTS_RAW: |
| _, temp_file = temp_files[0] |
| _, input_file = input_files[0] |
| final = in_temp(target_basename + '.bc') |
| if temp_file != input_file: |
| shutil.move(temp_file, final) |
| else: |
| shutil.copyfile(temp_file, final) |
| else: |
| _, input_file = input_files[0] |
| final = in_temp(input_file) |
| shutil.copyfile(input_file, final) |
| |
| # exit block 'link' |
| log_time('link') |
| |
| with ToolchainProfiler.profile_block('post-link'): |
| if DEBUG: |
| emscripten_temp_dir = shared.get_emscripten_temp_dir() |
| logging.debug('saving intermediate processing steps to %s', emscripten_temp_dir) |
| |
| class Intermediate: |
| counter = 0 |
| def save_intermediate(name=None, suffix='js'): |
| name = os.path.join(emscripten_temp_dir, 'emcc-%d%s.%s' % (Intermediate.counter, '' if name is None else '-' + name, suffix)) |
| if type(final) != str: |
| logging.debug('(not saving intermediate %s because deferring linking)' % name) |
| return |
| shutil.copyfile(final, name) |
| Intermediate.counter += 1 |
| |
| if not LEAVE_INPUTS_RAW: save_intermediate('basebc', 'bc') |
| |
| # Optimize, if asked to |
| if not LEAVE_INPUTS_RAW: |
| link_opts = [] if debug_level >= 4 or shared.Settings.CYBERDWARF else ['-strip-debug'] # remove LLVM debug if we are not asked for it |
| if not shared.Settings.ASSERTIONS: |
| link_opts += ['-disable-verify'] |
| |
| if llvm_lto >= 2 and llvm_opts > 0: |
| logging.debug('running LLVM opts as pre-LTO') |
| final = shared.Building.llvm_opt(final, llvm_opts, DEFAULT_FINAL) |
| if DEBUG: save_intermediate('opt', 'bc') |
| |
| # If we can LTO, do it before dce, since it opens up dce opportunities |
| if shared.Building.can_build_standalone() and llvm_lto and llvm_lto != 2: |
| if not shared.Building.can_inline(): link_opts.append('-disable-inlining') |
| # add a manual internalize with the proper things we need to be kept alive during lto |
| link_opts += shared.Building.get_safe_internalize() + ['-std-link-opts'] |
| # execute it now, so it is done entirely before we get to the stage of legalization etc. |
| final = shared.Building.llvm_opt(final, link_opts, DEFAULT_FINAL) |
| if DEBUG: save_intermediate('lto', 'bc') |
| link_opts = [] |
| else: |
| # At minimum remove dead functions etc., this potentially saves a lot in the size of the generated code (and the time to compile it) |
| link_opts += shared.Building.get_safe_internalize() + ['-globaldce'] |
| |
| if cfi: |
| if use_cxx: |
| link_opts.append("-wholeprogramdevirt") |
| link_opts.append("-lowertypetests") |
| |
| if AUTODEBUG: |
| # let llvm opt directly emit ll, to skip writing and reading all the bitcode |
| link_opts += ['-S'] |
| final = shared.Building.llvm_opt(final, link_opts, get_final() + '.link.ll') |
| if DEBUG: save_intermediate('linktime', 'll') |
| else: |
| if len(link_opts) > 0: |
| final = shared.Building.llvm_opt(final, link_opts, DEFAULT_FINAL) |
| if DEBUG: save_intermediate('linktime', 'bc') |
| if save_bc: |
| shutil.copyfile(final, save_bc) |
| |
| # Prepare .ll for Emscripten |
| if LEAVE_INPUTS_RAW: |
| assert len(input_files) == 1 |
| if DEBUG and save_bc: save_intermediate('ll', 'll') |
| |
| if AUTODEBUG: |
| logging.debug('autodebug') |
| next = get_final() + '.ad.ll' |
| execute([shared.PYTHON, shared.AUTODEBUGGER, final, next]) |
| final = next |
| if DEBUG: save_intermediate('autodebug', 'll') |
| |
| assert type(final) == str, 'we must have linked the final files, if linking was deferred, by this point' |
| |
| # exit block 'post-link' |
| log_time('post-link') |
| |
| with ToolchainProfiler.profile_block('emscript'): |
| # Emscripten |
| logging.debug('LLVM => JS') |
| extra_args = [] if not js_libraries else ['--libraries', ','.join(map(os.path.abspath, js_libraries))] |
| if memory_init_file: |
| shared.Settings.MEM_INIT_METHOD = 1 |
| else: |
| assert shared.Settings.MEM_INIT_METHOD != 1 |
| final = shared.Building.emscripten(final, append_ext=False, extra_args=extra_args) |
| if DEBUG: save_intermediate('original') |
| |
| if shared.Settings.WASM_BACKEND: |
| # we also received wasm at this stage |
| wasm_temp = final[:-3] + '.wast' |
| shutil.move(wasm_temp, wasm_text_target) |
| open(wasm_text_target + '.mappedGlobals', 'w').write('{}') # no need for mapped globals for now, but perhaps some day |
| |
| if shared.Settings.CYBERDWARF: |
| cd_target = final + '.cd' |
| shutil.move(cd_target, target + '.cd') |
| |
| # exit block 'emscript' |
| log_time('emscript (llvm => executable code)') |
| |
| with ToolchainProfiler.profile_block('source transforms'): |
| # Embed and preload files |
| if shared.Settings.SPLIT_MEMORY: |
| no_heap_copy = True # copying into the heap is risky when split - the chunks might be too small for the file package! |
| |
| if len(preload_files) + len(embed_files) > 0: |
| logging.debug('setting up files') |
| file_args = [] |
| if len(preload_files) > 0: |
| file_args.append('--preload') |
| file_args += preload_files |
| if len(embed_files) > 0: |
| file_args.append('--embed') |
| file_args += embed_files |
| if len(exclude_files) > 0: |
| file_args.append('--exclude') |
| file_args += exclude_files |
| if use_preload_cache: |
| file_args.append('--use-preload-cache') |
| if no_heap_copy: |
| file_args.append('--no-heap-copy') |
| if not use_closure_compiler: |
| file_args.append('--no-closure') |
| if shared.Settings.LZ4: |
| file_args.append('--lz4') |
| if use_preload_plugins: |
| file_args.append('--use-preload-plugins') |
| file_code = execute([shared.PYTHON, shared.FILE_PACKAGER, unsuffixed(target) + '.data'] + file_args, stdout=PIPE)[0] |
| pre_js = file_code + pre_js |
| |
| if shared.Settings.BINARYEN: |
| # add in the glue integration code as a pre-js, so it is optimized together with everything else |
| wasm_js_glue = open(os.path.join(shared.Settings.BINARYEN_ROOT, 'src', 'js', 'wasm.js-post.js')).read() |
| wasm_js_glue = wasm_js_glue.replace('{{{ asmjsCodeFile }}}', '"' + os.path.basename(asm_target) + '"') |
| wasm_js_glue = wasm_js_glue.replace('{{{ wasmTextFile }}}', '"' + os.path.basename(wasm_text_target) + '"') |
| wasm_js_glue = wasm_js_glue.replace('{{{ wasmBinaryFile }}}', '"' + os.path.basename(wasm_binary_target) + '"') |
| if shared.Settings.BINARYEN_METHOD: |
| wasm_js_glue = wasm_js_glue.replace('{{{ wasmJSMethod }}}', '(Module[\'wasmJSMethod\'] || "' + shared.Settings.BINARYEN_METHOD + '")') |
| else: |
| wasm_js_glue = wasm_js_glue.replace('{{{ wasmJSMethod }}}', 'null') |
| wasm_js_glue = wasm_js_glue.replace('{{{ WASM_BACKEND }}}', str(shared.Settings.WASM_BACKEND)) # if wasm backend, wasm contains memory segments |
| pre_js = wasm_js_glue + '\n' + pre_js |
| |
| # Apply pre and postjs files |
| if pre_js or post_js: |
| logging.debug('applying pre/postjses') |
| src = open(final).read() |
| final += '.pp.js' |
| if WINDOWS: # Avoid duplicating \r\n to \r\r\n when writing out. |
| if pre_js: pre_js = pre_js.replace('\r\n', '\n') |
| if post_js: post_js = post_js.replace('\r\n', '\n') |
| outfile = open(final, 'w') |
| outfile.write(pre_js) |
| outfile.write(src) # this may be large, don't join it to others |
| outfile.write(post_js) |
| outfile.close() |
| pre_js = src = post_js = None |
| if DEBUG: save_intermediate('pre-post') |
| |
| # Apply a source code transformation, if requested |
| if js_transform: |
| shutil.copyfile(final, final + '.tr.js') |
| final += '.tr.js' |
| posix = True if not shared.WINDOWS else False |
| logging.debug('applying transform: %s', js_transform) |
| subprocess.check_call(shlex.split(js_transform, posix=posix) + [os.path.abspath(final)]) |
| if DEBUG: save_intermediate('transformed') |
| |
| js_transform_tempfiles = [final] |
| |
| # exit block 'source transforms' |
| log_time('source transforms') |
| |
| with ToolchainProfiler.profile_block('memory initializer'): |
| if shared.Settings.MEM_INIT_METHOD > 0: |
| memfile = target + '.mem' |
| shared.try_delete(memfile) |
| def repl(m): |
| # handle chunking of the memory initializer |
| s = m.group(1) |
| if len(s) == 0: return '' # don't emit 0-size ones |
| membytes = [int(x or '0') for x in s.split(',')] |
| while membytes and membytes[-1] == 0: |
| membytes.pop() |
| if not membytes: return '' |
| if not memory_init_file: |
| # memory initializer in a string literal |
| return "memoryInitializer = '%s';" % shared.JS.generate_string_initializer(list(membytes)) |
| open(memfile, 'wb').write(''.join(map(chr, membytes))) |
| if DEBUG: |
| # Copy into temp dir as well, so can be run there too |
| shared.safe_copy(memfile, os.path.join(shared.get_emscripten_temp_dir(), os.path.basename(memfile))) |
| if not shared.Settings.BINARYEN: |
| return 'memoryInitializer = "%s";' % os.path.basename(memfile) |
| else: |
| # with wasm, we may have the mem init file in the wasm binary already |
| return 'memoryInitializer = Module["wasmJSMethod"].indexOf("asmjs") >= 0 || Module["wasmJSMethod"].indexOf("interpret-asm2wasm") >= 0 ? "%s" : null;' % os.path.basename(memfile) |
| src = re.sub(shared.JS.memory_initializer_pattern, repl, open(final).read(), count=1) |
| open(final + '.mem.js', 'w').write(src) |
| final += '.mem.js' |
| src = None |
| js_transform_tempfiles[-1] = final # simple text substitution preserves comment line number mappings |
| if DEBUG: |
| if os.path.exists(memfile): |
| save_intermediate('meminit') |
| logging.debug('wrote memory initialization to %s', memfile) |
| else: |
| logging.debug('did not see memory initialization') |
| elif not shared.Settings.MAIN_MODULE and not shared.Settings.SIDE_MODULE and debug_level < 4: |
| # not writing a binary init, but we can at least optimize them by splitting them up |
| src = open(final).read() |
| src = shared.JS.optimize_initializer(src) |
| if src is not None: |
| logging.debug('optimizing memory initialization') |
| open(final + '.mem.js', 'w').write(src) |
| final += '.mem.js' |
| src = None |
| |
| if shared.Settings.USE_PTHREADS: |
| shutil.copyfile(shared.path_from_root('src', 'pthread-main.js'), os.path.join(os.path.dirname(os.path.abspath(target)), 'pthread-main.js')) |
| |
| # Generate the fetch-worker.js script for multithreaded emscripten_fetch() support if targeting pthreads. |
| if shared.Settings.FETCH and shared.Settings.USE_PTHREADS: |
| shared.make_fetch_worker(final, os.path.join(os.path.dirname(os.path.abspath(target)), 'fetch-worker.js')) |
| |
| if shared.Settings.BINARYEN: |
| # Insert a call to integrate with wasm.js |
| js = open(final).read() |
| js = js.replace('// {{PREAMBLE_ADDITIONS}}', 'integrateWasmJS(Module);\n// {{PREAMBLE_ADDITIONS}}') |
| final += '.binaryen.js' |
| open(final, 'w').write(js) |
| |
| # exit block 'memory initializer' |
| log_time('memory initializer') |
| |
| with ToolchainProfiler.profile_block('js opts'): |
| # It is useful to run several js optimizer passes together, to save on unneeded unparsing/reparsing |
| class JSOptimizer: |
| queue = [] |
| extra_info = {} |
| queue_history = [] |
| blacklist = (os.environ.get('EMCC_JSOPT_BLACKLIST') or '').split(',') |
| minify_whitespace = False |
| cleanup_shell = False |
| |
| @staticmethod |
| def flush(title='js_opts'): |
| JSOptimizer.queue = filter(lambda p: p not in JSOptimizer.blacklist, JSOptimizer.queue) |
| |
| assert not shared.Settings.WASM_BACKEND, 'JSOptimizer should not run with pure wasm output' |
| |
| if JSOptimizer.extra_info is not None and len(JSOptimizer.extra_info) == 0: |
| JSOptimizer.extra_info = None |
| |
| if len(JSOptimizer.queue) > 0 and not(not shared.Settings.ASM_JS and len(JSOptimizer.queue) == 1 and JSOptimizer.queue[0] == 'last'): |
| |
| def run_passes(passes, title, just_split, just_concat): |
| global final, target |
| passes = ['asm'] + passes |
| if shared.Settings.PRECISE_F32: |
| passes = ['asmPreciseF32'] + passes |
| if (emit_symbol_map or shared.Settings.CYBERDWARF) and 'minifyNames' in passes: |
| passes += ['symbolMap=' + target + '.symbols'] |
| if profiling_funcs and 'minifyNames' in passes: |
| passes += ['profilingFuncs'] |
| if JSOptimizer.minify_whitespace and 'last' in passes: |
| passes += ['minifyWhitespace'] |
| if JSOptimizer.cleanup_shell and 'last' in passes: |
| passes += ['cleanup'] |
| logging.debug('applying js optimization passes: %s', ' '.join(passes)) |
| misc_temp_files.note(final) |
| final = shared.Building.js_optimizer(final, passes, debug_level >= 4, JSOptimizer.extra_info, just_split=just_split, just_concat=just_concat) |
| misc_temp_files.note(final) |
| js_transform_tempfiles.append(final) |
| if DEBUG: save_intermediate(title, suffix='js' if 'emitJSON' not in passes else 'json') |
| |
| passes = JSOptimizer.queue[:] |
| |
| if DEBUG != '2' or len(passes) < 2: |
| # by assumption, our input is JS, and our output is JS. If a pass is going to run in the native optimizer in C++, then we |
| # must give it JSON and receive from it JSON |
| chunks = [] |
| curr = [] |
| for p in passes: |
| if len(curr) == 0: |
| curr.append(p) |
| else: |
| native = shared.js_optimizer.use_native(p, source_map=debug_level >= 4) |
| last_native = shared.js_optimizer.use_native(curr[-1], source_map=debug_level >= 4) |
| if native == last_native: |
| curr.append(p) |
| else: |
| curr.append('emitJSON') |
| chunks.append(curr) |
| curr = ['receiveJSON', p] |
| if len(curr) > 0: |
| chunks.append(curr) |
| if len(chunks) == 1: |
| run_passes(chunks[0], title, just_split=False, just_concat=False) |
| else: |
| for i in range(len(chunks)): |
| run_passes(chunks[i], 'js_opts_' + str(i), just_split='receiveJSON' in chunks[i], just_concat='emitJSON' in chunks[i]) |
| else: |
| # DEBUG 2, run each pass separately |
| extra_info = JSOptimizer.extra_info |
| for p in passes: |
| JSOptimizer.queue = [p] |
| JSOptimizer.flush(p) |
| JSOptimizer.extra_info = extra_info # flush wipes it |
| log_time('part of js opts') |
| JSOptimizer.queue_history += JSOptimizer.queue |
| JSOptimizer.queue = [] |
| JSOptimizer.extra_info = {} |
| |
| if shared.Settings.DEAD_FUNCTIONS: |
| JSOptimizer.queue += ['eliminateDeadFuncs'] |
| JSOptimizer.extra_info['dead_functions'] = shared.Settings.DEAD_FUNCTIONS |
| |
| if opt_level >= 1 and js_opts: |
| logging.debug('running js post-opts') |
| |
| if DEBUG == '2': |
| # Clean up the syntax a bit |
| JSOptimizer.queue += ['noop'] |
| |
| def get_eliminate(): |
| if shared.Settings.ALLOW_MEMORY_GROWTH: |
| return 'eliminateMemSafe' |
| else: |
| return 'eliminate' |
| |
| if opt_level >= 2: |
| JSOptimizer.queue += [get_eliminate()] |
| |
| if shared.Settings.AGGRESSIVE_VARIABLE_ELIMINATION: |
| # note that this happens before registerize/minification, which can obfuscate the name of 'label', which is tricky |
| JSOptimizer.queue += ['aggressiveVariableElimination'] |
| |
| JSOptimizer.queue += ['simplifyExpressions'] |
| |
| if shared.Settings.EMTERPRETIFY: |
| # emterpreter code will not run through a JS optimizing JIT, do more work ourselves |
| JSOptimizer.queue += ['localCSE'] |
| |
| if shared.Settings.EMTERPRETIFY: |
| # add explicit label setting, as we will run aggressiveVariableElimination late, *after* 'label' is no longer notable by name |
| JSOptimizer.queue += ['safeLabelSetting'] |
| |
| if opt_level >= 1 and js_opts: |
| if opt_level >= 2: |
| # simplify ifs if it is ok to make the code somewhat unreadable, and unless outlining (simplified ifs |
| # with commaified code breaks late aggressive variable elimination) |
| if shared.Settings.SIMPLIFY_IFS and (debug_level == 0 or profiling) and shared.Settings.OUTLINING_LIMIT == 0: JSOptimizer.queue += ['simplifyIfs'] |
| |
| if shared.Settings.PRECISE_F32: JSOptimizer.queue += ['optimizeFrounds'] |
| |
| def do_minify(): # minifies the code. this is also when we do certain optimizations that must be done right before or after minification |
| if shared.Settings.SPLIT_MEMORY: JSOptimizer.queue += ['splitMemory', 'simplifyExpressions'] # must be done before minification |
| |
| if opt_level >= 2: |
| if debug_level < 2 and not use_closure_compiler == 2: |
| JSOptimizer.queue += ['minifyNames'] |
| if debug_level == 0: |
| JSOptimizer.minify_whitespace = True |
| |
| if use_closure_compiler == 1: |
| JSOptimizer.queue += ['closure'] |
| elif debug_level <= 2 and shared.Settings.FINALIZE_ASM_JS and not use_closure_compiler: |
| JSOptimizer.cleanup_shell = True |
| |
| if js_opts: |
| if shared.Settings.SAFE_HEAP: JSOptimizer.queue += ['safeHeap'] |
| |
| if shared.Settings.OUTLINING_LIMIT > 0: |
| JSOptimizer.queue += ['outline'] |
| JSOptimizer.extra_info['sizeToOutline'] = shared.Settings.OUTLINING_LIMIT |
| |
| if opt_level >= 2 and debug_level < 3: |
| if opt_level >= 3 or shrink_level > 0: |
| JSOptimizer.queue += ['registerizeHarder'] |
| else: |
| JSOptimizer.queue += ['registerize'] |
| |
| # NOTE: Important that this comes after registerize/registerizeHarder |
| if shared.Settings.ELIMINATE_DUPLICATE_FUNCTIONS and opt_level >= 2: |
| JSOptimizer.flush() |
| shared.Building.eliminate_duplicate_funcs(final) |
| |
| if shared.Settings.EVAL_CTORS and memory_init_file and debug_level < 4: |
| JSOptimizer.flush() |
| shared.Building.eval_ctors(final, memfile) |
| if DEBUG: save_intermediate('eval-ctors', 'js') |
| |
| if js_opts: |
| if not shared.Settings.EMTERPRETIFY: |
| do_minify() |
| |
| if opt_level >= 2: |
| JSOptimizer.queue += ['asmLastOpts'] |
| |
| if shared.Settings.FINALIZE_ASM_JS: JSOptimizer.queue += ['last'] |
| |
| JSOptimizer.flush() |
| |
| if use_closure_compiler == 2: |
| JSOptimizer.flush() |
| |
| logging.debug('running closure') |
| # no need to add this to js_transform_tempfiles, because closure and |
| # debug_level > 0 are never simultaneously true |
| final = shared.Building.closure_compiler(final, pretty=debug_level >= 1) |
| if DEBUG: save_intermediate('closure') |
| |
| log_time('js opts') |
| # exit block 'js opts' |
| |
| with ToolchainProfiler.profile_block('final emitting'): |
| if shared.Settings.MODULARIZE: |
| logging.debug('Modularizing, assigning to var ' + shared.Settings.EXPORT_NAME) |
| src = open(final).read() |
| final = final + '.modular.js' |
| f = open(final, 'w') |
| f.write('var ' + shared.Settings.EXPORT_NAME + ' = function(' + shared.Settings.EXPORT_NAME + ') {\n') |
| f.write(' ' + shared.Settings.EXPORT_NAME + ' = ' + shared.Settings.EXPORT_NAME + ' || {};\n') |
| f.write(' var Module = ' + shared.Settings.EXPORT_NAME + ';\n') # included code may refer to Module (e.g. from file packager), so alias it |
| f.write('\n') |
| f.write(src) |
| f.write('\n') |
| f.write(' return ' + shared.Settings.EXPORT_NAME + ';\n') |
| f.write('};\n') |
| f.close() |
| src = None |
| |
| if shared.Settings.EMTERPRETIFY: |
| JSOptimizer.flush() |
| logging.debug('emterpretifying') |
| import json |
| try: |
| # move temp js to final position, alongside its mem init file |
| shutil.move(final, js_target) |
| args = [shared.PYTHON, shared.path_from_root('tools', 'emterpretify.py'), js_target, final + '.em.js', json.dumps(shared.Settings.EMTERPRETIFY_BLACKLIST), json.dumps(shared.Settings.EMTERPRETIFY_WHITELIST), '', str(shared.Settings.SWAPPABLE_ASM_MODULE)] |
| if shared.Settings.EMTERPRETIFY_ASYNC: |
| args += ['ASYNC=1'] |
| if shared.Settings.EMTERPRETIFY_ADVISE: |
| args += ['ADVISE=1'] |
| if profiling or profiling_funcs: |
| args += ['PROFILING=1'] |
| if shared.Settings.ASSERTIONS: |
| args += ['ASSERTIONS=1'] |
| if shared.Settings.PRECISE_F32: |
| args += ['FROUND=1'] |
| if shared.Settings.ALLOW_MEMORY_GROWTH: |
| args += ['MEMORY_SAFE=1'] |
| if shared.Settings.EMTERPRETIFY_FILE: |
| args += ['FILE="' + shared.Settings.EMTERPRETIFY_FILE + '"'] |
| execute(args) |
| final = final + '.em.js' |
| finally: |
| shared.try_delete(js_target) |
| |
| if shared.Settings.EMTERPRETIFY_ADVISE: |
| logging.warning('halting compilation due to EMTERPRETIFY_ADVISE') |
| sys.exit(0) |
| |
| # minify (if requested) after emterpreter processing, and finalize output |
| logging.debug('finalizing emterpreted code') |
| shared.Settings.FINALIZE_ASM_JS = 1 |
| do_minify() |
| JSOptimizer.queue += ['last'] |
| JSOptimizer.flush() |
| |
| # finalize the original as well, if we will be swapping it in (TODO: add specific option for this) |
| if shared.Settings.SWAPPABLE_ASM_MODULE: |
| real = final |
| original = js_target + '.orig.js' # the emterpretify tool saves the original here |
| final = original |
| logging.debug('finalizing original (non-emterpreted) code at ' + final) |
| do_minify() |
| JSOptimizer.queue += ['last'] |
| JSOptimizer.flush() |
| safe_move(final, original) |
| final = real |
| |
| # Remove some trivial whitespace # TODO: do not run when compress has already been done on all parts of the code |
| #src = open(final).read() |
| #src = re.sub(r'\n+[ \n]*\n+', '\n', src) |
| #open(final, 'w').write(src) |
| |
| # Bundle symbol data in with the cyberdwarf file |
| if shared.Settings.CYBERDWARF: |
| execute([shared.PYTHON, shared.path_from_root('tools', 'emdebug_cd_merger.py'), target + '.cd', target+'.symbols']) |
| |
| # Emit source maps, if needed |
| if debug_level >= 4: |
| logging.debug('generating source maps') |
| jsrun.run_js(shared.path_from_root('tools', 'source-maps', 'sourcemapper.js'), |
| shared.NODE_JS, js_transform_tempfiles + |
| ['--sourceRoot', os.getcwd(), |
| '--mapFileBaseName', target, |
| '--offset', str(0)]) |
| |
| # Move final output to the js target |
| shutil.move(final, js_target) |
| |
| generated_text_files_with_native_eols = [js_target] |
| |
| # Separate out the asm.js code, if asked. Or, if necessary for another option |
| if (separate_asm or shared.Settings.BINARYEN) and not shared.Settings.WASM_BACKEND: |
| logging.debug('separating asm') |
| with misc_temp_files.get_file(suffix='.js') as temp_target: |
| subprocess.check_call([shared.PYTHON, shared.path_from_root('tools', 'separate_asm.py'), js_target, asm_target, temp_target]) |
| generated_text_files_with_native_eols += [asm_target] |
| shutil.move(temp_target, js_target) |
| |
| # extra only-my-code logic |
| if shared.Settings.ONLY_MY_CODE: |
| temp = asm_target + '.only.js' |
| print jsrun.run_js(shared.path_from_root('tools', 'js-optimizer.js'), shared.NODE_JS, args=[asm_target, 'eliminateDeadGlobals', 'last', 'asm'], stdout=open(temp, 'w')) |
| shutil.move(temp, asm_target) |
| |
| if shared.Settings.BINARYEN_METHOD: |
| methods = shared.Settings.BINARYEN_METHOD.split(',') |
| valid_methods = ['asmjs', 'native-wasm', 'interpret-s-expr', 'interpret-binary', 'interpret-asm2wasm'] |
| for m in methods: |
| if not m.strip() in valid_methods: |
| logging.error('Unrecognized BINARYEN_METHOD "' + m.strip() + '" specified! Please pass a comma-delimited list containing one or more of: ' + ','.join(valid_methods)) |
| sys.exit(1) |
| |
| if shared.Settings.BINARYEN: |
| logging.debug('using binaryen, with method: ' + shared.Settings.BINARYEN_METHOD) |
| binaryen_bin = os.path.join(shared.Settings.BINARYEN_ROOT, 'bin') |
| # Emit wasm.js at the top of the js. This is *not* optimized with the rest of the code, since |
| # (1) it contains asm.js, whose validation would be broken, and (2) it's very large so it would |
| # be slow in cleanup/JSDCE etc. |
| # TODO: for html, it could be a separate script tag |
| # We need wasm.js if there is a chance the polyfill will be used. If the user sets |
| # BINARYEN_METHOD with something that doesn't use the polyfill, then we don't need it. |
| if not shared.Settings.BINARYEN_METHOD or 'interpret' in shared.Settings.BINARYEN_METHOD: |
| logging.debug('integrating wasm.js polyfill interpreter') |
| wasm_js = open(os.path.join(binaryen_bin, 'wasm.js')).read() |
| wasm_js = wasm_js.replace('EMSCRIPTEN_', 'emscripten_') # do not confuse the markers |
| js = open(js_target).read() |
| combined = open(js_target, 'w') |
| combined.write(wasm_js) |
| combined.write('\n//^wasm.js\n') |
| combined.write(js) |
| combined.close() |
| # finish compiling to WebAssembly, using asm2wasm, if we didn't already emit WebAssembly directly using the wasm backend. |
| if not shared.Settings.WASM_BACKEND: |
| cmd = [os.path.join(binaryen_bin, 'asm2wasm'), asm_target, '--total-memory=' + str(shared.Settings.TOTAL_MEMORY)] |
| if shared.Settings.BINARYEN_IMPRECISE: |
| cmd += ['--imprecise'] |
| # pass optimization level to asm2wasm (if not optimizing, or which passes we should run was overridden, do not optimize) |
| if opt_level > 0 and not shared.Settings.BINARYEN_PASSES: |
| cmd.append(shared.Building.opt_level_to_str(opt_level, shrink_level)) |
| # import mem init file if it exists, and if we will not be using asm.js as a binaryen method (as it needs the mem init file, of course) |
| import_mem_init = memory_init_file and os.path.exists(memfile) and 'asmjs' not in shared.Settings.BINARYEN_METHOD and 'interpret-asm2wasm' not in shared.Settings.BINARYEN_METHOD |
| if import_mem_init: |
| cmd += ['--mem-init=' + memfile] |
| if not shared.Settings.RELOCATABLE: |
| cmd += ['--mem-base=' + str(shared.Settings.GLOBAL_BASE)] |
| if shared.Settings.BINARYEN_MEM_MAX >= 0: |
| cmd += ['--mem-max=' + str(shared.Settings.BINARYEN_MEM_MAX)] |
| if shared.Building.is_wasm_only(): |
| cmd += ['--wasm-only'] # this asm.js is code not intended to run as asm.js, it is only ever going to be wasm, an can contain special fastcomp-wasm support |
| logging.debug('asm2wasm (asm.js => WebAssembly): ' + ' '.join(cmd)) |
| TimeLogger.update() |
| subprocess.check_call(cmd, stdout=open(wasm_text_target, 'w')) |
| log_time('asm2wasm') |
| if import_mem_init: |
| # remove and forget about the mem init file in later processing; it does not need to be prefetched in the html, etc. |
| os.unlink(memfile) |
| memory_init_file = False |
| if shared.Settings.BINARYEN_PASSES: |
| shutil.move(wasm_text_target, wasm_text_target + '.pre') |
| cmd = [os.path.join(binaryen_bin, 'wasm-opt'), wasm_text_target + '.pre', '-o', wasm_text_target] + map(lambda p: '--' + p, shared.Settings.BINARYEN_PASSES.split(',')) |
| logging.debug('wasm-opt on BINARYEN_PASSES: ' + ' '.join(cmd)) |
| subprocess.check_call(cmd) |
| if 'native-wasm' in shared.Settings.BINARYEN_METHOD or 'interpret-binary' in shared.Settings.BINARYEN_METHOD: |
| cmd = [os.path.join(binaryen_bin, 'wasm-as'), wasm_text_target, '-o', wasm_binary_target] |
| if debug_level >= 2 or profiling_funcs: |
| cmd += ['-g'] |
| if emit_symbol_map or shared.Settings.CYBERDWARF: |
| cmd += ['--symbolmap=' + target + '.symbols'] |
| logging.debug('wasm-as (text => binary): ' + ' '.join(cmd)) |
| subprocess.check_call(cmd) |
| if shared.Settings.BINARYEN_SCRIPTS: |
| binaryen_scripts = os.path.join(shared.Settings.BINARYEN_ROOT, 'scripts') |
| script_env = os.environ.copy() |
| root_dir = os.path.abspath(os.path.dirname(__file__)) |
| if script_env.get('PYTHONPATH'): |
| script_env['PYTHONPATH'] += ':' + root_dir |
| else: |
| script_env['PYTHONPATH'] = root_dir |
| for script in shared.Settings.BINARYEN_SCRIPTS.split(','): |
| logging.debug('running binaryen script: ' + script) |
| subprocess.check_call([shared.PYTHON, os.path.join(binaryen_scripts, script), js_target, wasm_text_target], env=script_env) |
| |
| # If we were asked to also generate HTML, do that |
| if final_suffix == 'html': |
| logging.debug('generating HTML') |
| shell = open(shell_path).read() |
| assert '{{{ SCRIPT }}}' in shell, 'HTML shell must contain {{{ SCRIPT }}} , see src/shell.html for an example' |
| base_js_target = os.path.basename(js_target) |
| |
| def un_src(): # use this if you want to modify the script and need it to be inline |
| global script_src, script_inline |
| if script_src is None: return |
| script_inline = ''' |
| var script = document.createElement('script'); |
| script.src = "%s"; |
| document.body.appendChild(script); |
| ''' % script_src |
| script_src = None |
| |
| asm_mods = [] |
| |
| if proxy_to_worker: |
| child_js = shared.Settings.PROXY_TO_WORKER_FILENAME or target_basename |
| script_inline = ''' |
| if ((',' + window.location.search.substr(1) + ',').indexOf(',noProxy,') < 0) { |
| console.log('running code in a web worker'); |
| ''' + open(shared.path_from_root('src', 'webGLClient.js')).read() + '\n' + shared.read_and_preprocess(shared.path_from_root('src', 'proxyClient.js')).replace('{{{ filename }}}', child_js).replace('{{{ IDBStore.js }}}', open(shared.path_from_root('src', 'IDBStore.js')).read()) + ''' |
| } else { |
| // note: no support for code mods (PRECISE_F32==2) |
| console.log('running code on the main thread'); |
| var script = document.createElement('script'); |
| script.src = "%s.js"; |
| document.body.appendChild(script); |
| } |
| ''' % child_js |
| else: |
| # Normal code generation path |
| script_src = base_js_target |
| |
| from tools import client_mods |
| asm_mods = client_mods.get_mods(shared.Settings, minified = 'minifyNames' in JSOptimizer.queue_history, separate_asm = separate_asm) |
| |
| if shared.Settings.EMTERPRETIFY_FILE: |
| # We need to load the emterpreter file before anything else, it has to be synchronously ready |
| un_src() |
| script_inline = ''' |
| var xhr = new XMLHttpRequest(); |
| xhr.open('GET', '%s', true); |
| xhr.responseType = 'arraybuffer'; |
| xhr.onload = function() { |
| Module.emterpreterFile = xhr.response; |
| %s |
| }; |
| xhr.send(null); |
| ''' % (shared.Settings.EMTERPRETIFY_FILE, script_inline) |
| |
| if memory_init_file: |
| # start to load the memory init file in the HTML, in parallel with the JS |
| un_src() |
| script_inline = (''' |
| (function() { |
| var memoryInitializer = '%s'; |
| if (typeof Module['locateFile'] === 'function') { |
| memoryInitializer = Module['locateFile'](memoryInitializer); |
| } else if (Module['memoryInitializerPrefixURL']) { |
| memoryInitializer = Module['memoryInitializerPrefixURL'] + memoryInitializer; |
| } |
| var xhr = Module['memoryInitializerRequest'] = new XMLHttpRequest(); |
| xhr.open('GET', memoryInitializer, true); |
| xhr.responseType = 'arraybuffer'; |
| xhr.send(null); |
| })(); |
| ''' % os.path.basename(memfile)) + script_inline |
| |
| if separate_asm: |
| un_src() |
| if len(asm_mods) == 0: |
| # just load the asm, then load the rest |
| script_inline = ''' |
| var script = document.createElement('script'); |
| script.src = "%s"; |
| script.onload = function() { |
| setTimeout(function() { |
| %s |
| }, 1); // delaying even 1ms is enough to allow compilation memory to be reclaimed |
| }; |
| document.body.appendChild(script); |
| ''' % (os.path.basename(asm_target), script_inline) |
| else: |
| # may need to modify the asm code, load it as text, modify, and load asynchronously |
| script_inline = ''' |
| var codeXHR = new XMLHttpRequest(); |
| codeXHR.open('GET', '%s', true); |
| codeXHR.onload = function() { |
| var code = codeXHR.responseText; |
| %s |
| var blob = new Blob([code], { type: 'text/javascript' }); |
| codeXHR = null; |
| var src = URL.createObjectURL(blob); |
| var script = document.createElement('script'); |
| script.src = src; |
| script.onload = function() { |
| setTimeout(function() { |
| %s |
| }, 1); // delaying even 1ms is enough to allow compilation memory to be reclaimed |
| URL.revokeObjectURL(script.src); |
| }; |
| document.body.appendChild(script); |
| }; |
| codeXHR.send(null); |
| ''' % (os.path.basename(asm_target), '\n'.join(asm_mods), script_inline) |
| else: |
| assert len(asm_mods) == 0, 'no --separate-asm means no client code mods are possible' |
| |
| if shared.Settings.BINARYEN: |
| # We need to load the wasm file before anything else, it has to be synchronously ready TODO: optimize |
| un_src() |
| script_inline = ''' |
| var xhr = new XMLHttpRequest(); |
| xhr.open('GET', '%s', true); |
| xhr.responseType = 'arraybuffer'; |
| xhr.onload = function() { |
| Module.wasmBinary = xhr.response; |
| %s |
| }; |
| xhr.send(null); |
| ''' % (os.path.basename(wasm_binary_target), script_inline) |
| |
| html = open(target, 'wb') |
| assert (script_src or script_inline) and not (script_src and script_inline) |
| if script_src: |
| script_replacement = '<script async type="text/javascript" src="%s"></script>' % urllib.quote(script_src) |
| else: |
| script_replacement = '<script>\n%s\n</script>' % script_inline |
| html_contents = shell.replace('{{{ SCRIPT }}}', script_replacement) |
| html_contents = tools.line_endings.convert_line_endings(html_contents, '\n', output_eol) |
| html.write(html_contents) |
| html.close() |
| else: # final_suffix != html |
| if proxy_to_worker: |
| shutil.move(js_target, js_target[:-3] + '.worker.js') # compiler output goes in .worker.js file |
| worker_target_basename = target_basename + '.worker' |
| target_contents = open(shared.path_from_root('src', 'webGLClient.js')).read() + '\n' + open(shared.path_from_root('src', 'proxyClient.js')).read().replace('{{{ filename }}}', shared.Settings.PROXY_TO_WORKER_FILENAME or worker_target_basename).replace('{{{ IDBStore.js }}}', open(shared.path_from_root('src', 'IDBStore.js')).read()) |
| open(target, 'w').write(target_contents) |
| |
| for f in generated_text_files_with_native_eols: |
| tools.line_endings.convert_line_endings_in_file(f, os.linesep, output_eol) |
| log_time('final emitting') |
| # exit block 'final emitting' |
| |
| if DEBUG: logging.debug('total time: %.2f seconds', (time.time() - start_time)) |
| |
| finally: |
| if not TEMP_DIR: |
| try: |
| shutil.rmtree(temp_dir) |
| except: |
| pass |
| else: |
| logging.info('emcc saved files are in:' + temp_dir) |
| |
| if __name__ == '__main__': |
| run() |
| sys.exit(0) |