| #!/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. |
| ''' |
| |
| import os, sys, shutil, tempfile, subprocess, shlex, time, re, logging |
| 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 |
| |
| # 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') |
| 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 |
| |
| if DEBUG: logging.warning('invocation: ' + ' '.join(sys.argv) + (' + ' + EMCC_CFLAGS if EMCC_CFLAGS else '') + ' (in ' + os.getcwd() + ')') |
| if EMCC_CFLAGS: sys.argv.append(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) |
| |
| # 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) |
| |
| 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__', '-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 |
| target = None |
| 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) |
| |
| use_cxx = True |
| |
| for i in range(1, len(sys.argv)): |
| arg = sys.argv[i] |
| if not arg.startswith('-'): |
| if arg.endswith(C_ENDINGS + OBJC_ENDINGS): |
| use_cxx = False |
| |
| # 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 |
| |
| 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 |
| log_time_last = time.time() |
| def log_time(name): |
| global log_time_last |
| now = time.time() |
| logging.debug('emcc step "%s" took %.2f seconds', name, now - log_time_last) |
| log_time_last = now |
| |
| misc_temp_files = shared.configuration.get_temp_files() |
| |
| try: |
| call = CXX if use_cxx else CC |
| |
| ## 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 |
| llvm_opts = None |
| llvm_lto = None |
| 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 |
| 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 |
| |
| 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 |
| |
| |
| if use_cxx: |
| default_cxx_std = '-std=c++03' # Enforce a consistent C++ standard when compiling .cpp files, if user does not specify one on the cmdline. |
| else: |
| default_cxx_std = '' # Compiling C code with .c files, don't enforce a default C++ std. |
| |
| 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 |
| |
| 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]) |
| # 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. |
| newargs.append('-mllvm') |
| newargs.append('-disable-llvm-optzns') |
| elif newargs[i].startswith('--js-opts'): |
| check_bad_eq(newargs[i]) |
| js_opts = eval(newargs[i+1]) |
| 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='): |
| 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.warning('clearing 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.warning('clearing ports') |
| system_libs.Ports.erase() |
| 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] == '--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] = '' |
| |
| if should_exit: |
| sys.exit(0) |
| |
| newargs = [arg for arg in newargs if arg is not ''] |
| |
| # 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 js_opts is None: js_opts = opt_level >= 2 |
| if llvm_opts is None: llvm_opts = LLVM_OPT_LEVEL[opt_level] |
| if opt_level == 0: debug_level = max(3, debug_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): |
| settings_changes.append(newargs[i+1]) |
| newargs[i] = newargs[i+1] = '' |
| 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']: 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: |
| 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' |
| |
| if separate_asm: |
| asm_target = js_target[:-3] + '.asm.js' |
| shared.Settings.SEPARATE_ASM = asm_target |
| |
| # 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 and lib not in ['GL', 'GLU', 'glut', 'm', 'c', 'SDL', 'stdc++']: # whitelist our default libraries |
| logging.warning('emcc: cannot find library "%s"', lib) |
| |
| # 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 |
| |
| assert not (separate_asm and final_suffix != 'html'), '--separate-asm requires building to HTML' |
| |
| # 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, 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 |
| |
| pre_fastcomp_opts = [] |
| |
| # 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) |
| if key == 'EXPORTED_FUNCTIONS': |
| # used for warnings in emscripten.py |
| shared.Settings.ORIGINAL_EXPORTED_FUNCTIONS = original_exported_response or shared.Settings.EXPORTED_FUNCTIONS[:] |
| |
| 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 |
| |
| fastcomp_opts = [] |
| if shared.Settings.NO_EXIT_RUNTIME: |
| pre_fastcomp_opts += ['-emscripten-no-exit-runtime'] |
| if not llvm_lto: fastcomp_opts += ['-globalopt', '-globaldce'] |
| fastcomp_opts += ['-pnacl-abi-simplify-preopt', '-pnacl-abi-simplify-postopt'] |
| if shared.Settings.DISABLE_EXCEPTION_CATCHING != 1: |
| fastcomp_opts += ['-enable-emscripten-cxx-exceptions'] |
| if shared.Settings.DISABLE_EXCEPTION_CATCHING == 2: |
| fastcomp_opts += ['-emscripten-cxx-exceptions-whitelist=' + ','.join(shared.Settings.EXCEPTION_CATCHING_WHITELIST or ['fake'])] |
| if shared.Settings.ASYNCIFY: |
| fastcomp_opts += ['-emscripten-asyncify'] |
| fastcomp_opts += ['-emscripten-asyncify-functions=' + ','.join(shared.Settings.ASYNCIFY_FUNCTIONS)] |
| fastcomp_opts += ['-emscripten-asyncify-whitelist=' + ','.join(shared.Settings.ASYNCIFY_WHITELIST)] |
| |
| assert not shared.Settings.PGO, 'cannot run PGO in ASM_JS mode' |
| |
| if shared.Settings.SAFE_HEAP and not js_opts: |
| js_opts = True |
| logging.debug('enabling js opts for SAFE_HEAP') |
| |
| 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.WASM: |
| logging.warning('disabling WASM in SIDE_MODULE') |
| shared.Settings.WASM = 0 |
| |
| 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' |
| |
| if shared.Settings.WASM: |
| assert not shared.Settings.ALLOW_MEMORY_GROWTH, 'memory growth is not supported with WASM=1' |
| |
| 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.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') |
| 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'] |
| |
| forced_stdlibs = [] |
| if shared.Settings.DEMANGLE_SUPPORT: |
| shared.Settings.EXPORTED_FUNCTIONS += ['___cxa_demangle'] |
| forced_stdlibs += ['libcxxabi'] |
| |
| 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' |
| |
| 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: |
| js_opts = True |
| logging.debug('enabling js opts for EMTERPRETIFY') |
| 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 and not js_opts: |
| js_opts = True |
| logging.debug('enabling js opts for DEAD_FUNCTIONS') |
| |
| if proxy_to_worker: |
| shared.Settings.PROXY_TO_WORKER = 1 |
| |
| if js_opts: |
| shared.Settings.RUNNING_JS_OPTS = 1 |
| |
| if not shared.Settings.NO_FILESYSTEM: |
| 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 |
| |
| 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') |
| else: |
| js_libraries.append(shared.path_from_root('src', 'library_pthread_stub.js')) |
| |
| if shared.Settings.USE_PTHREADS: |
| if shared.Settings.PROXY_TO_WORKER: |
| logging.error('-s PROXY_TO_WORKER=1 is not yet supported with -s USE_PTHREADS=1!') |
| exit(1) |
| if shared.Settings.LINKABLE: |
| logging.error('-s LINKABLE=1 is not supported with -s USE_PTHREADS=1!') |
| exit(1) |
| if shared.Settings.SIDE_MODULE: |
| logging.error('-s SIDE_MODULE=1 is not supported with -s USE_PTHREADS=1!') |
| exit(1) |
| if shared.Settings.MAIN_MODULE: |
| logging.error('-s MAIN_MODULE=1 is not supported with -s USE_PTHREADS=1!') |
| exit(1) |
| |
| 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 = [] |
| |
| log_time('parse arguments and setup') |
| |
| # 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 |
| 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)) |
| |
| # 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): |
| 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) |
| 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: |
| logging.error(input_file + ': Unknown file suffix when compiling to LLVM bitcode!') |
| sys.exit(1) |
| |
| log_time('bitcodeize inputs') |
| |
| if not LEAVE_INPUTS_RAW: |
| 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) |
| |
| log_time('process inputs') |
| |
| ## Continue on to create JavaScript |
| |
| 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.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, stderr, forced=forced_stdlibs) |
| |
| log_time('calculate system libraries') |
| |
| # 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() |
| just_calculate = DEBUG != '2' # if EMCC_DEBUG=2 , link now, otherwise defer to be more efficient |
| 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) |
| |
| log_time('link') |
| |
| if DEBUG: |
| emscripten_temp_dir = shared.get_emscripten_temp_dir() |
| logging.debug('saving intermediate processing steps to %s', emscripten_temp_dir) |
| |
| intermediate_counter = 0 |
| def save_intermediate(name=None, suffix='js'): |
| global intermediate_counter |
| 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 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: |
| 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, pre_fastcomp_opts + link_opts, DEFAULT_FINAL) |
| if DEBUG: save_intermediate('lto', 'bc') |
| pre_fastcomp_opts = [] |
| 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 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 not save_bc: |
| # Simplify LLVM bitcode for fastcomp |
| link_opts = pre_fastcomp_opts + link_opts + fastcomp_opts |
| final = shared.Building.llvm_opt(final, link_opts, DEFAULT_FINAL) |
| if DEBUG: save_intermediate('linktime', 'bc') |
| if save_bc: |
| shutil.copyfile(final, save_bc) |
| final = shared.Building.llvm_opt(final, fastcomp_opts, get_final() + '.adsimp.bc') |
| if DEBUG: save_intermediate('adsimp', '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') |
| |
| # Simplify bitcode after autodebug |
| if AUTODEBUG or LEAVE_INPUTS_RAW: |
| final = shared.Building.llvm_opt(final, fastcomp_opts, get_final() + '.adsimp.bc') |
| if DEBUG: save_intermediate('adsimp', 'bc') |
| |
| assert type(final) == str, 'we must have linked the final files, if linking was deferred, by this point' |
| |
| log_time('post-link') |
| |
| # 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') |
| |
| log_time('emscript (llvm=>js)') |
| |
| # 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 |
| |
| # 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') |
| open(final, 'w').write(pre_js + src + post_js) |
| 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] |
| |
| 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))) |
| return 'memoryInitializer = "%s";' % 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')) |
| |
| log_time('source transforms') |
| |
| # It is useful to run several js optimizer passes together, to save on unneeded unparsing/reparsing |
| js_optimizer_queue = [] |
| js_optimizer_extra_info = {} |
| js_optimizer_queue_history = [] |
| js_optimizer_blacklist = (os.environ.get('EMCC_JSOPT_BLACKLIST') or '').split(',') |
| minify_whitespace = False |
| cleanup_shell = False |
| |
| def flush_js_optimizer_queue(title='js_opts'): |
| global final, js_optimizer_queue, js_optimizer_extra_info, js_optimizer_queue_history, cleanup_shell |
| |
| js_optimizer_queue = filter(lambda p: p not in js_optimizer_blacklist, js_optimizer_queue) |
| |
| if js_optimizer_extra_info is not None and len(js_optimizer_extra_info) == 0: |
| js_optimizer_extra_info = None |
| |
| if len(js_optimizer_queue) > 0 and not(not shared.Settings.ASM_JS and len(js_optimizer_queue) == 1 and js_optimizer_queue[0] == 'last'): |
| |
| def run_passes(passes, title, just_split, just_concat): |
| global final, minify_whitespace, emit_symbol_map, target |
| passes = ['asm'] + passes |
| if shared.Settings.PRECISE_F32: |
| passes = ['asmPreciseF32'] + passes |
| if emit_symbol_map and 'minifyNames' in passes: |
| passes += ['symbolMap='+target+'.symbols'] |
| if profiling_funcs and 'minifyNames' in passes: |
| passes += ['profilingFuncs'] |
| if minify_whitespace and 'last' in passes: |
| passes += ['minifyWhitespace'] |
| if 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, js_optimizer_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 = js_optimizer_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 = js_optimizer_extra_info |
| for p in passes: |
| js_optimizer_queue = [p] |
| flush_js_optimizer_queue(p) |
| js_optimizer_extra_info = extra_info # flush wipes it |
| log_time('part of js opts') |
| js_optimizer_queue_history += js_optimizer_queue |
| js_optimizer_queue = [] |
| js_optimizer_extra_info = {} |
| |
| if shared.Settings.DEAD_FUNCTIONS: |
| js_optimizer_queue += ['eliminateDeadFuncs'] |
| js_optimizer_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 |
| js_optimizer_queue += ['noop'] |
| |
| def get_eliminate(): |
| if shared.Settings.ALLOW_MEMORY_GROWTH: |
| return 'eliminateMemSafe' |
| else: |
| return 'eliminate' |
| |
| if opt_level >= 2: |
| js_optimizer_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 |
| js_optimizer_queue += ['aggressiveVariableElimination'] |
| |
| js_optimizer_queue += ['simplifyExpressions'] |
| |
| if shared.Settings.EMTERPRETIFY: |
| # emterpreter code will not run through a JS optimizing JIT, do more work ourselves |
| js_optimizer_queue += ['localCSE'] |
| |
| if shared.Settings.EMTERPRETIFY: |
| # add explicit label setting, as we will run aggressiveVariableElimination late, *after* 'label' is no longer notable by name |
| js_optimizer_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: js_optimizer_queue += ['simplifyIfs'] |
| |
| if shared.Settings.PRECISE_F32: js_optimizer_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 |
| global js_optimizer_queue |
| |
| if shared.Settings.SPLIT_MEMORY: js_optimizer_queue += ['splitMemory', 'simplifyExpressions'] # must be done before minification |
| |
| if opt_level >= 2: |
| if debug_level < 2 and not use_closure_compiler == 2: |
| js_optimizer_queue += ['minifyNames'] |
| if debug_level == 0: |
| global minify_whitespace |
| minify_whitespace = True |
| |
| if use_closure_compiler == 1: |
| js_optimizer_queue += ['closure'] |
| elif debug_level <= 2 and shared.Settings.FINALIZE_ASM_JS and not use_closure_compiler: |
| global cleanup_shell |
| cleanup_shell = True |
| |
| if js_opts: |
| if shared.Settings.SAFE_HEAP: js_optimizer_queue += ['safeHeap'] |
| |
| if shared.Settings.OUTLINING_LIMIT > 0: |
| js_optimizer_queue += ['outline'] |
| js_optimizer_extra_info['sizeToOutline'] = shared.Settings.OUTLINING_LIMIT |
| |
| if opt_level >= 2 and debug_level < 3: |
| if opt_level >= 3 or shrink_level > 0: |
| js_optimizer_queue += ['registerizeHarder'] |
| else: |
| js_optimizer_queue += ['registerize'] |
| |
| if not shared.Settings.EMTERPRETIFY: |
| do_minify() |
| |
| if opt_level >= 2: |
| js_optimizer_queue += ['asmLastOpts'] |
| |
| if shared.Settings.FINALIZE_ASM_JS: js_optimizer_queue += ['last'] |
| |
| flush_js_optimizer_queue() |
| |
| if use_closure_compiler == 2: |
| flush_js_optimizer_queue() |
| |
| 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') |
| |
| 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(Module) {\n') |
| f.write(' Module = Module || {};\n') |
| f.write('\n') |
| f.write(src) |
| f.write('\n') |
| f.write(' return Module;\n') |
| f.write('};\n') |
| f.close() |
| src = None |
| |
| if shared.Settings.EMTERPRETIFY: |
| flush_js_optimizer_queue() |
| 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() |
| js_optimizer_queue += ['last'] |
| flush_js_optimizer_queue() |
| |
| # 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() |
| js_optimizer_queue += ['last'] |
| flush_js_optimizer_queue() |
| 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) |
| |
| def generate_source_map(map_file_base_name, offset=0): |
| jsrun.run_js(shared.path_from_root('tools', 'source-maps', 'sourcemapper.js'), |
| shared.NODE_JS, js_transform_tempfiles + |
| ['--sourceRoot', os.getcwd(), |
| '--mapFileBaseName', map_file_base_name, |
| '--offset', str(offset)]) |
| |
| # 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) |
| |
| 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 |
| |
| 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 |
| shutil.move(final, js_target) |
| else: |
| # Normal code generation path |
| if debug_level >= 4: |
| generate_source_map(target) |
| shutil.move(final, js_target) |
| script_src = base_js_target |
| |
| from tools import client_mods |
| asm_mods = client_mods.get_mods(shared.Settings, minified = 'minifyNames' in js_optimizer_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() |
| temp_target = misc_temp_files.get(suffix='.js').name |
| execute([shared.PYTHON, shared.path_from_root('tools', 'separate_asm.py'), js_target, asm_target, temp_target]) |
| shutil.move(temp_target, js_target) |
| 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 = URL.createObjectURL(blob); |
| 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' |
| |
| html = open(target, 'w') |
| 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>' % script_src |
| else: |
| script_replacement = '<script>\n%s\n</script>' % script_inline |
| html.write(shell.replace('{{{ SCRIPT }}}', script_replacement)) |
| html.close() |
| else: |
| if debug_level >= 4: generate_source_map(target) |
| if proxy_to_worker: |
| worker_target_basename = target_basename + '.worker' |
| open(target, 'w').write(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())) |
| shutil.move(final, target[:-3] + '.worker.js') |
| else: |
| # copy final JS to output normally |
| shutil.move(final, target) |
| |
| if shared.Settings.WASM: |
| logging.debug('converting to WebAssembly') |
| wasm_target = unsuffixed(js_target) + '.wasm' |
| subprocess.check_call([shared.PYTHON, shared.path_from_root('third_party', 'wasm-polyfill', 'wasmator.py'), js_target, wasm_target, shared.Settings.EXPORT_NAME]) |
| |
| log_time('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) |
| |
